Publications

Journal Publications

1. 1. Y. Singh and H. Subbaraman*, "Recent Advances in Graphene-Enabled Silicon-Based High-Speed Optoelectronic Devices—A Review," Photonics 10 (12), 1292 (2023) https://doi.org/10.3390/photonics10121292

   2. T. V. Varghese, J. Eixenberger, F. Rajabi-Kouchi, M. Lazouskaya, C. Francis, H. Burgoyne, K. Wada, H. Subbaraman, D. Estrada, "Multijet Gold Nanoparticle Inks for Additive Manufacturing of Printed and Wearable Electronics," ACS Materials Au (2023) https://doi.org/10.1021/acsmaterialsau.3c00058

   3. M. Sawyer, J. Eixenberger, O. Nielsen, J. Manzi, R. Brown, H. Subbaraman, and D. Estrada*, “Correlative Imaging of 3D Cell Culture on Opaque Bioscaffolds for Tissue Engineering Applications,” ACS Applied Bio Materials, 6(9), 3917-3925 (2023) https://doi.org/10.1021/acsabm.3c00408

   4. J. Manzi, A. Weltner, T. Varghese, N. McKibben, M. Busuladzic-Begic, D. Estrada, and H. Subbaraman*, “Plasma Jet Printing of Thermoelectric Colloidal Nanoflakes for Flexible Energy Harvesting,” Nanoscale, 15, 6596-6606 (2023) https://doi.org/10.1039/D2NR06454E

   5. J. Manzi, N. Kandadai, R. Gandhiraman, H. Subbaraman*, “Plasma Jet Printing: an Introduction,” IEEE Transactions on Electron Devices 70(4), 1548-1553 (2023) https://doi.org/10.1109/TED.2023.3248526

   6. M. Pearlman, A. Lupercio, A. Rektor, J. Lamb, A. Fleming, B. Jaques, H. Subbaraman, and N. Kandadai*, “Infrared Thermography Method to Detect Cracking of Nuclear Fuels in Real-Time" Nuclear Engineering and Design, 405, 112196 (2023)

   7. Z. Deng, N. McKibben, B. Ryel, D. Estrada, J. Daw, J. Manzi, H. Subbaraman, and F. Muramutsa, “Aerosol Jet Printing of Piezoelectric Surface Acoustic Wave Thermometer,” Microsystems and Nanoengineering, 9, 51 (2023). https://doi.org/10.1038/s41378-023-00492-5

   8. B. Badamchi, W.-C. Hsu, A. A. A. Simon, Z. Y. Chi, M. Mitkova, A. X. Wang, and H. Subbaraman*, “Ultra-Compact Hybrid Silicon:Chalcogenide Waveguide Temperature Sensor,” Optics Express 30 (16), 28470-28478 (2022)

   9. S. Rana, A. Fleming, H. Subbaraman, and N. Kandadai*,” Differently Structured Fabry-Perot Interferometers for Gas Pressure Monitoring,” IEEE Sensors Journal, 2022, doi: 10.1109/JSEN.2022.3181098.

   10. S. Rana, H. Subbaraman, N. Kandadai*, A. Fleming, “Real-time measurement of parametric influences on the refractive index and length changes in silica optical fibers,” Optics Express 30 (9) 30(9), 15659-15668 (2022)

   11. S. Rana, N. Kandadai, and H. Subbaraman*, “Experimental Validation of a Reflective Long Period Grating Design Methodology,” Results in Optics, 7, 100224 (2022) https://doi.org/10.1016/j.rio.2022.100224

   12. S. Rana, A. Fleming*, N. Kandadai, and H. Subbaraman, “Active compensation of radiation effects on optical fibers for sensing applications,” Sensors, 21(24), 8193 (2021) https://doi.org/10.3390/s21248193

   13. A. A. A. – Simon, Y. Sakaguchi, L. Jones, H. Kunold, I. Van Rooyen, B. Badamchi, H. Subbaraman, M. Mitkova*, “Introduction of Chalcogenide Glasses to Additive Manufacturing - Nanoparticle Ink Formulation, Inkjet Printing, and Phase Change Devices Fabrication,” Scientific Reports, 11(1), 14311 (2021)

   14. S. Rana, H. Subbaraman, A. Fleming, and N. Kandadai*, “Numerical Analysis of Radiation Effects on Fiber Optic Sensors,” Sensors 21, 4111 (2021). https://doi.org/10.3390/s21124111

   15. Z. Badamchi, A. V. Shahmirzadi, B. Badamchi, and H. Subbaraman, “Generating Concentrically Embedded Spatially Divided OAM Carrying Vortex Beams Using Transmitarrays,” IEEE Trans. Antenna. Propagation 69, 8436-8448, (2021) doi: 10.1109/TAP.2021.3090860.

   16. B. Badamchi, A.-A. A. Simon, M. Mitkova, and H. Subbaraman*, “Chalcogenide-Capped Fiber-Optic Sensor for Real -Time Extreme Environment Temperature Monitoring,” Sensors, 21, 1616 (2021) https://doi.org/10.3390/ s21051616

   17. T. Pandhi, C. Cornwell, P. Barnes, J. Cox, C. Xiong, P. H. Davis, H. Subbaraman, J. Koehne, and D. Estrada*, “Fully Inkjet-Printed Multilayer Graphene Flexible Electrodes for Biosensing Applications,” RSC Advances, 10, 38205-38219 (2020) https://doi.org/10.1039/D0RA04786D

   18. T. Pandhi, A. Chandnani, H. Subbaraman, and D. Estrada*, “A Review of Inkjet Printed Graphene and Carbon Nanotubes Based Gas Sensors,” MDPI Sensors, 20, 5642 (2020) https://doi.org/10.3390/s20195642

   19. M. Monne, P. M. Grubb, H. Stern, H. Subbaraman, R. T. Chen, and M. Y. Chen, “Inkjet Printed Graphene-based 1×2 Phase Array Antenna,” Micromachines D:Materials and Processing (Accepted, in press)

   20. S. Rana, N. Kandadai, and H. Subbaraman*, “Towards the design of a wideband reflective long period grating distributed sensor,” J.Phys. Comm. 4, 065015 (2020) DOI: 10.1088/2399-6528/ab9dd6

   21. A.A.A. Simon, B. Badamchi, H. Subbaraman, Y. Sakaguchi, and M. Mitkova, “Phase Change in Ge-Se Chalcogenide Glasses and its Implications on Optical Temperature Sensing Devices,” J. Mat. Sci: Mat. Elec, 31, 11211–11226 (2020) DOI: 10.1007/s10854-020-03669-0

   22. W. T. Li, M. Wei, B. Badamchi, H. Subbaraman, and X. Shi*, “A novel tri-band reconfigurable microstrip patch antenna,” Frequenz (in press, 2020) doi: https://doi.org/10.1515/freq-2019-0130

   23. Md Aslam Mollah, S. Rana*, and H. Subbaraman, “Polarization Filter Realization Using Low-loss Hollow- core Anti-resonant Fiber in THz Regime, Res. Phys, 17, 103092 (2020)

   24. A. A. A. Simon, S. M. R. Ullah, B. Badamchi, H. Subbaraman, and M. Mitkova*, “Materials Characterization of Thin Films Printed with Ge20Se80 Ink,” Microscopy and Microanalysis, 25(S2), 2606-2607 (2019)

   25. P. Grubb, F. Mokhtari-Koushyar, T. Lenz, A. Asghari, G. Gan, W. Xia, H. Dalir, H. Subbaraman, R. Chen*, “High Speed Roll-to-Roll Printable Transistor Enabled by a Pulsed Light Curable CNT Ink,” Journal of Manufacturing and Materials Processing, 3(2), 33 (2019)

   26. S. Rana, N. Kandadai, and H. Subbaraman*, “A Highly Sensitive, Polarization Maintaining Photonic Crystal Fiber Sensor Operating in the THz Regime,” Photonics, 5(4), 40 (2018)

   27. B. Wilson, S. Rana, H. Subbaraman, N. Kandadai, T. Blue*, “Modeling of the Creation of an Internal Cladding in Sapphire Optical Fiber Using the 6Li(n,α)3H Reaction,” IEEE/OSA Journal of Lightwav. Technol., 36, 5381-5387 (2018)

