Referred Conference Publications – By Topic

Multiplexed Electrospray Devices

  • F. A. Hill, P. Ponce de Leon, and L. F. Velásquez-García, “High-Throughput Ionic Liquid Electrospray Sources Based on Dense Monolithic Arrays of Emitters with Integrated Extractor Grid and Carbon Nanotube Flow Control Structures”, Technical Digest of the 17th International Conference on Solid-State Sensors, Actuators, and Microsystems (Transducers 2013), Barcelona, Spain, pp. 2644 – 2647, June 16 – 20 2013.
  • P. Ponce de Leon, F. A. Hill, and L. F. Velásquez-García, “Batch-Microfabricated Arrays of Electrospinning Emitters for High Throughput Generation of Nanofibers”, Technical Digest 12th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS), Atlanta GA, USA, pp. 227 – 230, December 2-5, 2012
  • B. Gassend, L. F. Velásquez-García, A. I. Akinwande, and M. Martínez-Sánchez, “Fabrication of a Fully-Integrated Electrospray Array With Applications to Space Propulsion,” Technical Digest 21st IEEE International Conference on Micro Electro Mechanical Systems, Tucson AZ, USA, pp. 976 – 979, Jan. 2008.
  • B. Gassend, L. F. Velásquez-García, A. I. Akinwande and M. Martínez-Sánchez, “A Fully Integrated Microfabricated Externally Wetted Electrospray Thruster,” IEPC-2007-233, 30th International Electric Propulsion Conference, Florence, Italy, September 17-20, 2007.
  • B. Gassend, L. F. Velásquez-García, A. I. Akinwande, and M. Martínez–Sánchez, “A Fully Integrated Microfabricated Externally Wetted Electrospray Thruster,” AIAA-2007-5182, 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference,Cincinnati OH, USA, July 8-11, 2007.
  • L. F. Velásquez-García, A. I. Akinwande, M. Martínez–Sánchez, “Development an Characterization of a Micro-fabricated Linear Array of Electrospray Emitters intended for Space Thruster Applications,” Technical Digest of the 18th International Vacuum Nanoelectronics Conference, pp. 83 – 84, Oxford, UK, July 10 – 14, 2005.
  • L. F. Velásquez, A. I. Akinwande, M. Martínez–Sánchez, “The Development an Experimental Characterization of a Planar Array of Micro-fabricated Electrospray Emitters for Space Propulsion Applications,” Technical Digest of the 18th International Vacuum Nanoelectronics Conference, pp. 370 – 371, Oxford, UK, July 10 – 14, 2005.

Miniaturized Analytical Devices and Systems

  • E. V. Heubel and L. F. Velásquez-García, “Batch-Fabricated MEMS Retarding Potential Analyzer for High-Accuracy Ion Energy Measurements”, to be presented at the 26th IEEE International Conference on Micro Electro Mechanical Systems, Taipei, Taiwan, January 20 – 24, 2013.
  • E. V. Heubel, A. I. Akinwande, and L. F. Velásquez-García, “MEMS-Enabled Retarding Potential Analyzers for Hypersonic In-Flight Plasma Diagnostics”, Technical Digest of the 15th Solid-State Sensor, Actuator and Microsystems Workshop, pp. 324 – 327, Hilton Head Island SC, USA, June 3 – 7, 2012.
  • K. Cheung, L. F. Velásquez-García, and A. I. Akinwande, “High-Performance Square Electrode Quadrupole Mass Filters,”Technical Digest 23rd IEEE International Conference on Micro Electro Mechanical Systems MEMS 2010, Hong Kong, SAR, China, pp. 867 – 870, Jan. 24 – 28 2010.
  • K. Cheung, L. F. Velásquez-García, A. I. Akinwande, “Fully Batch-Fabricated Linear Quadrupole Mass Filters,” Technical Digest IEEE Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head Island SC, USA, pp. 316-319, 2008.
  • T. J. Hogan, S. Taylor, K. Cheung, L. F. Velásquez-García, A. I. Akinwande, “Simulation of a square electrode MEMS quadrupole mass filter operating in stability zones 1 and 3,” 56th ASMS Conference on Mass Spectrometry and Allied Topics, Denver CO, USA, June 1-5, 2008.
  • L. F. Velásquez-García and A. I. Akinwande “A PECVD CNT-Based Open Architecture Field Ionizer for Portable Mass Spectrometry,” Technical Digest 21st IEEE International Conference on Micro Electro Mechanical Systems, Tucson AZ, USA, pp. 742 – 745, Jan. 2008.
  • L. F. Velásquez-García, K. Cheung, and A. I. Akinwande, “Improvements on an Out-of-Plane MEMS Quadrupole for Portable Mass Spectrometry,” Technical Digest of the 20th International Vacuum Nanoelectronics Conference, Chicago IL, USA, July 8 – 12, 2007.
  • K. Cheung, L. F. Velásquez-García, and A. I. Akinwande, “First Principles Optimization of Mass Producible Microscaled Linear Quadrupoles for Operation in Higher Stability Regions,” Technical Digest of the 20th International Vacuum Nanoelectronics Conference, Chicago IL, USA, July 8 – 12, 2007.
  • L. F. Velásquez-García and A. I. Akinwande, “An Out-of-Plane MEMS Quadrupole for a Portable Mass Spectrometer,” Technical Digest of the 14th International Conference on Solid-State Sensors, Actuators and Microsystems, Vol. 2, pp 2315 – 2320, Lyon, France, June 10th – 14th, 2007.

