Improvement of heat transfer efficiency at solid-gas interfaces by self-assembled monolayers
Abstract
Using molecular dynamics simulations, we demonstrate that the efficiency of heat exchange between a solid and a gas can be maximized by functionalizing solid surface with organic self-assembled monolayers (SAMs). We observe that for bare metal surfaces, the thermal accommodation coefficient (TAC) strongly depends on the solid-gas interaction strength. For metal surfaces modified with organic SAMs, the TAC is close to its theoretical maximum and is essentially independent from the SAM-gas interaction strength. The analysis of the simulation results indicates that softer and lighter SAMs, compared to the bare metal surfaces, are responsible for the greatly enhanced TAC.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 11, 2013
- Source ID
- 10.1063/1.4792530
Entities
People
- Pawel Keblinski
- Tapan Desai
- William Evans
- Zhi Liang
Organizations
- Air Force Office of Scientific Research
- Rensselaer Polytechnic Institute