研究目的
To study the heat dissipated in dipole antennas operating at 600 GHz to maximize the temperature at the center of the antenna where the nanothermocouples are attached, and to investigate the effect of different antenna materials and thermal insulation from the substrate on the temperature increase.
研究成果
The study demonstrates that the temperature increase at the center of the antenna can be maximized by using Au antennas with Ni center segment and by thermally insulating the antenna from the Si substrate with SiO2. The geometry-independent meshing method presented eliminates simulation artifacts caused by large geometry differences between the antenna and the surrounding media.
研究不足
The simulation does not take into account the heat loss by the lead lines of the nanothermocouples, which contribute about 30% of the total heat loss. Additionally, the tapered segments of the fabricated antennas are less sharp than in the simulation, which may be responsible for differences between simulation and experiment.
1：Experimental Design and Method Selection:
The study uses COMSOL Multiphysics Modeling Software to simulate the thermal response of dipole antennas at 600 GHz. The simulations include the excitation of antenna currents due to incident electromagnetic radiation and the resulting heating, as well as the heat flow along the antenna and into the air and substrate.
2：Sample Selection and Data Sources:
Antennas constructed from all-Au, all-Ni, and Au with Ni center segment are studied. The study also investigates the heat loss into the Si substrate and uses various thicknesses of SiO2 for thermal insulation.
3：List of Experimental Equipment and Materials:
COMSOL Multiphysics Modeling Software is used for simulations. The antennas are modeled with specific dimensions and materials (Au, Ni, Si, SiO2).
4：2).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The simulation involves solving the electromagnetic wave propagation followed by solving the heat transfer problem. The geometry of the model includes the high-resistivity Si substrate, air, and antenna. The simulation setup includes boundary conditions for launching 600 GHz plane waves and scattering boundary conditions to avoid reflections.
5：Data Analysis Methods:
The average temperature increase as a function of antenna length is calculated in the narrow section of the antenna using COMSOL’s domain probes.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
