Conferences

1. (Invited) SPIE Optics and Photonics, San Diego, Aug. 2025.

2. (Poster) IEEE Biosensors Conference, San Diego, Jul. 2025.

3. International Society of Extracellular Vesicles Annual Meeting, Vienna Austria, May. 2025.

4. (Invited) SPIE Photonics West, San Francisco CA, Jan. 2025.

5. (Invited) International Conference of Raman Spectroscopy (ICORS), Rome Italy, Aug. 2024.

6. (Invited) IEEE Biosensors Conference, Cambridge UK, Jul. 2024.

7. (Invited) SPIE Photonics West, San Francisco CA, Jan. 2024.

8. (Invited), SPIE Optics & Photonics, San Diego CA, Aug. 2023.

9. CLEO Europe, Munich Germany, June. 2023.

10. (Invited) A new label-free plasmonic imaging technique for quantitative analysis of

transparent nanoscale objects approaching molecular size, SPIE Photonics West, San

Francisco CA, Jan. 2023.

11. (Invited) Arrayed Nanoplasmonic Sensors and Actuators, ICORS conference, Long Beach,

Aug. 2022.

12. (Invited) Portable optical and spectroscopic techniques for environmental and biomedical

applications, SCIX, Sept. 2021.

13. (Invited) A new label-free plasmonic imaging technique for quantitative analysis of transparent

nanoscale objects approaching molecular size, EIPBN, Zoom, May 2021

14. “Nanoplasmonic microbubble and nanoplasmonic sensing-two birds in one stone,” OSA Optical

Sensors, Zoom, 2020.

15. “Smartphone sensing of multiple heavy metal ion contaminants in drinking water,” OSA Optical

Sensors, Zoom, 2020.

16. “Nanoplasmonic imaging of extracellular exosomes on undercut arrayed gold nanodisks,” OSA

Optical Sensors, Zoom, 2020.

17. (Invited) “Multifunctional meta-surfaces for pathogen fingerprinting and killing,” SciX, Palm

Springs, Oct 2019.

18. (Invited) “Thermal optics of ordered arrays of plasmon nanoparticles in context of SERS, cell

optoporation, and pathogen destruction,” Saratov Fall Meeting 2019.

19. (Invited) “Integrated holographic optical tweezers Raman (HOT-Raman) imaging,” SciX, Palm

Springs, Oct 2019.

20. (Invited) “Plasmonic bio-chip for RGB cameras,” SciX, Palm Springs, Oct 2019.

21. “Novel applications of SERS labels in molecular sensing and imaging,” SciX, Palm Springs, Oct

2019.

22. (Invited) “Extraordinary LSPR sensitivity on plasmonically-coupled alloy disk array enables

ultrasensitive smartphone biosensing,” APCAP, Incheon South Korea, Aug 2019.

23. “Multimodal and Multifunctional Plasmonic Nanostructures and Techniques,” IEEE Optical MEMS

and Nanophotonics, Daejeon South Korea, Jul 2019.

24. “Holographic optical tweezers assisted imaging spectroscopy,” OSA Biophotonics, Tucson AZ, Apr

2019.

25. (Invited) “Smartphone microscopy and nanocolorimetry,” OSA Biophotonics, Tucson AZ, Apr 2019.

26. “Aptamer-based SERS detection and quantitation of small molecules and enzymes on plasmonic

nanostructures,” OSA Biophotonics, Tucson AZ, Apr 2019.

27. “Plasmonic metasurfaces for sensing, typing, and killing of pathogens,” SPIE Photonics West, San

Francisco, Jan 2019.

28. “Multimodal signal amplification by collaborative plasmonic intensification and catalytic

multiplication (c-PI/CM),” SPIE Photonics West, San Francisco, Jan 2019.

29. “Hyperspectral chemical imaging enabled by spatial light modulators,” SPIE Photonics West, San

Francisco, Jan 2019.

30. “Dotlens smartphone microscopy and nano-colorimetry,” SPIE Photonics West, San Francisco, Jan

2019.

31. (Invited) “3D plasmonic nanoarchitectures for extreme light concentration,” SciX, Atlanta GA, Oct

2018.

32. “DotLens smartphone microscopy: STEM education, citizen science, and beyond,” SciX, Atlanta GA,

Oct 2018.

33. “Label-free biomolecular sensing by SERS on nanoporous gold nanoparticle arrays,” IEEE Nano,

Cork Ireland, July 2018.

