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Publications

PUBLICATIONs Neural Engineering and Nano Electronics Laboratory

  • Book Chapter
  1. L. Chen, J. Xie, H. Yoon, M. Srivatsan, R. Harbaugh, V. Varadan, Biohybrid Systems: Nerves, Interfaces and Machines (Chapter 6 Biohybrid Circuits: Nanotransducers Linking Cells and Neural Electrodes), Wiley.
  • Journal Publications 
  1. Arastu Sharma, Sehyun Lee, Hoonseo Kim, Hargsoon Yoon, Shinwon Ha and Sung Ung Kang, “Molecular Crosstalk Between Circadian Rhythmicity and the Development of Neurodegenerative Disorders” Front. Neurosci. 14. 844 (2020)
  2. Abdullah Al Mamun, Tanzil Tasnim Ava, Tarek M. Abdel-Fattah, Hyeon Jun Jeong, Mun Seok Jeong, SeonhyeHan, Hargsoon Yoon, Gon Namkoong, “Effect of Hot-casted NiO Hole Transport Layer on the Performance of Perovskite Solar Cells Solar Energy,” Solar Energy, 188, 609-618, (2019).
  3. Min H. Kim, Hargsoon Yoon*, Sang H. Choi, Zhio Fei, Jongsung Kim, Kyo D. Song and Uhn Lee, “Miniaturized and Wireless Optical Neurotransmitter Sensor for Real-Time Monitoring of Dopamine in the Brain,” Sensors, 6(11), E1894 (2016).
  4. Michael Polanco, Sebastian Bawab, Hargsoon Yoon*, “Computational assessment of neural probe and brain tissue interface under transient motion,” Biosensors, 6, 27 (2016).
  5. Michael Polanco, Hargsoon Yoon*, Sebastian Bawab, “Micromotion-induced dynamic effects from a neural probe and brain tissue interface” J. Micro/Nanolith. MEMS MOEMS., 13(2), 023009 (2014).
  6. R. Zhu, G.L. Huang, H. Yoon*, C.S. Smith, V.K. Varadan, “Biomechanical strain analysis at the interface of brain and nanowire electrodes on a neural probe”, J. Nanotech. Eng. Med., 2, 031001 (2011).
  7. H. Yoon*, P. Hankins, S. Oh, R. E. Haubaugh, V. K. Varadan,  “Heterostructured IrO2/Au nanowire electrodes and unit recordings from hippocampal rat brain” J. Nanotech. Engineering Medicine, 1(2), 021006 (2010).
  8. H. Yoon*, D. C. Deshpande, V. K. Varadan, T. Kim, E. Jeong, and R. E. Harbaugh, “Development of titanium needle probes for neural recording” J. Nanotech. Engineering Medicine, 1(1), 011004 (2010).
  9. T. C. Le, H. Yoon*, L. Chen, R. McCann, V. K. Varadan, “Fabrication of giant magneto resistance sensing devices with vertically grown Co/Cu nanowires on a substrate,” J. Micro/Nanolitho., MEMS, MOEMS, 8, 043055 (2009).
  10. R. Dubey, T.C. Shami, K.U. Bhasker Rao, H. Yoon*, and V.K. Varadan, “Synthesis of polyamide microcapsules and effect of critical point drying on physical aspect,” Smart Mater. Struct, 18, 025021 (2009).
  11. H. Yoon*, P. Hankins, V.K. Varadan, and R. E. Harbaugh, “Dual electrode ensembles with core and shell nanoelectrodes for dopamine sensing applications,” Electroanalysis, 20, 1147 (2008).
  12. J. K. Abraham, H. Yoon, R. Reddy, M. Kavdia, and V.K. Varadan, “Design and development of nanowire integrated microelectrode arrays for lab-on-a-chip devices,” IET Nanobiotechnology, 2, 55 (2008).
