scholarly journals Acoustic properties and density of polyurea at pressure up to 13.5 GPa through Brillouin scattering spectroscopy

2018 ◽  
Vol 123 (19) ◽  
pp. 195102 ◽  
Author(s):  
T. C. Ransom ◽  
Muhtar Ahart ◽  
Russell J. Hemley ◽  
C. M. Roland
Keyword(s):  
Brillouin Scattering ◽  
Acoustic Properties

Brillouin Scattering Study on the Opto-Acoustic Properties of Thin Piezoelectric Polymer Films

2004 ◽  
Vol 43 (5B) ◽  
pp. 2916-2919 ◽  
Author(s):  
Shin-ichi Tomohiro ◽  
Mami Matsukawa ◽  
Takahiko Otani ◽  
Norikazu Ohtori
Keyword(s):  
Polymer Films ◽  
Brillouin Scattering ◽  
Acoustic Properties ◽  
Piezoelectric Polymer ◽  
Scattering Study

Dynamic Rigidity Percolation in AOT Micelles and Microemulsions

1989 ◽  
Vol 177 ◽  
Author(s):  
L. Ye ◽  
D. A. Weitz ◽  
Ping Sheng ◽  
J. S. Huang
Keyword(s):  
Frequency Dependence ◽  
Volume Fraction ◽  
Brillouin Scattering ◽  
Viscoelastic Behavior ◽  
Water Concentration ◽  
Hydrocarbon Chain ◽  
Acoustic Properties ◽  
Pronounced Increase ◽  
Hydrocarbon Chain Length ◽  
Consistent Picture

ABSTRACTWe study the acoustic properties of AOT micelles and microemulsions by measuring the velocity of sound as a function of droplet volume fraction and of frequency, using Brillouin scattering and ultrasonic techniques. These weakly attractive interparticle interactions lead to the formation of short–lived networks of droplets, which can support shear and result in a pronounced increase in the speed of sound at high frequencies. These networks do not persist for sufficiently long times to affect the sound velocity at lower frequencies. The increased rigidity due to the networks exhibits a percolation behavior with volume fraction, while the frequency dependence of the interactions depends on hydrocarbon chain length of the solvent. Increasing the water concentration results in an increase in interaction energy, but a decrease in the intrinsic droplet rigidity, which affects the magnitude and frequency dependence of the contribution of the microemulsion networks to the elastic constant of the suspension. A consistent picture of the viscoelastic behavior of these suspensions is obtained.

BRILLOUIN-SCATTERING DETERMINATION OF THE ACOUSTIC PROPERTIES OF POLYMERS AT HIGH PRESSURE

2008 ◽  
Author(s):  
D. M. Dattelbaum ◽  
L. L. Stevens ◽  
E. B. Orler ◽  
M. Ahart ◽  
R. J. Hemley ◽  
...  
Keyword(s):  
High Pressure ◽  
Brillouin Scattering ◽  
Acoustic Properties

scholarly journals Stimulated Brillouin gain spectroscopy in a confined spatio-temporal domain (30 μm, 170 ns)

2020 ◽  
Vol 89 (3) ◽  
pp. 30701
Author(s):  
Lionel Djadaojee ◽  
Albane Douillet ◽  
Jules Grucker
Keyword(s):  
Brillouin Scattering ◽  
Test Sample ◽  
Gain Spectrum ◽  
Acoustic Properties ◽  
Transient Phenomena ◽  
Temporal Domain ◽  
Spatio Temporal ◽  
Brillouin Gain ◽  
Stimulated Brillouin ◽  
Different Sources

The Brillouin gain spectrum of a test sample (liquid acetone at room temperature) on scales simultaneously confined in space (~30 μm) and time (~170 ns) is reported. This is done using a pulsed stimulated Brillouin scattering gain spectrometer in a θ ≈ 90° crossing beam configuration. After having identified and corrected for different sources of background signals, we obtained a Brillouin gain spectrum allowing an accurate measurement (MHz range) of the Brillouin frequency (few GHz). This is of interest for probing acoustic properties of transparent media subjected to repetitive fast transient phenomena on small length scales.

Micro-Brillouin Scattering Study of Acoustic Properties of Protein Crystals

2008 ◽  
Author(s):  
Eiji Hashimoto ◽  
Yuichiro Aoki ◽  
Yuichi Seshimo ◽  
Keita Sasanuma ◽  
Yuji Ike ◽  
...  
Keyword(s):  
Brillouin Scattering ◽  
Acoustic Properties ◽  
Protein Crystals ◽  
Scattering Study

Acoustic properties of PLZT ceramics studied by Brillouin scattering

2006 ◽  
Vol 17 (2-4) ◽  
pp. 515-518 ◽  
Author(s):  
Jae-Hyeon Ko ◽  
Do Han Kim ◽  
Seiji Kojima
Keyword(s):  
Brillouin Scattering ◽  
Acoustic Properties
Sign in / Sign up

Export Citation Format

Share Document