Title:
【発明の名称】化学センサ及び当該化学センサ用のコーティング
Document Type and Number:
Japanese Patent JP2003511676
Kind Code:
A
Abstract:
An acoustic wave based-chemical sensor utilizing a crystal substrate and a coating of at least two blended materials is disclosed. The blended materials comprise a combination of (a) a high glass transition temperature polymer or a material of high melting point, and (b) a low glass transition temperature polymer or a material having a low melting point. Transducers are connected to the crystal substrate to generate an alternating potential across the crystal substrate, which in turn causes the crystal to resonate due to the converse piezoelectric effect. The blended coating absorbs the analyte, thus changing the mass of the chemical sensor, and accordingly changing its resonant frequency. The transducers detect this change in resonant frequency to indicate that the analyte is present. The use of blended materials results in a thicker coating combining the preferred properties of the blend constituents, such as improved detection sensitivities, faster response times, less acoustic wave damping, and higher operational temperature ranges.
Inventors:
China, Russ
Riu, Gojun
Porter, Mark, Dee.
Riu, Gojun
Porter, Mark, Dee.
Application Number:
JP2001529007A
Publication Date:
March 25, 2003
Filing Date:
September 21, 2000
Export Citation:
Assignee:
IOWA STATE UNIVERSITY RESEARCH FOUNDATION,INC.
International Classes:
G01N33/00; B05D7/00; C09D7/12; C09D191/00; C09D201/00; G01N5/02; G01N27/00; G01N29/02; (IPC1-7): G01N5/02; B05D7/00; C09D7/12; C09D191/00; C09D201/00; G01N33/00
Attorney, Agent or Firm:
Yoshihiro Tsunoda (6 others)