  13. D.C. Deshpande, H. Yoon*, A. M. Khaing, and V.K. Varadan, “Development of a Nanoscale heterostructured glucose sensor using modified microfabrication processes,” J. Micro/Nanolitho. MEMS. MOEMS, 7, 023005 (2008).
  14. H. Yoon*, D. C. Deshpande, V. Ramachandran, and V. K. Varadan, “Aligned nanowire growth using lithography-assisted bonding of polycarbonate template for neural probe electrodes,” Nanotechnology, 19, 025304 (2007).
  15. H. Yoon*, J. Xie, J. K. Abraham, V. K. Varadan, and P. B. Ruffin, “Passive wireless sensors using electrical transition of carbon nanotube junctions in polymer matrix,” Smart Mater. Struct., 15, s14 (2006).
  16. T. Ji, H. Yoon, J. K. Abraham, and V. K. Varadan, “Ku-band antenna array feed distribution network with ferroelectric phase shifters on silicon,” IEEE Trans. Microw. Theo. Tech, 54, 1131 (2006).
  17. T. Ji, H. Yoon, J. K. Abraham, and V. K. Varadan, “Design of a Ku-band wilkinson power divider on surface-stabilized high-resistivity Si substrates,” Microw. Opt. Lett., 44, 436 (2005).
  18. H. Yoon, V. K. Varadan, “Design and performance of bilateral interdigital CPW phase shifter for RF communication applications,” J. Microlitho. Microfab. Microsys., 3, 459 (2004).
  19. H. Yoon, J. K. Abraham and V. K. Varadan, “Design and experimental results of bilateral interdigital coplanar delay line for MMIC,” Microw. Opt. Lett., 40, 127 (2004).
  20. H. Yoon, K. J. Vinoy and V. K. Varadan, “Design and development of micromachined bilateral interdigital coplanar waveguide RF phase shifter compatible with LDMOS voltage controller on Silicon,” Smart Mater. Struct., 12, 769 (2003).
  21. V.K. Varadan, K.J. Vinoy, H. Yoon, K.A. Jose, and V.V. Varadan, “Application of MEMS in microwave and millimeter wave systems,” J. Wave-Material Interaction, 15, 101 (2000)
  • Selected Conference Proceeding and Presentation
  1. Nived Mukundan, Aslam Khan, Charles Owusu-Ansah, Hargsoon Yoon, Fast functional imaging of neural networks with nanoelectrode arrays, Society for Neuroscience, Chicago, IL (2019)
  2. Seonhye Han, Jisuk Kang, JunHyun Kim, Myung Yung Jeong, Hargsoon Yoon, "Investigation of electrochemical and mechanical coupling effects of micromotion in neural sensing", Proceedings of SPIE Vol. 10969, 1096908 (2019)
  3. Sunanda Roy, Swarup Roy, Ruth Mwongeli Muthoka, Hyun Chan Kim, Hargsoon Yoon, Jaehwan Kim, "Polydopamine-nanocellulose nanocomposites: physical and electrical properties for biomedical electrodes", Proceedings of SPIE Vol. 10969, 1096905 (2019)
  4. Nived Mukundan, Aslam Khan, Lochan Pai, Hargsoon Yoon, "Rechargeable power management system using active balancing for biomedical devices", Proceedings of SPIE Vol. 10969, 1096914 (2019)
  5. Hargsoon Yoon, Anton Shimkevitch, Lochan Pai, Seonhye Han, Min Hyuck Kim, “Novel implantable nanoelectrodes for use in brain imaging with electrical impedance tomography,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, Denver, CO, (2019)
  6. Shao-Hui Chuang, Larry D. Sanford, Richard A. Britten, Hargsoon Yoon, “Neural recordings and machine learning techniques for the analysis of brain function and impact from stressors associated with space exploration,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, Denver, CO, (2019)
  7. Younghan E. Jung, Yaohang Li, Kevin Han, Edgar Lobaton, Hargsoon Yoon, “A feasibility study of multimodal sensing and machine learning techniques to monitor construction workers’ mental and physical states and predict unsafe actions,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, Denver, CO, (2019)
  8. Gi-Woo Kim, Sun-Woo Kang, Hargsoon Yoon, “Development of G-Fresnel lens-based µ-spectrometer,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, Denver, CO, (2019)
  9. Min Hyuck Kim, Anton Shimkevitch, Seonhye Han, Hargsoon Yoon, “Development of nanoelectrodes array using iridium oxide/gold nanowires for fast imaging of neural network,” Society for Neuroscience, San Diego, CA, (2018).
