Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Patrick Alnot"'
Autor:
Pascal Nicolay, H. Kambara, Patrick Alnot, K. J. Singh, Frederic Sarry, L. Bouvot, Omar Elmazria
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 57:684-689
A new kind of surface acoustic wave (SAW) sensor has been developed to measure sub-atmospheric pressure below 100 mtorr with accuracy better than 0.1 mtorr. It provides an efficient measuring solution in the pressure range inaccessible in past by con
Publikováno v:
IEEE Sensors Journal. 8:1399-1403
In this paper, the layered structure ZnO/Quartz (90deg rotated ST-cut) is investigated theoretically and experimentally. Both waves, Rayleigh and Love, are analyzed. Dispersion curves of phase velocities, electromechanical coupling coefficient (K 2)
Publikováno v:
La Houille Blanche. 93:64-69
Dans ce travail, nous utilisons l'interaction SAW/liquide afin d'echauffer des microgouttes (10 μl). Le dispositif SAW a ete realise sur un substrat piezoelectrique de niobate de lithium coupe Y+128°, sachant que ce dispositif fonctionne a une freq
Publikováno v:
Integrated Ferroelectrics. 91:119-128
AlN films with c-axis oriented perpendicular to the surface were deposited on silicon substrates by reactive RF magnetron sputtering method, at various temperatures (without heating −400°C). The structural, morphological and optical properties of
Publikováno v:
IEEE Sensors Journal. 7:336-341
Love wave structures are encouraging devices for sensing applications in gaseous or liquid media because of their high sensitivity. In this paper, we first investigate basic properties of a ZnO/quartz Love wave device by the use of theoretical consid
Publikováno v:
Sensors and Actuators B: Chemical. 121:372-378
Film bulk acoustic resonators (FBAR) vibrating in shear mode and operating at around 830 MHz have been fabricated. They were tested in air and water–glycerol solutions. With a sensitivity of 1 kHz cm2/ng, these devices are attractive for gravimetri
Publikováno v:
Ultrasonics. 45:100-103
We demonstrate the third harmonic generation in a ZnO/Si layered structure to obtain high frequency SAW devices. This configuration eliminates the need of high lithography resolution and allows easy integration of such devices and electronics on the
Publikováno v:
Sensors and Actuators B: Chemical. 118:380-385
Microfluidic systems can be implemented for miniaturization of chemical and biological processes on a sub-millimeter scale. In this study, surface acoustic waves (SAW) were used to actuate small droplet (from 2 to 20 μl) on planar surface of a piezo
Autor:
R. Bactavatchalou, D. Schaefer, Jörg Baller, Patrick Alnot, Berndt Wetzel, Wulff Possart, Roland Sanctuary, Jan-Kristian Krüger
Publikováno v:
Thermochimica Acta. 445:111-115
Thermal investigations on two selected model-nanocomposites have been made. They differ with regard to the type of the anorganic nanoparticles that have been filled into an organic oligomer matrix. The properties of nanocomposites may vary between th
Autor:
J. Mainka, Ulrich Müller, Didier Rouxel, Wulff Possart, R. Bactavatchalou, Ch. Gilow, Patrick Alnot, Roland Sanctuary, A. Tschöpe, B. Wetzel, Jan-Kristian Krüger
Publikováno v:
Journal de Physique IV (Proceedings). 129:45-49
From the structural point of view a simple Cauchy relation is not expected to hold for isotropic materials. Such a Cauchy relation would imply the reduction of independent elastic stiffness constants for the isotropic state from two to one. However,