focusing transducer

См. также в других словарях:

• Self-focusing transducers — Acoustic waves emitted by ultrasonics transducer crystals exhibit a property known as self focusing (or natural focusing ). Note that this is distinct from the electronically controlled focusing employed in diagnostic ultrasound devices which… …   Wikipedia

• фокусирующий пьезоэлемент — Пьезоэлемент, имеющий по крайней мере одну вогнутую поверхность и используемый для фокусировки акустического поля. [Система неразрушающего контроля. Виды (методы) и технология неразрушающего контроля. Термины и определения (справочное пособие).… …   Справочник технического переводчика

• High-intensity focused ultrasound — Contents 1 Theory 2 Aiming 3 How HIFU works 4 Method of use …   Wikipedia

• Medical ultrasonography — This article is about using ultrasound to image the human body. For imaging of animals in research, see Preclinical imaging. Sonography redirects here. For the tactile alphabet called sonography , see Night writing. Medical ultrasonography… …   Wikipedia

• Time Reversal Signal Processing — is a technique for focusing waves. A Time Reversal Mirror (TRM) is a device that can focus waves using the time reversal method. TRMs are also known as time reversal mirror arrays, as they are usually arrays of transducers, but they do not have… …   Wikipedia

• Acoustic microscopy — Introduction = Acoustic microscopes employ very high or ultra high frequency ultrasound. These microscopes operate nondestructively and penetrate most solid materials to make visible images of internal features, including defects such as cracks,… …   Wikipedia

• Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …   Wikipedia

• microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

• ultrasonics — /ul treuh son iks/, n. (used with a sing. v.) the branch of science that deals with the effects of sound waves above human perception. [1930 35; see ULTRASONIC, ICS] * * * Vibrational or stress waves in elastic media that have a frequency above… …   Universalium

• Piezoelectricity — is the ability of some materials (notably crystals and certain ceramics, including bone) to generate an electric potentialPrinciples of Instrumental Analysis. 6th Edition, 2007. Skoog, Holler, and Crouch. Chapter 1, Sec. 1C 4, Pg. 9.] in response …   Wikipedia

• photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …   Universalium