   28. C. J. Chung, X. Xu, Z. Pan, F. Mokhtari-Koushyar, R. Wang, H. Yan, H. Subbaraman, and R. T. Chen*, “Silicon-Based Hybrid Integrated Photonic Chip for Ku-band Electromagnetic Wave Sensing,” IEEE/OSA J. Lightwav. Technol., 36 (9), 1568-1575 (2018)

   29. S. Rana, A. Siraj Rakin, Md R. Hasan, Md S. Reza, R. Leonhardt, D. Abbott, and H. Subbaraman*, “Low Loss and Flat Dispersion Kagome Photonic Crystal Fiber in the Terahertz Regime,” Optics Communications, 410, 452-456 (2018)

   30. Md. R. Hasan, S. Akter, A. A. Rifat, S. Rana, K. Ahmed, R. Ahmed, H. Subbaraman, and D. Abbott*, “Spiral Photonic Crystal Fiber Based Dual Polarized Surface Plasmon Resonance Biosensor,” IEEE. Sensors Journal, 18(1), 133-140 (2017)

   31. X. Xu, X. Zheng, F. He, Z. Wang, H. Subbaraman, Y. Wang, B. Jia, and R. T. Chen*, “Observation of Third-order Nonlinearities in Graphene Oxide Film at Telecommunication Wavelengths,” Scientific Reports, 7(1), 9646 (2017)

   32. S. Rana, A. S. Rakin, H. Subbaraman, R. Leonhardt, and D. Abbott*, “Low Loss and Low Dispersion Fiber for Transmission Applications in the Terahertz Regime,” IEEE. Photon. Technol. Letts, 29, 830-833 (2017)

   33. P. M. Grubb, H. Subbaraman, S. Park, D. Akinwande, and R. T. Chen*, “Inkjet Printing of High Performance Transistors with Micron Order Chemically Set Gaps,” Scientific Reports, 7: 1202 (2017)

   34. H. Yan, X. Xu, C. -J. Chung, H. Subbaraman, Z. Pan, S. Chakravarty, and R. T. Chen*, “One-dimensional photonic crystal slot waveguide for silicon-organic hybrid electro-optic modulators,” Optics Letters, 41(23), 5466-5469 (2016)

   35. W. Li, Y. Hei, H. Subbaraman, X. Shi, R. T. Chen*, “Novel Printed Filtenna with Dual Notches and Good Out-of-Band Characteristics for UWB-MIMO Applications,” IEEE Microwav. Wireless. Comp. Letts, 26(10), 765-767 (2016)

   36. C. Zhang, H. Subbaraman, Q. Li, Z. Pan, J.G. Ok, L. Tao, C. -J. Chung, X. Zhang, X. Lin, R. T. Chen and J. Guo, “Printed Photonic Elements: Nanoimprinting and beyond,” J. Mater. Chem. C, 5133-5153 (2016)

   37. Z. Wang, X. Xu, D. Fan, Y. Wang, H. Subbaraman, and R. T. Chen, “Geometrical Tuning Art for Entirely Subwavelength Grating Waveguide based Integrated Photonics Circuits,” Scientific Reports vol. 6, Article number: 24106 (2016)

   38. X. Zhang, C-J. Chung, S. Wang, H. Subbaraman, Z. Pan, Q. Zhan, and R. T. Chen, “Integrated Broadband Bowtie Antenna on Transparent Silica Substrate,” IEEE Ant. Wireless. Prop. Letts, vol. 15, 1377-1381 (2016)

   39. X. Zhang, C. –J. Chung, A. Hosseini, H. Subbaraman, J. Luo, A. K- Y. Jen, R. Nelson, C. Y-C. Lee, and R. T. Chen, “High Performance Optical Modulator Based on Electro-Optic Polymer Filled Silicon Slot Photonic Crystal Waveguide,” Journal of Lightwave Technology, vol. 34, 2941-2951 (2016)

   40. Z. Pan, H. Subbaraman (joint first author), Y. Zou, X. Xu, X. Zhang, C. Zhang, Q. Li, L. Jay Guo, and R. T. Chen, “Quasi-Vertical Tapers for Polymer Waveguide Based Inter-Board Optical Interconnects,” Photonics Research, vol. 3, Iss. 6, pp. 317-323 (2015)

   41. Z. Wang, H. Yan, S. Chakravarty, H. Subbaraman, X. Xu, D. L. Fan, A. X. Wang, and R. T. Chen, “Microfluidic Channels with Ultralow Loss Waveguide Crossings for Various Chip-integrated Photonic Sensors,” Optics Letters, Vol. 40, Iss. 7, pp. 1563–1566 (2015)

   42. H. Subbaraman, X. Xu, A. Hosseini, X. Zhang, Y. Zhang, D. Kwong, and R. T. Chen, “Recent Advances in Silicon-based Passive and Active Optical Interconnects,” Focus Issue on Optical Interconnects, Optics Express, vol. 23, no. 3, 2487-2510 (2015) (Invited)

   43. C. T. Chen, X. Xu, A. Hosseini, Z. Pan, H. Subbaraman, X. Zhang, Ray T. Chen, “Design of Highly Efficient Hybrid Si-Au Taper for Dielectric Strip Waveguide to Plasmonic Slot Waveguide Mode Converter,” IEEE/OSA Lightwave Technology, Journal of, vol. 33, no. 2, 535-540 (2015)

   44. X. Xu, H. Subbaraman (joint first author), S. Chakravarty, A. Hosseini, J. Covey, Y. Yu, D. Kwong, Y. Zhang, W. Lai, Y. Zou, N. Lu, and R. T. Chen, “Flexible Single-Crystal Silicon Nanomembrane Photonic Crystal Cavity,” ACS Nano, vol. 8, no. 12, pp. 12265-12271 (2014)

   45. X. Lin, H. Subbaraman (joint first author), Z. Pan, A. Hosseini, C. Longe, K. Kubena, P. Schelicher, P. Foster, S. Brickey, and R. T. Chen, “Towards realizing high-throughput, roll-to-roll, manufacturing of flexible electronic systems,” Electronics, vol. 3, pp. 624-635 (2014)

   46. X. Zhang, H. Subbaraman (joint first author), A. Hosseini, R. Chen, “High Efficiency Mode Converter for Coupling Light into Large-slot Photonic Crystal Waveguide”, Optics Express, vol. 22, no. 17, pp. 20678-20690 (2014)

   47. Y. Zou, H. Subbaraman, S. Chakravarty, X. Xu, A. Hosseini, W.-C. Lai, P. Wray, and R. T. Chen, “Grating-Coupled Silicon-on-Sapphire Integrated Slot Waveguides Operating at Mid Infrared Wavelengths,” Optics Letters, vol. 39, no. 10, pp. 3070-3073 (2014)

   48. X. Zhang, A. Hosseini, H. Subbaraman, S. Wang, Q. Zhan, J. Luo, A. K.-Y Jen, and R. T. Chen, “Integrated Photonic Electromagnetic Field Sensor Based on Broadband Bowtie Antenna Coupled Silicon Organic Hybrid Modulator,” IEEE/OSA Journal of Lightwave Technology, vol.32, no.20, pp. 3774-3784 (2014)

   49. D. Kwong, A. Hosseini, J. Covey, Y. Zhang, X. Xu, H. Subbaraman, and R. T. Chen, “On-chip Silicon Optical Phased Array for Two Dimensional Beam Steering,” Optics Letters, vol. 39, pp.941-944 (2014)

   50. X. Zhang, A. Hosseini, X. Lin, H. Subbaraman, and R. T. Chen, “Polymer-Based Hybrid-Integrated Photonic Devices for Silicon On-Chip Modulation and Board-Level Optical Interconnects,” Selected Topics in Quantum Electronics, IEEE Journal of, vol.19, no.6, pp.196-210 (2013) (Invited)

   51. X. Xu, H. Subbaraman, D. Kwong, A. Hosseini, and R. T. Chen, “Colorless grating couplers realized by interleaving dispersion engineered subwavelength structures,” Optics Letters, Vol. 38, pp. 3799-3802 (2013)

