Kent Pfeifer

Microwave and Sensor Engineer

Author profile picture

Microwave and Sensor Engineer

kbpfeif@sandia.gov

Sandia National Laboratories, New Mexico
 P.O. Box 5800
 Albuquerque, NM 87185-1425

Biography

Kent Pfeifer’s research interests include high-performance radiation and explosives detection, electrostatic discharge mechanisms and mitigation, surface plasmon resonance sensors, acoustic-based sensors, ion mobility spectroscopy, and holographic correlation spectroscopy. Contributions to each of these fields center around miniaturization, performance enhancement, and development of robust, field-grade systems for high-consequence applications.

Education

Bachelor’s Degree: Physics, University of Southern Colorado (1981-1985)

Master’s Degree: Electrical Engineering (MSEE) in Optical Electronics, University of New Mexico (1986-1991)

Pfeifer’s master’s thesis was titled “In Situ Monitoring of Thin Film Deposition using Optical Fibers” which explored the viability of using optical fibers to actively monitor the optical properties and optical thicknesses of thin films being deposited on substrates. This approach employed an active reflectivity monitoring system that could detect changes in reflection at levels of 1 part in 10000.  Active monitoring of the reflection allows extremely accurate manufacture of multi-layer thin film optical coatings for optical and semiconductor applications. 

Research Interests

High-Performance Miniaturized Ion Mobility Sensors

Development of high-performance miniaturized ion mobility sensors (IMS) for application in first-responder scenarios has been a priority in Pfeifer’s research. These systems are based on high-performance IMS tubes manufactured using innovative 3-D low-temperature co-fire (LTCC) technologies to make light-weight, easily manufacturable, and chemically inert systems.  These systems are fabricated using lithographic processes and modern surface mount electronics technologies to achieve high-density electrodes that maintain uniformity of the electric field gradient across larger fractions of the cross-section than conventional tubes.  Thus, higher ion capture and transport efficiencies are achieved. In addition, novel operational modes based on radar-inspired pulse compression techniques have been demonstrated and refined that increase the effective resolution of the tubes to levels beyond even the largest conventional tubes.

Optical-Fiber Based Surface Plasmon Resonance Sensors

Development of optical-fiber based surface plasmon resonance sensors for application in high-electric field environments or electronic exclusion zones has been another area of interest.  Multi-layer coating of optical fibers allows spectroscopic measurement of the surface plasmon resonance as a function of concentration.  This research has involved modeling of the surface boundary conditions found in optical fibers and design and fabrication of optical fiber sensors that will be function in the harsh environments where electric fields are present and cannot be disturbed or electric exclusion zones found in high-consequence systems.

Relevant Publications:

  • Surface Plasmon Resonance Fiber Optic Sensors, in Optical Fiber Sensors: Advanced Techniques and Applications, K. B. Pfeifer and S. L. Thornberg, CRC Press, Boca Raton, FL, Ginu Rajan Ed., March 2, 2015.
  • Multi-region Surface Plasmon Sensors for High Consequence Systems in Technologies for Smart Sensor and Sensor Fusion, K. B. Pfeifer and S. L. Thornberg, CRC Press, Boca Raton, FL, Kevin Yallup and Krzysztof Iniewski Eds., April 07, 2014.

Surface Acoustic Wave-Based Sensors

Surface acoustic wave (SAW) based sensors for application in high-consequence systems is an important field of interest. Pfeifer’s research in this field has led to many important discoveries and applications in areas such as chemical weapon monitoring and rapid analysis of water quality.  Specifically, the monitoring of tri-halo methanes (THMs) has allowed the near real-time control of disinfectant distribution in municipal water systems.  THMs are formed when too much disinfectant such as chlorine is added to water and there is an unused excess that degrades into these carcinogenic compounds.  This technology has been successfully spun-off to Parker-Hannifin Corporation which currently manufactures and sells a system based on this Sandia developed SAW technology.

Relevant Publication:

  • Detection of Trihalomethanes Using Nanoporous-Carbon Coated Surface-Acoustic-Wave Sensors, M. P. Siegal, C. D. Mowry, K. B. Pfeifer, D. F. S. Gallis, J. of the Electrochemical Society, Vol. 162, No. 6, March 2015, B114-B120.

Awards, Honors, and Memberships

  • Electrochemical Society International Society of Ion Mobility Spectroscopy
  • Sandia National Laboratories Mission Innovator Award (May 2016)
  • Innovation Award, Midiwing for Musicode Innovations, NM Small Business Assistance Program (May 2012)
  • Sandia National Laboratories Classified Inventor Award, Project “Maxwell” (April 2012)

Publications

Matthew Moorman, Philip Miller, Joshua Whiting, Jason Sammon, Kent Pfeifer, Dennis Carlson, Charles Brusseau, (2021). Next Generation Chemical Agent Detection Architecture [Poster] https://doi.org/10.2172/1892443 Publication ID: 76267

Lauren Wheeler, Erika Roesler, Daniel Bowman, Andrew Glen, Phil Miller, Andres Martinez-Sanchez, Darielle Dexheimer, Garth Rohr, Kent Pfeifer, Zachary Sharp, Jordan Wostbrock, Matthew Moorman, (2020). Solar Climate Intervention: Establishing baseline metrics for the lower stratosphere using the heliotrope solar hot air balloon system https://doi.org/10.2172/1835007 Publication ID: 72103

Lauren Wheeler, Andrew Glen, Erika Roesler, Daniel Bowman, Philip Miller, Andres Sanchez, Darielle Dexheimer, Garth Rohr, Kent Pfeifer, Zachary Sharp, Jordan Wostbrock, (2020). Observations of Stratospheric Aerosols from Heliotrope Solar Hot Air Balloons https://doi.org/10.2172/1835008 Publication ID: 72104

Joshua Whiting, Matthew Moorman, Ronald Manginell, Joe Simonson, Kent Pfeifer, (2020). History of Sandia?s MicroChemLab: a path to reduced false alarms in handheld systems https://www.osti.gov/servlets/purl/1769581 Publication ID: 72939

Joshua Whiting, Matthew Moorman, Jason Sammon, Kent Pfeifer, Robert Simonson, (2020). Microfabrication in GCxGC: a path to reduced false alarms in handheld systems https://www.osti.gov/servlets/purl/1783612 Publication ID: 72881

Matthew Moorman, Joshua Whiting, Kent Pfeifer, Robert Simonson, (2019). Portable Chemical Detection Technology With Ultra-low False Alarms https://www.osti.gov/servlets/purl/1643347 Publication ID: 66419

Joshua Whiting, Edward Myers, Ronald Manginell, Matthew Moorman, Kent Pfeifer, John Anderson, Cory Fix, Cody Washburn, Alan Staton, Daniel Porter, Darin Graf, David Wheeler, John Richards, Komandoor Achyuthan, Michael Roukes, Robert Simonson, (2019). μChemLab? ? Twenty Years of Developing CBRNE Detection Systems with Low False Alarm Rates https://www.osti.gov/servlets/purl/1641071 Publication ID: 69597

Christian Arrington, Eric Langlois, Jamin Pillars, Kent Pfeifer, Andrew Hollowell, Daniel Stick, (2019). High Aspect Ratio Metal Microfabrication https://www.osti.gov/servlets/purl/1644581 Publication ID: 67636

Joshua Whiting, Edward Myers, Ronald Manginell, Matthew Moorman, Kent Pfeifer, John Anderson, Cory Fix, Cody Washburn, Alan Staton, Daniel Porter, Darin Graf, David Wheeler, John Richards, Komandoor Achyuthan, Michael Roukes, Robert Simonson, (2019). μchemLab: Twenty years of developing CBRNE detection systems with low false alarm rates Proceedings of SPIE – The International Society for Optical Engineering https://www.osti.gov/servlets/purl/1641070 Publication ID: 69596

Patrick Finnegan, Cody Washburn, Christopher Dyck, David Burckel, Jill Blecke, Michael Rector, Kent Pfeifer, Michael Satches, (2018). Novel Pyrolyzed Carbon Processing and Applications https://www.osti.gov/servlets/purl/1567828 Publication ID: 59169

Charles Bryan, Kent Pfeifer, Stephen Buerger, Eric Schindelholz, (2018). Innovative Technologies for Optical Detection of Stress Corrosion Cracks https://doi.org/10.2172/1488645 Publication ID: 59064

Ronald Manginell, Matthew Moorman, Robert Simonson, John Anderson, Jason Sammon, Philip Miller, Kent Pfeifer, Joshua Whiting, Ronald Manginell, (2018). Field Portable Micro GC and Micro GCxGC System Development for Chemicals and Biogenic VOCs https://www.osti.gov/servlets/purl/1524266 Publication ID: 61994

Philip Miller, Jason Sammon, Matthew Moorman, Joshua Whiting, Robert Simonson, Curtis Mowry, Adam Pimentel, Ronald Manginell, Kent Pfeifer, Komandoor Achyuthan, (2018). Systems for Plant Volatile Organic Compound (VOC) Analysis https://www.osti.gov/servlets/purl/1500200 Publication ID: 61078

Patrick Finnegan, Cody Washburn, Christopher Dyck, David Burckel, Jill Blecke, Michael Rector, Kent Pfeifer, Michael Satches, (2018). Novel Pyrolyzed Carbon Processing and Applications https://www.osti.gov/servlets/purl/1806504 Publication ID: 58927

Stanley Chou, Bryan Kaehr, Kent Pfeifer, Paul Clem, Adam Hecht, VINCENT TUNG, (2017). Self Assembly for Advanced Manufacturing https://www.osti.gov/servlets/purl/1489130 Publication ID: 54793

Matthew Moorman, Ronald Manginell, Robert Simonson, Curtis Mowry, Philip Miller, Kent Pfeifer, Komandoor Achyuthan, (2017). Systems for Plant Volatile Organic Compound (VOC) Analysis https://www.osti.gov/servlets/purl/1488338 Publication ID: 54672

Kent Pfeifer, Komandoor Achyuthan, Matthew Allen, Michele Denton, Michael Siegal, Ronald Manginell, (2017). Microfabrication of a gadolinium-derived solid-state sensor for thermal neutrons Journal of Radiation Research https://doi.org/10.1093/jrr/rrx010 Publication ID: 52451

Alex Robinson, Kent Pfeifer, Adrian Casias, Stephen Howell, Neil Sorensen, Nancy Missert, (2017). Corrosion Monitors for Embedded Evaluation https://doi.org/10.2172/1367441 Publication ID: 56457

Kent Pfeifer, Clint Furrer III, Paul Sandoval, Stephen Garrett, Nathaniel Pfeifer, (2017). Spatial and Temporal Analysis of Bias HAST System Temperature https://doi.org/10.2172/1347654 Publication ID: 55376

Ronald Manginell, Matthew Moorman, Komandoor Achyuthan, Robert Simonson, Curtis Mowry, Kent Pfeifer, Nathaniel Pfeifer, Colin Sillerud, Bryan Carson, (2017). Field Detection of Chemical Agents and VOCs as Early Symptomatic Markers https://www.osti.gov/servlets/purl/1426426 Publication ID: 55281

Kent Pfeifer, Komandoor Achyuthan, Matthew Allen, Michele Denton, Michael Siegal, Ronald Manginell, (2016). Novel Materials and Devices for Solid-State Neutron Detection https://doi.org/10.2172/1562846 Publication ID: 47096

Christopher Dyck, Cody Washburn, Michael Rector, Patrick Finnegan, Kent Pfeifer, Thomas Beechem, Jill Blecke, Michael Satches, Lee Massey, Christopher Dyck, (2016). Carbon Composite Microelectromechanical Systems (CMEMS) https://doi.org/10.2172/1560994 Publication ID: 48614

Ronald Manginell, Kent Pfeifer, (2015). Novel Materials and Devices for Solid-State Neutron Detection https://doi.org/10.2172/1226121 Publication ID: 46565

Kent Pfeifer, (2014). Modeling of ESD events from polymeric surfaces https://doi.org/10.2172/1200667 Publication ID: 39536

Matt Eichenfield, Richard Givler, Kent Pfeifer, Charles Reinke, Alex Robinson, Paul Resnick, Benjamin Griffin, Eric Langlois, Gregory Nielson, Murat Okandan, (2014). Development of MEMS photoacoustic spectroscopy https://doi.org/10.2172/1200669 Publication ID: 36949

