Publications
Journal articles:
S. J. Dacuycuy, W. A. Shiroma, and A. T. Ohta, "Electrocapillary actuation of liquid metal in microchannels," Micromachines, doi: 10.3390/mi13040572, 2022. Link
M. U. Baig, K. S. Elassy, A. Host-Madsen, A. T. Ohta, W. A. Shiroma, and A. Nosratinia, “Leveraging discrete modulation and liquid metal antennas for interference reduction,” EURASIP Journal on Wireless Communications and Networking, doi: 10.1186/s13638-021-02019-w, 2021. Link
T. T. F. Huang, T. Kosasa, B. Walker, C. Arnett, C. T. F. Huang, C. Yin, Y. Harun, H. J. Ahn, and A. Ohta, “Deep learning neural network analysis of human blastocyst expansions from time-lapse image files,” Reproductive Biomedicine Online, doi: 10.1016/j.rbmo.2021.02.015, 2021. Link
Y. Li, X. Liu, Q. Huang, A. T. Ohta, and T. Arai, “Bubbles in microfluidics: an all-purpose tool for micromanipulation,” Lab on a Chip, vol. 21, pp. 10161-1035, 2021. Link
M. A. Rahman and A. T. Ohta, “ Micromanipulation with microrobots,” IEEE Open Journal of Nanotechnology, vol. 2, pp. 8-15, doi: 10.1109/OJNANO.2021.3050496, 2021. Link
K. S. Elassy, M. A. Rahman, W. A. Shiroma, and A. T. Ohta, “Liquid-metal nodal sheet for reconfigurable devices and circuits,” IEEE Access, vol. 8, pp. 167596–167603, doi: 10.1109/ACCESS.2020.3023672, 2020. Link
K. S. Elassy, M. A. Rahman, N. S. Yama, W. A. Shiroma, and A. T. Ohta, “Complex permittivity of NaOH solutions used in liquid-metal circuits,” IEEE Access, vol. 7, no. 1, pp. 1501150-150156, doi: 10.1109/ACCESS.2019.2945773, 2019. Link
A. M. Watson, T. F. Leary, K. S. Elassy, A. G. Mattamana, M. A. Rahman, W. A. Shiroma, A. T. Ohta, and C. E. Tabor, “Physically reconfigurable RF liquid electronics via Laplace barriers,” IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 12, pp. 4881-4889, 2019. Link
K. J. Sarabia, A. T. Ohta, and W. A. Shiroma, “Pixelated dual-dipole antenna using electrically actuated liquid metal,” Electronics Letters, vol. 55, no. 19, pp. 1032-1034, 2019. Link
K. S. Elassy, T. K. Akau, W. A. Shiroma, S. Seo, and A. T. Ohta, “Low-cost rapid fabrication of conformal liquid-metal patterns,” Applied Sciences, vol. 9, no. 8, 1565, doi:10.3390/app9081565, 2019. Link
J. Melcher, K. S. Elassy, R. C. Ordonez, C. Hayashi, A. T. Ohta, and D. Garmire, “Spray-on liquid-metal electrodes for graphene field-effect transistors,” Micromachines, vol. 10, no. 1, article number 54, 2019. Link
G. Zhang, R. Gough, M. Moorefield, K. Elassy, A. T. Ohta, and W. A. Shiroma, “An electrically actuated liquid-metal gain-reconfigurable antenna,” International Journal of Antennas and Propagation, vol. 2018, Article ID 7595363, doi: 10.1155/2018/7595363, 2018. Link
K. J. Sarabia, S. S. Yamada, M. R. Moorefield, A. W. Combs, A. T. Ohta, and W. A. Shiroma, “Frequency-reconfigurable dipole antenna using liquid-metal pixels,” International Journal of Antennas and Propagation, vol. 2018, Article ID 1248459, doi:10.1155/2018/1248459, 2018. Link
K. J. Sarabia, W. A. Shiroma, and A. T. Ohta, “Pixelated reconfiguration using electrically actuated liquid metal,” Electronics Letters, vol. 54, no. 4, pp. 192-194, 2018. Link
A. W. Combs, W. A. Shiroma, and A. T. Ohta, “Ferrofluidic actuation of liquid metal for radio-frequency applications,” Electronics Letters, vol. 53, no. 3, pp. 151-153, 2018. Link
