2015 Fiscal Year Final Research Report
Crystallization monitoring using higher order nonlinear Raman scattering microscopy
| Project/Area Number |
25286070
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
FUKUSHIMA Shuichiro 大阪大学, 大学院基礎工学研究科, 助教 (40362644)
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| Co-Investigator(Renkei-kenkyūsha) |
NIIOKA Hirohiko 大阪大学, 大学院基礎工学研究科, 助教 (70552074)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 結晶化 / 非線形光学 / ラマン散乱分光 / 光学顕微鏡 |
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| Outline of Final Research Achievements |
We propose to use fourth order coherent Raman scattering (FOCRS) microspectroscopy for monitoring the crystallization process. The crystallization is a process in the saturated solution. The even order nonlinear phenomenon is prohibited from the solution and provides only the information of crystallized part. FOCRS also provides the information of crystal and the molecular information by the molecular vibration.
We have developed a multiplex FOCRS microspectroscopy system using supercontinuum light generated by a photonic crystal fiber. We succeed in observation of FOCRS hyper-spectral image of a DAST (4-dimethylamino-N-methyl-4-stilbazolium tosylate) crystal in saturated solution. We also observed FOCRS and CARS (coherent anti-Stokes Raman scattering) hyper-spectral images of hydrated and anhydrated DAST crystals. CARS bands are clearly observed for both of crystals, but only the anhydrated DAST crystals show FOCRS bands. As a result, the selectivity of FOCRS was declared.
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| Free Research Field |
顕微分光
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