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1. (WO2018049109) METHODS AND SYSTEMS FOR OPTICAL CONTROL OF METAL PARTICLES WITH THERMOPHORESIS

Pub. No.:    WO/2018/049109    International Application No.:    PCT/US2017/050605
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Sat Sep 09 01:59:59 CEST 2017
IPC: G01N 21/64
G01N 21/71
G02B 5/00
G21K 1/00
Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
Inventors: ZHENG, Yuebing
LIN, Linhan
PENG, Xiaolei
Title: METHODS AND SYSTEMS FOR OPTICAL CONTROL OF METAL PARTICLES WITH THERMOPHORESIS
Abstract:
Disclosed herein are methods comprising illuminating a first location of a plasmonic substrate with electromagnetic radiation, wherein the electromagnetic radiation comprises a wavelength that overlaps with at least a portion of the plasmon resonance energy of the plasmonic substrate. The plasmonic substrate can be in thermal contact with a liquid sample comprising a plurality of metal particles and a surfactant, the liquid sample having a first temperature. The methods can further comprise generating a confinement region at a location in the liquid sample proximate to the first location of the plasmonic substrate, wherein at least a portion of the confinement region has a second temperature that is greater than the first temperature such that the confinement region is bound by a temperature gradient. The methods can further comprise trapping at least a portion of the plurality of metal particles within the confinement region.