   52. X. Xu, H. Subbaraman, A. Hosseini, D. Kwong, Y. Zhang, and R. T. Chen, “Large Area Silicon Nanomembrane Photonic Devices on Unconventional Substrates,” IEEE Photonics Technology Letters, Vol. 25, No. 16, pp. 1601-1604 (2013)

   53. X. Lin, T. Ling, H. Subbaraman, X. Zhang, K. Byun, L. J. Guo, and R. T. Chen, “Ultraviolet imprinting and aligned ink-jet printing for multilayer patterning of electro-optic polymer modulators,” Optics Letters, Vol. 38, pp. 1597-1599 (2013) (Also featured in Advances in Engineering)

   54. H. Subbaraman, D. Pham, X. Xu, M. Y. Chen, A. Hosseini, X. Lu, and R. T. Chen, “Ink-Jet Printed Two Dimensional Phased-Array Antenna on a Flexible Substrate,” IEEE. Antennas and Wireless Propagation Letters, Vol. 12, pp. 170-173 (2013)

   55. X. Lin, T. Ling, H. Subbaraman, L. J. Guo, and R. T. Chen, “Printable thermo-optic polymer switches utilizing nanoimprinting and ink-jet printing,” Optics Express, Vol. 21, No. 2, pp. 2110-2117 (2013)

   56. X. Lin, A. Hosseini, X. Dou, H. Subbaraman, R. T. Chen, “Low Cost Board-to-Board Optical Interconnects Using Molded Polymer Waveguide with 45 Degree Mirrors and Inkjet-printed Micro-lenses as Proximity Vertical Coupler,” Optics Express, Vol. 21, No. 1, pp. 60-69 (2013)

   57. H. Subbaraman, X. Xu, J. Covey, and R. T. Chen, “Efficient light coupling into in-plane semiconductor nanomembrane photonic devices utilizing a sub-wavelength grating coupler,” Opt. Express, Vol. 20, No. 18, pp. 20659-20665 (2012)

   58. C.-Y. Lin, H. Subbaraman, A. Hosseini, L. Zhu, A. X. Wang, and R. T. Chen, “Silicon Nanomembrane Based Photonic Crystal Waveguide Array for Wavelength-Tunable True-Time-Delay Lines,” Appl. Phys. Letts, Vol. 101. pp. 4739003 (2012)

   59. X. Xu, H. Subbaraman (joint first author), J. Covey, D. Kwong, A. Hosseini, and R. T. Chen, “Complementary metal-oxide-semiconductor compatible high efficiency subwavelength grating couplers for silicon integrated photonics,” Applied Physics Letters, Vol. 101, pp. 031109 (2012)

   60. A. Hosseini, X. Xu, H. Subbaraman (joint first author), C.-Y. Lin, S. Rahimi, and R. T. Chen, “Large optical spectral range dispersion engineered silicon-based photonic crystal waveguide modulator,” Opt. Express, Vol.20, No. 11, pp. 12318-12325 (2012)

   61. X. Xu, H. Subbaraman (joint first author), A. Hosseini, C.-Y. Lin, D. Kwong, and R. T. Chen, “Stamp Printing of Silicon Nanomembrane Based Photonic Devices onto Flexible Substrates with a Suspended Configuration,” Opt. Letts. 37, pp.1020-1022 (2012)

   62. D. Pham, H. Subbaraman, M. Y. Chen, X. Xu, and R. T. Chen, “Self-Aligned Carbon Nanotube Thin-Film-Transistors on Flexible Substrates with Novel Source-Drain Contact and Multi-layer Interconnection,” IEEE. Trans. Nanotech, Vol. 11. No. 1, pp. 44-50 (2012)

   63. M. Y. Chen, D. Pham, H. Subbaraman, X. Lu, and R. T. Chen, “Conformal Ink-jet Printed C-band Phased-Array Antenna Incorporating Carbon Nanotube Field-effect Transistor Based Reconfigurable True-time Delay Line,” IEEE Trans. Microwav. Theory. Tech, Vol 60, No. 1, pp. 179-184 (2012)

   64. M. Y. Chen, H. Subbaraman, and R. T. Chen, “One stage pulse compression at 1554nm through highly anomalous dispersive photonic crystal fiber,” Opt. Express. 19, pp. 21809-21817 (2011)

   65. S. Rahimi, A. Hosseini, X. Xu, H. Subbaraman, R. T. Chen, “Group-Index Independent Coupling to Band Engineered SOI Photonic Crystal Waveguide with Large Slow-Down Factor,” Opt. Express 19, 21832-21841 (2011) 

   66. G. Gu, Y. Ling, R. Liu, P. Vasinajindakaw, X. Lu, C. Jones, W.-S. Shih, V. Kayastha, N. Downing, X. Han, H. Subbaraman, D. Pham, R. T. Chen, M. Y. Chen, U. Berger and M. Renn, “All-Printed Thin-film Transistor based on Purified Single Walled Carbon Nanotubes (SWCNT) with Linear Response,” J. Nanotechnology, Vol. 2011, Article ID 823680, 4pages (2011)

   67. A. Hosseini, X. Xu, D. N. Kwong, H. Subbaraman, W. Jiang, and R. T. Chen, “On the role of evanescent modes and group index tapering in slow light photonic crystal waveguide coupling efficiency,” Appl. Phys. Letts. 98, 031107 (2011)

   68. A. Hosseini, D. Kwong, Yang Zhang, H. Subbaraman, X. Xu, R. T. Chen, “1xN Multimode Interference Beam Splitter Design Techniques for On-Chip Optical Interconnections,” IEEE J. Sel. Top. Quant. Elec, Vol. 17, No. 3, pp.510-515 (2011).

   69. D. Pham, H. Subbaraman, M. Y. Chen, X. Xu, and R. T. Chen, “Light Weight and Conformal Phased-Array Antenna with CNT-TFT Based Phased-Shifter on a Flexible Substrate,” IEEE Trans. Ant. Prop, Vol. 59, No. 12, pp. 4553-4558 (2011).

   70. A. Ghaffari, A. Hosseini, X. Xu, H. Subbaraman, and R. T. Chen, “Transfer of Micro and Nano-photonic Silicon Nanomembrane Waveguide Devices on Flexible Substrates,” Opt. Express, Vol. 18, No. 19, pp. 10086-10095 (2010)

   71. A. Hosseini, H. Subbaraman, D. N. Kwong, Yang Zhang, and R. T. Chen, “Optimum Access Waveguide Width for 1xN Multimode Interference Couplers on Silicon Nanomembrane,” Opt. Letts, Vol. 35, No. 17, pp. 2864-2866 (2010)

   72. J. Vaillancourt, H. Zhang, P. Vasinajindakaw, H. Xia, X. Lu, X. Han, D. C. Janzen, W.-S. Shih, C. S. Jones, M. Stroder, M. Y. Chen, H. Subbaraman, R. T. Chen, U. Berger, and M. Renn, “All ink-jet-printed carbon nanotube thin-film transistor on a polyimide substrate with an ultrahigh operating frequency of over 5 GHz,” Appl. Phys. Letts, Vol. 93, pp. 243301 (2008)

   73. H. Subbaraman, M. Y. Chen, and R. T. Chen, “Photonic Dual RF Beam Reception of an X-band Phased Array Antenna using Photonic Crystal Fiber based True-Time-Delay Beamformer,” Appl. Optics, Vol. 47, No. 34, pp. 6448-6452 (December 2008)

   74. H. Subbaraman, M. Y. Chen, and R. T. Chen, “Photonic Crystal Fiber Based True-Time-Delay Beamformer for Multiple RF Beam Transmission and Reception of an X-Band Phased Array Antenna,” IEEE/OSA J. Lightwav. Technol, Vol. 26, No. 15, pp. 2803-2809 (August 2008)

   75. H. Subbaraman, M. Y. Chen, Y. Jiang, and R. T. Chen, “Reply to Comment on Design of a broadband highly dispersive pure silica photonic crystal fiber,” Appl. Optics, Vol. 44, No. 18, pp. 3330-3332 (June 2008)

   76. M. Y. Chen, H. Subbaraman, and R. T. Chen, “Photonic Crystal Fiber Beamformer for Multiple X-band Phased-Array Antenna Transmissions,” IEEE Photon. Technol. Letts, Vol. 5, No. 5, pp. 375-377 (March 2008)

   77. H. Subbaraman, T. Ling, Y. Jiang, M. Chen, P. Cao, and R. T. Chen, “Design of a Broadband Highly Dispersive Pure Silica Photonic Crystal Fiber,” Appl. Optics, Vol. 46, No. 16, pp. 3263-3268 (2007)

Conferences

1. (Invited) J. Manzi, D. Estrada and H. Subbaraman*, "Plasma Jet Printing for Flexible Hybrid Electronics – A Review (Invited Paper)," 2023 IEEE International Flexible Electronics Technology Conference (IFETC), San Jose, USA, CA, USA, 2023, pp. 01-03, doi: 10.1109/IFETC57334.2023.10254821.

