2012
DOI: 10.1021/jp308130d
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Heat Transport between Au Nanorods, Surrounding Liquids, and Solid Supports

Abstract: We report experimental studies of heat transport for a system of Au nanorods immobilized on a crystalline quartz support and immersed in various organic fluids. The Au nanorods are abruptly heated by a subpicosecond optical pulse; the cooling of the Au nanorods is monitored by transient absorption. We analyze the data using a three-dimensional model that describes heat flow between the nanorod and fluid with an additional interface thermal conductance added to account for heat transport between the Au nanorods… Show more

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Cited by 50 publications
(60 citation statements)
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“…The transfer of vibrational energy between liquids and solids is, however, poorly understood compared to solid-solid interfaces, in part due to the difficulty of experimentally isolating the thermal resistance of the interface [7,8]. Existing experiments have, however, indicated [8][9][10][11][12] that the interfacial conductance of a typical solid-liquid surface is generally close to the conductance of a typical solid-solid interface.…”
Section: Introductionmentioning
confidence: 99%
“…The transfer of vibrational energy between liquids and solids is, however, poorly understood compared to solid-solid interfaces, in part due to the difficulty of experimentally isolating the thermal resistance of the interface [7,8]. Existing experiments have, however, indicated [8][9][10][11][12] that the interfacial conductance of a typical solid-liquid surface is generally close to the conductance of a typical solid-solid interface.…”
Section: Introductionmentioning
confidence: 99%
“…This contact-free approach has been applied to both metallic thin films and nanoparticles, enabling monitoring of their cooling dynamics on picosecond timescales by using pump and probe pulses as heater and thermometer, respectively. [11][12][13][14][15][16][17][18][19] In such experiments, metal nanostructures are selectively heated by the absorbed pump pulse and their subsequent cooling (governed by heat flow through the nanostructure boundaries and heat diffusion in the surrounding medium) is monitored by following the transmission/reflection changes of the probe pulse as a function of pump-probe delay.…”
mentioning
confidence: 99%
“…Better understanding of solid-liquid interfacial transport is important for different applications such as cancer treatment based on thermal therapeutics and nanoparticles 5 , solar thermal heating 6 , and colloids and nanofluids [7][8][9] . Experiments on the thermal conductance of solid-liquid interfaces typically employ suspensions of metal nanorods in water or organic solvents [10][11][12][13][14] . Although planar solid-liquid interfaces modified with hydrophilic and hydrophobic SAMs have been experimentally studied 15,16 , there have been no controlled studies of solid-liquid interfaces with and without SAMs and they varied the SAM type as well as the SAM end group.…”
mentioning
confidence: 99%