Hydrostaticity of poly(methyl methacrylate) loaded in a diamond anvil cell for high-pressure study
| Autor: | Kwang Joo Kim, Seonhyeop Shin, Young Ho Ko, Jae-Hyeon Ko, Min-Seok Jeong, Byoung Wan Lee |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Equation of state Materials science Hydrostatic pressure General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Poly(methyl methacrylate) Diamond anvil cell Brillouin zone chemistry.chemical_compound chemistry Brillouin scattering visual_art 0103 physical sciences visual_art.visual_art_medium General Materials Science Composite material Methyl methacrylate 0210 nano-technology Pressure gradient |
| Zdroj: | Current Applied Physics. 16:1571-1575 |
| ISSN: | 1567-1739 |
| Popis: | Hydrostaticity of poly(methyl methacrylate) (PMMA) loaded in a diamond anvil cell (DAC) was investigated up to ∼10 GPa under two conditions, i.e., with and without pressure-transmitting medium. When PMMA was loaded in the DAC without methanol-ethanol mixture, one of the most widely-used pressure-transmitting media, hydrostatic pressure condition was not fulfilled having a pressure gradient. However, the Brillouin frequency shift of the longitudinal acoustic mode of PMMA exhibited nearly the same pressure dependence regardless of the loading condition whether it was loaded with or without the methanol-ethanol mixture. This suggests that the equation of state (pressure-density relationship) of PMMA, which is calculated by using the Brillouin frequency shift, can be obtained reliably without any pressure medium at pressures less than the solidification pressure of the liquid. |
| Databáze: | OpenAIRE |
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