Simulation for Thermal Radiation Emitted from Functional Surface

Abstract

Radiative characteristics of one-dimensional structured emitter was investigated through calculating emission of thermal radiation by solving the Maxwell's Equations using a FDTD method. The radiative simulation based on fluctuational electrodynamics enable to evaluate quantitative emission of thermal radiation. For a specular emitter made of nickel metal with a thin-transparent film, some interference was described through simulation solving emission of thermal radiation. For a shallow-grooved surface emitter made of silicon carbide, surface-phonon polaritons were coupled with a propagating-radiation by the periodic structure. Finally, the characteristics of emission controls by the specular metal with the thin-transparent film and the shallow-grooved surface emitter were illustrated and compared from a point of view of emission of thermal radiation.

FDTD Simulation of Near-Field Radiative Heat Transfer between Thin Films Supporting Surface Phonon Polaritons: Lessons Learned

“…Besides, to avoid any artificial reflection at the boundaries of the computational area we use the complex frequency-shifted (CFS) approach to implement the perfectly matched layer (PML) absorbing boundary conditions [30], [31]. The FDTD code has been validated in previous works by modeling the directional spectral emittance of specular surfaces [24].…”

“…One promising alternative is the use of the FDTD (finite difference time domain) method [21] which consist on rigorously solving Maxwell equation in the time domain after replacing the derivatives by finite differences. This method has been already used to simulate the far-field thermal emission of photonic crystals [22][23][24] and more recently, the near-field radiative heat transfer between photonic crystals slabs [25], both of them within the frame of the fluctuation electrodynamics theory.…”

Measurement of near-field radiation intensity above a tungsten emitter using a fibrous optical microscope

“…Recently, the authors proposed pillar array structured surfaces setup with parallel alignment as a new spectral control method for the near-field radiation transfer . In addition, the spectral control for far-field radiation, i.e., propagating wave component, was also achieved by the surface plasmon on the periodical surface structure (Hirashima et al, 2011). In order to clarify the mechanism of spectral control, the distribution of electromagnetic field intensity should be confirmed through experiment using a scanning near-field optical microscope system.…”