Elucidation of Pre-transional Phenomena on Molecular Aggregates by Terahertz Spectrosocpy
| Project/Area Number |
25871138
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
SUZUKI Hal 独立行政法人理化学研究所, 光量子工学研究領域, 基礎科学特別研究員 (50633559)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 分子凝集相 / テラヘルツ分光 / 高強度テラヘルツ波照射 / 相転移 / シクロヘキサノール |
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| Outline of Final Research Achievements |
In this study, phase transitions of molecular aggregated states were investigated by using techniques of terahertz (THz) spectroscopy and high-power THz-wave generation. We investigated structural transition of nylon-6 by THz spectroscopy, and revealed the changes in low-frequency molecular vibrations in relation to the inter-chain distances. Kinetics of polymorphic transitions of cyclohexanol was also investigated by THz spectroscopy, and the dimension of phase growth was revealed in relation to geometry of the hydrogen bonding network. We also explored the possibility of inducing phase transitions by irradiating high-power THz-wave, and found that the shape of liquid crystalline material in nematic phase can significantly be changed by the irradiation.
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Report
(3 results)
Research Products
(23 results)
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[Presentation] THz Spectroscopy and waveform control2013
Author(s)
C. Otani, H. Hoshina, S. Ishii, A. Hayashi, H. Suzuki, K. Uematsu, K. Maki, Y. Morisawa, Y. Ozaki, T. Uchiyama
Organizer
The 5th International Workshop on Optical Terahertz Science and Technology (OTST 2013)
Place of Presentation
Kyoto, Japan
Related Report
Invited
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[Presentation] Sol-Gel Transition Of Supramolecular Gels Observed By Terahertz Spectroscopy2013
Author(s)
H. Hoshina, A. Ozaki, Y. Itagaki, S. Yajima, H. Suzuki, S. Ishii, M. Ishida, T. Uchiyama, K. Kimura, C. Otani
Organizer
38th International Conference of Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2013)
Place of Presentation
Maintz, Germany
Related Report
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[Presentation] Study on Temperature-dependent Structural Changes due to Intermolecular Interaction of Nylon 6 by using Low-frequency Raman, Terahertz Spectroscopies and Quantum Chemical Calculation2013
Author(s)
E. Onishi, H. Sato, S. Yamamoto, K. Raghunatha Reddy, D. Ishikawa, S. Ishii, H. Suzuki, H. Hoshina, Y. Morisawa, Y. Ozaki
Organizer
Seventh International Conference on Advanced Vibrational Spectroscopy (ICAVS-7)
Place of Presentation
Kobe, Japan
Related Report
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