Qcm sensor

G - Physics – 01 – G

Patent

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Details

G01G 3/16 (2006.01) G01G 3/13 (2006.01) G01N 5/02 (2006.01) G01N 27/00 (2006.01) G01N 29/02 (2006.01) G01N 29/036 (2006.01)

Patent

CA 2282703

A QCM sensor including a sensor device, the sensor device having a crystal substrate, on both of front and rear surfaces of which a pair of electrodes are disposed so as to oppose with each other and the QCM sensor detecting and quantitatively analyzing components of a sample from either a variation in a fundamental resonant frequency or a variation in an impedance when a surface of one of the pair of electrodes is immersed into either a sample gas or a sample solution. The sensor device is arranged in a multi-channel structure such that four mutually opposing electrodes (11A through 14A, 12B through 14B) are disposed on both front and rear surfaces of the crystal substrate 10, each electrode being arranged to enable a fixation of a receptor which is different for each component of a sample to be detected and quantitatively analyzed, whereby the QCM sensor detects and quantitatively analyzes once the components of one sample different for different electrodes. 22

L'invention concerne un capteur QCM destiné à détecter et à mesurer les composants d'un échantillon sur la base des changements dans la fréquence de résonance principale ou dans l'impédance, ces changements étant survenus lorsque les surfaces des électrodes d'un dispositif de détection possédant des électrodes opposées aux surfaces avant et arrière d'un substrat de quartz sont exposées à un échantillon sous forme de gaz ou de solution.e dispositif de détection possède une structure à canaux multiples et comporte quatre électrodes opposées (de 11 A à 14 B, de 12 B à 14 B) aménagées sur les surfaces avant et arrière d'un substrat de quartz (10). Des récepteurs sont fixés aux électrodes; ils sont différents pour les composants d'un échantillon détecté et mesuré. Les composants d'un échantillon sont détectés et mesurés en une fois au moyen des différentes électrodes.

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