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Title: Method For Chemical Sensing Using A Microfabricated Teeter-Totter Resonator

Abstract

A method for sensing a chemical analyte in a fluid stream comprises providing a microfabricated teeter-totter resonator that relies upon a Lorentz force to cause oscillation in a paddle, applying a static magnetic field substantially aligned in-plane with the paddle, energizing a current conductor line on a surface of the paddle with an alternating electrical current to generate the Lorentz force, exposing the resonator to the analyte, and detecting the response of the oscillatory motion of the paddle to the chemical analyte. Preferably, a chemically sensitive coating is disposed on at least one surface of the paddle to enhance the sorption of the analyte by the paddle. The concentration of the analyte in a fluid stream can be determined by measuring the change in the resonant frequency or phase of the teeter-totter resonator as the chemical analyte is added to or removed from the paddle.

Inventors:
 [1];  [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
880029
Patent Number(s):
6823720
Application Number:
10/436596
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Adkins, Douglas Ray, Heller, Edwin J, and Shul, Randy J. Method For Chemical Sensing Using A Microfabricated Teeter-Totter Resonator. United States: N. p., 2004. Web.
Adkins, Douglas Ray, Heller, Edwin J, & Shul, Randy J. Method For Chemical Sensing Using A Microfabricated Teeter-Totter Resonator. United States.
Adkins, Douglas Ray, Heller, Edwin J, and Shul, Randy J. Tue . "Method For Chemical Sensing Using A Microfabricated Teeter-Totter Resonator". United States. https://www.osti.gov/servlets/purl/880029.
@article{osti_880029,
title = {Method For Chemical Sensing Using A Microfabricated Teeter-Totter Resonator},
author = {Adkins, Douglas Ray and Heller, Edwin J and Shul, Randy J},
abstractNote = {A method for sensing a chemical analyte in a fluid stream comprises providing a microfabricated teeter-totter resonator that relies upon a Lorentz force to cause oscillation in a paddle, applying a static magnetic field substantially aligned in-plane with the paddle, energizing a current conductor line on a surface of the paddle with an alternating electrical current to generate the Lorentz force, exposing the resonator to the analyte, and detecting the response of the oscillatory motion of the paddle to the chemical analyte. Preferably, a chemically sensitive coating is disposed on at least one surface of the paddle to enhance the sorption of the analyte by the paddle. The concentration of the analyte in a fluid stream can be determined by measuring the change in the resonant frequency or phase of the teeter-totter resonator as the chemical analyte is added to or removed from the paddle.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {11}
}

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Works referenced in this record:

Flexural plate wave resonator excited with Lorentz forces
journal, May 1998


Acoustic Wave Microsensor Arrays for Vapor Sensing
journal, July 2000


A high sensitivity, wide dynamic range magnetometer designed on a xylophone resonator
journal, October 1996


Gas sensing with acoustic devices
conference, January 1996