Susan Brozik, Ronen Polsky, DeAnna Campbell, Ronald Manginell, Matthew Moorman, Thayne Edwards, John Anderson, Kent Pfeifer, Darren Branch, (2013). Genomics-enabled sensor platform for rapid detection of viruses related to disease outbreak https://doi.org/10.2172/1096502 Publication ID: 35904

Kent Pfeifer, (2012). Theoretical Noise Analysis Applied to LOD and False Alarm Rates in Conventional IMS https://www.osti.gov/biblio/1067629 Publication ID: 28007

Matthew Moorman, Vincent Hietala, Jon Bryan, Kent Pfeifer, Arthur Rumpf, (2011). Smart Microfabricated Chemical Preconcentrator https://www.osti.gov/servlets/purl/1108262 Publication ID: 22540

Curtis Mowry, Kent Pfeifer, Alex Robinson, Donald Overmyer, Kelly Neely, William Schubert, (2010). Portable System for the Analysis of Hazardous Chemicals in Water https://www.osti.gov/servlets/purl/1682532 Publication ID: 17951

Kent Pfeifer, Steven Thornberg, Michael White, (2009). Surface plasmon sensing of gas phase contaminants using optical fiber https://doi.org/10.2172/973354 Publication ID: 16772

Nancy Missert, Neil Sorensen, Kent Pfeifer, Jonathan Rivera, Stephen Howell, Alex Robinson, (2009). Passive Corrosion Sensor Development https://www.osti.gov/servlets/purl/1142105 Publication ID: 16531

Ronald Manginell, Douglas Adkins, Matthew Moorman, Rameen Hadizadeh, Davor Copic, Daniel Porter, John Anderson, David Wheeler, Kent Pfeifer, Arthur Rumpf, (2009). Mass sensitive, Lorentz-Force actuated, MEMS preconcentrator and chemical sensor ECS Transactions https://www.osti.gov/servlets/purl/1142733 Publication ID: 15233

Ronald Manginell, Patrick Lewis, Vincent Hietala, Jon Bryan, Kent Pfeifer, Michael Siegal, (2008). Micro-Preconcentrator for Integrated Preconcentration and Detection of Chemical Agents and Explosives https://www.osti.gov/servlets/purl/1142349 Publication ID: 14773

Matthew Moorman, Daniel Porter, Kent Pfeifer, (2008). Mass Sensitive Lorentz-Force Actuated MEMS Preconcentrator and Chemical Sensor https://www.osti.gov/servlets/purl/1143056 Publication ID: 14288

Ronald Manginell, Patrick Lewis, Vincent Hietala, Jon Bryan, Kent Pfeifer, Michael Siegal, (2008). Micro-Preconcentrator for Integrated Preconcentration and Detection of Chemical Agents and Explosives https://www.osti.gov/servlets/purl/1142937 Publication ID: 13873

Steven Thornberg, Kent Pfeifer, (2008). Copy of Surface Plasmon Resonance Sensing (SPRS) for Weapon Applications https://www.osti.gov/servlets/purl/1145755 Publication ID: 13177

Matthew Moorman, Daniel Porter, Kent Pfeifer, Kent Pfeifer, (2008). Smart Microfabricated Chemical Preconcentrator https://www.osti.gov/servlets/purl/1146061 Publication ID: 12892

Jeffrey Headrick, Thomas Reichardt, Ray Bambha, Jude Kelley, Kent Pfeifer, Francis Bouchier, (2008). Developing a laser-based ionization approach for detecting explosives with ion mobility spectrometry Optics InfoBase Conference Papers https://www.osti.gov/servlets/purl/1145776 Publication ID: 13031

Sean Hearne, Steven Seel, Kent Pfeifer, Blake Jakaboski, Douglas Ruby, David Adams, (2007). Nano-enable Autonomous Sensor System https://www.osti.gov/servlets/purl/1721449 Publication ID: 11098

Steven Rohde, Murat Okandan, Kent Pfeifer, Dennis De Smet, Kamlesh Patel, Clifford Ho, Christopher Nordquist, Charles Walker, Brandon Rohrer, Stephen Buerger, B. Wroblewski, (2007). Macro-meso-microsystems integration in LTCC : LDRD report https://doi.org/10.2172/920804 Publication ID: 9311

Lisa Theisen, Steven Rohde, Francis Bouchier, Kent Pfeifer, (2006). CORRELATION ION MOBILITY SPECTROSCOPY: THE INTERSECTION OF RADAR AND IMS https://www.osti.gov/servlets/purl/1264096 Publication ID: 7478

Kent Pfeifer, Steven Rohde, Lisa Theisen, Francis Bouchier, (2006). CORRELATION ION MOBILITY SPECTROMETRY: THE INTERSECTION OF RADAR AND IMS https://www.osti.gov/servlets/purl/1264097 Publication ID: 7543

Kent Pfeifer, (2006). ION SWARM CHARGE DISTRUBTIONS MEASURED USING CURRENT SHAPE https://www.osti.gov/servlets/purl/1264505 Publication ID: 7544

Steven Rohde, Kent Pfeifer, (2006). Signal-to-noise and resolution enhancement in ion mobility spectrometry using correlation gating techniques : barker codes Proposed for publication in the Analytical Chemistry . https://www.osti.gov/biblio/884751 Publication ID: 6892

Kent Pfeifer, Michael Sinclair, (2006). Detection of carbon monoxide (CO) as a furnace byproduct using a rotating mask spectrometer https://doi.org/10.2172/903153 Publication ID: 8883

Alex Robinson, Daniel Trudell, Ronald Manginell, Patrick Lewis, Douglas Adkins, Kent Pfeifer, Shawn Dirk, Stephen Howell, Richard Kottenstette, (2005). Microfabricated systems and components for versatile detection of vapor threats https://www.osti.gov/biblio/969597 Publication ID: 5004

James Allen, Michael Sinclair, Kent Pfeifer, (2005). Advanced polychromator systems for remote chemical sensing (LDRD project 52575) https://doi.org/10.2172/921144 Publication ID: 4236

William Yelton, Kent Pfeifer, (2004). Nano electrode arrays for in-situ identification and quantification of chemicals in water https://doi.org/10.2172/920812 Publication ID: 4159

Kevin Linker, Kevin Linker, Charles Brusseau, Mary-Anne Mitchell, Douglas Adkins, Kent Pfeifer, Arthur Rumpf, (2003). Portable explosives detection system : MicroHound https://www.osti.gov/biblio/946580 Publication ID: 2288

Kent Pfeifer, Arthur Rumpf, Sarah Leming, (2001). Embedded Self-Powered MicroSensors for Monitoring the Surety of Critical Buildings and Infrastructures https://doi.org/10.2172/810690 Publication ID: 1367

Kent Pfeifer, Richard Cernosek, (2001). An Examination of System Architectures for Distributing Sensor Data Via Ethernet Networks https://doi.org/10.2172/776354 Publication ID: 1116

William Yelton, Kent Pfeifer, (2000). Characteristics and Mechanisms in Ion-Conducting Polymer Films as Chemical Sensors The Electrochemical Society https://www.osti.gov/servlets/purl/759880 Publication ID: 649