34. (Invited) “Photothermal generation of programmable microbubbles array on nanoporous gold disks,”

IEEE OMN, Lausanne Switzerland, July 2018.

35. “Local refractive index sensitivity of nanoporous gold nanodisk array,” OSA Sensors, Zurich

Switzerland, July 2018.

36. Emerging techniques in smartphone microscopy: integrated smartphone cytometer, SPIE

Translational Biophotonics TBP100-30, Houston, May 2018. 

37. Multi-point side-firing optical fiber for biomedical applications, SPIE Translational Biophotonics

TBP100-34, Houston, May 2018. 

38. Plasmonic nanoparticle-based expansion microscopy, SPIE Translational Biophotonics TBP100-36,

Houston, May 2018. 

39. Mitigating fringing in discrete frequency infrared imaging using time-delayed integration, SPIE

Translational Biophotonics TBP100-50, Houston, May 2018. 

40. Multiplexed expansion microscopy with quantum dots, SPIE Translational Biophotonics TBP100-61,

Houston, May 2018. 

41. (Invited Talk) “Robust and high-efficiency photothermal conversion on nanoporous gold disk array

for sensing and actuation applications,” SPIE OTA, Beijing China, May 2018.

42. (Invited Talk) “Ensemble plasmonic coupling in disordered arrays and applications in biosensing and

super-resolution histopathology,” SPIE DCS, Orlando FL, Apr 2018.

43. (Invited Talk) “Far-field and near-field plasmonic coupling in disordered nanoparticle arrays and

applications in ultra-sensitive biosensing and super-resolution histopathology,” SciX, Reno NV, Oct

2017.

44. (Invited Talk) “Scalable nanofabrication of cost-effective 3D plasmonic chips for point-of-care

applications,” SciX, Reno NV, Oct 2017.

45. (Invited Talk) “3D plasmonic nanoarchitectures for chemical and biosensing,” SPIE Optics &

Photonics, San Diego CA, Aug 2017.

46. (Invited Talk) “Cost-effective plasmonic nanosurface and polymer lens for chemical and biosensing,”

ECI Advances in Optics for Biotechnology, Medicine and Surgery, Snowmass CO, Jul 2017.

47. (Invited Talk) “Nanoporous gold array: a versatile plasmonic chip for high-performance surface-

enhanced spectroscopy and analytical sensing,” PittCon, Chicago IL, Mar 2017.

48. (Invited Talk) “Characterization and applications of nanoporous gold array in the near-infrared,” ACS

Southwest Regional Conference, Galveston TX, Nov 2016.

49. (Invited Talk) “Molecular fingerprinting on arbitrary surfaces and flexible substrates using surface-

enhanced spectroscopy and imaging,” ACS Southwest Regional Conference, Galveston TX, Nov

2016.

50. (Podium) IEEE Sensors, Orlando FL, Oct 2016.

51. (Podium) IEEE Sensors, Orlando FL, Oct 2016.

52. (Invited Talk) “Hyperspectral Raman microscopy enables robust and flexible molecular sensing and

imaging on nanoporous gold nanoparticles,” SciX/FACSS, Minneapolis MN, Sept 2016.

53. (Invited Talk) “Characterization and applications of nanoporous gold nanoparticles in the near-

infrared,” SciX/FACSS, Minneapolis MN, Sept 2016.

54. (Invited Talk) “Plasmon-enhanced molecular sensing and imaging on nanoporous gold disks,”

META, Malaga Spain, Jul 2016.

55. (Poster) “Microfluidic label-free monitoring of DNA hybridization,” SPIE Translational

Biophotonics, Houston TX, May 2016.

56. (Oral) “A label-free SERS sensing platform for telomerase activity detection,” SPIE Translational

Biophotonics, Houston TX, May 2016.

57. (Poster) “Monitoring adsorption of gold nanoparticles on electron-beam lithography patterned gold

nanodisks using dark-field hyperspectral microscopy,” SPIE Translational Biophotonics, Houston

TX, May 2016.

58. (Poster) “Plasmonic nanocomposite platform for biosensing application,” SPIE Translational

Biophotonics, Houston TX, May 2016.

59. (Poster) “Disposable lens for smartphone microscopy,” SPIE Translational Biophotonics, Houston

TX, May 2016.

