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About: Transducer is a(n) research topic. Over the lifetime, 58151 publication(s) have been published within this topic receiving 681841 citation(s).
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07 Feb 1980-
Abstract: An ink jet recording method which comprises contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice, introducing into the electrothermal transducer an input pulse signal with its pulse width being in a range of from 01 μsec to 500 μsec, said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width, discharging and sputtering said recording liquid from said discharge orifice in the form of fine droplet in accordance with operating force developed within said operating chamber, and effecting image recording on the surface of a recording medium with the liquid droplets

1,443 citations

Toshitami Hara1
13 May 1980-
Abstract: A liquid jet recording process and liquid jet recording head are driven by heat energy generated by an electrothermal transducer. The operating conditions as to heating and others are disclosed and further desirable dimensions of the electrothermal transducer are determined by referring to various characteristics of the structure materials and others.

1,374 citations

21 Feb 1992-
Abstract: A device for ultrasonic imaging, and methods for the use an manufacture thereof, particularly of small coronary vessels. The device comprises an elongate member with a distal end that can be positioned within a small vessel of a patient's body while a proximal end is located outside the body, a transducer located at a distal end of the elongate member and operable to scan the distal coronary vessels with ultrasonic pulses, and a signal processor connected to a proximal end of the elongate member and to the transducer for generating and receiving pulses to and from the transducer. A motor may be also connected to the proximal end of the elongate member for rotating the transducer.

1,067 citations

01 Aug 1986-
Abstract: An ultrasonic apparatus for testing a material comprises an oscillator (10) which generates a selected frequency in the ultrasonic range. A transducer (1) is connected to the oscillator (10) for applying an ultrasonic signal to the material and for receiving an echo signal back from the material. A phase detector (5) receives the echo signal and an in-phase oscillator signal to generate a first display signal, and a phase detector (6) receives a quadrature signal (90° out of phase from the oscillator signal) and the echo signal to generate a second display signal. The first and second display signals are utilised in a visual display, such as a cathode ray tube (8), to generate an image. The image changes according to the phase shift between the ultrasonic signal transmitted into the material and the echo signal, which, in turn, can be utilised to determine the presence and depth of a flaw or boundary in the material.

1,017 citations

Journal ArticleDOI
Abstract: Semiconductor gas sensors utilize porous polycrystalline resistors made of semiconducting oxides. The working principle involves the receptor function played by the surface of each oxide grain and the transducer function played by each grain boundary. In addition, the utility factor of the sensing body also takes part in determining the gas response. Therefore, the concepts of sensor design are determined by considering each of these three key factors. The requirements are selection of a base oxide with high mobility of conduction electrons and satisfactory stability (transducer function), selection of a foreign receptor which enhances surface reactions or adsorption of target gas (receptor function), and fabrication of a highly porous, thin sensing body (utility factor). Recent progress in sensor design based on these factors is described.

1,000 citations

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No. of papers in the topic in previous years

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Topic's top 5 most impactful authors

Butrus T. Khuri-Yakub

129 papers, 5.3K citations

K. Kirk Shung

90 papers, 2.1K citations

Qifa Zhou

68 papers, 1.5K citations

Yongrae Roh

50 papers, 224 citations

Stephen W. Smith

42 papers, 982 citations