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Monitoring of bacteria growth using a wireless, remote query resonant-circuit sensor: application to environmental sensingA new technique is presented for in-vivo remote query measurement of the complex permittivity spectra of a biological culture solution. A sensor comprised of a printed inductor-capacitor resonant-circuit is placed within the culture solution of interest, with the impedance spectrum of the sensor measured using a remotely located loop antenna; the complex permittivity spectra of the culture is calculated from the measured impedance spectrum. The remote query nature of the sensor platform enables, for example, the in-vivo real-time monitoring of bacteria or yeast growth from within sealed opaque containers. The wireless monitoring technique does not require a specific alignment between sensor and antenna. Results are presented for studies conducted on laboratory strains of Bacillus subtilis, Escherichia coli JM109, Pseudomonas putida and Saccharomyces cerevisiae.
Document ID
20040112422
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ong, K. G.
(University Park Pennsylvania, PA 16802, United States)
Wang, J.
Singh, R. S.
Bachas, L. G.
Grimes, C. A.
Daunert, S.
Date Acquired
August 21, 2013
Publication Date
June 1, 2001
Publication Information
Publication: Biosensors & bioelectronics
Volume: 16
Issue: 4-5
ISSN: 0956-5663
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Life Sciences Technologies

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