Comparisons of Polymer/Gas Partition Coefficients Calculated from Responses of Thickness Shear Mode and Surface Acoustic Wave Vapor Sensors

1998 ◽  
Vol 70 (1) ◽  
pp. 199-203 ◽  
Author(s):  
Jay W. Grate ◽  
Steven N. Kaganove ◽  
Venkat R. Bhethanabotla
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Partition Coefficients ◽  
Shear Mode ◽  
Thickness Shear Mode ◽  
Vapor Sensors ◽  
Thickness Shear

Performances of Mass-Sensitive Devices for Gas Sensing:  Thickness Shear Mode and Surface Acoustic Wave Transducers

1996 ◽  
Vol 68 (13) ◽  
pp. 2210-2218 ◽  
Author(s):  
K. Bodenhöfer ◽  
A. Hierlemann ◽  
G. Noetzel ◽  
U. Weimar ◽  
W. Göpel
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Gas Sensing ◽  
Shear Mode ◽  
Thickness Shear Mode ◽  
Thickness Shear

Poly N-(2-cyanoethyl)pyrrole as a selective film for the thickness-shear-mode acoustic wave sensor

1995 ◽  
Vol 73 (9) ◽  
pp. 1427-1435 ◽  
Author(s):  
Zhiping Deng ◽  
David C. Stone ◽  
Michael Thompson
Keyword(s):  
Acoustic Wave ◽  
Photoelectron Spectroscopy ◽  
Electrochemical Polymerization ◽  
Shear Mode ◽  
Polymeric Coatings ◽  
Thickness Shear Mode ◽  
X Ray ◽  
Acoustic Wave Sensor ◽  
Polypyrrole Film ◽  
Thickness Shear

Poly N-(2-cyanoethyl)pyrrole films have been synthesized by electrochemical polymerization and characterized by cyclic voltammetry, scanning electron microscopy, and X-ray photoelectron spectroscopy. Polymeric coatings prepared on the surface of a thickness-shear-mode acoustic wave sensor have been used to examine response selectivity to a number of gas-phase probe molecules. The responses of the poly N-(2-cyanoethyl)pyrrole based sensor are compared with the parent polypyrrole device and rationalized in terms of the molecular interactions between probes and polymer films. The polar cyano functionality enhances interactions with analytes such as acetonitrile. Keywords: gas sensor, thickness-shear-mode acoustic wave sensor, poly N-(2-cyanoethyl)pyrrole film, polypyrrole film, conducting polymer.

Acoustic wave flow sensor using quartz thickness shear mode resonator

2009 ◽  
Vol 56 (9) ◽  
pp. 1945-1954 ◽  
Author(s):  
Lifeng Qin ◽  
Zijing Zeng ◽  
Hongbin Cheng ◽  
Qing-ming Wang
Keyword(s):  
Acoustic Wave ◽  
Flow Sensor ◽  
Wave Flow ◽  
Shear Mode ◽  
Thickness Shear Mode ◽  
Thickness Shear ◽  
Mode Resonator

Interfacial properties and the response of the thickness-shear-mode acoustic wave sensor in liquids

Langmuir ◽  
1993 ◽  
Vol 9 (3) ◽  
pp. 802-811 ◽  
Author(s):  
Mengsu Yang ◽  
Michael Thompson ◽  
Wendy C. Duncan-Hewitt
Keyword(s):  
Acoustic Wave ◽  
Interfacial Properties ◽  
Shear Mode ◽  
Thickness Shear Mode ◽  
Acoustic Wave Sensor ◽  
Thickness Shear

scholarly journals Radiation-Activated Pre-Differentiated Retinal Tissue Monitored by Acoustic Wave Biosensor

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2628
Author(s):  
Alin Cheran ◽  
Michael Thompson
Keyword(s):  
Light Intensity ◽  
Acoustic Wave ◽  
High Light Intensity ◽  
Shear Mode ◽  
Bathing Solution ◽  
Acoustic Parameters ◽  
Thickness Shear Mode ◽  
Retinal Tissue ◽  
Acoustic Wave Biosensor ◽  
Thickness Shear

A thickness-shear mode acoustic wave biosensor operated within a flow-through system was used to examine the response of mouse retinal tissue to radiation. Control experiments conducted with respect to exposure of the bare gold electrodes of the device under various conditions of light intensity and bathing solution yielded reversible changes in resonant frequency (Fs) and motional resistance (Rm). The magnitude of transient changes was proportional to light intensity, but independent of solution type. These alterations in acoustic parameters were ascribed to acoustic coupling phenomena at the electrode-to-liquid interface. Pre-differentiated retina from mouse samples deposited on the thickness shear mode (TSM) electrode exposed to a high light intensity condition also exhibited reversible changes in both Fs and Rm, compared to control experiments involving a coating used to attach the tissue to the electrode. In this case, the radiation-instigated reversible responses for both acoustic parameters exhibited a reduction in magnitude. The changes are ascribed to the alteration in viscoelasticity of the retinal matrix on the TSM electrode surface. The precise biophysical mechanism responsible for the changes in Fs and Rm remains a challenge, given the complex make up of retinal tissue.

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