G. B. Zhang, R. C. Gough, M. R. Moorefield, K. J. Cho, A. T. Ohta, and W. A. Shiroma, "A liquid-metal polarization-pattern-reconfigurable dipole antenna," IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 1, pp. 50-53, 2018. Link
M. R. Moorefield, R. C. Gough, A. T. Ohta, and W. A. Shiroma, “An electrically actuated DC-to11-GHz liquid-metal switch,” IEEE Access, vol. 6, pp. 1261-1266, 2017. Link
M. A. Rahman, N. Takahashi, K. F. Siliga, N. K. Ng, Z. Wang, and A. T. Ohta, "Vision-assisted micromanipulation using closed-loop actuation of multiple microrobots," Journal of Robotics and Biomimetics, vol. 4, no. 7, DOI: 10.1186/s40638-017-0064-4, 2017. PubMed Central PMCID: PMC5662703. Link
K. J. Sarabia, S. S. Yamada, R. C. Gough, M. R. Moorefield, A. W. Combs, W. A. Shiroma, and A. T. Ohta, "Out-of-plane continuous electrowetting actuation of liquid metal," Electronics Letters, vol. 53, no. 25, pp. 1635-1636, 2017. Link
M. A. Rahman, Z. Wang, and A. T. Ohta, "Collaborative micromanipulation using multiple bubble microrobots in an open reservoir," Micro and Nano Letters, vol. 12, no. 11, pp. 891-896, 2017. Link
M. R. Moorefield, A. T. Ohta, and W. A. Shiroma, "Paper-based capillary actuation of liquid metal," Electronics Letters, vol. 53, pp. 1372-1373, 2017. Link
M. A. Rahman, J. Cheng, Z. Wang, and A. T. Ohta, "Cooperative micromanipulation using the independent actuation of fifty microrobots in parallel," Scientific Reports, vol. 7, article number 3278, 2017. Link
Q. Fan, W. Hu, and A. T. Ohta, “Localized single-cell lysis and manipulation using optothermally induced bubbles,” Micromachines, vol. 8, no. 4, article number 121, 2017. PubMed Central PMCID: PMC5766267. Link
M. A. Rahman, W. A. Shiroma, and A. T. Ohta, “Liquid-metal capacitors with a 42:1 tuning ratio,” Electronics Letters, vol. 53, no. 11, pp. 710-711, 2017. Link
M. R. Moorefield, R. C. Gough, A. M. Morishita, J. H. Dang, A. T. Ohta, and W. A. Shiroma, “Frequency-tunable patch antenna with liquid-metal-actuated loading slot,” Electronics Letters, vol. 52, no. 7, pp. 498-500, 2016. Link
R. C. Gough, J. H. Dang, M. R. Moorefield, G. B. Zhang, L. H. Hihara, W. A. Shiroma, and A. T. Ohta, “Self-actuation of liquid metal via redox reaction,” ACS Applied Materials & Interfaces, DOI: 10.1021/acsami.5b09466, 2016. Link
J. H. Dang, R. C. Gough, A. M. Morishita, A. T. Ohta, and W. A. Shiroma, "Liquid-metal-based reconfigurable components for RF front ends," IEEE Potentials, July/August 2015, pp. 24-30, 2015. Link
R. C. Gough, A. M. Morishita, J. H. Dang, M. R. Moorefield, W. A. Shiroma, and A. T. Ohta, "Rapid electrocapillary deformation of liquid metal with reversible shape retention," Micro and Nano Systems Letters, vol. 3, no 4, DOI: 10.1186/s40486-015-0017-z, 2015. Link
Q. Fan, W. Hu, and A. T. Ohta, "Efficient single-cell poration by microsecond laser pulses," Lab on a Chip, vol. 15, no. 2, pp. 581-588, 2015. Link
W. Hu, Q. Fan, and A. T. Ohta, "Interactive actuation of multiple optothermocapillary flow-addressed bubble microrobots," Robotics and Biomimetics, vol. 1, doi:10.1186/s40638-014-0014-3, 2014. Link
R. C. Gough, A. M. Morishita, J. H. Dang, W. Hu, W. A. Shiroma, and A. T. Ohta, "Continuous electrowetting of non-toxic liquid metal for RF applications," IEEE Access, vol. 2, pp. 874-882, 2014. Link
