Temperature of a nanoparticle above a substrate under radiative heating and cooling

Abstract

Controlling the temperature in architectures involving nanoparticles and substrates is a key issue for applications involving micro and nanoscale heat transfer. We study the thermal behavior of a single nanoparticle interacting with a flat substrate under external monochromatic illumination, and with thermal radiation as the unique heat loss channel. We develop a model to compute the temperature of the nanoparticle, based on an effective dipole-polarizability approach. Using numerical simulations, we thoroughly investigate the impacts of various parameters affecting the nanoparticle temperature, such as the nanoparticle-to-substrate gap distance, the incident light wavelength and polarization, or the material resonances. This study provides a tool for the thermal characterization and design of micro or nanoscale systems coupling substrates with nanoparticles or optical antennas.

arXiv comment9 pages, 8 figures

References in corpus (9)

• Near-field radiative heat transfer between a sphere and a substrate
• Plasmonics simulations with the MNPBEM toolbox: Consideration of substrates and layer structures
• Shape-Independent Limits to Near-Field Radiative Heat Transfer
• Radiative Thermal Rectification between SiC and SiO2
• Near-field induction heating of metallic nanoparticles due to infrared magnetic dipole contribution
• Near-field radiative heat transfer between arbitrarily-shaped objects and a surface
• Strong tip-sample coupling in thermal radiation scanning tunneling microscopy
• Radiative cooling of nanoparticles close to a surface
• Near-field heat transfer between a nanoparticle and a rough surface

Cited by in corpus (2)

• Revisiting the Dipole Model for a Thermal Infrared Near-Field Spectroscope
• Superconducting Coherence Peak in Near-Field Radiative Heat Transfer