2. J. Manzi, T. Varghese, A. Dhamala, L. Prakasan, J. Eixenberger, N. Kandadai, D. Estrada, and H. Subbaraman*, "Plasma Jet Deposition and Self-Sintering of Gold Nanoparticle Ink for Flexible Electronics," 2023 IEEE International Flexible Electronics Technology Conference (IFETC), San Jose, USA, CA, USA, 2023, pp. 1-3, doi: 10.1109/IFETC57334.2023.10254892

3. Y. Singh and H. Subbaraman, "Graphene-hBN based Hybrid Plasmonic SOI Refractive Index Sensor," in CLEO 2023, Technical Digest Series (Optica Publishing Group, 2023), paper JTu2A.138.

4. A. Dhamala, J. Manzi, H. Subbaraman, and N. Kandadai, “Determination of wavelength pairs for electron temperature calculation using line intensity ratio method in a Helium atmospheric pressure plasma jet,” 50th IEEE International Conference On Plasma Science (ICOPS), Santa Fe, NM, May 21 – May 25, 2023

5. (Invited) H. Subbaraman, Unconventional Materials and Device Architectures for Tomorrow’s System Needs, Printed Electronics and Additive Manufacturing: Functional Materials, Processing Techniques, and Emerging Applications, TMS Conference, San Diego March 22, 2023

6. Y. Singh and H. Subbaraman*, “Study and analysis of the tunable plasmonic sensor based on surface conductivity of graphene,” Proceedings Volume 12415, Physics and Simulation of Optoelectronic Devices XXXI; 124150I (2023) https://doi.org/10.1117/12.2649610

7. Florent Muramutsa, Samuel V Pedersen, Jonathan Logan, Michael Eppel, Mia Busuladzic-Begic, Joshua Eixenberger, Joshua D Wood, Fahima Ouchen, Harish Subbaraman, Chad Husko, Brian J Jaques, Emily M Heckman, David Estrada*, “Black phosphorus ink formulation for aerosol jet printing of planar and conformal optoelectronics,” Proceedings Volume 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022; 124770P (2023) https://doi.org/10.1117/12.2647379

8. J. Manzi, T. Varghese, J. Eixenberger, D. Estrada, H. Subbaraman*, “Gravity independent plasma-jet deposition of nanogold for in- space manufacturing of printed flexible electronics”, ISS R&D Conference 2022, (Washington D.C.; July 2022).

9. J. Manzi, T. Varghese, J. Eixenberger, D. Estrada, H. Subbaraman*, “Plasma-jet based printing and in situ sintering of gold patterns for paper-based flexible electronics,” FLEX Conference & Exhibition 2022, San Francisco, CA, July 11–14, 2022

10. T. Varghese, J. Eixenberger, J. Manzi, H. Subbaraman, D. Estrada, “Multi-Jet Compatible Low Temperature Sintering Gold Nano Inks for Epidermal Electronics”, FLEX Conference & Exhibition 2022/SEMICON West 2022, (San Francisco, CA; Jul. 2022)

11. S. Rana, N. Kandadai, H. Subbaraman, “Reflective long period grating based refractive index sensor,” In 2021 IEEE Photonics Conference (IPC), 2021.

12. A. S. Dhamala, J. Manzi, H. Subbaraman, and N. Kandadai*, “Simulation of 2D model of Dielectric Barrier Discharge for Flexible Hybrid Electronics,” IEEE International Conference on Plasma Science (ICOPS), (Virtual, Sep. 2021)

13. A. E. Weltner, J. Manzi, T. Varghese, D. Estrada, and H. Subbaraman*, “Plasma Jet Printing and Photonic Sintering of Thermoelectric Colloidal Nanoplatelets for Flexible Energy Harvesting”, International Flexible Electronics Technology Conference (IFETC), (Virtual; Aug. 2021)

14. T. Varghese, A. E. Weltner, J. Manzi, C. Hill, H. Subbaraman, and D. Estrada*, “Multiprinter Additive Manufacturing of Flexible and Lightweight Thermoelectric Energy Harvesters Using Colloidal Nanoparticles” ISS Research and Development Conference (ISS R&D), American Astronomical Society, (Virtual, Aug 2021)

15. A. E. Briggs, T. Varghese, J. Manzi, H. Subbaraman, D. Estrada*, “Multiprinter Additive Manufacturing of Flexible Thermoelectric Energy Harvesters Using Colloidal Nanoparticles”. The Minerals, Metals, and Materials Society (TMS) Annual Meeting & Exhibition, (Mar. 2022)

16. S. Rana, N. Kandadai, and H. Subbaraman*, “Reflective long period grating based temperature sensor,” Optical Components and Materials XVIII, PW210 SPIE OPTO, 11682-43 (2021) https://doi.org/10.1117/12.2576989

17. S. Rana, B. Badamchi, H. Subbaraman, and N. Kandadai*, “A simple and cost-effective metal coating method for reflective long period grating sensors,” Proc. SPIE 11503, Infrared Sensors, Devices, and Applications X, 115030K (22 August 2020) https://doi.org/10.1117/12.2568162

18. A.-Amin. A. Simon, S. Md. R. Ullah, L. Jones, H. Kunold, B. Badamchi, H. Subbaraman, M. Mitkova, “Application of Additive Technology for Formation of Phase Change Memory Devices: Electrical Characterization of Printed Ge2Sb2Te5 Phase Change Material,” IEEE WMED (2020)

19. A. A. Simon, L. Jones, B. Badamchi, H. Subbaraman, Y. Sakaguhi, and M. Mitkova*, “Phase Change in Ge-Containing Binary Chalcogenide Glasses: Exploring the Surface Plasmonic Effect for Temperature Monitoring in Nuclear Facilities,” 9th International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA 2020), to be held on August 23 - 28, 2020, in Pardubice, Czech Republic.

20. B. L. C. Andrade, K. Pakala, D. Bairaktarova, H. Subbaraman, and D. Hagemeier*, “Faculty Perspectives on the Impact of Virtual Office Hours in Engineering Courses" 2020 Undergraduate Research Showcase. 6. https://scholarworks.boisestate.edu/under_showcase_2020/6

21. T. Pandhi, K. Fujimoto, C. Cornwell, P. Barnes, H. Subbaraman, C. Xiong, J. Koehne, D. Estrada*, “Synthesis of Biologically Relevant Inks for Printed Electronics”, New Mexico EEG and Behavior Conference 2018, (Albuquerque, NM; Oct. 2018)

22. L. Karriem, S. Frahs, D. Convertino, M. Hondros, T. Pandhi, A. Chandnani, C. Efaw, M. Hurley, H. Subbaraman, C. Coletti, J. Oxford, D. Estrada*, “Differential Gene Expression in C2C12 Cells due to Scaffold Structure-Property-Processing-Performance Correlations”, Orthopaedic Research Society (ORS) Annual Meeting, (Austin, TX; Feb. 2019)

23. B. L. C. Andrade, K. Pakala, D. Bairaktarova, D. Bose, D. Hagemeier, and H. Subbaraman, “The Impact of Virtual Office Hours in Engineering,” ICUR (2019)

24. H. Subbaraman, “Printed Electronic Sensor Applications: From Simple to Extreme Environments,” IEEE International Flexible Electronics Technology Conference (IEEE IFETC) 2019, Vancouver, BC, August 12th, 2019 (Invited).

