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

Title: Resonance-enhanced dielectric sensing of chemical and biological species

Abstract

A dielectric sensing method and apparatus are provided for detection and classification of chemical and biological materials. Resonance patterns of a sample within a resonator are detected for identifying a shift in resonance frequency and a change of line width before and after introduction of the sample. The identified shift in resonance frequency and change of line width are used for determining a complex dielectric constant of the sample for the material detection and classification. A degree of selectivity at any excitation frequency is enabled for the dielectric sensing method from the manner in which the complex dielectric constant of a material affects the resonance pattern of the resonator with respect to shift in resonance frequency and the change in line width. By selecting the excitation frequencies to generally correspond to one of the resonance frequencies of the sample material under test, the degree of selectivity and the sensitivity of detection are enhanced.

Inventors:
;
Issue Date:
Research Org.:
U Chicago Argonne LLC, Chicago, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531531
Patent Number(s):
7,223,608
Application Number:
10/637,127
Assignee:
U Chicago Argonne LLC (Chicago, IL)
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 2003-08-08
Country of Publication:
United States
Language:
English

Citation Formats

Gopalsami, Nachappa, and Raptis, Apostolos C. Resonance-enhanced dielectric sensing of chemical and biological species. United States: N. p., 2007. Web.
Gopalsami, Nachappa, & Raptis, Apostolos C. Resonance-enhanced dielectric sensing of chemical and biological species. United States.
Gopalsami, Nachappa, and Raptis, Apostolos C. Tue . "Resonance-enhanced dielectric sensing of chemical and biological species". United States. https://www.osti.gov/servlets/purl/1531531.
@article{osti_1531531,
title = {Resonance-enhanced dielectric sensing of chemical and biological species},
author = {Gopalsami, Nachappa and Raptis, Apostolos C.},
abstractNote = {A dielectric sensing method and apparatus are provided for detection and classification of chemical and biological materials. Resonance patterns of a sample within a resonator are detected for identifying a shift in resonance frequency and a change of line width before and after introduction of the sample. The identified shift in resonance frequency and change of line width are used for determining a complex dielectric constant of the sample for the material detection and classification. A degree of selectivity at any excitation frequency is enabled for the dielectric sensing method from the manner in which the complex dielectric constant of a material affects the resonance pattern of the resonator with respect to shift in resonance frequency and the change in line width. By selecting the excitation frequencies to generally correspond to one of the resonance frequencies of the sample material under test, the degree of selectivity and the sensitivity of detection are enhanced.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {5}
}

Patent:

Save / Share:

Works referenced in this record:

Sensors of conducting and insulating composites
patent, May 2005


Method and device for measuring dielectric constant
patent, December 2002


    Works referencing / citing this record:

    Flow measurements
    patent, October 2013