  10. Min Hyuck Kim, Anton Shimkevitch, Seonhye Han and Hargsoon Yoon, “Iridium Oxide/Gold Nanowire Electrodes for Fast Imaging of Neural Network,” Neural Interface Conference, Minneapolis, MN, (2018).
  11. Seonhye Han, Min Hyuck Kim, Montrey Freeman, Mamadou Mbaye, Laurie L Wellman, Amy M. Sutton, Larry D. Sanford, Hargsoon Yoon, “3D Printed Lightweight Microdrive for Chronic Neural Recordings in Freely Moving Rats,” Neural Interface Conference, Mineapolis, MN, (2018).
  12. Laurie L. Wellman, Amie M. Sutton, Min H. Kim, Obadiah K. Koech, Marlene E. Fitzpatrick, Brook L. Williams, Mayumi Machida, Hargsoon Yoon, Gyorge Lonart, Larry D. Sanford, “Optogenetic simulation and inhibition of the central nucleus of the amygdala alters firing in locus coruleus neurons,” Sleep, 40(sup.1), A51 (2017).
  13. M.H. Kim, M. Freeman, A. Shimkevitch, H. Yoon* “Long Term Stability of Iridium Oxide Nano-Electrodes for Chronic Stimulation and Functional Neural Imaging,” Cell Symposia: Big Questions in Neuroscience, Arlington, VA, Nov. 2017.
  14. Seonhye Han, Michael Polanco, Sebastian Bawab, Hargsoon Yoon* “Multiphysics numerical study of electrochemical neurotransmitter sensing under mechanical motion,” Cell Symposia: Big Questions in Neuroscience, Arlington, VA, Nov. 2017.
  15. Seonhye Han, Min Hyuck Kim, Montrey    Freeman, Obadiah Koech, Guy Jackson, Hargsoon Yoon, “Dopamine Sensor with Gold Nanowires for In-Vitro Study of Dopaminergic Neurons,” 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jeju, South Korea, July 2017.
  16. Seonhye Han, Michael Polanco, Sebastian Bawab, Hargsoon Yoon* “Multiphysics Simulation of Cyclic Voltammetry Neurotransmitter Sensing under Mechanical Motion,” 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jeju, South Korea, July 2017.
  17. Min H Kim, Seonhye Han, Montrey D. Freeman, Obadiah K. Koech and Hargsoon Yoon, “Highly Reliable Iridium Oxide Electrodes for Electrical Impedance Tomography Imaging of Fast Neural Activity in the Brain” Electrical Impedance Tomography Conference, Hanover, NH, June 2017
  18. Hargsoon Yoon, “Sensing and Functional Imaging of Dynamic and Networked Neural Activity in the Brain”, 10th EAI International Conference on Bio-inspired Information and Communications Technologies, March 2017, Invited Talk.
  19. Deidra Walls, Sang H. Choi, Hargsoon Yoon, Demetris Geddis, Kyo D. Song, “How coupling affects closely packed rectenna arrays used for wireless power transmission,” Proc. SPIE 10167, Nanosensors, Biosensors, Info-Tech Sensors and 3D Systems`, 101670R (2017)
  20. Hargsoon Yoon, Min H. Kim, “Nano Electrode Array for Electrical Impedance Tomography of Neural Network Activity,” Society for Neuroscience, San Diego, CA, Nov. 15, 2016.
  21. Min H. Kim, Obadiah K. Koech, Amy M. Demick, Laurie L. Wellman, Larry D. Sanford, Hargsoon Yoon, “3D Printed Microdrive for Chronic Neural Recording and Optogenetic Stimulation in the Rat Brain,” A Joint Meeting of NANS and Neural Interface Conference, Baltimore, MD, June 28, 2016.
  22. Min H. Kim, Obadiah K. Koech, Hargsoon Yoon, Development of Nano Electrode Array for Functional Imaging of Neural Network Using Electrical Impedance Tomography, A Joint Meeting of NANS and Neural Interface Conference, Baltimore, MD, June 28, 2016.
  23. Hargsoon Yoon, Min H. Kim, Darryl Scott, Depth electrode for neural electrical impedance tomography, ICEBI & EIT Stockholm, Sweden, June 19-23, 2016.
  24. Min H. Kim, Obadiah K. Koech, Guy Jackson, Hargsoon Yoon, Electrical and Optical Neurotransmitter Sensing Devices and Systems for Chronic Real Time Recording in the Rat Brain, CINP World Congress, Seoul, Korea, July 5, 2016.
  25. Min H. Kim, Hargsoon Yoon, Kyo D. Song, Sang H. Choi, Uhn Lee, Jongsung Kim, Development of a miniaturized optical neurotransmitter sensing system for realtime monitoring of neural activity, SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 9802-42 (2016)
  26. John Day, Hargsoon Yoon, Jaehwan Kim, Sang H. Choi,  Kyo D. Song, Simulation study of a high power density rectenna array for biomedical implantable devices, SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 980243 (2016)
  27. Min H. Kim, Laurie L. Wellman, Hyunjeong Liew, Larry D. Sanford, Hargsoon Yoon, Mechanically stiff carbon fiber electrodes for chronic dopamine sensing in the rat brain, SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 9802-45 (2016)
  28. Hargsoon Yoon, Min Kim, Depth electrode array for monitoring and imaging of fast neural activity and functional network in the brain, SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 980247 (2016)
  29. Min H. Kim, Obadiah K. Koech, Amy M. Demick, Laurie L. Wellman, Larry D. Sanford, Hargsoon Yoon, Optrode and 3D Printed Microdrive for Optogenetic Stimulation and Neural Recording in the Rat Brain Across Sleep-Wake States, CINP World Congress, Seoul, Korea, July 5, 2016.
  30. Sang H. Choi; Min Hyuck Kim; Kyo D. Song; Hargsoon Yoon; Uhn Lee, “A wirelessly powered microspectrometer for neural probe-pin device,” Proc. SPIE Micro+Nano Materials, Devices, and Systems, 9668, 96683Z (2015).
  31. Darryl Scott, Min H. Kim, Hargsoon Yoon, “Neural probe array for fast neural imaging of group cellular events using electrical impedance tomography” Cell Symposia: Engineering the Brain, Chicago, IL (Oct. 2015).
  32. Min Hyuck Kim; Kyo D. Song; Hargsoon Yoon; Yeonjoon Park; Sang H. Choi; Dae-Sung Lee; Kyu-Sik Shin; Hak-In Hwang; Uhn Lee, “Probe-pin device for optical neurotransmitter sensing in the brain,” Proc. SPIE, Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 9434, 943409 (2015).
  33. Min Hyuck Kim; Ilho Nam; Youngki Ryu; Laurie W. Wellman; Larry D. Sanford; Hargsoon Yoon, “Miniaturized neural sensing and optogenetic stimulation system for behavioral studies in the rat,” Proc. SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 9434,94340B (2015).
  34. Demetris Geddis; Jaehwan Kim; Sang H. Choi; Hargsoon Yoon; Kyo D. Song, “Review of radio wave for power transmission in medical applications with safety,” Proc. SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems. 9434, 94340T (2015).
