نتایج جستجو برای: acoustic wave interferometry

تعداد نتایج: 299852  

Journal: :Physical review applied 2022

Atomic force microscopy is an important tool for characterizing surface acoustic waves, in particular high frequencies, where the wavelength too short to be resolved by laser interferometry. A caveat is, that cantilever deflection not equal amplitude of wave. We show, energy transfer from moving instead leads a exceeding modulation. present method accurate calibration wave amplitudes based on c...

2009
Markus Arndt Klaus Hornberger K. Hornberger

— This chapter reviews recent experiments on matter wave interferometry with large molecules. Starting from an elementary introduction to matter wave physics we discuss far-field diffraction and near-field interferometry with thermally excited many-body systems. We describe the constraints imposed by decoherence and dephasing effects, and present an outlook to the future challenges in macromole...

Ultrasonic horn with transfer of acoustic wave into an aqueous solution results in unique properties. When, transfer of sound wave into a liquid results in liquid movement in the direction of wave propagation which gradually loses its energy due to the viscous friction. This wave motion induces a flow which is known as acoustic streaming or micro-streaming. In this article, a simple innovative ...

2017
Takashi Hirose Hisashi Nakahara Takeshi Nishimura

Coda-wave interferometry is a technique to detect small seismic velocity changes using phase changes in similar waveforms from repeating natural or artificial sources. Seismic interferometry is another technique for detecting seismic velocity changes from cross-correlation functions of ambient seismic noise. We simultaneously use these two techniques to clarify seismic velocity changes at Sakur...

Javad Farzi

This paper concerns with the modeling and construction of a fifth order method for two dimensional acoustic wave equation in heterogenous media. The method is based on a standard discretization of the problem on smooth regions and a nonstandard method for nonsmooth regions. The construction of the nonstandard method is based on the special treatment of the interface using suitable jump conditio...

Journal: :Highlights of Astronomy 1989

Journal: :Highlights of Astronomy 1989

Journal: :Physical Review Letters 2010

عبداله, امیر, ملکی, مسعود,

Propagation and dispersion of acoustic waves is one of the important phenomena in physics. Acoustic-waves are nowadays widely used in a variety of applications ranging from underwater communications, identification and specification of the internal defects of materials to extracorporeal shock wave lithotripsy. Apart from application and utilization of such phenomena, study on production and pro...

Journal: :Applied optics 2005
Lei Sui Ronald A Roy Charles A DiMarzio Todd W Murray

Acousto-optic imaging in diffuse media is a dual wave-sensing technique in which an acoustic field interacts with multiply scattered laser light. The acoustic field causes a phase modulation in the optical field emanating from the interaction region, and this phase-modulated optical field carries with it information about the local optomechanical properties of the media. We report on the use of...

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