Showing Results. Show More Publications

Selected Publications

  • Microfabrication of a Gadolinium-derived Solid-state Sensor for Thermal Neutrons, Kent B. Pfeifer, Komandoor E. Achyuthan, Matthew Allen, Michele L. B. Denton, Michael P. Siegal, and Ronald P. Manginell, Journal of Radiation Research, Vol. 58, No. 4, 2017, pp. 464–473.
  • Detection of Trihalomethanes Using Nanoporous-Carbon Coated Surface-Acoustic-Wave Sensors, M. P. Siegal, C. D. Mowry, K. B. Pfeifer, D. F. S. Gallis, J. of the Electrochemical Society, Vol. 162, No. 6, March, 2015, B114-B120.
  • Two-Dimensional Péclet Numbers for Peak Quality Scoring, K. B. Pfeifer, W. G. Yelton, D. R. Kerr IEEE Sensors Journal, Vol. 11, Issue: 9, Sept. 2011, pp. 2108-2110.
  • Surface Plasmon Sensing of Gas Phase Contaminants Using a Single-Ended Multi-region Optical Fiber, Pfeifer, Kent B., Thornberg, Steven M.,  IEEE Sensors Journal, Vol. 10,  No. 8, Aug. 2010, 1360-1367.
  • Mass-Sensitive Microfabricated Chemical Preconcentrator,  Manginell, R. P., Adkins, D. R., Moorman, M. W., Hadizadeh, R, Copic, D., Porter, D. A., Anderson, J. M., Hietala, V. M., Bryan, J. R., Wheeler, D. R., Pfeifer, K. B., Rumpf, A. N., Journal of Microelectronmechanical Systems, Vol. 17, No. 6, Dec. 2008, pg.1396-1407
  • Signal-to-Noise and Resolution Enhancement in Ion Mobility Spectrometry Using Correlation Gating Techniques: Barker Codes, K. B. Pfeifer, S. B. Rohde, IEEE Sensors Journal, Vol. 7. No. 8, August 2007, pg. 1130.
  • LTCC Microsystems and Microsystem Packaging and Integration Applications, K. A. Peterson, K. D. Patel, C. K Ho, B. R. Roherer, C. D. Nordquist, B. D. Wroblewski, K. B. Pfeifer, Journal of Microelectronics and Electronic Packaging, Vol. 3, No. 3, 2006, pg. 109.
  • Measurement of ion swarm distribution functions in miniature low-temperature co-fire ceramic ion mobility spectrometer drift tubes, K. B. Pfeifer, A. N. Rumpf, Analytical Chemistry, 77, (2005) 16, 5215-5220.
  • Miniaturized Ion Mobility Spectrometer for explosives and contraband Detection, K. B. Pfeifer, R. C. Sanchez, International Journal for Ion Mobility Spectrometry, 5 (2002) 3, pp. 63-66.
  • Porous Al2O3 Nanogeometry sensor films: Growth and Analysis, W. Graham Yelton, Kent B. Pfeifer, Alan W. Staton, Journal of the ElectroChemical Society, V. 149(#1) pp. H1-H5, Jan 2002.
  • Characteristics and Mechanisms in Ion-Conducting Polymer Films as Chemical Sensors, Robert C. Hughes, W. Graham Yelton, Kent B. Pfeifer, Sanjay V. Patel, Journal of the Electrochemical Society, V 148(#4), pp. H37-H44, Apr. 2001.
  • Sensors for the Detection of Moisture in Inert and Corrosive Gases, M. J. Kelly, R. P. Goehner, R. S. Blewer, B. R. Stallard, M. J. Garcia, K. B. Pfeifer, T. R. Guilinger, D. W. Peterson, M. R. Tuck, J. N. Sweet, K. R. Zavadil, G. T. Cordes, Semiconductor Industry Developments and Results from the Twelve Years of the UltraClean Society, The Society for the Study of Semiconductor Substrate Technology, (to be published).
  • Viologen Polymer-Coated Impedance Sensors for Midrange Humidity Levels and Other Volatile Organic Compounds, K. B. Pfeifer, R. C. Hughes, M. W. Jenkins, and T. W. Schneider, Journal of the Electrochemical Society, Vol. 146, No. 2, pp. 794-799, 1999.
  • Fiber-optic Polymer Residue Monitor, K. B. Pfeifer, R. L. Jarecki, and T. J. Dalton, SPIE Conference on Chemical Microsensors and Applications, Boston, MA, Vol. 3539, Nov. 1998.
  • Heat of Adsorption and Thin Film Surface Area Studies of a Silicon-Sol-Gel Exposed to HCI and H20, K. B. Pfeifer, Langmuir, 1995, 11, pp 4933-4796.
  • Polymer-coated surface-acoustic -wave Monitoring of CCl4 in a Steam Reforming Reactor, K. B. Pfeifer, J. L. Sprung and T. R. Galloway, Sensors and Actuators B 22 (1994) pp 37-45.
  • Portable Acoustic Wave Sensor Systems for On-Line Monitoring of Volatile Organics, G. C. Frye,  S. J. Martin, R. W. Cernosek, and K. B. Pfeifer, Intl. J. Environmentally Conscious Manufacturing, Vol. 1 (1992), p. 37.
  • The Detection of Organophosphonates by Polymer Films on a Surface Acoustic Wave Device and a Micromirror Fiber Optic Sensor, R. C Hughes, A. J. Ricco, M. A. Butler and K. B. Pfeifer, Applied Biochemistry and Biotechnology, Vol 38, 1993.  (8/26/92)
  • Two Dimensional Barker Patterns for Optical Alignment, M. A. Butler, K. B. Pfeifer and A. J. Martin, Applied Optics, Vol. 30, No. 32, 10 Nov. 1991.