Multiplexed Field Electron Devices

  • S. Cheng, F. A. Hill, E. V. Heubel, and L. F. Velásquez-García “A Compact X-ray Generator Using a Nanostructured Field Emission Cathode and aMicrostructured Transmission Anode”, 13th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS), London, UK, December 3-6, 2013, Journal of Physics: Conference Series Volume 476 (2013) 012016 doi:10.1088/1742-6596/476/1/012016
  • A. A. Fomani, A. I. Akinwande, and “Resilient, Nanostructured, High-Current, and Low-Voltage Neutralizers for Electric Propulsion of Small Spacecraft in Low Earth Orbit”, 13th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS), London, UK, December 3-6, 2013, Journal of Physics: Conference Series Volume 476 (2013) 012014 doi:10.1088/1742-6596/476/1/012014
  • M. Swanwick, P. D. Keathley, F. X. Kärtner, and L. F. Velásquez-García, “Nanostructured Silicon Photo-cathodes for X-ray Generation”, Technical Digest of the 26th International Vacuum Nanoelectronics Conference (IVNC 2013), Roanoke VA, July 8 – 12 2013.
  • R. Hobbs, Y. Yang, P.D. Keathley, W.S. Graves, F.X. Kaertner, M.E. Swanwick, L.F. Velásquez-García, and K. Berggren, “Optically Actuated Nanostructured Electron-emitter arrays”, Technical Digest of the 26th International Vacuum Nanoelectronics Conference (IVNC 2013), Roanoke VA, July 8 – 12 2013.
  • A. Fomani, L. F. Velásquez-García, and A. I. Akinwande, “A Low-voltage High-pressure Field Ionizer for Portable Analytical Instruments”, Technical Digest of the 26th International Vacuum Nanoelectronics Conference (IVNC 2013), Roanoke VA, July 8 – 12 2013.
  • M. Swanwick, P. D. Keathley, F. X. Kärtner, and L. F. Velásquez-García, “Ultrafast Photo-Triggered Field Emission Cathodes Using Massive, Uniform Arrays Of Nano-Sharp High-Aspect-Ratio Silicon Structures”, Technical Digest of the 17th International Conference on Solid-State Sensors, Actuators, and Microsystems (Transducers 2013), Barcelona, Spain, pp. 2680 – 2683, June 16 – 20 2013.
  • R. G. Hobbs, Y. Yang, P. D. Keathley, William S. Graves, F. X. Kärtner, K. K. Berggren, M. Swanwick, and L. F. Velásquez-García “Optically Actuated Nanostructured Electron-Emitter Arrays” to be presented to the 57th International Conference on Electron, Ion, and Photon Beam Technology and Nanofabrication, Nashville TN, May 28 – 31 2013.
  • P. D. Keathley, M. Swanwick, A. Sell, W. P. Putnam, S. Guerrera, L. F. Velásquez-García, and F. X. Kaertner, “Strong-Field Emission From High Aspect Ratio Si Emitter Arrays”, Technical Digest of the American Physicist Society, Baltimore MD, http://meetings.aps.org/link/BAPS.2013.MAR.G41.4, March 18 – 22, 2013.
  • P. D. Keathley, W. P. Putnam, A. Sell, S. Guerrera, L. F. Velásquez-García, and F. X. Kaertner, “Laser Induced Annealing Dynamics of Photo-Electron Spectra from Silicon Field Emitter Arrays”, Technical Digest of the Conference on Lasers and Electro-Optics – CLEO, San Jose, CA, May 6-11, 2012.
  • S. A. Guerrera, L. F. Velásquez-García, and A. I. Akinwande, “Scaling of High Aspect Ratio Current Limiters for the Individual Ballasting of Large Arrays of Field Emitters”, Technical Digest 24th International Vacuum Nanoelectronics Conference, Wuppertal, Germany, July 2011.
  • L. F. Velásquez-García, B. Gassend, and A. I. Akinwande, “CNT-Based Gas Ionizers with Integrated MEMS Gate for Portable Mass Spectrometry Applications,” Technical Digest of 15th International Conference on Solid-State Sensors, Actuators and Microsystems, Denver CO, USA, pp. 1646-1649, June 21 – 25, 2009.
  • L. F. Velásquez-García, Y. Niu, S. Guerrera, and A. I. Akinwande, “Advanced Cathodes for Novel Sub-mm Wave Compact Sources,” 34th Government Microcircuit Applications and Critical Technology Conference, Orlando FL, USA, March 16-19, 2009.
  • L. F. Velásquez-García and A. I. Akinwande, “A PECVD CNT-based open architecture field ionizer for portable mass spectrometry”, Tech. Digest IEEE 21st International Conference on MEMS, pp. 742 – 745, 2008.
  • L. F. Velásquez-García, B. Adeoti, Y. Niu and A. I. Akinwande, “Uniform High Current Field Emission of Electrons from Si and CNF FEAs Individually Controlled by Si Pillar Ungated FETs,” Technical Digest IEEE International Electron Device Meeting,Washington DC, USA, pp. 599 – 602, Dec. 2007.
  • L-Y. Chen, L. F. Velasquez-Garcia, X. Wang, K. Teo and A. I. Akinwande, “A Micro Ionizer for Portable Mass Spectrometers using Double-gated Isolated Vertically Aligned Carbon Nanofiber Arrays,” Technical Digest IEEE International Electron Device Meeting, Washington DC, USA, pp. 843 – 846, Dec. 2007.
  • L. F. Velásquez-García and A. I. Akinwande “A MEMS CNT-Based Neutralizer for Micro-propulsion Applications,” IEPC-2007-253, 30th International Electric Propulsion Conference, Florence, Italy, September 17-20, 2007.
  • L. F. Velásquez-García and A. I. Akinwande, “The Development of a Micro-Fabricated CNT-Based Neutralizer for Micro-Propulsion Applications” AIAA-2007-5255, 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit,Cincinnati OH, USA July 8-11, 2007.
  • L.-Y. Chen, L. F. Velásquez-García, X. Wang, K. Cheung, K. Teo, and A. I. Akinwande, “Design, Fabrication and Characterization of Double-Gated Vertically Aligned Carbon Nanofiber Field Emitter Arrays,” Technical Digest of the 20th International Vacuum Nanoelectronics Conference, Chicago IL, USA, July 8 – 12, 2007.

