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Now showing items 21-30 of 143
A fast method of calculating diffraction loss between two facing transducers
(IEEE, 1988)
A fast method of calculating the diffraction loss between two facing circular ultrasonic transducers of unequal size is presented. This problem is directly applicable for minimization of diffraction loss in acoustic lens ...
Reducing anchor loss in micromechanical extensional Mode resonators
(IEEE, 2010-02)
In this work, we propose a novel method to increase
the quality factor of extensional mode micromechanical
resonators. The proposed resonator topology is suitable for
integration in a silicon-based process to fabricate ...
An efficient program for analysis of interconnect circuits
(Taylor & Francis, 1997)
A circuit simulation program using generalized asymptotic waveform evaluation techniques is introduced. The program analyses circuits with lumped and distributed components. It computes the moments at a few frequency points, ...
Simulations of switching vibrating cantilever in atomic force microscopy
(Elsevier, 2003-01-31)
We analyze the steady state tip sample interaction in atomic force microscopy by using an electrical circuit simulator. The phase shift between the cantilever excitation and tip, and the amplitude versus distance curves ...
Anisotropy sensitivity of an acoustic lens with slit aperture
(IEEE, 1993)
A conventional spherical acoustic lens is modified by restricting its aperture in the form of a slit to provide directional sensitivity. The spacing between the two parallel absorbing sheets forming the slit is adjustable ...
Enhanced higher-harmonic imaging in tapping-mode atomic force microscopy
(AIP, 2005)
Higher-harmonics generation in a tapping-mode atomic force microscope is a consequence of the nonlinear tip-sample interaction force. The higher harmonics contain important information about the materials’ nanomechanical ...
Equivalent circuit-based analysis of CMUT cell dynamics in arrays
(IEEE, 2013)
Capacitive micromachined ultrasonic transducers (CMUTs) are usually composed of large arrays of closely packed cells. In this work, we use an equivalent circuit model to analyze CMUT arrays with multiple cells. We study ...
X-ray photoelectron spectroscopy for resistance-capacitance measurements of surface structures
(AIP Publishing, 2005-04-29)
In x-ray photoemission measurements, differential charging causes the measured binding energy difference between the Si 2p of the oxide and the silicon substrate to vary nonlinearly as a function of the applied external ...
Dual integrated actuators for extended range high speed atomic force microscopy
(A I P Publishing LLC, 1999-09-13)
A flexible system for increasing the throughput of the atomic force microscope without sacrificing imaging range is presented. The system is based on a nested feedback loop which controls a micromachined cantilever that ...
BilRC: an execution triggered coarse grained reconfigurable architecture
(IEEE, 2013-07)
We present Bilkent reconfigurable computer
(BilRC), a new coarse-grained reconfigurable architecture
(CGRA) employing an execution-triggering mechanism. A control
data flow graph language is presented for mapping the ...