60. (Poster) “Photothermal inactivation of heat-resistant bacteria on nanoporous gold disk arrays,” SPIE

Translational Biophotonics, Houston TX, May 2016.

61. (Poster) “Dual-wavelength line-scan Raman microscopy for label-free molecular imaging,” SPIE

Translational Biophotonics, Houston TX, May 2016.

62. (Poster) “Bio-inspired, low-cost plasmonic substrates for surface-enhanced Raman spectroscopy

(SERS),” SPIE Translational Biophotonics, Houston TX, May 2016.

63. (Poster) “A flexible and rapid frequency selective scheme for SRS microscopy,” SPIE Translational

Biophotonics, Houston TX, May 2016.

64. (Poster) “Fabrication of multi-point side-firing optical fiber by laser micromachining,” SPIE

Translational Biophotonics, Houston TX, May 2016.

65. (Oral) “Aryl bisthiolate functionalized plasmonic nanoporous discs: New direction for detecting

polycyclic aromatic hydrocarbons using surface-enhanced Raman spectroscopy” 251 st ACS National

Meeting, San Diego, CA, March 2016.

66. (Talk) "Raman and surface-enhanced Raman spectroscopy for renal condition monitoring", SPIE

Photonics West Feb 2016.

67. (Talk) "Plasmonic biosensor for label-free malachite green detection", SPIE Photonics West Feb

2016.

68. (Invited Talk) “Porous plasmonic nanostructures for bio applications”, IEEE NANOMED, Honolulu

HI, Nov 2015.

69. (Invited Talk) “Raman and surfaced-enhanced Raman spectroscopy for kidney disease diagnosis”,

IEEE NANOMED, Honolulu HI, Nov 2015.

70. (Invited Talk) “Light-based molecular sensing and imaging for translational biophotonics”, IEEE

NANOMED, Honolulu HI, Nov 2015.

71. (Talk) “Wavelength tunable plasmon enhanced photoluminescence from quantum dots”, IEEE

Optical MEMS and Nanophotonics (OMN) Jerusalem Israel, Aug 2015.

72. (Talk) “Modeling Nanoporous Gold Plasmonic Nanoparticles: Calculation of Optical Properties”,

IEEE NANO, Rome Italy, Jul 2015.

73. (Talk) “Monolithic nanoporous gold disks with large surface area and high-density plasmonic hot-

spots", in Plasmonics in Biology and Medicine XII, SPIE Photonics West Feb 2015.

74. (Talk) "Stamping SERS for creatinine sensing", in Plasmonics in Biology and Medicine XII, SPIE

Photonics West Feb 2015.

75. (Talk) "Label-free monitoring of individual DNA hybridization using SERS", in Nanoscale Imaging,

Sensing, and Actuation for Biomedical Applications XII, SPIE Photonics West Feb 2015.

76. (Talk) "Label-free, multiplexed, molecular sensing and imaging by stamping SERS", in Optical

Diagnostics and Sensing XV: Toward Point-of-Care Diagnostics, SPIE Photonics West Feb 2015.

77. (Talk) "Raman spectroscopy complements optical coherent tomography in tissue classification and

cancer detection", in Optical Biopsy XIII: Toward Real-Time Spectroscopic Imaging and Diagnosis,

SPIE Photonics West Feb 2015.

78. (Talk) "Monolithically integrated microfluidic nanoporous gold disk (NPGD) surface-enhanced

Raman scattering (SERS) sensor for rapid and label-free biomolecular detection", in Microfluidics,

BioMEMS, and Medical Microsystems XIII, SPIE Photonics West Feb 2015.

79. (Invited Talk) "Photothermal light harvesting and light-gated molecular release by nanoporous gold

disks", in Dynamics and Fluctuations in Biomedical Photonics XII, SPIE Photonics West Feb 2015.

80. (Talk) “Nanoporous gold nanoparticles for light harvesting and photothermal conversion,” ASME

International Design Congress, Buffalo NY, Aug. 2014.

81. (Invited Talk) “Hierarchical porous plasmonic Au nanostructures,”12 th International Conference on

Photonics and Imaging in Biology and Medicine (PIBM), Wuhan China, Jun. 2014 (invited).

82. (Poster) “Hyperspectral Raman imaging (HSRI) for multiplexed molecular imaging,” SPIE

Translational Biophotonics, Houston TX, May 2014.

83. (Poster) “Microfluidic label-free monitoring of DNA hybridization,” SPIE Translational

Biophotonics, Houston TX, May 2014.

