SANDEEP NEGI portrait
  • Adjunct Associate Professor, Elect & Computer Engineering
801-587-0640

Publications

  • Excimer laser deinsulation of Parylene-C on iridium for activated iridium oxide film coated Utah electrode array. Published, 02/28/2013.
  • “Morphology and electrochemical properties of activated and sputtered iridium oxide films for functional electrostimulation,” Journal of Sensor Technology, vol. 2(03), pp.138-147, 2012. Published, 09/26/2012.
  • “The use of a novel carbon nanotubes coated microelectrode array for chronic intracortical recording and micro-stimulation,” Proceedings of 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), San Diego, CA, Aug 28 - Sept 1, 2012. Published, 08/28/2012.
  • “A Novel Technique for increasing charge injection capacity of neural electrodes for efficacious and safe neural stimulation,” Proceedings of 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), San Diego, CA, Aug 28 - Sept 1, 2012. Published, 08/28/2012.
  • Silicon isotropic and anisotropic etching for MEMS application,” Microsystems Technologies. Published, 06/2012.
  • “Novel Isotropic and Anisotropic etching of MEMS Structures by Controlling the Dynamics of the Etchant”, Proceedings of the Transducers ’11, Beijing, China, June 5-9, 20011. Published, 06/05/2011.
  • “A Novel Surface Modification Method to Achieve Low Impedance Neural Microelectrode Arrays,” Proceedings of the Transducers ’11, Beijing, China, June 5-9, 20011. Published, 06/05/2011.
  • "A Wafer Scale Etching Technique for High Aspect Ratio Implantable MEMS Structures,” Sensors and Actuators A Phys. vol. 162(1), pp. 130-136, 2010. Published, 07/31/2010.
  • “Parylene-C based flexible interface for neuroprosthetic applications,” Proceedings of the 60th Electronic Components and Technology Conference (ECTC), Las Vegas NV, 1-4 June, 2010. Published, 06/01/2010.
  • “Multi Channel High Aspect Ratio Glass Microelectrode Array for Neuroprosthetic Applications,” Proceedings of the 60th Electronic Components and Technology Conference (ECTC), Las Vegas NV, 1-4 June, 2010. Published, 06/01/2010.
  • “In vitro comparison of sputtered iridium oxide and platinum coated neural implantable microelectrode arrays,” Biomedical Materials, vol.5, no. 1, 2010. Published, 02/03/2010.
  • "Neural Electrode Degradation from Continuous Electrical Stimulation: Comparison of Sputtered and Activated Iridium Oxide”, Journal of Neuroscience Methods, vol. 186, pp. 8-17, 2010. Published, 01/30/2010.
  • “Factors affecting degradation of sputtered iridium oxide used for neuroprosthetics applications,” Proceedings of the IEEE International Conference on Micro-Electro-Mechanical Systems (MEMS), Hong Kong, 24-28 Jan., 2010. Published, 01/24/2010.
  • “Wafer Scale Fabrication of Penetrating Neural Electrode Arrays” Biomedical Microdevices, vol. 12(5), pp. 797-807, 2010. Published, 01/10/2010.
  • "A Comparison of Fabrication Methods for Iridium Oxide Reference Electrodes,” The 8th IEEE Conference on Sensors, Christchurch, New Zealand, Oct. 25-28, 2009. Published, 10/25/2009.
  • “Wafer-scale Processed, Low Impedance Neural Arrays with Variable Length Microelectrodes,” Proceedings of Transducers ’09, Denver, USA, June 21-25, 2009. Published, 06/21/2009.
  • “Integrated wireless neural interface based on the Utah electrode array”, Biomed Microdevices. 2009 vol. 11, pp. 453-66. Published, 04/01/2009.
  • "Effect of sputtering pressure on pulsed-DC sputtered iridium oxide films for neuroprosthetic applications”, Sensors and Actuators B: Chemical, vol. 137(1), pp 370-378, 2009. Published, 03/28/2009.
  • “A Novel Masking Technique for High Aspect Ratio Penetrating Microelectrode Arrays,” Journal of Micromech. and Microeng., vol. 19, no. 3, 035004 (8pp), 2009 (Featured in IOP Select). Published, 01/30/2009.
  • "A Novel Method of Fabricating Convoluted Shaped Electrode Arrays for Neural and Retinal Prosthesis,” Sensor & Actuators A Phys, vol.145-146 (1-2), pp.123-130, 2008. Published, 08/31/2008.
  • “A Novel Method of Fabricating High Aspect Ratio Microneedles for Blood Sampling," Proceedings of the 58th Electronic Components and Technology Conference (ECTC), Florida, 27-30 May, 2008. Published, 05/27/2008.
  • “Self Aligning Latch-up Mechanism in Out of Plane Silicon Microelectrode Array for Neural Prostheses,” Proceedings of the 58th Electronic Components and Technology Conference (ECTC), Florida, 27-30 May, 2008. Published, 05/27/2008.
  • “Wafer Level Processing of Silicon Arrays for Implantable Medical Devices,” in Proceedings of the 57th Electronic Components and Technology Conference (ECTC), Reno, NV, May 29-June 1, 2007. Published, 06/2007.
  • “A Novel Method of Fabricating Convoluted Shaped Electrode Arrays for Neural and Retinal Prosthesis,” Proceedings of Transducers ’07, Lyon, France, June 10-14, 2007. Published, 06/2007.
  • “System integration of Utah Electrode Array using a Biocompatible Flip Chip Under Bump Metallization scheme,” SPIE : 14th International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, San Diego, CA, March 18-22, 2007. Published, 03/30/2007.