Q. Fan, W. Hu, and A. T. Ohta, "Laser-induced microbubble poration of localized single cells," Lab on a Chip, vol. 14, no. 9, pp. 1572-1578, 2014. PubMed: 24632785, NIHMSID: 573933. Link
A. M. Morishita, C. K. Y. Kitamura, A. T. Ohta, and W. A. Shiroma, "Two-octave tunable liquid-metal monopole antenna," Electronics Letters, vol. 50, no. 1, pp. 19-20, 2014. Link
A. M. Morishita, C. K. Y. Kitamura, A. T. Ohta, and W. A. Shiroma, "A liquid-metal monopole array with tunable frequency, gain, and beam steering," IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 1388-1391, 2013. Link
W. Hu, Q. Fan, and A. T. Ohta, "An opto-thermocapillary cell micromanipulator," Lab on a Chip, vol. 13, no. 12, pp. 2285-2291, 2013. PMC: 3681525, NIHMSID: 479065. (Lab on a Chip Top 10% article) Link
W. Hu, K. S. Ishii, Q. Fan, and A. T. Ohta, "Hydrogel microrobots actuated by optically generated vapour bubbles," Lab on a Chip, vol. 12, no. 19, pp. 3821-3826, 2012. Link
K. S. Ishii, W. Hu, S. A. Namekar, and A. T. Ohta, "An optically controlled 3D cell culturing system," Advances in OptoElectronics, vol. 2011, Article ID 253989, 8 pages, 2011.Link
W. Hu, K. S. Ishii, and A. T. Ohta, "Micro-assembly using optically controlled bubble microrobots," Applied Physics Letters, vol. 99, p. 094103, 2011. Link
B. J. Lei, A. Zamora, T. F. Chun, A. T. Ohta, and W. A. Shiroma, "A wideband, pressure-driven, liquid-tunable frequency selective surface," IEEE Microwave and Wireless Components Letters, vol. 21, pp. 465-467, 2011. Link
W. Hu and A. T. Ohta, "Aqueous droplet manipulation by optically induced Marangoni circulation," Microfluidics and Nanofluidics, vol. 11, pp. 307-316, 2011. Link
A. T. Ohta, M. Garcia, J. K. Valley, L. Banie, H.-Y. Hsu, A. Jamshidi, S. L. Neale, T. Lue, and M. C. Wu, "Motile and non-motile sperm diagnostic manipulation using optoelectronic tweezers," Lab on a Chip, vol. 10, pp. 3213-3217, 2010. Link
H.-Y. Hsu, A. T. Ohta, P.-Y. Chiou, A. Jamshidi, S. L. Neale, and M. C.Wu, "Phototransistor-based optoelectronic tweezers for dynamic cell manipulation in cell culture media,"Lab on a Chip, vol. 10, no. 2, pp. 165-172, 2010. Link
J. K. Valley, A. T. Ohta, H.-Y. Hsu, S. L. Neale, A. Jamshidi, and M. C. Wu, "Optoelectronic tweezers as a tool for parallel single-cell manipulation and stimulation," IEEE Transactions on Biomedical Circuits and Systems, vol. 3, no. 6, pp. 424-431, 2009. Link
A. Jamshidi, S. L. Neale, K. Yu, P. J. Pauzauskie, P. J. Schuck, J. K. Valley, H.-Y. Hsu, A. T. Ohta, and M. C. Wu, "NanoPen: Dynamic, low-power, and light-actuated patterning of nanoparticles," Nano Letters, vol. 9, no. 8, pp. 2921-2925, 2009. Link
A. N. K. Lau, A. T. Ohta, H. L. Phan, H.-Y. Hsu, A. Jamshidi, P.-Y. Chiou, M. C. Wu, "Antifouling coatings for optoelectronic tweezers," Lab on a Chip, vol. 9, pp. 2952-2957, 2009. Link
G. Shah, A. T. Ohta, E. P. Y. Chiou, M. C. Wu, C.-J. Kim, "EWOD-driven droplet microfluidic device integrated with optoelectronic tweezers as an automated platform for cellular isolation and analysis," Lab on a Chip, vol. 9, pp. 1732-1739, 2009. Link
J. K. Valley, S. Neale, H. Y. Hsu, A. T. Ohta, A. Jamshidi, M. C. Wu, "Parallel single-cell light-induced electroporation and dielectrophoretic manipulation," Lab on a Chip, vol. 9, pp. 1714-1720, 2009. Link