25. S. Rana, H. Subbaraman, and N. Kandadai*, “Role of Metal Coating Parameters on the Reflective Long Period Grating Spectrum,” OSA Conference on Optics and Photonics for Sensing the Environment, ETH1A.5 (2019)

26. K. Fujimoto, T. Pandhi, N. E. Mansoor, F. Muramutsa, H. Subbaraman, D. Estrada*, “Emerging Nanomaterial Inks for Additive Manufacturing of Wearable Sensors,” The Electrochemical Society, 44, 2086 (2019) (Invited)

27. H. Subbaraman*, “Electronic Wireless Sensors for Protecting Time-Sensitive Stored Produce,” The NCHU International ENgineering in Agriculture and Biotech LEadership (ENABLE) Workshop, Taichung, Taiwan, December 17, 2018 (Invited).

28. N.-e-Mansoor, F. Muramutsa, C. Schuck, H. Subbaraman, T. Pandhi, Y. Gogotsi, D. Estrada*, “Aerosol Jet Printing of Ti3C2 MXene Aqueous Ink,” ECS Meeting, MA2019-01 817, 2D Layered Materials from Fundamental Science to Applications - Session 2 - May 27 (2019)

29. P. M. Grubb, H. Subbaraman, R. T. Chen*, “Inkjet printing enabled rapid prototyping and model verification processes,” SPIE LASE, Laser 3D Manufacturing VI, 10909, 109090P, 2-7 February 2019, San Francisco (Invited, February 2018).

30. A. A. Simon, K. Kadrager, B. Badamchi, H. Subbaraman, and M. Mitkova*, “Temperature sensing in nuclear facilities: Application of the phase change effect of Chalcogenide glasses,” 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC & HMIT 2019), Orlando, Florida, 10-14 March, 2019

31. B. Badamchi, A. A. Simon, N. Kandadai, M. Mitkova, and H. Subbaraman*, “A novel high temperature optical waveguide sensor for nuclear reactors,” 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC & HMIT 2019), Orlando, Florida, 10-14 March, 2019

32. L. Li*, T. H. da. Silva, N. Kandadai, H. Subbaraman, J. Daw, “First-principles studies of dopant and radiation defect effects on optical fiber sensors,” 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC & HMIT 2019), Orlando, Florida, 10-14 March, 2019

33. M. D. McMurtrey*, D. Estrada, E. Jankowski, L. Li, and H. Subbaraman, “Advanced Manufacturing for In-Pile Instrumentation in Nuclear Test Reactors,” 2019 TMS Annual Meeting & Exhibition (TMS2019), San Antonio, TX, Mar 10-14 2019 ()

34. S. Rana, B. Badamchi, B. Joshi, H. Subbaraman, N. Kandadai*, “Towards Time Stable Fiber Optic Sensors for Harsh Environment,” 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC & HMIT 2019), Orlando, Florida, 10-14 March, 2019

35. M. Khafizov*, K. Agarwal, R. Schley, C. Jensen, N. Kandadai, M. Long, H. Subbaraman, and D. Hurley, “Infrared Thermography for In-Pile Imaging of Nuclear Fuel Cracking,” 11th Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC & HMIT 2019), Orlando, Florida, 10-14 March, 2019

36. C. Cornwell, T. Pandhi, K. Fujimoto, H. Subbaraman, and D. Estrada*, “Additive Manufacturing of Nanomaterial Based Sensors for Extreme Environments,” Idaho Conference on Undergraduate Research (2018)

37. N. Salzman, T. B. Welch*, H. Subbaraman, C. H. G. Wright, “Using Veteran’s Technical Skills in an Engineering Laboratory,” 2018 ASEE Annual Conference & Exposition, 22952-1 – 22952-7 (2018)

38. K. Fujimoto*, T. Unruh, J. Watkins, H. Subbaraman, and D. Estrada, “Additive Manufacturing of In – Pile Nuclear Sensors”, NASA In-Space Manufacturing and Printed Electronics Workshop, (Huntsville, AL; Apr. 2018)

39. T. Pandhi*, E. B. Kreit, R.S. Aga, K. Fujimoto, M. Sharbati, S. Khademi, A.N. Chang, H. Subbaraman, F. Xiong, J. Koehne, E.M. Heckman, and D. Estrada, “Emerging 1-D and 2-D Materials for Printed and Flexible Electronics”, NASA In-Space Manufacturing and Printed Electronics Workshop, (Huntsville, AL; Apr. 2018)

40. M. Hondros, S. Tuft*, L. Karriem†*, T. Pandhi, A. Chandnani, D. Convertino, C. Coletti, H. Subbaraman, J. T. Oxford, D. Estrada, “Differential Gene Expression in C2C12 Cells Due to Scaffold Structure-Property-Processing Correlations”, Materials Research Society Spring Meeting, (Phoenix, AZ; Apr. 2018)

41. J. Cox, A. Chandnani, D. Wilson, D. Estrada, and H. Subbaraman*, “Inkjet printing of dense interconnect arrays for flexible silicon circuit integration on flexible substrates,” 2018FLEX, Monterey, CA (Feb 12-15, 2018)

42. A. Rodriguez, H. Subbaraman, D. Wilson, D. Estrada*, “Anisotropic Conductive Adhesives for Flexible Hybrid Electronics”, Flex Conference, (Monterrey, CA; Feb. 2018)

43. C. J. Chung, Z. Pan, R. Wang, X. Xu, H. Subbaraman, and R. T. Chen*, “Ultra-compact electromagnetic wave sensor featuring electro-optic polymer infiltrated one-dimensional photonic-crystal-slotted waveguide, SPIE OPTO, 101030J-101030J-1 (2017)

44. Z. Pan, C. Zhang, H. Subbaraman, C. J. Chung, Q. Li, X. Xu, X. Zhang, L. J. Guo, and R. T. Chen*, “High speed attojoule/bit passive and active nanophotonic devices for computing and optical interconnects,” SPIE OPTO, 1010910-1010910-1 (2017)

45. R. Torsi, A. Chandnani, B. Joshi, D. Estrada, and H. Subbaraman*, “Inkjet Printed Carbon Nanotube Thin Film Transistors,” IEEE Workshop on Microelectronics and Electron Devices (WMED), April 21st, Boise, ID (2017)

46. K. Lewandowska, M. Seas, T. Pandhi, A. Chandnani, H. Subbaraman, P. Johnson, and D. Estrada*, “Powder River Basin Graphene Inks,” ICUR (2017)

47. P. M. Grubb, F. Bidoky, A. Mahajan, H. Subbaraman, W. Li, D. Frisbie, and R. T. Chen*, “X-band printed phased array antennas using high-performance CNT/ion gel/Ag transistors,” SPIE LASE, 973813-973813-12 (2016)

48. H. Subbaraman*, Z. Pan, C. Zhang, Q. Li, C.-J. Chung, X. Zhang, L. Jay Guo, and R. T. Chen, “Printed Polymer Photonic Devices for Optical Interconnect Systems,” Optical Interconnects XVI SPIE OPTO, 13 - 18 February 2016, San Francisco, California, Paper Number: 9753-33 

49. Z. Pan, C. Zhang, H. Subbaraman, C.-J. Chung, Q. Li, A. Panday, X. Xu, X. Zhang, Y. Zou, L. Jay Guo, and R. T. Chen*, “RF beam transmission of x-band PAA system utilizing large-area, light-weight, and conformal polymer-based true-time-delay module developed using imprinting and inkjet printing,” Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX SPIE OPTO, 13 - 18 February 2016, San Francisco, California Paper Number: 9747-64 

50. X. Zhang, C.-j Chung, H. Subbaraman, Z. Pan, C.-T Chen, and R.T. Chen*, “Design of a plasmonic-organic hybrid slot waveguide integrated with a bowtie-antenna for terahertz wave detection,” Photonic and Phononic Properties of Engineered Nanostructures V SPIE OPTO, 13 - 18 February 2016, San Francisco, California, Paper Number: 9756-39 

51. C-J. Chung, H. Subbaraman, J. Luo, A. K. Y. Jen, R. L. Nelson, C. Y. C. Lee, and R. T. Chen*, “Towards a fully packaged high-performance RF sensor featuring slotted photonic crystal waveguides,” Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX SPIE OPTO, 13 - 18 February 2016, San Francisco, California Paper Number 9747-66.

52. P. M. Grubb, H. Subbaraman, and R. T. Chen*, “Inkjet printed 3D micro- and nano-structures for Phased Array Antenna,” Laser 3D Manufacturing III, SPIE LASE, 13 - 18 February 2016, San Francisco, California, Paper Number: 9738-34

53. H. Yan, X. Xu, C.-J. Chuang, H. Subbaraman, Z. Pan, S. Chakravarty, and R. T. Chen*, “Silicon-organic hybrid electro-optic modulator based on one-dimensional photonic crystal slot waveguides,” CLEO, SF1E.6, 2016.

54. P. M. Grubb, F. Bidoky, A. Mahajan, H. Subbaraman, W. Li, D. Frisbie, and R. T. Chen, “X-band printed phased array antennas using high-performance CNT/ion gel/Ag transistors,” SPIE LASE, 973813-973813-12 (2016)

55. H. Subbaraman, Z. Pan, C. Zhang, Q. Li, C.-J. Chung, X. Zhang, L. Jay Guo, and R. T. Chen, “Printed Polymer Photonic Devices for Optical Interconnect Systems,” Optical Interconnects XVI SPIE OPTO, 13 - 18 February 2016, San Francisco, California, Paper Number: 9753-33 

56. Z. Pan, C. Zhang, H. Subbaraman, C.-J. Chung, Q. Li, A. Panday, X. Xu, X. Zhang, Y. Zou, L. Jay Guo, and R. T. Chen, “RF beam transmission of x-band PAA system utilizing large-area, light-weight, and conformal polymer-based true-time-delay module developed using imprinting and inkjet printing,” Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX SPIE OPTO, 13 - 18 February 2016, San Francisco, California Paper Number: 9747-64 

57. X. Zhang, C.-j Chung, H. Subbaraman, Z. Pan, C.-T Chen, and R.T. Chen, “Design of a plasmonic-organic hybrid slot waveguide integrated with a bowtie-antenna for terahertz wave detection,” Photonic and Phononic Properties of Engineered Nanostructures V SPIE OPTO, 13 - 18 February 2016, San Francisco, California, Paper Number: 9756-39 

58. C-J. Chung, H. Subbaraman, J. Luo, A. K. Y. Jen, R. L. Nelson, C. Y. C. Lee, and R. T. Chen, “Towards a fully packaged high-performance RF sensor featuring slotted photonic crystal waveguides,” Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX SPIE OPTO, 13 - 18 February 2016, San Francisco, California Paper Number 9747-66.

59. P. M. Grubb, H. Subbaraman, and R. T. Chen, “Inkjet printed 3D micro- and nano-structures for Phased Array Antenna,” Laser 3D Manufacturing III, SPIE LASE, 13 - 18 February 2016, San Francisco, California, Paper Number: 9738-34

60. H. Yan, X. Xu, C.-J. Chuang, H. Subbaraman, Z. Pan, S. Chakravarty, and R. T. Chen, “Silicon-organic hybrid electro-optic modulator based on one-dimensional photonics crystal slot waveguides,” CLEO, SF1E.6, 2016.

61. X. Xu, H. Subbaraman (joint first author), S. Chakravarty, and R. T. Chen, "Bending Behavior of Flexible Crystalline Silicon Nanomembrane Photonic Crystal Microcavities," in CLEO: 2015, OSA Technical Digest (online) (Optical Society of America, 2015), paper SF2H.3.

62. X. Zhang, H. Subbaraman, Z. Pan, C. -J. Chung, A. Hosseini, and R. Chen, “Low-loss Mode Converter for Silicon-Polymer Hybrid Slot Photonic Crystal Waveguide,” CLEO:2015 SF2H.6 (May12-14, 2015)

63. X. Zhang, A. Hosseini, H. Subbaraman, J. Luo, A. Jen, C. Chung, H. Yan, Z. Pan, R. Nelson, and R. T. Chen, "Backside-gate-assisted Broadband Modulation on Silicon-polymer Hybrid Photonic Crystal Waveguide," IEEE Optical Interconnects Conference, WC7 (2015)

64. X. Zhang, A. Hosseini, H. Subbaraman, J. Luo, A. Jen, C. -J. Chung, R. Nelson, and R. Chen, “High-speed Energy-efficient Silicon-polymer Hybrid Integrated Slot Photonic Crystal Waveguide Modulator,” CLEO:2015, SW3N.1 (May12-14, 2015) 

65. Z. Pan, H. Subbaraman, Y. Zou, X. Zhang, C. Zhang, Q. Li, L. Jay Guo, and R. T. Chen, “High optical coupling efficiency quasi-vertical taper for polymer waveguide devices,” Proc. SPIE 9368, Optical Interconnects XV, 936808 (13 March 2015)

66. X. Xu, H. Subbaraman, and R. T. Chen, “Bending behavior of a flexible single crystal nanomembrane photonic crystal cavity,” SPIE Photonics West, 9367, 936716 (11 February 2015)

67. Z. Pan, H. Subbaraman, X. Lin, Q. Li, C. Zhang, T. Ling, L. J. Guo, and R. Chen, "Reconfigurable Thermo-Optic Polymer Switch Based True-Time-Delay Network Utilizing Imprinting and Inkjet Printing," in CLEO: 2014, OSA Technical Digest (online) (Optical Society of America, 2014), paper SM4G.4.

68. Z. Pan, H. Subbaraman, X. Lin, Q. Li, C. Zheng, T. Ling, L. J. Guo, and R. T. Chen, “Reconfigurable thermo-optic polymer switch based true-time-delay network utilizing imprinting and inkjet printing,” Proc. SPIE 9362, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VIII, 936214 (March 14, 2015)

69. X. Zhang, A. Hosseini, H. Subbaraman, J. Luo, A. K. Y. Jen, R. L. Nelson, and R. Chen, “Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer,” in Photonics West, Photonic integration: Optical Interconnects XV (SPIE, San Francisco, CA 2015), Paper No. 9368-20.

70. X. Zhang, A. Hosseini, H. Subbaraman, S. Wang, Q. Zhan, J. Luo, A. K. Y. Jen, and R. T. Chen, “Antenna-coupled silicon-organic hybrid integrated photonic crystal modulator for broadband electromagnetic wave detection,” Proc. SPIE 9362, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VIII, 93620O (March 14, 2015).

71. X. Zhang, S. Wang, H. Subbaraman, Z. Pan, A. Hosseini, Q. Zhan, and R. Chen, “Integrated broadband bowtie antenna on transparent substrate,” Proc. SPIE. 9362, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VIII, 93620P. (March 14, 2015).

72. Z. Wang, H. Yan, Z. Wang, Y. Zou, C.-J. Yang, S. Chakravarty, H. Subbaraman, N. Tang, X. Xu, R. T. Chen, “Ultralow-loss waveguide crossings for the integration of microfluidics and optical waveguide sensors,” Proc. SPIE 9320, Microfluidics, BioMEMS, and Medical Microsystems XIII, 932012 (March 13, 2015)

73. X. Zhang, H. Subbaraman, A. Hosseini, and R. Chen, “Low-loss mode converter for coupling light into slotted photonic crystal waveguide,” Proc. SPIE. 9368, Optical Interconnects XV, 936807. (March 13, 2015).

74. Z. Pan, H. Subbaraman, X. Zhang, Q. Li, C. Zheng, L. J. Guo, and R. T. Chen, “High-optical coupling efficiency quasi-vertical tapers for polymer waveguide devices,” Proc. SPIE 9368, Optical Interconnects XV, 936808 (March 13, 2015).

75. R. F. Firoozi, Z. Pan, H. Subbaraman, R. T. Chen, "Design and Simulate Electro-Optic (EO) Polymer Logic Device," Undergraduate Research Conference, Austin, Texas 2014.

