Comparative investigation of elastic properties in a trabecula using micro-Brillouin scattering and scanning acoustic microscopy

ABSTRACTHere, we report successful measurements by surface Brillouin scattering (SBS) and scanning acoustic microscopy (SAM) of the elastic properties of small specimens of amorphous carbon obtained from C60 under high pressure and temperature. The superhard phases of amorphous carbon were synthesized from C60 at pressure 13 – 13.5 GPa and temperature 800–900°C. Two types of acoustic waves have been detected by SBS in superhard samples: surface Rayleigh wave and bulk longitudinal wave. The longitudinal velocity (νL) in the hardest sample is slightly lower than longitudinal wave velocity in diamond in [110] direction. Simultaneous measurements of the Rayleigh and longitudinal wave velocities make it possible to determine shear and bulk elastic moduli of the specimens. Obtained elastic properties for amorphous carbon synthesized under pressure 13.5 GPa and temperature 900°C are close to those for diamond, indicating that bonds among amorphous carbon network are diamond bonding dominated.

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Measuring elastic properties of cells by evaluation of scanning acoustic microscopy V(Z) values using simplex algorithm

Biophysical Journal ◽

10.1016/s0006-3495(91)82335-9 ◽

1991 ◽

Vol 59 (6) ◽

pp. 1194-1207 ◽

Cited By ~ 55

Author(s):

T. Kundu ◽

J. Bereiter-Hahn ◽

K. Hillmann

Keyword(s):

Elastic Properties ◽

Simplex Algorithm ◽

Acoustic Microscopy ◽

Scanning Acoustic Microscopy

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Scanning Acoustic Microscope Studies of the Elastic Properties of Osteons and Osteon Lamellae

Journal of Biomechanical Engineering ◽

10.1115/1.2895537 ◽

1993 ◽

Vol 115 (4B) ◽

pp. 543-548 ◽

Cited By ~ 73

Author(s):

J. Lawrence Katz ◽

Alain Meunier

Keyword(s):

Elastic Properties ◽

Pulse Mode ◽

Acoustic Microscopy ◽

Scanning Acoustic Microscopy ◽

Structural Studies ◽

Microstructural Properties ◽

Acoustic Microscope ◽

Ultrasonic Signals ◽

Comparable Level ◽

Scanning Acoustic Microscope

Scanning acoustic microscopy (SAM) provides the means for studying the elastic properties of a material at a comparable level of resolution to that obtained by optical microscopy for structural studies. SAM is nondestructive and permits observation of properties in the interior of materials which are optically opaque. Two modes of ultrasonic signals have been used in a Model UH3 Scanning Acoustic Microscope (Olympus Co., Tokyo, Japan) as part of a continuing study of the microstructural properties of bone. The pulse mode, using a single narrow pulse in the range of 30 MHz to 100 MHz, has been used to survey the surface and interior of specimens of human and canine femoral compact cortical bone at resolutions down to approximately 30μm. To obtain more detailed information at significantly higher resolution, the burst mode, comprised of tens of sinusoids, has been used at frequencies from 200 MHz to 600 MHz. This has provided details of both human and canine single osteons (or haversion systems) and osteonic lamellae at resolutions down to approximately 1.7μm, well within the thickness of a lamella as viewed in a specimen cut transverse to the femoral axis.

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