84. (Poster) “Monolithic nanoporous gold disks with large specific surface area, tunable plasmon

resonance, and high-density, internal plasmonic hot-spots,” SPIE Translational Biophotonics,

Houston TX, May 2014.

85. (Poster) “Nanoporous gold disks for photothermal light harvesting and light-gated molecular release,”

86. (Poster) “Improvement of tissue analysis and classification using optical coherence tomography

combined with Raman spectroscopy,” SPIE Translational Biophotonics, Houston TX, May 2014.

87. (Poster) “Surface-enhanced Raman spectroscopy for label-free, multiplexed, molecular sensing and

imaging,” SPIE Translational Biophotonics, Houston TX, May 2014.

88. (Talk) “Integrated neural probe for localized light delivery and electrical recording,” SPIE Photonics

West, San Francisco CA, Jan. 2014.

89. (Talk) “Ultrasensitive DNA hybridization monitoring on nanoporous gold disks in microfluidics,”

SPIE Photonics West, San Francisco CA, Jan. 2014.

90. (Talk) “Hyperspectral Raman imaging (HSRI) by active-illumination for molecular imaging,” SPIE

Photonics West, San Francisco CA, Jan. 2014.

91. (Talk) “Label-free molecular sensing by SERS on nanoporous gold substrates,” SPIE Photonics West,

San Francisco CA, Jan. 2014.

92. (Talk) “Monolithic nanoporous gold as plasmonic substrates for surface studies,” ASME International

Design Congress, Portland OR, Aug. 2013.

93. (Talk) “Monolithic Nanoporous Gold Disks as Surface-Enhanced Raman Scattering Substrates,” OSA

Sensors, Rio Grande PR, Jul. 2013.

94. (Poster) “Scan-less hyperspectral raman imaging (HSRI) by active-illumination for sers-based

multiplexed molecular imaging,” ECI Advances in Optics for Biotechnology, Medicine and Surgery

XIII, Lake Tahoe, Jun 2013.

95. (Poster) ”Microfluidic label-free monitoring of DNA hybridization,” ECI Advances in Optics for

Biotechnology, Medicine and Surgery XIII, Lake Tahoe, Jun 2013.

96. (Poster) “Active-illumination parallel Raman/SERS imaging,” Electron, ion, and photon beam and

nanofabrication, Nashville TN, May 2013.

97. (Poster) “Surface-enhanced Raman Spectroscopy with monolithic, hierarchical nanoporous gold disk

substrates,” Electron, ion, and photon beam and nanofabrication, Nashville TN, May 2013.

98. (Talk) “Flexible optitrode for localized light delivery and electrical recording,” SPIE Photonics West,

San Francisco CA, Jan. 2013.

99. (Talk) ”Sparse-sampling parallel Raman/SERS microspectroscopy for high- throughput molecular

analysis of micro and nanoparticles,” SPIE Photonics West, San Francisco CA, Jan. 2013.

100. (Talk) “Monolithic porous gold nanostructures as surface-enhanced Raman spectroscopy

substrates for molecular and biosensing,” SPIE Photonics West, San Francisco CA, Jan. 2013.

101. (Talk) “Molecularly-specific sensing, imaging and stimulation,” Annual Symposium of Center of

NeuroEngineering, Rice University, Houston TX, Sept. 2012.

102. (Talk) “Parallel Raman and surface-enhanced Raman microspectroscopy,” Society of Applied

Spectroscopy Annual Meeting (FACSS/SCIX), Kansas City MO, Sept. 2012.

103. (Talk) “Monolithic nanoporous gold disks as surface-enhanced Raman scattering substrates,”

Society of Applied Spectroscopy Annual Meeting (FACSS/SCIX), Kansas City MO, Sept. 2012.

104. (Invited Talk) “Parallel Raman and surface-enhanced Raman microspectroscopy for

biophotonics applications,” International Conference and exhibition on Biosensor and Bioelectronics,

Las Vegas NV, May 2012.

105. (Invited Talk) “Flexible optitrode for localized light delivery and electrical recording,”

International Conference and exhibition on Biosensor and Bioelectronics, Las Vegas NV, May 2012.

106. (Invited Talk) “Detection of organic gunshot residues by surface-enhanced Raman scattering

spectroscopy,” PittCon, Orlando FL, Mar 2012.

