Acoustic phase velocity measurements with nanometer resolution by scanning acoustic force microscopy

1998 ◽  
Vol 66 (7) ◽  
pp. S223-S226 ◽  
Author(s):  
E. Chilla ◽  
T. Hesjedal ◽  
H.-J. Fröhlich
Keyword(s):  
Phase Velocity ◽  
Velocity Measurements ◽  
Nanometer Resolution ◽  
Force Microscopy ◽  
Acoustic Phase

Acoustic Phase Velocity Measurements along General Directions in Non-Isotropic Crystals. II. Layer Modes for Thin Films

1971 ◽  
Vol 49 (12) ◽  
pp. 1606-1610 ◽  
Author(s):  
S. L. McBride ◽  
G. W. Farnell
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Lithium Niobate ◽  
Phase Velocity ◽  
Test Specimen ◽  
Gold Films ◽  
Velocity Measurements ◽  
Elastic Surface ◽  
Film Substrate ◽  
Acoustic Phase

The usefulness of the immersion–reflection technique for the measurement of the angular dependence of the dispersion curves for elastic surface waves in anisotropic thin-film, substrate combinations is demonstrated. The example chosen consists of gold films on a substrate of Y-cut lithium niobate, the latter being both highly anisotropic and piezoelectric. The velocity accuracy of the measurements is about ±0.3% and the frequency of operation is limited by the attenuation in the liquid medium in which the test specimen is immersed.

Acoustic Phase Velocity Measurements along General Directions in Non-Isotropic Crystals. I. Elastic Properties of Monoclinic K3Co(CN)6

1971 ◽  
Vol 49 (12) ◽  
pp. 1597-1605 ◽  
Author(s):  
T. H. Chou ◽  
S. L. McBride ◽  
N. Rumin
Keyword(s):  
Elastic Constants ◽  
Experimental Error ◽  
Acoustic Velocity ◽  
Acoustic Energy ◽  
Perturbation Calculation ◽  
Velocity Measurements ◽  
Phase Velocities ◽  
Low Symmetry ◽  
Acoustic Phase

The complete elastic constants tensor of monoclinic potassium cobalticyanide [K3Co(CN)6] has been determined from measured ultrasonic phase velocities. These were obtained as a function of direction in several crystal planes by measuring the acoustic energy reflection coefficient at a liquid–solid interface as a function of angle and plane of incidence. The measurements were made at 27.6 MHz in p-xylene at 21.5 °C. The elastic constants were determined using an existing perturbation method. Velocities calculated from the derived elastic constants are in agreement with the measured velocities to within experimental error and the approximations in the perturbation calculation. The usefulness of this method for the determination of the elastic constants of low symmetry crystals is thus established. The Debye temperature of K3Co(CN)6 is estimated from the results to be 290 ± 10 °K with a corresponding mean acoustic velocity of 2560 ± 80 m/s.

Nanoscale determination of phase velocity by scanning acoustic force microscopy

1997 ◽  
Vol 55 (23) ◽  
pp. 15852-15855 ◽  
Author(s):  
E. Chilla ◽  
T. Hesjedal ◽  
H. -J. Fröhlich
Keyword(s):  
Phase Velocity ◽  
Force Microscopy

scholarly journals Cellular dynamics observed at sub-nanometer resolution using atomic force microscopy

2002 ◽  
Vol 8 (S02) ◽  
pp. 892-893
Author(s):  
Tiina Lehto ◽  
Harald Janovjak ◽  
Clemens Möller ◽  
Fedor Severin ◽  
Marta Miaczynska ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Cellular Dynamics ◽  
Nanometer Resolution ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Surface Wave Tomography of the Alps Using Ambient-Noise and Earthquake Phase Velocity Measurements

2018 ◽  
Vol 123 (2) ◽  
pp. 1770-1792 ◽  
Author(s):  
Emanuel D. Kästle ◽  
A. El-Sharkawy ◽  
L. Boschi ◽  
T. Meier ◽  
C. Rosenberg ◽  
...  
Keyword(s):  
Surface Wave ◽  
Phase Velocity ◽  
Ambient Noise ◽  
Surface Wave Tomography ◽  
Velocity Measurements ◽  
Wave Tomography ◽  
The Alps
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