M.-C. Tien, A. T. Ohta, K. Yu, S. L. Neale, M. C. Wu, "Heterogeneous integration of InGasAsP microdisk laser on a silicon platform using optofluidic assembly," Applied Physics A: Materials Science & Processing, vol. 95, no. 4, pp. 967-972, 2009. Link
P.-Y. Chiou, A. T. Ohta, A. Jamshidi, H. Y. Hsu, M. C. Wu,"Light-actuated ac electroosmosis for nanoparticle manipulation," IEEE Journal of Microelectromechanical Systems, vol. 17, no.3, pp. 525-531, 2008. Link
J. K. Valley, A. Jamshidi, A. T. Ohta, H.-Y. Hsu, M. C. Wu, "Operational regimes and physics present in optoelectronic tweezers," IEEE Journal of Microelectromechanical Systems, vol. 17, no. 2, pp. 342-350, 2008. Link
A. Jamshidi, P. J. Pauzauskie, P. J. Schuck, A. T. Ohta, P.-Y. Chiou, J. Chou, P. Yang, M. C. Wu, "Dynamic manipulation and separation of individual semiconducting and metallic nanowires," Nature Photonics, vol. 2, no. 2, pp. 86-69, 2008. Link
A. T. Ohta, A. Jamshidi, J. K. Valley, H.-Y. Hsu, M. C. Wu, "Optically actuated thermocapillary movement of gas bubbles on an absorbing substrate," Applied Physics Letters, vol. 91, no. 7, pp. 074103-3, 2007. Link
A. T. Ohta, P. Y. Chiou, T. H. Han, J. C. Liao, U. Bhardwaj, E. R. B. McCabe, F. Yu, R. Sun, M. C. Wu, "Dynamic cell and microparticle control via optoelectronic tweezers,"IEEE Journal of Microelectromechanical Systems, vol. 16, no. 3, pp. 491-499, 2007. Link
A. T. Ohta, P. Y. Chiou, H. L. Phan, S. W. Sherwood, J. M. Yang, A. N. K. Lau, H.-Y. Hsu, A. Jamshidi, M. C. Wu, "Optically-controlled cell discrimination and trapping using optoelectronic tweezers," IEEE Journal of Selected Topics in Quantum Electronics, vol. 13, no. 2, pp. 235-243, 2007. Link
P. Y. Chiou, A. T. Ohta, M. C. Wu, "Massively parallel manipulation of single cells and microparticles using optical images," Nature, vol. 436, no. 7049, pp. 370-372, 2005. Link
Conference papers:
K. S. Elassy, J. Rahman, A. W. Combs, D. G. Garmire, W. A. Shiroma, and A. T. Ohta, “Low-cost rapid prototyping of high-resolution printed liquid-metal circuits and devices,” IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), 2020.
M. Paryavi, R. Chio, M. A. Rahman, I. MacPherson, and A. T. Ohta, “Towards high-throughput single-cell proteomics using droplet microfluidics,” IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), 2020.
N. S. Yama, K. S. Elassy, W. A. Shiroma, and A. T. Ohta, “Predictive design of a liquid-metal switch actuated by continuous electrowetting,” 2020 Texas Symposium on Wireless & Microwave Circuits & Systems, Waco, TX, May 2020.
N. Mahjabeen, J. Bright, S. R. Aroor, N. Virushabadoss, S. Surendar, K. S. Elassy, W. A. Shiroma, A. T. Ohta, and R. Henderson “Low-cost rapid prototyping of ring resonator for dielectric charac-terization of packaging substrates,” 2020 Texas Symposium on Wireless & Microwave Circuits & Systems, Waco, TX, May 2020.
M. Y. Harun, T. Huang, and A. T. Ohta, “Inner cell mass and trophectoderm segmentation in hu-man blastocyst images using deep neural network,” IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Gwangju, South Korea, Nov. 2019.
M. Y. Harun, M. A. Rahman, J. Mellinger, W. Chang, T. Huang, B. Walker, K. Hori, and A. T. Ohta, “Image segmentation of zona-ablated human blastocysts,” IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Gwangju, South Korea, Nov. 2019.
T. Huang, B. Walker, M. Y. Harun, M. A. Rahman, J. Mellinger, W. Chang, and A. T. Ohta, “Automated computer analysis of human blastocyst expansion from embryoscope time-lapse image files,” in American Society for Reproductive Medicine (ASRM) Scientific Congress and Expo, Philadelphia, PA, Oct. 18, 2019.
A. M. Watson, K. Elassy, T. Leary, M. A. Rahman, A. Ohta, W. Shiroma, and C. E. Tabor, “Enabling reconfigurable all-liquid microcircuits via Laplace barriers to control liquid metal,” 2019 IEEE MTT-S International Microwave Symposium, Boston, MA, Jun. 2019.
A. M. Morishita, M. R. Moorefield, G. B. Zhang, R. C. Gough, J. H. Dang, K. S. Elassy, W. A. Shiroma, and A. T. Ohta, “RECi-P: Rapid, Economical Circuit Prototyping,” 2019 Texas Symposium on Wireless & Microwave Circuits & Systems, Waco, TX, Mar. 2019.
M. A. Rahman, K. Matthews, M. Garcia, A. T. Ohta, “Measurement of impedance changes associated with developmental phases in Artemia cysts,” IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Honolulu, HI, Dec. 2018.
M. R. Moorefield, A. T. Ohta, and W. A. Shiroma, “A polarization-reconfigurable antipodal dipole antenna using liquid metal,” IEEE Asia-Pacific Microwave Conference, Kyoto, Japan, Nov. 2018.
M. U. Baig, K. S. Elassy, A. Høst-Madsen, A. Ohta, W. Shiroma, and A. Nosratinia, “Managing interference through discrete modulation and liquid metal antennas,” 2018 IEEE 88th Vehicular Technology Conference, Chicago, IL, Aug. 2018.
A. Combs, K. A. Kam, A. T. Ohta, and W. A. Shiroma, “A ferrofluidically actuated liquid-metal RF switch,” 2018 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), Ann Arbor, MI, Jul. 2018.
S. S. Yamada, K. J. Sarabia, A. T. Ohta, and W. A. Shiroma, "Towards flexible patch antennas: characterization of introduced gaps," 7th Annual IEEE International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), Honolulu, HI, Jul. 2017.
D. T. Vera, I. Lum, A. T. Ohta, "Microporous capacitive sensors for use in surgical procedures," 7th Annual IEEE International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), Honolulu, HI, Jul. 2017.
I. Lum, D. Vera, M. Garcia, A. T. Ohta, "Instrument mounted liquid-pressure sensor system for biomedical applications," 7th Annual IEEE International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), Honolulu, HI, Jul. 2017.
K. J. Sarabia, S. S. Yamada, M. R. Moorefield, A. W. Combs, W. A. Shiroma, and A. T. Ohta, "3-D actuation of liquid metal with continuous electrowetting," 7th Annual IEEE International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), Honolulu, HI, Jul. 2017.
M. A. Rahman and A. T. Ohta, "Parallel actuation of multiple bubble microrobots in saline solution in an open reservoir," 12th IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), Los Angeles, CA, Apr. 2017.
K. Matthews, M. A. Rahman, M. Garcia, and A. T. Ohta, "Rapid measurement of impedance changes associated with developmental phases in Artemia cysts," 12th IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), Los Angeles, CA, Apr. 2017.
L. Moxey and A. T. Ohta, "Development and prototyping of an autonomous, low-cost oceanographic drifter buoy with real-time global bi-directional satellite communication capabilities," presented at the 2016 American Geophysical Union (AGU) Fall Meeting, San Francisco, CA, Dec. 2016.
J. Cheng, C. B. Walton, and A. T. Ohta, "Feasibility of an ultrasonic bone-marrow harvester," IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Macau, China, Oct. 2016.
N. Takahashi, M. A. Rahman, A. T. Ohta, and Z. Wang, "Analysis of geometric and motion characteristics of bubble microrobots for caging based cell manipulation" IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Macau, China, Oct. 2016.
M. A. Rahman, N. Takahashi, Z. Wang, and A. T. Ohta, "Closed-loop vision-assisted actuation of a bubble microrobot," IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Macau, China, Oct. 2016.
