Award Accounts : The Chemical Society of Japan Award for 2005 : Time-Resolved Spectroscopic and Imaging Studies on Laser Ablation of Molecular Systems : From Mechanistic Study to Bio/Nano Applications
-
- Masuhara Hiroshi
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University
書誌事項
- タイトル別名
-
- Time-Resolved Spectroscopic and Imaging Studies on Laser Ablation of Molecular Systems: From Mechanistic Study to Bio/Nano Applications
この論文をさがす
抄録
Studies on laser ablation of polymer films, molecular crystals in solution, protein solution, and culture media containing living cells are summarized and considered. Dynamics and mechanism of laser ablation were systematically studied by utilizing time-resolved spectroscopy and imaging; femtosecond–nanosecond transient absorption and emission spectroscopy, nanosecond shadowgraphy, nanosecond–nanometer interferometry, femtosecond surface light scattering imaging. It was confirmed by integrating both data that primary processes of laser ablation can be well understood in the framework of Jablonski diagram. For nanosecond laser ablation of doped polymers, it was demonstrated that cyclic multiphoton absorption is an efficient photothermal conversion process leading to photothermal ablation. For femtosecond laser ablation of dye films, transient pressure mechanism was proposed indicating photomechanical ablation. As applications of laser ablation, nanoparticle preparation, protein crystallization, and manipulation of living cells are presented. Laser ablation of molecular crystals in poor solvent gives small fragments whose size are in a few tens nm. The fabricated nanocolloids are stable without adding detergents and their size was the smallest as nanoparticles produced by the top-down-method. Multiphoton laser ablation of water generates local impulsive force due to bubble formation, shockwave propagation, and local convection flow. The force triggers molecular and protein crystallization in their supersaturated solutions, whose mechanisms are described and considered. The impulsive force is also very useful for manipulating living cells and its high potential was confirmed by examining cell functions such as division, differentiation, death, and migration. Finally summary and future plan are presented.
収録刊行物
-
- Bulletin of the Chemical Society of Japan
-
Bulletin of the Chemical Society of Japan 86 (7), 755-783, 2013
公益社団法人 日本化学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001204142358784
-
- NII論文ID
- 10031183242
-
- NII書誌ID
- AA00580132
-
- COI
- 1:CAS:528:DC%2BC3sXht1Clsb3F
-
- ISSN
- 13480634
- 00092673
-
- NDL書誌ID
- 024671974
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可