skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Capacitively readout multi-element sensor array with common-mode cancellation

Abstract

An improved multi-element apparatus for detecting the presence of at least one chemical, biological or physical component in a monitored area comprising an array or single set of the following elements: a capacitive transducer having at least one cantilever spring element secured thereto, the cantilever element having an area thereof coated with a chemical having an affinity for the component to be detected; a pick-up plate positioned adjacent to the cantilever element at a distance such that a capacitance between the cantilever element and the pick-up plate changes as the distance between the cantilever element and the pick-up plate varies, the change in capacitance being a measurable variation; a detection means for measuring the measurable variation in the capacitance between the cantilever element and the pick-up plate that forms a measurement channel signal; and at least one feedback cantilever spring element positioned apart from the coated cantilever element, the cantilever element substantially unaffected by the component being monitored and providing a reference channel signal to the detection means that achieves a common mode cancellation between the measurement channel signal and reference channel signal.

Inventors:
 [1];  [2];  [2];  [3];  [2];  [2]
  1. (Alcoa, TN)
  2. (Knoxville, TN)
  3. (Decatur, TN)
Issue Date:
Research Org.:
LOCKHEED MARTIN ENERGY RES COR
OSTI Identifier:
873469
Patent Number(s):
6167748
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN); University of Tennessee Research Corporation (Knoxville, TN) ORNL
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
capacitively; readout; multi-element; sensor; array; common-mode; cancellation; improved; apparatus; detecting; presence; chemical; biological; physical; component; monitored; comprising; single; set; following; elements; capacitive; transducer; cantilever; spring; element; secured; thereto; coated; affinity; detected; pick-up; plate; positioned; adjacent; distance; capacitance; changes; varies; change; measurable; variation; detection; means; measuring; forms; measurement; channel; signal; feedback; apart; substantially; unaffected; providing; reference; achieves; common; mode; common mode; sensor array; detection means; spring element; positioned adjacent; secured thereto; single set; capacitive transducer; channel signal; plate positioned; element positioned; cantilever spring; /73/204/422/435/436/

Citation Formats

Britton, Jr., Charles L., Warmack, Robert J., Bryan, William L., Jones, Robert L., Oden, Patrick Ian, and Thundat, Thomas. Capacitively readout multi-element sensor array with common-mode cancellation. United States: N. p., 2001. Web.
Britton, Jr., Charles L., Warmack, Robert J., Bryan, William L., Jones, Robert L., Oden, Patrick Ian, & Thundat, Thomas. Capacitively readout multi-element sensor array with common-mode cancellation. United States.
Britton, Jr., Charles L., Warmack, Robert J., Bryan, William L., Jones, Robert L., Oden, Patrick Ian, and Thundat, Thomas. Mon . "Capacitively readout multi-element sensor array with common-mode cancellation". United States. https://www.osti.gov/servlets/purl/873469.
@article{osti_873469,
title = {Capacitively readout multi-element sensor array with common-mode cancellation},
author = {Britton, Jr., Charles L. and Warmack, Robert J. and Bryan, William L. and Jones, Robert L. and Oden, Patrick Ian and Thundat, Thomas},
abstractNote = {An improved multi-element apparatus for detecting the presence of at least one chemical, biological or physical component in a monitored area comprising an array or single set of the following elements: a capacitive transducer having at least one cantilever spring element secured thereto, the cantilever element having an area thereof coated with a chemical having an affinity for the component to be detected; a pick-up plate positioned adjacent to the cantilever element at a distance such that a capacitance between the cantilever element and the pick-up plate changes as the distance between the cantilever element and the pick-up plate varies, the change in capacitance being a measurable variation; a detection means for measuring the measurable variation in the capacitance between the cantilever element and the pick-up plate that forms a measurement channel signal; and at least one feedback cantilever spring element positioned apart from the coated cantilever element, the cantilever element substantially unaffected by the component being monitored and providing a reference channel signal to the detection means that achieves a common mode cancellation between the measurement channel signal and reference channel signal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

Patent:

Save / Share: