Abstract
We report experimental studies of interfacial heat transport for a system of Au nanodisks supported on fused silica substrates, coated by hydrophilic and hydrophobic self-assembled monolayers, and immersed in water-ethanol mixtures and solutions of a nonionic surfactant, hexyl-β-d-glucoside in water. The Au nanodisks are abruptly heated by a sub-picosecond optical pulse; time-resolved changes in the temperature of the Au nanodisk and the liquid near the nanodisk/liquid interface are monitored by measurements of transient changes in optical transmission. The interface thermal conductance G of nanodisks coated with a hydrophilic self-assembled monolayer (SAM) of sodium 3-mercapto-1-propanesulfonate varies over the range 90 < G < 190 MW m-2 K-1 as the composition of the liquid mixture is changed from pure ethanol to pure water. With increasing hexyl-β-d-glucoside concentration in water, the interface thermal conductance of hydrophilic nanodisks decreases from 190 MW m-2 K-1 to 130 MW m-2 K-1 as the concentration is varied between pure water and 100 mM glucoside. For hydrophobic surfaces, G = 70 ± 10 MW m-2 K-1. We relate changes in thermal conductance to changes in work of adhesion.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2814-2821 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry C |
| Volume | 120 |
| Issue number | 5 |
| DOIs | |
| State | Published - Feb 18 2016 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Cite this
Plasmonic Sensing of Heat Transport at Solid-Liquid Interfaces. / Park, Jonglo; Cahill, David G.
In: Journal of Physical Chemistry C, Vol. 120, No. 5, 18.02.2016, p. 2814-2821.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Plasmonic Sensing of Heat Transport at Solid-Liquid Interfaces
AU - Park, Jonglo
AU - Cahill, David G.
PY - 2016/2/18
Y1 - 2016/2/18
N2 - We report experimental studies of interfacial heat transport for a system of Au nanodisks supported on fused silica substrates, coated by hydrophilic and hydrophobic self-assembled monolayers, and immersed in water-ethanol mixtures and solutions of a nonionic surfactant, hexyl-β-d-glucoside in water. The Au nanodisks are abruptly heated by a sub-picosecond optical pulse; time-resolved changes in the temperature of the Au nanodisk and the liquid near the nanodisk/liquid interface are monitored by measurements of transient changes in optical transmission. The interface thermal conductance G of nanodisks coated with a hydrophilic self-assembled monolayer (SAM) of sodium 3-mercapto-1-propanesulfonate varies over the range 90 < G < 190 MW m-2 K-1 as the composition of the liquid mixture is changed from pure ethanol to pure water. With increasing hexyl-β-d-glucoside concentration in water, the interface thermal conductance of hydrophilic nanodisks decreases from 190 MW m-2 K-1 to 130 MW m-2 K-1 as the concentration is varied between pure water and 100 mM glucoside. For hydrophobic surfaces, G = 70 ± 10 MW m-2 K-1. We relate changes in thermal conductance to changes in work of adhesion.
AB - We report experimental studies of interfacial heat transport for a system of Au nanodisks supported on fused silica substrates, coated by hydrophilic and hydrophobic self-assembled monolayers, and immersed in water-ethanol mixtures and solutions of a nonionic surfactant, hexyl-β-d-glucoside in water. The Au nanodisks are abruptly heated by a sub-picosecond optical pulse; time-resolved changes in the temperature of the Au nanodisk and the liquid near the nanodisk/liquid interface are monitored by measurements of transient changes in optical transmission. The interface thermal conductance G of nanodisks coated with a hydrophilic self-assembled monolayer (SAM) of sodium 3-mercapto-1-propanesulfonate varies over the range 90 < G < 190 MW m-2 K-1 as the composition of the liquid mixture is changed from pure ethanol to pure water. With increasing hexyl-β-d-glucoside concentration in water, the interface thermal conductance of hydrophilic nanodisks decreases from 190 MW m-2 K-1 to 130 MW m-2 K-1 as the concentration is varied between pure water and 100 mM glucoside. For hydrophobic surfaces, G = 70 ± 10 MW m-2 K-1. We relate changes in thermal conductance to changes in work of adhesion.
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UR - http://www.scopus.com/inward/citedby.url?scp=84958078641&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b11706
DO - 10.1021/acs.jpcc.5b11706
M3 - Article
AN - SCOPUS:84958078641
VL - 120
SP - 2814
EP - 2821
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 5
ER -