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Multichannel QCM-based system for continuous monitoring of bacterial biofilm growth

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10.1109/TIM.2019.2929280
 
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hdl:2117/177703

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Amer Boixareu, Miguel ÁngelMés informació
Turó Peroy, AntonioMés informacióMés informacióMés informació
Salazar Soler, JorgeMés informacióMés informacióMés informació
Berlanga Herrera, Luis
García Hernández, Miguel J.Més informacióMés informació
Chávez Domínguez, Juan AntonioMés informacióMés informacióMés informació
Document typeArticle
Defense date2020-06
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
ProjectMONITORIZACION CONTINUA DEL CRECIMIENTO E INHIBICION DE BIOFILMS BACTERIANOS BASADA EN RESONADORES QCM (AEI-RTI2018-099938-B-I00)
Abstract
Quartz crystal microbalance (QCM) sensors are becoming a good alternative to analytical methods for the measurement of bacterial growth in liquid media culture. For this purpose, two essential resonance parameters allow monitoring of biofilm formation: the series resonance frequency shift and the change of the resistance at this frequency. Nevertheless, several problems arise in determining these parameters, as their relative variation is very small. This means that an accurate procedure must be implemented for the measurement of the QCM resonance parameters, including the automatic calibration of the frequency response effects of the measurement circuits and the automatic compensation of the static electrical capacitance of the QCM. In this paper, a novel multichannel system for on-line monitoring of biofilm formation based on QCM sensors is proposed. QCM resonance parameters are determined from the electrical impedance analysis by means of an auto-balanced impedance bridge. This configuration has allowed the implementation of an affordable multichannel measurement instrument. Obtained results, based on binary mixtures of water-glycerol measurements and real microorganism experiments, are in good agreement with the theoretical behaviour. These results show the great potential of this instrument to be used for monitoring microbial growth and biofilm formation.
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© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
CitationAmer, M. [et al.]. Multichannel QCM-based system for continuous monitoring of bacterial biofilm growth. "IEEE transactions on instrumentation and measurement", Juny 2020, vol. 69, núm. 6, p. 2982-2995. 
URIhttp://hdl.handle.net/2117/177703
DOI10.1109/TIM.2019.2929280
ISSN0018-9456
Publisher versionhttps://ieeexplore.ieee.org/document/8765365
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  • GSS - Grup Sistemes Sensors - Articles de revista [12]
  • Departament d'Enginyeria Electrònica - Articles de revista [1.531]
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