  35. Larry D. Sanford,  Min Hyuck Kim, Laurie L. Wellman, Hargsoon Yoon, “ Real-time Sensing of Glutamate in the Basolateral Amygdala (BLA) in the Rat Brain across Sleep-wake States”, Society for Neuroscience Conf., Washington, DC (Nov. 2014).
  36. Darryl W. Scott, Anish K. Kodeboyina, Min Hyuck Kim, Hargsoon Yoon, “Development of Nano-Electrode Array for Functional Electrical Impedance Tomography in the Brain” HRNN Conf., Norfolk, VA (Oct. 2014).
  37. Nakyia Hinton, Anish K. Kodeboyina, Min H. Kim, Hargsoon Yoon, “Investigation of Hemodynamic Response on Occipital Lobe to Detect Distracted Driving” HRNN Conf. Norfolk, VA (Oct. 2014).
  38. Michael Polanco, Hargsoon Yoon, Sebastian Bawab, “Finite Element Analysis for Time-Dependent Dynamic Effects from a Neural Probe and Brain Tissue Interface,” Neural Interface Conference, Dallas, TX (June 2014).
  39. Min H. Kim, Darryl W. Scott, Alonzo Jenkins, Nakyia Hinton, Hargsoon Yoon, Laurie L. Wellman, Larry D. Sanford, “Amperometric Sensing of Glutamate in the Basolateral Amygdala (BLA) and Neuro-Potential Recordings across Sleep-wake States,”  Neural Interface Conference, Dallas, TX (June 2014).
  40. Camille Cooper; Keisharra Eldridge; Min Hyuck Kim; Hargsoon Yoon; Sang H. Choi; Kyo D. Song, “Parylene-C passivation and effects on rectennas' wireless power transfer performance,” Proc. SPIE, Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 9060, 90601A (2014).
  41. Min H. Kim, Young Kee Ryu, Hargsoon Yoon, Ilho Nam, Darryl W. Scott, Larry D. Sanford, “A dual-function electronic module for chronic neural sensing and optogenetic stimulation,” SPIE 2014 Nano-, Bio-, Info-Tech Sensors and Systems, San Diego, CA (2014).
  42. Hargsoon Yoon, Min H. Kim, Hyunjung Kim, Kyo D. Song, Laurie L. Wellman, Larry D. Sanford, Hae S. Kim, Sang H. Choi, “Development of an electrical and optical neural probe for neurotransmitter sensing in the brain,” SPIE 2014 Nano-, Bio-, Info-Tech Sensors and Systems, San Diego, CA (2014).
  43. Darryl W. Scott, Min H. Kim, Camille Cooper, Hargsoon Yoon, “Nano-electrode array for in-vivo action potential recording in the brain,” SPIE 2014 Nano-, Bio-, Info-Tech Sensors and Systems, San Diego, CA (2014).
  44. Min H. Kim, Hargsoon Yoon, “Development of a flexible supercapacitor using iridium oxide nanowire and active carbon electrodes,” SPIE 2014 Nano-, Bio-, Info-Tech Sensors and Systems, San Diego, CA (2014).
  45. Min Hyuck Kim, Hargsoon Yoon, Laurie L. Wellman, Larry D. Sanford, “In-vivo sensing of glutamate levels in the basolateral amygdala across sleep-wake states,” Proc. IEEE Sensors 348 (2013).
  46. Courtney S. Smith, Darryl W. Scott, Min H. Kim, Larry D. Sanford, Kyo D. Song, Hargsoon Yoon, “Polyimide neural probe for chronic sensing of neural activity and micro-positioning,” SPIE Proceedings Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 8691, 86910N (2013).
  47. Michael Polanco, Hargsoon Yoon, Sebastian Bawab, “Micromotion-induced dynamic effects from a neuron probe and brain tissue interface,” SPIE Proceedings Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 8691, 869109 (2013).
  48. H. Yoon, “Nanotechnology: Development of devices and electrodes,” International Bioelectrics Workshop (2012).
  49. Hargsoon Yoon, Kyo D. Song, Uhn Lee M.D., Sang H. Choi, “Microwave thermal radiation effects on skin tissues,” SPIE Proceedings Nanosystems in Engineering and Medicine, 8548, 85482R (2012).
  50. M. Polanco, H. Yoon, K. Lee, S. Bawab, “Predicting brain tissue deformation around an implantable electrode due to dynamic micromotion,” SPIE Proceedings Nanosystems in Engineering and Medicine, 8344, 83441l (2012).
  51. K.D. Song, H. Yoon, U. Lee, S.H. Choi, “Thermal effects of X-band microwaves on skin tissues,” SPIE Proc. Nanosystems in Engineering and Medicine, 8344, 834418 (2012)
  52. Y. Park, H. Yoon, U. Lee, G.C. King, S. Choi, “Mathematical simulation for integrated linear Fresnel spectrometer chip,” SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 8344, 83440D (2012).
  53. H. Yoon, H. Kim, S.H. Choi, L.D. Sanford, D. Geddis, K. Lee, J. Kim, K.D. Song, “Wireless power using magnetic resonance coupling for neural sensing applications,” SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 8344, 83440S (2012).
  54. Sang Y. Yang; Kyo D. Song; Hargsoon Yoon; Jaehwan Kim, “Investigation of coplanar strip dipole rectenna elements for microwave power transmission: simulation and experiment,” SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 8344, 83441H (2012).
  55. C. S. Smith, C. M. Bowie, K. D. Song, V. K. Varadan, W.  Kim, and H. Yoon*, Electrochemical Investigation of nano-electrodes for biomedical sensing applications in the brain,“ Proceedings of SPIE, 7980, 798011 (2011).
  56. C. Smith, K.D. Song, H. Yoon, W. Kim, T. Zeng, L.D. Sanford, “Development and investigation of flexible polymer neural probe for chronic neural recording ,” SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 8344, 834404 (2012).
  57. H. Yoon, K. D. Song, K. Lee, J. Kim, and S. H. Choi, “Near field effects of millimeter-wave power transmission for medical applications,” SPIE Proc. Nano-, Bio-, Info-Tech Sensors and Systems, 7980, 798012 (2011).
  58. H. Yoon*, C. Smith, C. Bowie, and K. Song, “Neural Electrodes with Sensing Core and Shielding Grid Nano-Structures for Chronic Neural,” UKC 2010 Symposium, Seatle WA (Aug. 2010).
  59. C. Smith, K. Song, and H. Yoon*, “Design and Development of Heterostructured Nanoelectrodes to Shield Cell Adsorptions and Enhance Chronic Neural Recording,” Neural Interface Conference, Long Beach CA (June 2010).
  60. H. Yoon, F. Williams, K. D. Song, S. Y. Yang, J. Kim; K. Lee; S. H. Choi, “Rectennas performance based on substrates for bio-medical applications,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, San Diego CA (Mar. 2010)
  61. C. Smith, K. Song, and H. Yoon*, Development of Wireless Neural Probing System for Simultaneous Dopamine and Neural Impulse Sensing in Addictive Behaviors,” Society for Research on Nicotine and Tabacco, Baltimore MD, (Feb. 2010).
  62. H. Yoon, P. Hankins, S. Oh, V. K. Varadan, C. Brantley, E. Edwards, P. B. Ruffin, Y. M. Kwon, “Nanowire gas sensors and wireless sensing network for electronic-nose development,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, San Diego CA (Mar. 2010).
  63. S. Oh, H. Kwon; H. Yoon; V. K. Varadan “Application of wireless sensor system on security network,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, San Diego CA (Mar. 2010).
  64. H. Kwon, S. Oh, H. Yoon, and V. K. Varadan, “Software structure for broadband wireless sensor network system,” SPIE Nanosensors, Biosensors, and Info-Tech Sensors and Systems, San Diego CA (Mar. 2010).  