107. (Poster) “3D HOT Raman,” PittCon, Orlando FL, Mar 2012.

108. (Talk) “Integrated multi-sensing optrode for neural stimulation and recording,” SPIE Photonics

West, San Francisco CA, Jan. 2012.

109. (Talk) “High-throughput Raman and surface-enhanced Raman microscopy,” SPIE Photonics

West, San Francisco CA, Jan. 2012.

110. (Poster) “Integrated multi-sensing optrode for neural stimulation and recording,” Society for

Neuroscience Annual Meeting, San Diego CA, Oct. 2011.

111. (Poster) “High throughput chemical imaging of living cells,” Advances in Optics for

Biotechnology, Medicine and Surgery, Engineering Conference International, Naples FL, Jun. 2011.

112. (Poster) "Oil spill sensor using multispectral infrared imaging via l1 minimization," International

Conferences on Acoustics, Speech and Signal Processing (ICASSP), Prague Czech Republic, May

2011.

113. (Talk) "A flexible optrode for deep brain neurophotonics," IEEE International Conference on

Neural Engineering, Cancun Mixico, Apr. 2011.

114. (Poster) "Fabrication of 3D multisensing electrodes for in vivo neuronal unit recordings", Society

for Neuroscience Annual Meeting, San Diego CA, Oct. 2010.

115. (Talk) “Offshore stand-off oil spill monitoring using passive optical imaging,” SPIE Symposium

on Defense, Security, and Sensing, Orlando, FL, Apr. 2009.

116. (Invited Talk) “Automated remote monitoring system for offshore platforms,” Schlumberger

Reservoir Symposium, Rio de Janeiro Brazil, Oct. 2008.

117. (Talk) ”Oil spill detection,” Federation of Analytical Chemistry and Spectroscopy Society

(FACSS), Reno NV, Sept. 2008.

118. (Talk) ”Oil spill detection using multiple spectral bands,” IEEE International Geoscience &

Remote Sensing Symposium (IGARSS), Boston MA, Jul. 2008.

119. (Talk) ”Modeling of thickness dependent thermal contrast of native and crude oil covered water

surfaces,” IEEE International Geoscience & Remote Sensing Symposium (IGARSS), Boston MA, Jul.

2008.

120. (Talk) “Quantitative Raman spectroscopy in turbid media: Theory and simulations,” Federation

of Analytical Chemistry and Spectroscopy Society (FACSS), Memphis TN, Oct. 2007.

121. (Poster) “Raman intensity correction in turbid media,” Gordon Research Conference: Laser in

Medicine and Biology, Holderness NH, Aug. 2006.

122. (Talk) “Intrinsic Raman spectroscopy improves analyte concentration measurements in turbid

media,” Biomedical Optics Topical Meeting by Optical Society of America, Fort Lauderdale FL, Mar.

2006.

123. (Poster) “Non-invasive determination of blood glucose concentration using NIR transcutaneous

Raman spectroscopy,” Advances in Optics for Biotechnology, Medicine and Surgery, Copper

Mountain CO, Aug. 2005.

124. (Poster) “Constrained regularization: A new strategy for accurate measurement of glucose

concentrations in human volunteers using transcutaneous Raman spectroscopy,” Federation of

Analytical Chemistry and Spectroscopy Society (FACSS), Quebec City Canada, Oct. 2005.

125. (Invited Talk) “Non-invasive blood analyte concentration measurements using Raman

spectroscopy and integrated microspectrometer by nano-actuation,” New England Section of the

Optical Society of America, Lexington, MA, Nov. 2004 (Invited).

126. (Invited Talk) “Microspectrometer without moving parts,” OSA Annual meeting, Orlando, FL,

Sept. 2002 (invited).

127. (Poster) “Analog tunable gratings with nanometer resolution,” Solid-state Sensor and Actuator

Workshop, Hilton Head SC, Jun. 2002.

128. (Invited Talk) “MEMS tunable gratings with analog actuation,” Symposium on photonics,

networking, and computing, Durham NC, Mar. 2002.

129. (Talk) “Electrostatic and piezoelectric analog tunable diffractive gratings,” Lasers and Electro-

Optics (CLEO), Long Beach CA, May 2002.

130. (Talk) “Analog tunable diffractive grating with milliradian resolution,” Optical Fiber

Communication Conference and Exhibit (OFC), Anaheim CA, Mar. 2002.