2010
DOI: 10.1021/ac100527r
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Multichannel Wireless-Electrodeless Quartz-Crystal Microbalance Immunosensor

Abstract: We develop the wireless-electrodeless multichannel quartz-crystal microbalance (QCM) biosensor using quartz plates of slightly different thicknesses. Their shear vibrations are simultaneously excited and detected by a pair of antenna wires to perform the noncontacting measurement. Their fundamental resonance frequencies are between 43 and 55 MHz, and vibrations at up to 10 channels are measured in liquids. Owing to high affinity of naked quartz surfaces for proteins, we immobilized various receptor proteins on… Show more

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Cited by 34 publications
(26 citation statements)
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“…The formation of phospholipid bilayers was used as a test case and total sample volumes were twenty fold lower than commercial QCM equipment (Ohlsson et al ., ). Furthermore, a wireless QCM system was developed where the shear vibration excitation and detection was achieved using antennas and the system was demonstrated using antigen‐antibody interactions (Ogi et al ., ).…”
Section: Technical Developments and Novel Applicationsmentioning
confidence: 97%
“…The formation of phospholipid bilayers was used as a test case and total sample volumes were twenty fold lower than commercial QCM equipment (Ohlsson et al ., ). Furthermore, a wireless QCM system was developed where the shear vibration excitation and detection was achieved using antennas and the system was demonstrated using antigen‐antibody interactions (Ogi et al ., ).…”
Section: Technical Developments and Novel Applicationsmentioning
confidence: 97%
“…A recent extension of the technique allows the simultaneous measurement of energy dissipation and provides new insight into the protein adsorption process. Using QCM, multichannel detection is possible on a one-chip system [86]. …”
Section: Label-free Detectionmentioning
confidence: 99%
“…For example, a much used biosensor is based on the quartz crystal microbalance which can convert specific receptor/ligand interactions into a change in resonant frequency of a quartz crystal (Ogi et al, 2010;Saitakis et al, 2010). In the case that no dynamic mechanical or electronic function is to be performed by the device, the interface can be considered as biomaterial.…”
Section: Definition Of the Bio-machine Interfacementioning
confidence: 99%