Results 241 to 250 of about 229,260 (299)
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BAEC adhesion analysis using Thickness Shear Mode sensor
2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005A Thickness Shear Mode (TSM) sensor of which acoustic shear wave has a nano-scale penetration depth was used in detecting biological activities of living cells. The initial cell adhesion process was characterized by analyzing multi-harmonic responses of the TSM sensor. A suspension of bovine aortic endothelial cells (BAECs) was placed on the TSM sensor,
S, Hong, E, Ergezen, K, Barbee, R, Lec
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A dual-mode thickness-shear quartz pressure sensor
IEEE 1991 Ultrasonics Symposium, 1993The development of a dual-mode thickness-shear quartz pressure sensor to meet the demanding performance requirements of oil-field applications is discussed. The objective was to develop a sensor with an operating pressure range of 0-103.42 MPa (0.15 000 lb/in(2)), a temperature range of -10 to +175 degrees C, a pressure calibration accuracy of 6894.8 ...
R J, Besson +5 more
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Electrochemistry of Zeolites on Thickness Shear Mode Oscillators
The Journal of Physical Chemistry B, 2005This paper describes electrochemical studies of thickness shear mode (TSM) acoustic wave oscillators coated with zeolites. The frequency response of gold on AT-cut 9 MHz quartz oscillators of silver-ion-exchanged zeolite-modified electrodes (ZMEs) under an electrochemical bias is interpreted.
Wei, Xiong, Mark D, Baker
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Complex loadings on thickness shear mode resonators
2010 IEEE International Ultrasonics Symposium, 2010An analytical aproach is presented to describe acoustic thickness shear mode resonators in the full frequency range, including all ovetones. The absolute value of loadings with complex properties (e. g. complex viscosity or shear modulus) can be determined by curve fitting.
Raimund Bruenig +3 more
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Determination of complex shear modulus with thickness shear mode resonators
Journal of Physics D: Applied Physics, 1997The electrical response of polymer-coated acoustic wave sensors depends on changes in the surface mass loading and changes in viscoelastic properties of the coating material. In this paper we consider the acoustic behaviour and the electrical response of a thickness-shear mode resonator on changes in shear parameters of the coating material at its ...
Ralf Lucklum +3 more
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Thickness shear mode resonators ("mass-sensitive devices") in bioanalysis
Fresenius' Journal of Analytical Chemistry, 2000A short overview of function and experimental set-ups of acoustic wave devices is given which, in contrast to other bioanalysis techniques, are based on a mechanical transduction mechanism. The most frequently used device is the thickness shear mode resonator (TSMR), which in the last few years was intensively employed in biosensor applications.
M, Kaspar +3 more
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Thickness shear mode acoustic assay for plasminogen activators
Analytical Communications, 1998A micro version of the fibrin plate assay based on acoustic viscosity measurements is presented. The clot dissolution time was correlated with the amount of plasminogen activator in the samples assayed. The standard error observed with streptokinase (27%) was comparable with that of the rapid fibrin plate assay while a higher standard error was ...
G. L. Hayward +4 more
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Thickness shear mode vibrations in silicon bar resonators
IEEE Ultrasonics Symposium, 2005., 2006This paper demonstrates a dielectrically transduced high quality factor (Q) quarter-wave thickness shear silicon resonator. Dielectric transduction provides a κ 2 reduction in motional impedance relative to air-gap electrostatic transduction. The resonator is fabricated on the 1.8 µm thick device layer of a heavily doped SOI wafer with 68 nm thick ...
H. Chandrahalim +2 more
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Quartz thickness-shear mode pressure sensor design for enhanced sensitivity
Proceedings of International Frequency Control Symposium, 1998Companies in the oil and gas industry rely upon acquisition of accurate downhole pressure data for management of reservoir resources. Pressure data must be acquired in extreme environments present in wells, including high pressures, high temperatures, and high levels of shock and vibration.
L D, Clayton, E P, Eernisse
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