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| == Overview == | | == Overview == |
| The complex refractive index is a basic property in the study of light-matter interactions and spectroscopy. Especially in the sum frequency generation (SFG) vibrational spectroscopy studies, the analysis of SFG spectra requires detailed information of the Fresnel factors in the typical three-layer interface model. The dispersion of Fresnel factors in SFG spectra originates from the complex refractive index of the liquid. Studies <ref name = "ref1" /> have shown that the dispersion of the Fresnel factor may become significant and seriously change the analysis results of SFG spectra. However, the complex refractive index in the Infrared region is somehow unavailable for most commonly used liquids in SFG studies. Therefore, we have developed ComplexRI software package to obtain the complex refractive index of any liquids by using the ATR-IR spectra.
| | : The complex refractive index is a basic property in the study of light-matter interactions and spectroscopy. Especially in the sum frequency generation (SFG) vibrational spectroscopy studies, the analysis of SFG spectra requires detailed information of the Fresnel factors in the typical three-layer interface model. The dispersion of Fresnel factors in SFG spectra originates from the complex refractive index of the liquid. Studies <ref name = "ref1" /> have shown that the dispersion of the Fresnel factor may become significant and seriously change the analysis results of SFG spectra. However, the complex refractive index in the Infrared region is somehow unavailable for most commonly used liquids in SFG studies. Therefore, we have developed ComplexRI software package to obtain the complex refractive index of any liquids by using the ATR-IR spectra. |
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| ==Characteristic== | | ==Characteristic== |
2021年12月21日 (火) 07:40時点における版
Overview
- The complex refractive index is a basic property in the study of light-matter interactions and spectroscopy. Especially in the sum frequency generation (SFG) vibrational spectroscopy studies, the analysis of SFG spectra requires detailed information of the Fresnel factors in the typical three-layer interface model. The dispersion of Fresnel factors in SFG spectra originates from the complex refractive index of the liquid. Studies [1] have shown that the dispersion of the Fresnel factor may become significant and seriously change the analysis results of SFG spectra. However, the complex refractive index in the Infrared region is somehow unavailable for most commonly used liquids in SFG studies. Therefore, we have developed ComplexRI software package to obtain the complex refractive index of any liquids by using the ATR-IR spectra.
Characteristic
- 全反射実験の実験データさえあれば、複素屈折率の分散を出すことが可能。
- 適用範囲は赤外領域。これは、和周波分光では官能基を調べることを目的としており、これに一致する光の周波数帯が赤外領域だからである。
Production
和周波分光の結果をより正確に解析するための情報として様々な官能基に関する複素屈折率の分散を調べた論文[1][2][3]がある。これは全反射実験のデータに基づいて屈折率の分散をまとめたものになっている。本ComplexRIはこれに基づいて、全反射実験のデータさえ与えれば、同じようなフィッティングが簡単に行えるように開発された。
フィッティング計算には論文[2][3]で用いられたものを主として用いている。これは、本研究室の王助教と以前森田グループに所属していた村田によって作成されたものである。本ComplexRIでは初期値を設定しなくてもフィッティングが行えるように、少しアルゴリズムを改良している。これは本研究室の森田教授、王助教の指導の下で上村が実装した。
また、WebアプリケーションとしてのUIも上村が実装した。
Tutorial
Manual
Internal processing
| index（Internal peocessing）
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| explanation01：How to fit the Reflectance spectra
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References
- ↑ 1.0 1.1 "Effect of Frequency-Dependent Fresnel Factor on the Vibrational Sum Frequency Generation Spectra for Liquid/Solid Interfaces"
Lin Wang, Satoshi Nihonyanagi, Ken-ichi Inoue, Kei Nishikawa, Akihiro Morita, Shen Ye, Tahei Tahara, J. Phys. Chem. C, 123(25) 15665-15673 (2019).
- ↑ 2.0 2.1 "Dispersion of Complex Refractive Indices for Intense Vibrational Bands. II Implication to Sum Frequency Generation Spectroscopy"
Lin Wang, Ryo Murata, Ken-ichi Inoue, Shen Ye, and Akihiro Morita, J. Phys. Chem. B, 125(34), 9804-9810 (2021).
- ↑ 3.0 3.1 "Dispersion of Complex Refractive Indices for Intense Vibrational Bands. I Quantitative Spectra"
Ryo Murata, Ken-ichi Inoue, Lin Wang, Shen Ye, and Akihiro Morita, J. Phys. Chem. B, 125(34), 9794-9803 (2021).