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You searched on: Author: jon geist

Displaying records 41 to 50 of 87 records.
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41. Electrical Manipulation of Gold Nanoparticles for Microfluidic Applications
Published: 10/16/2008
Authors: Darwin R Reyes-Hernandez, Geraldine I. Mijares, Kimberly A Briggman, Jon C Geist, Michael Gaitan
Abstract: 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 go ...

42. The NIST MNT 5-in-1 Standard Reference Material for Measuring 5 Key Metrics
Published: 8/11/2008
Authors: Janet M Cassard, Jon C Geist, Michael Gaitan

43. Microfluidic DNA Analysis Systems for Forensic Applications
Series: Special Publication (NIST SP)
Report Number: 1083
Published: 7/18/2008
Authors: Michael Gaitan, Jayna J Shah, Darwin R Reyes-Hernandez, Pierre-Alain Auroux, Jon C Geist, Laurie E Locascio, Wyatt N Vreeland, David J Ross, Peter M Vallone, Paul Smith, Nicole Morgan, Tom Pohida, John Kakareka, Annelise Barron
Abstract: 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 t ...

44. Microwave Dielectric Heating of Fluids in an Integrated Microfluidic Device
Published: 10/3/2007
Authors: Jayna J Shah, Siddarth Sundaresan, Jon C Geist, Darwin R Reyes-Hernandez, James C Booth, Rao Mulpuri, Michael Gaitan
Abstract: 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. Thi ...

45. Microwave Power Absorption in Low-Reflectance, Complex, Lossy Transmission Lines
Series: Journal of Research (NIST JRES)
Published: 8/1/2007
Authors: Jon C Geist, Jayna J Shah, Mulpuri Rao, Michael Gaitan
Abstract: 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 discontin ...

46. A Low Cost Digital Vibration Meter
Series: Journal of Research (NIST JRES)
Published: 4/1/2007
Authors: William V Payne, Jon Geist
Abstract: This report describes the development of a low cost vibration amplitude sensor. The processes used to develop this sensor involve the use of Micro-Electronic and Mechanical Systems (MEMS) manufacturing techniques. The major mechanical element of th ...

47. Surface Modification of PMMA for Application of Wall Coating Polymers for Microchip Electrophoresis
Published: 9/1/2006
Authors: Jayna J Shah, Jon C Geist, Laurie E Locascio, Michael Gaitan, Rao Mulpuri, Wyatt N Vreeland
Abstract: The development of rapid and simple wall coating strategies for high resolution electrophoretic separation of DNA is of crucial importance for the successful implementation of miniaturized polymeric DNA analysis systems. In this report, we present an ...

48. Simple Thermal Efficiency Model for CMOS-Microhotplate Design
Series: Journal of Research (NIST JRES)
Published: 5/31/2006
Authors: Jon C Geist, Muhammad Yaqub Afridi, Ankush Varma, Allen R Hefner Jr.

49. Capillarity Induced Solvent?Actuated Bonding of Polymeric Microfluidic Devices
Published: 4/12/2006
Authors: Jayna J Shah, Jon C Geist, Laurie E Locascio, Michael Gaitan, Rao Mulpuri, Wyatt N Vreeland
Abstract: 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 th ...

50. Microhotplate-Based Sensor Platform for Submicron SoC Designs
Published: 12/9/2005
Authors: Muhammad Yaqub Afridi, Allen R Hefner Jr., Jon C Geist, Colleen E. Hood, Ankush Varma, Bruce Jacob

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