W. Hu, K. Ishii, and A. T. Ohta, "Cell patterning in a hydrogel using optically induced dielectrophoresis," IEEE Optical MEMS and Nanophotonics Conference (OMN), Singapore, July 2016.
A. Z. Trimble, W. A. Shiroma, D. G. Garmire, and A. T. Ohta, "Forming multidisciplinary Vertically Integrated Project (VIP) teams: challenges and synergy," 123rd ASEE Annual Conference & Exposition, New Orleans, LA, paper ID 15908, June 2016.
N. Takahashi, M. A. Rahman, J. Cheng, A. T. Ohta, and Z. Wang, "Path planning and control for micro-object caging using bubble microrobot," Robotics and Mechatronics Conference, Yokohama, Japan, June 2016.
G. B. Zhang, R. C. Gough, M. R. Moorefield, A. T. Ohta, and W. A. Shiroma, "An electrically actuated liquid-metal switch with metastable switching states," 2016 IEEE MTT-S International Microwave Symposium, San Francisco, CA, May 2016.
N. Takahashi, M. A. Rahman, J. Cheng, A. T. Ohta, and Z. Wang, "Automated micro-object caging using bubble microrobots," 11th IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), Matsushima, Japan, Apr. 2016.
R. C. Gough, R. C. Ordonez, M. R. Moorefield, W. A. Shiroma, and A. T. Ohta, "Reconfigurable liquid-metal antenna with integrated surface-tension actuation," 11th IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), Matsushima, Japan, Apr. 2016.
M. A. Rahman, J. Cheng, and A. T. Ohta, "Parallel actuation and independent addressing of many bubble microrobots," 11th IEEE International Conference on Nano/Micro Engineered & Molecular Systems (NEMS), Sendai, Japan, Apr. 2016.
M. R. Moorefield, R. C. Gough, J. H. Dang, A. T. Ohta, and W. A. Shiroma, "A planar liquid-metal shunt switch," IEEE ICWITS-ACES 2016 Conference, Honolulu, HI, Mar. 2016.
M. A. Rahman, R. C. Gough, M. R. Moorefield, G. B. Zhang, W. A. Shiroma, and A. T. Ohta, "Electrically actuated liquid metal for reconfigurable RF devices," IEEE ICWITS-ACES 2016 Conference, Honolulu, HI, Mar. 2016.
M. A. Rahman, J. Cheng, and A. T. Ohta, “Automated cooperative micro-assembly using multiple bubble microrobots,” 9th IEEE International Conference on Nano/Molecular Medicine and Engineering (NANOMED), Honolulu, HI, Nov. 2015.
J. H. Dang, R. C. Gough, A. M. Morishita, A. T. Ohta, and W. A. Shiroma, “Liquid-metal-based phase shifter with reconfigurable EBG filling factor,” 2015 IEEE MTT-S International Microwave Symposium, Phoenix, AZ, May 2015.
J. H. Dang, R. C. Gough, A. M. Morishita, A. T. Ohta, and W. A. Shiroma, “A tunable X-band substrate integrated waveguide cavity filter using reconfigurable liquid-metal perturbing posts,” 2015 IEEE MTT-S International Microwave Symposium, Phoenix, AZ, May 2015.
M. A. Rahman, J. Cheng, Q. Fan, and A. T. Ohta, “Automated actuation of multiple bubble microrobots using computer-generated holograms,” SPIE Sensing Technology and Applications, Baltimore, MD, Apr. 2015.
A. M. Morishita, J. H. Dang, R. C. Gough, A. T. Ohta, and W. A. Shiroma, “A tunable amplifier using reconfigurable liquid-metal double-stub tuners,” 2015 Texas Symposium on Wireless & Microwave Circuits & Systems, Waco, TX, Apr. 2015.
R. C. Gough, J. H. Dang, A. M. Morishita, A. T. Ohta, and W. A. Shiroma, “Reconfigurable coupled-line bandpass filter with electrically actuated liquid-metal tuning,” 2014 Asian-Pacific Microwave Conference, Sendai, Japan, Nov. 2014.
A. M. Morishita, R. C. Gough, J. H. Dang, A. T. Ohta, and W. A. Shiroma, "A liquid-metal reconfigurable log-periodic balun," 2014 IEEE MTT-S International Microwave Symposium, Tampa, FL, Jun. 2014.
