Solar Thermal Characterisation of Micro-Patterned High Temperature Selective Surfaces

Hanyu Cen, Sara Nunez-Sanchez, Ian Bickerton, Neil A Fox, Martin J Cryan

Research output: Contribution to journalArticle (Academic Journal)peer-review

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We present measured optical absorptivity, emissivity, and maximum solar-heated temperatures for micropatterned molybdenum. The molybdenum samples were fabricated using laser micromachining and characterized using an integrating sphere and an infrared microscope. In-air solar simulator-heated temperature results for the molybdenum samples with different microstructures are presented, and COMSOL modeling is then used to predict in-vacuum maximum temperatures. A vacuum chamber was developed to reduce the convection heat loss with a mount designed to minimize conduction loss, and a maximum measured temperature of 413°C was obtained.
Original languageEnglish
Article number024503
JournalJournal of Photonics for Energy
Issue number2
Early online date18 May 2020
Publication statusE-pub ahead of print - 18 May 2020

Structured keywords

  • Photonics and Quantum


  • solar
  • energy
  • absorption
  • heat transfer
  • molybdenum
  • micro-patterned


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