標題: Optical Trapping-Formed Colloidal Assembly with Horns Extended to the Outside of a Focus through Light Propagation
作者: Kudo, Tetsuhiro
Wang, Shun-Fa
Yuyama, Ken-ichi
Masuhara, Hiroshi
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
關鍵字: Optical trapping;colloidal assembly;light propagation;optical binding;glass/solution interface
公開日期: 五月-2016
摘要: We report optical trapping and assembling of colloidal particles at a glass/solution interface with a tightly focused laser beam of high intensity. It is generally believed that the particles are gathered only in an irradiated area where optical force is exerted on the particles by laser beam. Here we demonstrate that, the propagation of trapping laser from the focus to the outside of the formed assembly leads to expansion of the assembly much larger than the irradiated area with sticking out rows of linearly aligned particles like horns. The shape of the assembly, its structure, and the number of horns can be controlled by laser polarization. Optical trapping study utilizing the light propagation will open a new avenue for assembling and crystallizing quantum dots, metal nanoparticles, molecular clusters, proteins, and DNA.
URI: http://dx.doi.org/10.1021/acs.nanolett.6b00123
http://hdl.handle.net/11536/133801
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.6b00123
期刊: NANO LETTERS
Volume: 16
Issue: 5
起始頁: 3058
結束頁: 3062
顯示於類別:期刊論文