Heat Transport between Au Nanorods, Surrounding Liquids, and Solid Supports

Park, Jonglo; Huang, Jingyu; Wang, Wei; Murphy, Catherine J.; Cahill, David G.

doi:10.1021/jp308130d

Cited by 50 publications

(60 citation statements)

References 31 publications

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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%

Spectral mapping of heat transfer mechanisms at liquid-solid interfaces

et al. 2016

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Thermal transport through liquid-solid interfaces plays an important role in many chemical and biological processes, and better understanding of liquid-solid energy transfer is expected to enable improving the efficiency of thermally driven applications. We determine the spectral distribution of thermal current at liquid-solid interfaces from nonequilibrium molecular dynamics, delivering a detailed picture of the contributions of different vibrational modes to liquid-solid energy transfer. Our results show that surface modes located at the Brillouin zone edge and polarized along the liquidsolid surface normal play a crucial role in liquid-solid energy transfer. Strong liquid-solid adhesion allows also for the coupling of in-plane polarized modes in the solid with the liquid, enhancing the heat transfer rate and enabling efficient energy transfer up to the cut-off frequency of the solid. Our results provide fundamental understanding of the energy transfer mechanisms in liquid-solid systems and enable detailed investigations of energy transfer between, e.g., water and organic molecules.

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Section: Introductionmentioning

confidence: 99%

Spectral mapping of heat transfer mechanisms at liquid-solid interfaces

et al. 2016

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“…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.…”

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confidence: 99%

Time-Resolved Investigations of the Cooling Dynamics of Metal Nanoparticles: Impact of Environment

et al. 2015

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Tunable two-color ultrafast pump−probe experiments are performed on colloidal metal nanospheres in water and ethanol, and the results are interpreted through a model including thermal dynamics in both the nanoparticle and its environment. Transient optical signals measured for gold nanoparticles in ethanol display a complex temporal response strongly dependent on the wavelength of the probe beam. We demonstrate that its origin is related to a large contribution of liquid environment transient heating to the optical response, in contrast to the usual assumption that optical transmission changes reflect the evolution of nanoparticle temperature only. Accounting for this contribution enables an accurate measurement of thermal conductances at gold− ethanol and gold−water interfaces. Moreover, the thermal dynamics of the solvent can be selectively probed through a specific choice of probe wavelength.

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“…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.…”

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confidence: 99%

Enhancing solid-liquid interface thermal transport using self-assembled monolayers

Tian

Marconnet

Chen

2015

Applied Physics Letters

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The thermal conductance across solid-liquid interfaces is of interest for many applications. Using time-domain thermoreflectance (TDTR), we measure the thermal conductance across self-assembled monolayers (SAMs), grown on Au, to ethanol. We systematically study the effect of different functional groups and the alkane chain length on the thermal conductance. The results show that adding this extra molecular layer can enhance the thermal transport across the solid-liquid interface. While the enhancement is up to 5 times from hexanedithiol, the enhancement from hexanethiol, undecanethiol and hexadecanethiol is approximately a factor of 2.

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Heat Transport between Au Nanorods, Surrounding Liquids, and Solid Supports

Cited by 50 publications

References 31 publications

Spectral mapping of heat transfer mechanisms at liquid-solid interfaces

Spectral mapping of heat transfer mechanisms at liquid-solid interfaces

Time-Resolved Investigations of the Cooling Dynamics of Metal Nanoparticles: Impact of Environment

Enhancing solid-liquid interface thermal transport using self-assembled monolayers

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