Selected Book Chapters

  • Surface Plasmon Resonance Fiber Optic Sensors, in Optical Fiber Sensors: Advanced Techniques and Applications, K. B. Pfeifer and S. L. Thornberg, CRC Press, Boca Raton, FL, Ginu Rajan Ed., March 2, 2015.
  • Multi-region Surface Plasmon Sensors for High Consequence Systems in Technologies for Smart Sensor and Sensor Fusion, K. B. Pfeifer and S. L. Thornberg, CRC Press, Boca Raton, FL, Kevin Yallup and Krzysztof Iniewski Eds., April 07, 2014.

Selected Patents

  • PC board mount corrosion sensitive sensor, Robinson; Alex L., Casias; Adrian L., Pfeifer; Kent B., Laguna; George R., United States Patent 9,291,543, March 22, 2016.
  • Wireless passive radiation sensor, Pfeifer; Kent B., Rumpf; Arthur N., Yelton; William G., Limmer; Steven J., US Patent 8,596,862, December 3, 2013
  • Method of multi-dimensional moment analysis for the characterization of signal peaks, Pfeifer, Kent, B, Yelton W. Graham, Kerr, Dayle, R., Bouchier, Francis, A., United States Patent 8,296,078, October 23, 2012.
  • Wireless passive temperature sensor, Pfeifer; Kent B., Rumpf; Arthur N.  United States Patent, 8,240,911, August 14, 2012
  • Ion mobility spectrometer with virtual aperture grid, Pfeifer; Kent B., Rumpf; Arthur N., United States Patent, 7,838,823, November 23, 2010.
  • Correlation spectrometer, Sinclair; Michael B. Pfeifer; Kent B., Flemming; Jeb H., Jones; Gary D., Tigges; Chris P., United States Patent, 7,697,134 , April 13, 2010.
  • Correlation ion mobility spectroscopy, Pfeifer; Kent B., Rohde; Steven B., United States Patent 7,417,222, August 26, 2008. Passive tire pressure sensor and method, Pfeifer; Kent Bryant, Williams; Robert Leslie, Waldschmidt; Robert Lee, Morgan; Catherine Hook, United States Patent, 7,263,892, September 4, 2007.
  • Method for producing a tube, Peterson; Kenneth A., Rohde; Steven B., Pfeifer; Kent B., Turner; Timothy S., United States Patent 7,155,812, January 2, 2007
  • Passive tire pressure sensor and method, Pfeifer; Kent Bryant, Williams; Robert Leslie, Waldschmidt; Robert Lee, Morgan; Catherine Hook, United States Patent, 7,096,736, August 29, 2006.
  • Three dimensional stress vector array and method therefore, Pfeifer; Kent Bryant, Rudnick; Thomas Jeffery United States Patent, 6,912,914, July 5, 2005.
  • Acoustic-wave sensor for ambient monitoring of a photoresist-stripping agent, Pfeifer; Kent B., Hoyt; Andrea E., Frye; Gregory C.,  United States Patent 5,795,993, August 18, 1998.
  • Acoustic wave (AW) based moisture sensor for use with corrosive gases, Pfeifer; Kent B., Frye; Gregory C., Schneider; Thomas W., United States Patent, 5,571,944, November 5, 1996.
  • Ferroelectric optical image comparator. Butler; Michael A., Land; Cecil E., Martin; Stephen J., Pfeifer; Kent B., United States Patent, 5,267,179, November 30, 1993.