R. C. Gough, J. H. Dang, Andy M. Morishita, A. T. Ohta, and W. A. Shiroma, "Frequency-tunable slot antenna using continuous electrowetting of liquid metal," 2014 IEEE MTT-S International Microwave Symposium, Tampa, FL, Jun. 2014. (Second place in Student Paper Competition)
Q. Fan, W. Hu, and A. T. Ohta, "Molecular delivery and transfection by laser-induced oscillating microbubbles," 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS), Honolulu, HI, Apr. 2014.
W. Hu, Q. Fan, A. H. Nicholas, M. C. Hagenow, and A. T. Ohta, "Bubble micro-manipulator for co-operative micro-manipulation," 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS), Honolulu, HI, Apr. 2014.
W. Hu, Q. Fan, and A. T. Ohta, "Assembly of cell-laden microgels by an optically controlled bubble manipulator," 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS), pp. 997-999, Freiburg, Germany, Oct. 2013.
Q. Fan, W. Hu, and A. T. Ohta, "Light-induced microbubble poration of localized cells," 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Osaka, Japan, Jul. 2013.
W. Hu, Q. Fan, W. Tonaki, and A. T. Ohta, "Bubble-driven light-absorbing hydrogel microrobot for the assembly of bio-objects," 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Osaka, Japan, Jul. 2013.
C. K. Kitamura, A. M. Morishita, T. F. Chun, W. G. Tonaki, A. T. Ohta, and W. A. Shiroma, "A liquid-metal reconfigurable Yagi-Uda monopole array," 2013 IEEE MTT-S International Microwave Symposium, Seattle, WA, Jun. 2013.
W. G. Tonaki, W. Hu, A. T. Ohta, and W. A. Shiroma, "A reconfigurable, liquid-metal-based low-pass filter with reversible tuning," 2013 IEEE MTT-S International Wireless Symposium, Beijing, China, Apr. 2013.
A. T. Ohta, S. Guo, B. J. Lei, W. Hu, and W. A. Shiroma, "A liquid-metal tunable electromagnetic-bandgap microstrip filter," IEEE International Conference on Wireless Information Technology and Systems, Nov. 2012.
W. Hu, Q. Fan, K. S. Ishii, and A. T. Ohta, "An opto-thermocapillary cell manipulator," 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences (μTAS), pp. 1654- 1656, Oct. 2012.
S. Guo, B. J. Lei, W. Hu, W. A. Shiroma, and A. T. Ohta, "A tunable low-pass filter using a liquid-metal reconfigurable periodic defected ground structure," Proceedings of the International Micro-wave Symposium (IMS), June 2012.
B. J. Lei, W. Hu, A. T. Ohta, and W. A. Shiroma, "A liquid-metal reconfigurable double-stub tuner," Proceedings of the International Microwave Symposium (IMS), June 2012.
K. S. Ishii, W. Hu, and A. T. Ohta, "Cooperative micromanipulation using optically controlled bubble microrobots," Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), pp. 3443-3448, May 2012.
W. Hu, K. S. Ishii, and A. T. Ohta, "Micro-assembly using optically controlled bubble microrobots in saline solution," Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), pp. 733-738, May 2012. (Finalist for Best Conference Paper award)
W. Hu, K. S. Ishii, and A. T. Ohta, "Micro-assembly using optically controlled bubbles," Proc. of the 16th International Conference on Optical MEMS and Nanophotonics, pp. 53-54, Aug. 2011.
X. Zhang, A. T. Ohta, D. Garmire, "Rapid monodisperse microencapsulation of single cells," IEEE Engineering in Medicine and Biology Society Meeting, Sept. 2010.
M. Garcia, A. Ohta, E. Vittinghof, G. Lin, M. Wu, and T. Lue, "A novel non-invasive, motility-independent sperm sorting method and technology to identify and retrieve individual viable non-motile sperm for ICSI," American Urological Association Annual Meeting, abstract 1876, 2010.
A. T. Ohta, M. Garcia, T. Lue, and M. C. Wu, "Optoelectronic tweezers for cell manipulation and sorting," 4th Asian and Pacific Rim Symposium on Biophotonics (APBP), 2009.