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1. WO2020144620 - SENSORIZED DEVICE FOR THE ANALYSIS OF A FLUID BY MEANS OF ACOUSTIC WAVES

Publication Number WO/2020/144620
Publication Date 16.07.2020
International Application No. PCT/IB2020/050151
International Filing Date 09.01.2020
Chapter 2 Demand Filed 10.11.2020
IPC
G01N 29/02 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
B01L 3/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
3Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
G01N 29/036 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
036by measuring frequency or resonance of acoustic waves
CPC
G01N 2291/0255
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
02Indexing codes associated with the analysed material
025Change of phase or condition
0255(Bio)chemical reactions, e.g. on biosensors
G01N 2291/0256
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
02Indexing codes associated with the analysed material
025Change of phase or condition
0256Adsorption, desorption, surface mass change, e.g. on biosensors
G01N 2291/0423
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
04Wave modes and trajectories
042Wave modes
0423Surface waves, e.g. Rayleigh waves, Love waves
G01N 29/022
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
022Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices
G01N 29/036
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
036by measuring frequency or resonance of acoustic waves
Applicants
  • INTA SRL [IT]/[IT]
Inventors
  • AGOSTINI, Matteo
  • CECCHINI, Marco
Agents
  • CELESTINO, Marco
Priority Data
10201900000041810.01.2019IT
Publication Language English (en)
Filing Language Italian (IT)
Designated States
Title
(EN) SENSORIZED DEVICE FOR THE ANALYSIS OF A FLUID BY MEANS OF ACOUSTIC WAVES
(FR) DISPOSITIF MUNI DE CAPTEURS POUR L'ANALYSE D'UN FLUIDE AU MOYEN D'ONDES ACOUSTIQUES
Abstract
(EN) A method for the detection of analytes within a fluid, said method comprising the steps of prearranging a sensorized device (100) comprising at least one SAW sensor (110), said or each SAW sensor (110) comprising a substrate (115) having an outer surface (IIS') comprising at least one piezoelectric portion, at least one emitting interdigital transducer (111) arranged on said piezoelectric portion of said outer surface (115'), said emitting interdigital transducer (111) arranged to emit a surface acoustic wave in response to an input electric signal, at least one reflector electrode (112) arranged on said outer surface (115'), said reflector electrode (112) arranged to reflect said acoustic wave towards said emitting interdigital transducer (111). There are then the steps of adsorbing a plurality of probe molecules on said outer surface (IIS') of said substrate (115) and/or on said or each emitting interdigital transducer (111) and/or on said or each reflector electrode (112), sending n input electric signals, having respective frequencies fi, with i = 1, to said emitting interdigital transducer (111) and subsequent transmission by said or each emitting interdigital transducer (111) of at least one surface acoustic wave, reflecting by said or each reflector electrode (112) of said or each surface acoustic wave emitted, identifying, between said n frequencies /j of said input electric signals, at least one resonance frequency fr corresponding to the generation of a surface acoustic wave having power exceeding a predetermined threshold PT, conveying said fluid on said outer surface (115') and/or on said or each emitting interdigital transducer (111) and/or on said or each reflector electrode (112), removal of said fluid by said outer surface (115') and/or by said or each emitting interdigital transducer (111) and/or by said or each reflector electrode (112), verifying a possible change of value of at least one resonance frequency fr previously identified.
(FR) L'invention concerne un procédé de détection d'analytes dans un fluide, ledit procédé comprenant les étapes consistant à préagencer un dispositif muni de capteurs (100) comprenant au moins un capteur à ondes acoustiques (110), ledit ou chaque capteur à ondes acoustiques (110) comportant un substrat (115) possédant une surface externe (IIS') comprenant au moins une partie piézoélectrique, au moins un transducteur interdigital d'émission (111) disposé sur ladite partie piézoélectrique de ladite surface externe (115'), ledit transducteur interdigital d'émission (111) étant conçu pour émettre une onde acoustique de surface en réponse à un signal électrique d'entrée, au moins une électrode réfléchissante (112) disposée sur ladite surface externe (115'), ladite électrode réfléchissante (112) étant agencée pour réfléchir ladite onde acoustique vers ledit transducteur interdigital d'émission (111). Ledit procédé comprend ensuite les étapes consistant à adsorber une pluralité de molécules sondes sur ladite surface externe (IIS') dudit substrat (115) et/ou sur ledit ou chaque transducteur interdigital d'émission (111) et/ou sur ladite ou chaque électrode réfléchissante (112), envoyer n signaux électriques d'entrée, présentant des fréquences respectives fi, avec i = 1, audit transducteur interdigital d'émission (111), cela étant suivi de la transmission par ledit ou chaque transducteur interdigital d'émission (111) d'au moins une onde acoustique de surface, puis de la réflexion, par ladite ou chaque électrode réfléchissante (112), de ladite ou de chaque onde acoustique de surface émise, de l'identification, entre lesdites n fréquences fi desdits signaux électriques d'entrée, d'au moins une fréquence de résonance fr correspondant à la génération d'une onde acoustique de surface présentant une puissance dépassant un seuil prédéterminé PT, de l'acheminement dudit fluide jusqu'à ladite surface externe (115') et/ou jusqu'audit ou jusqu'à chaque transducteur interdigital d'émission (111) et/ou jusqu'à ladite ou jusqu'à chaque électrode réfléchissante (112), de l'élimination dudit fluide par ladite surface externe (115') et/ou par ledit ou chaque transducteur interdigital d'émission (111) et/ou par ladite ou chaque électrode réfléchissante (112) et de la vérification d'un éventuel changement de valeur d'au moins une fréquence de résonance fr précédemment identifiée.
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