Results 251 to 260 of about 15,077 (301)

Hypersonic acoustic wave control via stealthy hyperuniform phononic nanostructures. [PDF]

Sci Adv
Diego M, Hardouin J, Mazevet-Schargrod G, Pirro M, Kim B, Anufriev R, Nomura M.   +6 more
europepmc   +1 more source

Effect of HIFU frequency on gold removal efficiency from e-waste. [PDF]

Sci Rep
Pudas T, Holmström A, Hyvönen J, Sillanpää T, Mäkinen J, Weber M, Mizohata K, Kuronen A, Kotiaho T, Haeggström E, Salmi A.   +10 more
europepmc   +1 more source

Multi-photon, label-free photoacoustic and optical imaging of NADH in brain cells. [PDF]

Light Sci Appl
Osaki T, Lee WD, Zhang X, Zubajlo RE, Balcells-Camps M, Edelman ER, Anthony BW, Sur M, So PTC.   +8 more
europepmc   +1 more source

Science and Engineering Careers in the United States: An Analysis of Markets and Employment [PDF]

Cyrus C. M. Mody
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Scanning acoustic air microscope

Ultrasonics, 1996
A new type of focusing transducer, which works efficiently in air, has been developed and employed in a phase sensitive scanning acoustic microscope (PSAM) with air as a coupling medium. The transducers contain a matching layer, which diminishes the insertion loss of the energy.
M Schubert, W Grill
exaly   +2 more sources

Scanning acoustic force microscope detection of SAWs

Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, 1994
We present a novel method for the investigation of surface acoustic wave (SAW) fields with nanometer resolution by a scanning acoustic force microscope (SAFM). The detection of ultrasound by a force microscope is connected with the nonlinear dependence of the force on the distance between the tip and the surface.
null Chilla, null Hesjedal, null Frohlich   +2 more
openaire   +2 more sources

Scanning acoustic microscope

The Journal of the Acoustical Society of America, 1987
An acoustic microscope wherein an ultrasonic beam is projected on a sample through a propagating medium by an ultrasonic transducer having a short focus, reflected acoustic waves from the sample are detected by the transducer, and a microscopic image of the sample is obtained by scanning the sample mechanically in two dimensions, comprises a cover ...
Hiroshi Kanda, Isao Ishikawa, Kageyoshi Katakura, Chitose Nakaya   +3 more
openaire   +1 more source

Acoustic microscope—scanning version

Applied Physics Letters, 1974
This letter reports the development of a mechanically scanned acoustic microscope showing 10-μm resolution. Using single-surface lenses an acoustic beam is focused with negligible spherical aberration in a water cell. The image is formed by mechanically scanning an object through this focused beam in a raster pattern. Transmitted power is detected with
R. A. Lemons, C. F. Quate
openaire   +1 more source

The Caries Lesion Under the Scanning Acoustic Microscope

Advances in Dental Research, 1987
The scanning acoustic microscope can be used to obtain images of caries lesions in longitudinal sections of human enamel. The contrast in the acoustic images is unique in that it arises from changes in the elastic properties across the surface of a specimen.
S D, Peck, G A, Briggs
openaire   +2 more sources

Fast scanning mode and its realization in a scanning acoustic microscope

Review of Scientific Instruments, 2012
The scanning speed of the two-dimensional stage dominates the efficiency of mechanical scanning measurement systems. This paper focused on a detailed scanning time analysis of conventional raster and spiral scan modes and then proposed two fast alternative scanning modes.
Bing-Feng, Ju, Xiaolong, Bai, Jian, Chen
openaire   +2 more sources