Open AccessThermal tweezers for surface manipulation with nanoscale resolution
Author(s) -
Dmitri K. Gramotnev,
Daniel R. Mason,
Galina Gramotnev,
Anthony J. Rasmussen
Publication year - 2007
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.2437061
Subject(s) - thermophoresis , optical tweezers , nanolithography , nanoscopic scale , trapping , chemical physics , nanotechnology , brownian motion , particle (ecology) , nanometre , nanoparticle , materials science , resolution (logic) , thermal fluctuations , molecule , thermal , molecular physics , chemistry , optics , condensed matter physics , physics , fabrication , thermodynamics , alternative medicine , artificial intelligence , ecology , oceanography , pathology , computer science , composite material , biology , nanofluid , quantum mechanics , medicine , organic chemistry , geology
In this letter, we demonstrate that random Brownian forces can be used for effective trapping and manipulation of nanoparticles and molecules on surfaces in the presence of strong temperature modulation. Substantial (~ 2 orders of magnitude) increase in the modulation of particle concentration (trapping efficiency) compared to thermophoresis in a bulk medium is predicted and explained by a periodic potential of interaction between a particle/molecule and the crystalline surface. As a result, a new nanofabrication and manipulation technique for creating optically-induced complex surface structures with nano-scale resolution below tens of nanometers is proposed and developed
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