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- Title
Ultrafast dynamics process of platinum nanoparticles under femtosecond laser.
- Authors
Chen, Chunyu; Wang, Jun; Yang, Suying; Wu, Wenzhi; Kong, Degui; Gao, Yachen
- Abstract
The energy relaxation dynamics process of Pt nanoparticles with a diameter of 25 nm after a 400-nm femtosecond laser excitation was investigated using pump-probe technology with 130 fs laser pulse. Experimental results show that the process includes a fast decay with time constant of 850 fs and a slow decay with time constant of 9 ps. Theoretical discussion indicates that the former results from electron-phonon coupling process, while the latter is from phonon-phonon coupling process.
- Subjects
PLATINUM nanoparticles; FEMTOSECOND lasers; PHYSICAL constants; COUPLING constants; ELECTRON-phonon interactions
- Publication
Journal of Nanoparticle Research, 2018, Vol 20, Issue 9, p1
- ISSN
1388-0764
- Publication type
Article
- DOI
10.1007/s11051-018-4345-9