Shell-isolated nanoparticle-enhanced femtosecond stimulated Raman spectroscopy reveals ultrafast molecular dynamics of surface reactions
Hong-Gang Sun, Yuhan He, Ling-Yun Hu, Renxian Gao, Jing-Liang Yang, Huijie Liu, Xia-Guang Zhang, Gui-Lin Yin, Bin Hu, Zhong-Zhang Shi, Ye Yang, Yao-Hui Wang, Hua Zhang, Jinxuan Liu, Shisheng Zheng, Yu Gu, Zhaohui Wang, Jian-Feng Li · 2025
Read Shell-isolated nanoparticle-enhanced femtosecond stimulated Raman spectroscopy reveals ultrafast molecular dynamics of surface reactions by Hong-Gang Sun, Yuhan He, Ling-Yun Hu, Renxian Gao, Jing-Liang Yang, Huijie Liu, Xia-Guang Zhang, Gui-Lin Yin, Bin Hu, Zhong-Zhang Shi, Ye Yang, Yao-Hui Wang, Hua Zhang, Jinxuan Liu, Shisheng Zheng, Yu Gu, Zhaohui Wang, Jian-Feng Li (2025) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-12722254.txt.
Description
Hong-Gang Sun and co-authors build a spectroscopy tool fast and sensitive enough to film molecules twisting on a metal surface, in a 2025 paper. Surface reactions turn on motions lasting femtoseconds, far too quick for ordinary instruments. Their method pairs shell-isolated nanoparticles, which amplify Raman signals, with femtosecond stimulated Raman spectroscopy. Tuning the particles' plasmonic band to the laser boosted signals up to a millionfold.
A dye called malachite green served as the test case on gold and silver. The instrument caught the dye twisting inside itself within 100 femtoseconds of absorbing light. The intense local field near the particles sped the twist further. The authors say the tool can now watch surface chemistry unfold in real time, a long-sought window on how catalysis begins.
Catalog record
| CREATOR | Hong-Gang Sun, Yuhan He, Ling-Yun Hu, Renxian Gao, Jing-Liang Yang, Huijie Liu, Xia-Guang Zhang, Gui-Lin Yin, Bin Hu, Zhong-Zhang Shi, Ye Yang, Yao-Hui Wang, Hua Zhang, Jinxuan Liu, Shisheng Zheng, Yu Gu, Zhaohui Wang, Jian-Feng Li |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 33 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |