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Displaying 51 - 75 of 99

Analog BIST Functionality for Microhotplate Temperature Sensors

September 1, 2009
Author(s)
Muhammad Y. Afridi, Christopher B. Montgomery, Elliott cooper-Balis, Stephen Semancik, Kenneth G. Kreider, Jon C. Geist
In this paper we describe a novel microhotplate temperature sensor calibration technique suitable for Built-In Self Test. The technique only requires short-term temperature stability from the four-wire polysilicon heater/temperature sensors that are

CMOS Microhotplate Technology for Chemical and Biological Agent Detection

March 16, 2009
Author(s)
Muhammad Y. Afridi, Christopher B. Montgomery, Elliott cooper-Balis, Stephen Semancik, Jon C. Geist, Alim A. Fatah
In this paper we describe microhotplates that can serve as platforms for gas sensors of potential use for homeland security and other gas sensing applications. A brief review of the fabrication of microhotplate precursors in a CMOS-compatible technology

Electrical Manipulation of Gold Nanoparticles for Microfluidic Applications

October 16, 2008
Author(s)
Darwin R. Reyes-Hernandez, Geraldine I. Mijares, Kimberly A. Briggman, Jon C. Geist, Michael Gaitan
An electrical method to trap and release gold nanoparticles to and from the surface of alkanethiol-modified gold electrodes is presented. When a positive bias versus a Ag/AgCl reference electrode was applied to gold electrodes, negatively-charged gold

Microfluidic DNA Analysis Systems for Forensic Applications

July 18, 2008
Author(s)
Michael Gaitan, Jayna J. Shah, Darwin Reyes-Hernandez, Pierre-Alain Auroux, Jon Geist, Laurie E. Locascio, Wyatt N. Vreeland, David J. Ross, Peter Vallone, Paul Smith, Nicole Morgan, Tom Pohida, John Kakareka, Annelise Barron
This report summarizes the NIST effort on microfluidic DNA analysis systems for forensic applications sponsored by the National Institute of Justice. Currently emerging microfluidics-based forensic systems are implemented in silica (glass) because the

Microwave Dielectric Heating of Fluids in an Integrated Microfluidic Device

October 3, 2007
Author(s)
Jayna J. Shah, Siddarth Sundaresan, Jon Geist, Darwin Reyes-Hernandez, James Booth, Rao Mulpuri, Michael Gaitan
Rapid, selective, and uniform heating of sub-microliter size fluid volumes is vital for micro total analysis system (?gTAS) applications. In this work, we present an approach to localized and selective heating of fluids in a microfluidic network. This is

Microwave Power Absorption in Low-Reflectance, Complex, Lossy Transmission Lines

August 1, 2007
Author(s)
Jon Geist, Jayna J. Shah, Mulpuri Rao, Michael Gaitan
Simple sets of equations have been derived to describe the absorption of microwave power in threeregion, lossy transmission lines in terms of S-parameter reflection and transmission amplitudes. Each region was assumed to be homogeneous with discontinuities

Capillarity Induced Solvent?Actuated Bonding of Polymeric Microfluidic Devices

April 12, 2006
Author(s)
Jayna J. Shah, Jon C. Geist, Laurie E. Locascio, Michael Gaitan, Rao Mulpuri, Wyatt N. Vreeland
Rapid, robust and economical fabrication of fluidic microchannels is of fundamental importance for the successful development of disposable lab-on-a-chip devices. In this work, we present a solvent-actuated bonding method for fabricating polymeric

Abstracts for the MSEL Assessment Panel, March 2001

January 26, 2001
Author(s)
Leslie E. Smith, Alamgir Karim, Leonid A. Bendersky, C Lu, J J. Scott, Ichiro Takeuchi, Kathleen M. Flynn, Vinod K. Tewary, Davor Balzar, G A. Alers, Stephen E. Russek, Charles C. Han, Haonan Wang, William E. Wallace, Daniel A. Fischer, K Efimenko, Wen-Li Wu, Jan Genzer, Joseph C. Woicik, Thomas H. Gnaeupel-Herold, Henry J. Prask, Charles F. Majkrzak, Norman F. Berk, John G. Barker, Charles J. Glinka, Eric K. Lin, Ward L. Johnson, Paul R. Heyliger, David T. Read, R R. Keller, J Blendell, Grady S. White, Lin-Sien H. Lum, Eric J. Cockayne, Igor Levin, C E. Johnson, Maureen E. Williams, Gery R. Stafford, William J. Boettinger, Kil-Won Moon, Daniel Josell, Daniel Wheeler, Thomas P. Moffat, W H. Huber, Lee J. Richter, Clayton S. Yang, Robert D. Shull, R A. Fry, Robert D. McMichael, William F. Egelhoff Jr., Ursula R. Kattner, James A. Warren, Jonathan E. Guyer, Steven P. Mates, Stephen D. Ridder, Frank S. Biancaniello, D Basak, Jon C. Geist, Kalman D. Migler
Abstracts relating to research and development in the NIST Materials Science and Engineering Laboratory (MSEL) are presented for a poster session to be presented to the 2001 MSEL Assessment Panel.

In-Flight Measurement of Thermal Spray Particle Temperatures Using Two-Color Optical Pyrometry

October 11, 2000
Author(s)
Frank S. Biancaniello, Steven P. Mates, Stephen D. Ridder, D Basak, D W. Bonnell, Jon C. Geist
Thermal spray is a materials processing technique used to deposit coatings to provide improved wear, corrosion, and/or thermal protection for engineering components. Thick (>10 {micro}m) thermal spray coatings are made up of individual solidified splats