Research Keywords

  • Thin Films
  • Microfabrication
  • Bio-MEMS

Presentations

  • “Parylene-C Ribbon Cable for Pseudo-Floating Utah Electrode Array,” NIH Neural Interfaces Conference, Salt Lake City, UT, Jun 18-20, 2012. Conference Paper, Refereed, Presented, 06/2012.
  • “Engineering Neural Electrodes Surface for Improved Recording and Stimulation Characteristics,” NIH Neural Interfaces Conference, Salt Lake City, UT, Jun 18-20, 2012. Conference Paper, Refereed, Presented, 06/2012.
  • “Novel high aspect ratio penetrating glass microelectrode array for neuroprosthetic applications,” NIH Neural Interfaces Conference, Long Beach, CA, Jun 21-23, 2010. Conference Paper, Refereed, Presented, 06/2010.
  • “Symmetrical concave arrays for neuroprosthetics applications,” NIH Neural Interfaces Conference, Long Beach CA, Jun 21-23, 2010. Conference Paper, Refereed, Presented, 06/2010.
  • “In vitro comparison of activated and sputtered iridium oxide microlectrodes,” AVS 55th International Symposium and Exhibition, Boston, MA, Oct 19-24, 2008. Conference Paper, Refereed, Presented, 10/2008.
  • “Effect of sputtering pressure on the morphology, electrical and electrochemical properties of iridium oxide films,” NanoUtah 2008, Salt Lake City, Utah, Oct 16-17, 2008. (Best Poster). Conference Paper, Refereed, Presented, 10/2008.
  • “Effect of sputtering pressure on the charge storage capacity of iridium oxide,” NIH Neural Interfaces Conference, Cleveland, OH, Jun 16-18, 2008. Conference Paper, Refereed, Presented, 06/2008.
  • “Reliability Evaluation of a Biocompatible Flip Chip Under Bump Metallization Stack for Electrode Arrays used for Neuroprosthetics,” MRS Spring Meeting, San Francisco, CA, April 9-13, 2007. Conference Paper, Refereed, Presented, 04/2007.
  • “Characterization of reactively sputtered iridium oxide films for neural stimulation,” MRS spring meeting, San Francisco, CA, April 9-13, 2007. Conference Paper, Refereed, Presented, 04/2007.
  • "Thin Diaphragms for MEMS Applications", Indo-Japanese Workshop on Micro-System Technology, New Delhi, Nov. 23-25, 2000. Conference Paper, Refereed, Presented, 11/2000.

Research Groups

  • Moritz Leber, Graduate Student. ECE. 08/15/2014 - present.
  • Mobashir Shandhi, Graduate Student. ECE. 08/15/2014 - present.

Languages

  • English, fluent.
  • Hindi, fluent.

Geographical Regions of Interest

  • Australia and New Zealand
  • India
  • Northern America
  • Singapore
  • Western Europe