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Poster

WEB Thermal emission of colloid-based plasmonic structures for radiative cooling

Tuesday (25.02.2020)
19:56 - 19:56 Poster Room
Part of:
Line-Up:
- Poster *web*Simulation of Spinning Processes with Experimental Validation 1 Stefan Hermanns
- Poster *web*Screening Solubility-Enhancing Coformers in Amorphous Solid Dispersions: a Group Contribution based Miscibility Method 1 Milad Asgarpour Khansary
- Poster *web*Thermal emission of colloid-based plasmonic structures for radiative cooling 1 Kishin Matsumori
- Poster *web*Free energies of segregation: thermodynamic integration at grain boundaries using pyiron 1 Dr. Liam Huber
- Poster *web*Effective mobility of BCC dislocations in two-dimensional discrete dislocation plasticity 1 Tarun Katiyar
- Poster TBA -
- Poster *web*Computer Aided Reliability by additive manufacturing of components with locally varied properties 1 Dr. Iliya Radulov
- Poster *web*Numerical Study of Solidification in Metallic Droplet 1 Dandan Yao
- Poster TBA -
- Poster TBA -
- Poster TBA -
- Poster TBA -
- Poster *web*Thermodynamic assessment and modelling of interactions in liquid Ni alloys/oxide systems 1 Saverio Sitzia
- Poster *web*The limiting effect of interfacial band alignment on efficiency of earth-abundant chalcogenide photovoltaic materials 1 Dr. Elaheh Ghorbani
- Poster *web*HMC hub matter for as a resource for materials research in the German research landscape 1 Dr. Oonagh Mannix
- Poster *web*Nanoindentation of Al: Molecular dynamics simulations and dislocation dynamics simulations 1 Sa-Ly Dang
- Poster *web*Rational Design of Metal Anchored Carbon Quantum Dots as Optimal Efficient Electrocatalysts for Hydrogen production Using Machine Learning and High-throughput Experimentation 1 Yujin Chae
- Poster *web*Correlating Raman Spectra of Ibuprofen, Nicotinamide and Their Dimers 1 Milad Asgarpour Khansary
- Poster *web*High Throughput Screening for Electrochemical Nitrogen Reduction for the Ammonia Synthesis via Machine Learning 1 JaeHyoung Lim
- Poster Thermodynamic investigation of oxidation behavior of NiAl intermetallics with embedded Cr and Mo 1 Golnar Geramifard

Session -M: Modelling, Simulation, and Data
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Topic X: Poster Session


Radiative cooling is an approach to cool down the temperature of objects, such as buildings, by selective thermal radiation. The cooling efficiency is maximized when the system emits thermal radiation only in the wavelength range from 8-13 µm, where the atmosphere is transparent. Photonics and plasmonics have been utilized to engineer the emissivity of materials for radiative cooling and a lot of nano-micro structures have been proposed. However, multiple-times sputtering or electron beam lithography are required to fabricate such nanostructured systems. Consequently, it is difficult to produce large-area device efficiently. Hybrid materials comprising polymer and silica nanoparticles have also been reported to overcome those fabrication difficulties, but it is difficult to control the emissivity.

To realize a high performance scalable radiative cooler, we designed a plasmonic structure, which can be easily fabricated by colloidal lithography. We investigate this structural motif by finite element method simulations using COMSOL Multiphysics and transfer these results into experimental prototypes. Our proposed structure is composed of an Au reflector, micron-sized SiO2 spheres, and a thin layer of Indium Tin Oxide (ITO). Our results show that by using the right particle size and thickness of ITO, it is possible to specifically tune the emission properties in the desired wavelength range. We provide structural guidelines for selective and strong emissivity in the wavelength range from 8 to 13 µm. This broadband selective emissivity is attributed to Fano resonances induced by the interaction between the plasmon resonance of the ITO semishell and the phonon resonance of the SiO2 sphere.

 

Speaker:
Kishin Matsumori
University of Bayreuth
Additional Authors:
  • Prof. Dr. Markus Retsch
    University of Bayreuth