  65. H. Yoon, P. T. Hankins, V. K. Varadan, “Neural Sensing and Stimulation with IrO2/Au Nanowires and Nanocavity Ensemble,” World Cong. Int. Neuromod. Soc. (2009). 
  66. H. Yoon, D. C. Deshpande, V. Ramachandran, P. T. Hankins, V. K. Varadan, “Nanodevices for biosensing applications,” SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 7291, 729109 (2009).
  67. V. Ramachandran, H. Yoon, V. K. Varadan, “Design and fabrication of nanowire electrodes on a flexible substrate for detection of myocardial ischemia,” SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 7291, 729109 (2009).
  68. S. Oh, H. Kwon, L. Kegley, H. Yoon, V. K. Varadan, “Wireless nanosensor network system”, SPIE Proc. Nanosensors, Biosensors, and Info-Tech Sensors and Systems, 7291, 729111 (2009).
  69. V. Ramachandran, H. Yoon, and V. K. Varadan, “Development of potassium ion sensors using polypyrrole electrodes on a polyimide substrate,” SPIE Proc. Nanosensors, Microsensors, and Biosensors and Systems, 6931, 69310H (2008).
  70. H. Yoon, V. Ramachandran, D. C. Deshpande, and V. K. Varadan, “Bio-inspired electric cilia development for biomedical applications: use of ionic electro active polymer, nanowire arrays, and micro-stereo-lithography” SPIE Proc. Nanosensors, Microsensors, and Biosensors and Systems, 6528, 652804 (2007).
  71. P. T. Hankins, H. Yoon, and V. K. Varadan, “Cylindrical nanocavity and nanowire electrodes for redox cycle dopamine sensing: design, fabrication, and characterization,” SPIE Proc. Nanosensors, Microsensors, and Biosensors and Systems, 6528, 65281J (2007).
  72. D. C. Deshpande, H. Yoon, A. M. Khaing and V. K. Varadan, “Development of amperometric glucose sensors with heterostructured nanowire arrays for continuous subcutaneous monitoring,” SPIE Proc. Nanosensors, Microsensors, and Biosensors and Systems, 6528, 652819 (2007).
  73. J. K. Abraham, R. Chintakuntla, H. Yoon and V. K. Varadan, “Nanowire integrated microelectrode arrays for Lab-on-a-Chip applications,” SPIE Proc. Nanosensors, Microsensors, and Biosensors and Systems, 6528, 65280O (2007).
  74. J. K. Abraham, H. Yoon and V. K. Varadan, “Nanowire integrated microelectrode arrays for neuroelectronic applications,” IEEE Regional conference, 20, 185 (2007).
  75. H. Yoon, D. Devesh, V. K. Varadan, “Enzyme electrodes immobilized on hetero-structured metallic nanowire array for glucose sensing,” SPIE Proc. Biomedical Applications of Micro- and Nanoengineering, 6416, 641608 (2006).
  76. H. Yoon, R. R. Chintakuntla, V. K. Varadan, P. B. Ruffin, “Aligned nanowire structures on silicon and flexible substrates and their applications,” SPIE Proc. Smart Electronics, MEMS, BioMEMS, and Nanotechnology, 6127, 128 (2006).
  77. H. Yoon, B. Philip, J. K. Abraham, T. Ji, and V. K. Varadan, “Nanowire sensor array for wireless detection and identification of bio-hazards,” SPIE Proc. Smart Electronics, MEMS, BioMEMS, and Nanotechnology, 5763, 326 (2005).
  78. H. Yoon, T. Ji, and V. K. Varadan, “Design and development of 3-bit polymer MEMS phase shifters,” SPIE Proc. Smart Electronics, MEMS, BioMEMS, and Nanotechnology, 5763, 61 (2005).
  79. T. Ji , H. Yoon, J. K. Abraham, and V. K. Varadan, “Wilkinson power divider for antenna distribution networks,” Proc. of SPIE, 5763, 55 (2005)