BIOSENSOR BASED ON SURFACE ACOUSTIC WAVE MODE AND TEST METHOD THEREOF

WIPO Patent Application WO/2019/192125

A1

A biosensor based on a surface acoustic wave mode and a test method thereof. The biosensor comprises: a substrate (21) formed from a piezoelectric substrate or a piezoelectric material; an interdigital transducer (24); a microchannel liquid container (26) provided between an input transducer and an output transducer of the interdigital transducer (24) and used for biological reaction; and a bio-functional membrane (25) located in the microchannel liquid container (26) and used for adsorption of a liquid sample under test. When a liquid sample is under test, at least one surface acoustic wave mode for performing a microfluidic operation on and agitation of the liquid sample under test is configured in each of a sensing channel and an excitation channel of the interdigital transducer (24), and a frequency signal for analyzing a physical property of the liquid sample under test is output. In the biosensor and the test method thereof, Rayleigh surface waves are added in a direction perpendicular to the sensing channel to excite flowing and agitation of a liquid, thereby realizing a biological test function resistant to non-specific interference and capable of a rapid response.

FU CHEN (CN)
LUO JINGTING (CN)
QUAN AOJIE (CN)
FAN PING (CN)
ZHANG DONGPING (CN)
LIANG GUANGXING (CN)
ZHENG ZHUANGHAO (CN)

PCT/CN2018/100808

October 10, 2019

August 16, 2018

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UNIV SHENZHEN (CN)

G01N29/02

CN1528050A	2004-09-08
CN104056708A	2014-09-24
CN103177717A	2013-06-26
CN104870077A	2015-08-26
CN106434623A	2017-02-22
US20060029929A1	2006-02-09
US4562371A	1985-12-31
US5321331A	1994-06-14

JOHNSON INTELLECTUAL PROPERTY AGENCY (SHENZHEN) (CN)

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