Multiplexed Chemical Reactors

  • F. Eid, L. F. Velásquez-García, and C. Livermore, “Design, Fabrication, and Demonstration of a MEMS Steam Generator for Ejector Pump Applications,” Technical Digest 9th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS), Washington DC, USA, pp. 41 – 44, December 1-4, 2009. Paper won the Best Student Oral Presentation Award.
  • L. F. Velásquez-García, T. F. Hill, B. A. Wilhite, K. F. Jensen, A. H. Epstein, and C. Livermore, “A MEMS Singlet Oxygen Generator for a MEMS Chemical Oxygen Iodine Laser,” Technical Digest of the 6th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, pp. 117 – 120, Berkeley CA, USA, November 29th – December 1st 2006.
  • T. F. Hill, L. F. Velásquez-García, B. A. Wilhite, A. H. Epstein, K. F. Jensen, and C. Livermore, “A MEMS Singlet Oxygen Generator,” Technical Digest of the Solid-State Sensor, Actuator and Microsystems Workshop, pp 114 – 119, Hilton Head Island SC, USA, June 4 – 8, 2006.

HV MEMS Packaging for Multiplexed Systems

  • B. Gassend, L. F. Velásquez-García, A. I. Akinwande, M. Martínez–Sánchez, “Mechanical Assembly of Electrospray Thruster Grid,” IEPC 2005-101, 29th International Electric Propulsion Conference, Princeton NJ, USA, October 31 – November 4, 2005.