Behavior of average standing-wave ratio for scattering by one-dimensional strong random inhomogeneities

1994 ◽  
Vol 36 (3-4) ◽  
pp. 165-174
Author(s):  
V. Yu. Andreev
Keyword(s):  
Standing Wave ◽  
One Dimensional

One-dimensional motion of slow atoms in a standing-wave field

1990 ◽  
Vol 42 (7) ◽  
pp. 4032-4036 ◽  
Author(s):  
Y. Z. Wang ◽  
W. Q. Cai ◽  
Y. D. Cheng ◽  
L. Liu ◽  
Y. Luo ◽  
...  
Keyword(s):  
Wave Field ◽  
Standing Wave ◽  
One Dimensional ◽  
Standing Wave Field

On the Steady-State Response of a One-Dimensional Yielding Continuum

1970 ◽  
Vol 37 (3) ◽  
pp. 720-727 ◽  
Author(s):  
W. D. Iwan
Keyword(s):  
Steady State ◽  
Standing Wave ◽  
Steady State Response ◽  
Higher Modes ◽  
One Dimensional ◽  
State Response ◽  
Wave Response ◽  
Response Modes ◽  
Damped Systems

The steady-state or standing wave response of a bounded one-dimensional yielding continuum is investigated using an approximate analytic technique. Details of the nature of the fundamental and higher modes of response are presented. It is found that the effective damping in the higher response modes may be quite small compared to that of linear viscous damped systems.

scholarly journals Design and Calibration Tests of an Active Sound Intensity Probe

2008 ◽  
Vol 2008 ◽  
pp. 1-8
Author(s):  
Thomas Kletschkowski ◽  
Delf Sachau
Keyword(s):  
Standing Wave ◽  
Free Field ◽  
Sound Intensity ◽  
Adaptive Controller ◽  
The Novel ◽  
Test Bed ◽  
One Dimensional ◽  
Standing Wave Field ◽  
Cross Spectral Density ◽  
Radiated Sound

The paper presents an active sound intensity probe that can be used for sound source localization in standing wave fields. The probe consists of a sound hard tube that is terminated by a loudspeaker and an integrated pair of microphones. The microphones are used to decompose the standing wave field inside the tube into its incident and reflected part. The latter is cancelled by an adaptive controller that calculates proper driving signals for the loudspeaker. If the open end of the actively controlled tube is placed close to a vibrating surface, the radiated sound intensity can be determined by measuring the cross spectral density between the two microphones. A one-dimensional free field can be realized effectively, as first experiments performed on a simplified test bed have shown. Further tests proved that a prototype of the novel sound intensity probe can be calibrated.

scholarly journals Numerical analysis of a standing-wave thermoacoustic refrigerator by one-dimensional simulation

2019 ◽  
Vol 85 (869) ◽  
pp. 18-00268-18-00268
Author(s):  
Rin IRIE ◽  
Sotaro IWAMOTO ◽  
Ken KAKITA ◽  
Seiichi TANAKA ◽  
Seiji FUJIWARA
Keyword(s):  
Numerical Analysis ◽  
Standing Wave ◽  
One Dimensional ◽  
Dimensional Simulation ◽  
Thermoacoustic Refrigerator

THIN FILM ELECTRON INTERFEROMETRY

1991 ◽  
Vol 05 (21) ◽  
pp. 1387-1405 ◽  
Author(s):  
Y. R. WANG ◽  
J. A. KUBBY ◽  
W. J. GREENE
Keyword(s):  
Thin Film ◽  
Electron Transport ◽  
Standing Wave ◽  
Structural Integrity ◽  
Sample Surface ◽  
Wave Spectra ◽  
Dimensional Model ◽  
Heteroepitaxial Growth ◽  
One Dimensional ◽  
Buried Interfaces

Electron transport through thin overlayers of tin grown on a silicon substrate, and stacking-fault contrast in topographic and conductivity images of Si (111) – 7 × 7 are investigated. Resonances that depend on structural integrity of the overlayer are observed in the conductivity images, and are interpreted as consequences of electron standing-wave formation within the overlayer. The experimental spectra are analyzed using a one-dimensional model which has scattering potentials located at the sample surface and at the overlayer-substrate interface. The agreement between experiment and theory demonstrates that electron-standing wave spectra, in conjunction with bias-dependent topographic and conductivity images, are useful for probing details of buried interfaces formed by surface reconstruction and in heteroepitaxial growth.

Two Dimensional Acoustic Manipulation in Microfluidic Channels

2011 ◽  
Vol 117-119 ◽  
pp. 624-632
Author(s):  
Lin Xu ◽  
Adrian Neild
Keyword(s):  
Standing Wave ◽  
Acoustic Radiation ◽  
Standing Waves ◽  
Microfluidic Channels ◽  
Two Dimensional ◽  
Positioning Control ◽  
One Dimensional ◽  
Pressure Fields ◽  
Radiation Forces ◽  
Solid Walls

Acoustic radiation forces can be used to collect particles within microfluidic systems. The standard way of doing this is to excite a one-dimensional standing wave between a pair of solid walls; the particles will then typically collect at the pressure nodes. Higher degrees of positioning control can be achieved by excitation of additional orthogonal one-dimensional standing waves; this usually requires further walled constraints (two-dimensional collection for example requiring a chamber rather than a channel). In this work we examine methods of exciting two-dimensional fields in a channel using a single transducer as well as the use of pressure fields which are not one-dimensional in nature and the advantages they can offer.

Sign in / Sign up

Export Citation Format

Share Document