Title :
Micro-concentrator for vanadium nanorods by efficient light-induced convective flow
Author :
Wilson, Brian ; Miao, Xiaoyu ; Lin, Lih Y.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA
Abstract :
Avalanche concentration, a rapid long-range accumulation of particles around a laser spot in a liquid sample, is demonstrated and characterized for VO2 nanorods. The effect is found to be driven by a convective flow in the sample, caused by efficient heating of VO2 nanorods that transition from insulator to metal within the laser spot.
Keywords :
convection; metal-insulator transition; microfluidics; nanostructured materials; radiation pressure; self-assembly; surface plasmons; vanadium compounds; VO2; avalanche clustering; heating; insulator-metal transition; light-induced convective flow; microconcentrator; microfluidic systems; optical radiation; optical-thermal energy conversion; self assembly; surface plasmon; vanadium nanorods; Biomedical optical imaging; Image motion analysis; Laser excitation; Laser transitions; Nanobioscience; Optical attenuators; Optical beams; Optical scattering; Plasmons; Stimulated emission; (140.7010) Trapping; (240.6680) Surface Plasmons;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