76. X. Zhang, A. Hosseini, H. Subbaraman, J. Luo, A. Jen, R. Nelson, and R. T. Chen,” Broadband Low-power Optical Modulator Based on Electro-optic Polymer Infiltrated Silicon Slot Photonic Crystal Waveguide,” FiO 6: Integrated Photonics, FTu1D.4, Tucson, Arizona (19-23 October 2014)

77. X. Zhang, A. Hosseini, H. Subbaraman, S. Wang, Q. Zhan, J. Luo, A. Jen, and R.T. Chen,” Electric Field Detection Using an Electro-optic Polymer Refilled Silicon Slot Photonic Crystal Waveguide,” FiO 6: Integrated Photonics, FW5B.4, Tucson, Arizona (19-23 October 2014)

78. X. Zhang, A. Hosseini, H. Subbaraman, S. Wang, Q. Zhan, J. Luo, A. K.-Y Jen, R. T. Chen, "Electro-optic Polymer Infiltrated Silicon Slot Photonic Crystal Waveguide for Broadband Electromagnetic Field Sensing", in Advanced Photonics for Communications, OSA Technical Digest (online) (Optical Society of America, 2014), paper IW2A.3.

79. X. Zhang, A. Hosseini, H. Subbaraman, J. Luo, A. Jen, R. Nelson, R. T. Chen, "High-performance Optical Modulator Based on Electro-optic Polymer Infiltrated Silicon Slot Photonic Crystal Waveguide", in Advanced Photonics for Communications, OSA Technical Digest (online) (Optical Society of America, 2014), paper IW2A.2.

80. Z. Wang, S. Chakravarty, H. Subbaraman, X. Xu, D. Fan, A. X. Wang, and R. Chen, “Micro-fluid Channel Based on Ultralow-loss Silicon Crossing Waveguide for Various Sensing,” CLEO: ATu2P. Symposium on Novel Light Sources and Photonic Devices in Optical Imaging I, June 10, 2014 (3:30pm-3:45pm)

81. X. Xu, H. Subbaraman, A. Hosseini, S. Chakravarty, and R. Chen, “Flexible Crystalline Silicon Nanomembrane Photonic Crystal Microcavity,” CLEO: SW1M. Micro and Nanophotonic Devices, June 11, 2014 (12:00pm-12:15pm)

82. Z. Pan, H. Subbaraman, X. Lin, Q. Li, C. Zhang, T. Ling, L. J. Guo, and R. T. Chen, “Reconfigurable Thermo-Optic Polymer Switch Based True-Time-Delay Network Utilizing Imprinting and Inkjet Printing,” CLEO: SMAG.4. Integrated Photonic Devices and Circuits, June 9, 2014 (4:45pm-5:00pm)

83. X. Zhang, A. Hosseini, H. Subbaraman, S. Wang, Q. Zhan, J. Luo, A. K. Jen, and R. Chen, “Wideband Electromagnetic Wave Sensing Using Electro-optic Polymer Infiltrated Silicon Slot Photonic Crystal Waveguide,” CLEO: SM2M. Novel Platforms for Silicon Photonics, June 9, 2014 (12:15pm-12:30pm)

84. X. Zhang, H. Subbaraman, A. Hosseini, and R. T. Chen, “Optimization of Highly Efficient Mode Converter for Coupling Light into Large-slot Photonic Crystal Waveguide,” Optical Interconnects Conference, Coronado, California, 4-7 May (2014)

85. H. Subbaraman, X. Lin, Z. Pan, and R. T. Chen, “Towards roll-to-roll manufacturing of polymer photonic devices,” SPIE OPTO, 8991-40, Feb 5 (2014)

86. H. Subbaraman, X. Xu, R. T. Chen, “Silicon nanomembrane-based compact true-time-delay module on unconventional substrates,” SPIE OPTO, 8990-16, Feb 3 (2014)

87. X. Xu, H. Subbaraman, S. Chakravarty, and R. T. Chen, “High-performance conformal sensors employing single-crystal silicon nanomembranes,” SPIE OPTO, 8990-28, Feb 4 (2014)

88. S. Chakravarty, H. Subbaraman, Y. Zou, Wei-Chang Lai, and R. T. Chen, “Methods to array photonic crystal microcavities for high-throughput high-sensitivity biosensing on a silicon-chip-based platform,” SPIE OPTO, 89900S-89900S-7, Feb 4 (2014) (Invited Talk)

89. Y. Zou, H. Subbaraman, S. Chakravarty, X. Xu, A. Hosseini, Wei-Chang Lai, and R. T. Chen, “Integrated strip and slot waveguides in silicon-on-sapphire for mid-infrared VOC detection in water,” SPIE OPTO, 8990 – 31, Feb 4 (2014)

90. H. Subbaraman, X. Lin, Tao Ling, X. Zhang, L. J. Guo, and R. T. Chen, “Printable EO Polymer Modulators,” in CLEO: 2013, OSA Technical Digest (Optical Society of America, 2013), paper CW1O.2.

91. X. Xu, H. Subbaraman (joint first author), A. Hosseini, and R. T. Chen, “Silicon Nanomembrane Based Photonic Devices on Foreign Substrates,” in CLEO: 2013, OSA Technical Digest (Optical Society of America, 2013), paper CTh1J.2.

92. K. Byun, H. Subbaraman, X. Lin, X. Xu, and R. T. Chen, "A 3µm channel, ink-jet printed CNT-TFT for phased array antenna applications," in Wireless and Microwave Circuits and Systems (WMCS), 2013 Texas Symposium on, 2013, pp. 1-3.

93. X. Xu, H. Subbaraman, D. Kwong, J. Covey, A. Hosseini, and R. T. Chen, “Colorless Grating Couplers Realized by Interleaving Dispersion Engineered Subwavelength Structures,” in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper CTh4F.7.

94. E. Danielson, H. Subbaraman, and A. Dodabalapur, “Inkjet printing of carrier transport layers for inverted organic solar cells,” Proceeding of Instrumentation, Metrology, and Standards for Nanomanufacturing, Optics, and Semiconductors VII, Vol. 8819, 881903 (2013)

95. H. Subbaraman, X. Xu, and R. T. Chen, “Silicon nanomembrane based photonic crystal waveguide true-time-delay lines on a glass substrate,” SPIE OPTO, Silicon Photonics VIII, 8629-49, San Francisco, CA, Feb 2-7, 8629-49 (2013)

96. H. Subbaraman, X. Xu, J. Covey, and R. T. Chen, “Subwavelength grating couplers for efficient light coupling into silicon nanomembrane based photonic devices,” SPIE OPTO, Optoelectronic Interconnects XIII, 8630-48, San Francisco, CA, Feb 2-7, 8630-48 (2013)

97. X. Xu, H. Subbaraman, A. Hosseini, D. N. Kwong, R. T. Chen, “Demonstration of silicon nanomembrane based photonic crystal waveguide PIN modulators on unusual substrates,” SPIE OPTO, Optoelectronic Interconnects XIII, 8630-48, San Francisco, CA, Feb 2-7, 8629-51 (2013)

98. J. Ahn, H. Subbaraman, S. Chakravarty, E. Tutuc, and R. T. Chen, “2D silicon-based surface normal vertical cavity photonic crystal waveguide array for high-density optical interconnects,” SPIE OPTO, Optoelectronic Interconnects XIII, 8630-48, San Francisco, CA, Feb 2-7, 8630-12 (2013)

99. X. Lin, A. Hosseini, X. Dou, H. Subbaraman, R. T. Chen, “Polymeric Micro-Lenses Aided Free Space Optical Interconnects,” CLEO: Science and Innovations, JTu4A. 27 (2013)

100. X. Lin, T. Ling, H. Subbaraman, L.J Guo, R.T Chen, “Polymeric Thermo-Optic Switch with Imprinting and Print-on-Demand Technology,” CLEO: Science and Innovations, CTu1L. 6 (2013)

101. X. Lin, Tao Ling, H. Subbaraman, L. J. Guo, and R. T. Chen, “Towards high-rate fabrication of photonic devices utilizing a combination of roll-to-roll compatible imprint lithography and ink-jet printing methods,” SPIE MOEMS-MEMS, 8613-53, San Francisco, CA, Feb 2-7, 8613-53 (2013)

102. X. Lin, A. Hosseini, X. Dou, H. Subbaraman, R. T. Chen, “Intra- and Inter- Board Optical Interconnects by Polymeric Waveguides and mirror Coupler with Inkjet-printed Micro-lenses,” IEEE Optical Interconnects Conference, paper TuD2, 2013

103. X. Lin, A. Hosseini, X. Dou, H. Subbaraman, and R. T. Chen, “Board-to-board optical interconnects using molded polymer waveguide with 45-degree mirrors and inkjet-printed micro-lenses as proximity vertical coupler,” SPIE OPTO, Optoelectronic Interconnects XIII, 8630-48, San Francisco, CA, Feb 2-7, 8630-9 (2013)

104. C.-Y. Lin, L. Zhu, H. Subbaraman, A. Hosseini, A. X. Wang, and R. T. Chen, “Si photonic crystal waveguide based delay lines,” Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 85640P (November 20, 2012)

105. H. Subbaraman, A. Dodabalapur, L. J. Guo, and R. T. Chen, “Metrology and instrumentation challenges with high-rate, roll-to-roll manufacturing of flexible electronic systems,” Proc. SPIE 8466, Instrumentation, Metrology, and Standards for Nanomanufacturing, Optics, and Semiconductors VI, 846603 (October 11, 2012)

106. X. Xu, H. Subbaraman (joint first author), J. Covey, D. Kwong, A. Hosseini, and R. T. Chen, "CMOS compatible subwavelength grating couplers for silicon integrated photonics," Photonics Conference (IPC), 2012 IEEE, vol., no., pp.350-351, 23-27 Sept. 2012

107. C.-Y. Lin, A. Hosseini, H. Subbaraman, Zheng Xue, A. Wang, and R. Chen, “Wavelength-Tunable on-Chip True Time Delay Lines Based on Photonic Crystal Waveguides for X-Band Phased Array Antenna Applications,” Silicon Photonics III, CTu3I.7, CLEO: 2012, San Jose, CA. 6-11 May 2012

108. X. Xu, H. Subbaraman (joint first author), A. Hosseini, D. Kwong, C.-Y. Lin, and R. Chen, “Stamp Printing of Silicon Nanomembrane Based Flexible Photonic Devices,” Silicon Photonics I, CM4A.7, CLEO: 2012, San Jose, CA. 6-11 May 2012

109. X. Xu, A. Hosseini, H. Subbaraman (joint first author), C.-Y. Lin, S. Rahimi, and R. T. Chen, “Extremely Low Vπ×L Slow Light Photonic Crystal Modulator with GHz Bandwidth,” 2012 Optical Interconnects Conference, WC5, May 20-23, Eldorado Hotel & Spa in New Mexico, USA

110. H. Subbaraman, X. Xu, N. Rahimi, A. Hosseini and R. T. Chen, “Silicon nanomembranes for high performance flexible photonic interconnects and devices,” in Optoelectronic Interconnects XII, SPIE OPTO, 21-26 January 2012, San Francisco, California United States 8267-15 (2011 accepted)

111. A. Hosseini, X. Xu, D. Kwong, H. Subbaraman, and R. T. Chen, “On the Mechanism of Efficient Coupling into Slow Light Photonic Crystal Waveguides,” in Quantum Electronics and Laser Science Conference, OSA Technical Digest (CD) (Optical Society of America, 2011), paper JTuI4.

112. H. Subbaraman, A. Hosseini, X. Xu, Yang Zhang, and R. T. Chen, “Design of a Novel, Cost-Effective Wide Field-Of-View Surface-Normal Optical Phased Array,” in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CFJ5

113. D. Pham, H. Subbaraman, M. Y. Chen, X. Xu, R. T. Chen, “Phase shifter using carbon nanotube thin-film transistor for flexible phased-array antenna,” Proc. of SPIE Vol 7936, 793604 (2011)

114. X. Xu, H. Subbaraman, D. Pham, A. Hosseini, C.-Y. Lin, Yang Zhang, X. Lin, X. Dou, and R. T. Chen, “Transfer and characterization of silicon nanomembrane based photonic devices on flexible polyimide substrate,” SPIE 2011, Vol. 7944

115. X. Xu, H. Subbaraman, D. T. Pham, A. Hosseini, A. Ghaffari, and R. T. Chen, "Flexible In-plane Photonic Devices Based on Transferrable Si Nanomembranes on Polyimide Film," 3rd International Photonics & OptoElectronics Meetings (POEM 2010) Journal of Physics: Conference Series 276, 012096 (2011)

116. A. Hosseini, D. N. Kwong, H. Subbaraman, and R. T. Chen, “Low-dispersion slow-light in silicon-on-insulator slot photonic crystal waveguide,” Proc. SPIE Vol. 7609, 76091A Feb. 23, 2010, San Francisco, California, USA

117. D. Pham, H. Subbaraman, M. Y. Chen, X. Xu, and R. T. Chen, “Bending tests of carbon nanotube thin-film transistors on flexible substrate,” SPIE 2010 conference on Carbon Nanotubes, graphene, and Associated Devices III, Vol.7761, pg. 77610R.

118. A. Hosseini, D. Kwong, H. Subbaraman, and R. T. Chen, “Demonstration of Compact 2x2 Multimode Interference coupler on Silicon Nanomembrane,” IEEE Group IV Photonics GPF 2010, Beijing, P1.25, 2010

119. R. T. Chen and H. Subbaraman, "Silicon nano- and micro-photonic devices," Invited paper, OptoElectronics and Communications Conference, issue 14, pp.  1 - 2 (OECC, Hong Kong, 13th - 17th July, 2009)

120. Y.-S. Chen, A. Hosseini, D. Kwong, Y. Zhao, H. Subbaraman, and R. T. Chen, “Modified Slab Photonic Crystal Structure for Delay Time Enhancement Using Capsule Shaped Holes,” (OECC, Hong Kong, 13th ¨C 17th July, 2009)

121. M. Y. Chen, X. Lu, H. Subbaraman, and R. T. Chen, “Fully printed phased-array antenna for space communications,” Proc. SPIE. Vol. 7318, pp. 731814-1 (2009)

122. M. Y. Chen, H. Subbaraman, and R. T. Chen, “Dual-concentric-core Photonic Crystal Fiber with -5400ps/nm/km Dispersion Coefficient,” in OFC/NFOEC Technical Conference, 24-26 Mar 2009, San Diego (2009)

123. H. Subbaraman, M. Y. Chen, and R. T. Chen, “Packaging and system demonstration of an X-band phased array antenna utilizing highly dispersive photonic crystal fiber based true-time-delay,” in Proc. SPIE, Vol. 7221, pp. 722107-1 (2009)

124. H. Subbaraman, M. Y. Chen, and R. T. Chen, “Spurious-Free Dynamic Range (SFDR) improvement in a true-time-delay system based on highly dispersive photonic crystal fiber,” in IEEE/LEOS Winter Topical Meeting Series, pp. 58-59, 12-14 Jan 2009, Innsbruck, Austria (2009)

125. H. Subbaraman, M. Y. Chen, and R. T. Chen, “Simultaneous Dual RF Beam Reception of an X-Band Phased Array Antenna Utilizing Highly Dispersive Photonic Crystal Fiber Based True-Time-Delay,” AOE 2008 Technical Conference, Oct 30 ¨C Nov 2, Shanghai, China (2008)

126. M. Y. Chen, H. Subbaraman, and R. T. Chen, “Highly dispersive photonic crystal fiber for beamforming,” in Proc. SPIE, Vol. 6838, 683801, (2007) (Invited Paper)

127. H. Subbaraman, P. Cao, M. Y. Chen, and R. T. Chen, “The Design and Fabrication of a Highly Dispersive Photonic Crystal Fiber for Phased Array Antenna Systems,” Proceedings of The OSA Topical Conference on Nanophotonics (NANO), pp. 92, Hangzhou, China, June 18-21, (2007)