Nanosecond shock wave-induced surface acoustic waves and dynamic fracture at fluid-solid boundaries

The optical changes occurring in a homeotropically aligned nematic liquid crystal film when excited by surface acoustic waves have been studied. Striped domains at low acoustic intensities followed by acoustic streaming at high intensities have been observed. The increase in transparency of the oriented liquid crystal film under the action of surface acoustic waves also has been investigated. The experimental results compare favourably with the available theoretical model based on the effect of rotation of the plane of polarization.

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Generation of different types of surface acoustic waves by shock wave-Stone interaction

The Journal of the Acoustical Society of America ◽

10.1121/1.4970531 ◽

2016 ◽

Vol 140 (4) ◽

pp. 3307-3307

Author(s):

Ying Zhang ◽

Chen Yang ◽

Pei Zhong

Keyword(s):

Shock Wave ◽

Acoustic Waves ◽

Surface Acoustic Waves ◽

Different Types

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Surface Acoustic Wave-Induced Electroluminescence Intensity Oscillation in Planar Light-Emitting Devices

MRS Proceedings ◽

10.1557/proc-869-d4.3 ◽

2005 ◽

Vol 869 ◽

Cited By ~ 1

Author(s):

Marco Cecchini ◽

Vincenzo Piazza ◽

Fabio Beltram ◽

Martin Ward ◽

Andrew Shields ◽

...

Keyword(s):

Acoustic Waves ◽

Surface Acoustic Waves ◽

Photon Counting ◽

Type Region ◽

Light Emitting ◽

Intensity Oscillation ◽

Light Emitting Devices ◽

Electroluminescence Intensity ◽

P Type ◽

Wave Induced

AbstractElectroluminescence (EL) emission controlled by means of surface acoustic waves (SAWs) in planar light-emitting diodes (pLEDs) is demonstrated. Interdigital transducers (IDTs) for SAW generation were integrated onto pLEDs fabricated following a scheme compatible with SAW propagation [1]. EL in presence of SAW was studied by time-correlated photon-counting techniques. We found intensity oscillation at the SAW frequency (˜1 GHz) demonstrating electron injection into the p-type region synchronous with the SAW wavefronts.

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Characterization of RF Sputtered ZnO Piezoelectric Films Using Transmission Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100114050 ◽

1975 ◽

Vol 33 ◽

pp. 86-87

Author(s):

Kemining W. Yeh ◽

Richard S. Muller ◽

Wei-Kuo Wu ◽

Jack Washburn

Keyword(s):

Integrated Circuit ◽

Acoustic Waves ◽

New Technology ◽

Surface Acoustic Waves ◽

Electromechanical Properties ◽

Leading Role ◽

Saw Devices ◽

Transmission Electron ◽

High Degree

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.

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