New concept of solar thermal energy collection: ultra-thin graphene film
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The researchers developed a working prototype of 2.5 cm x 5 cm to demonstrate the photothermal properties of graphene-based metamaterial absorbers.
They also proposed a scalable manufacturing strategy to manufacture the proposed graphene-based absorbent at low cost.
"This is one of the many graphene innovations in our group," said Professor Jia Baohua, head of nanophotonic solar technology research at the Swinburne Microphotonics Center.
"In this work, the reduced graphene oxide layer and the grating structure are coated with a solution and manufactured by laser nanomachining. These methods are both scalable and low cost."
"Our cost-effective and scalable graphene absorbers are expected to be used in integrated large-scale applications that require polarization, angle insensitivity, and wide bandwidth absorption, such as energy harvesting, thermal emitters, optical interconnects, photodetectors, and optical modulation "The first author of this research paper, said Dr. Lin Lin, senior researcher at the Slimborn Microphotonics Center.
"The ruggedness of manufacturing on a flexible substrate and graphene makes it suitable for industrial use," added another author, Dr. Keng-Te Lin.
"The physical effect that causes this prominent absorption in such a thin layer is very common, which opens up many exciting applications," said Dr. Bjorn Sturmberg, who received his doctorate in physics from the University of Sydney in 2016. Hold a position at the Australian National University.
"The results show what can be achieved through cooperation between different universities. In this case, in cooperation with the University of Sydney and Swinburne University, each university has its own expertise to discover new sciences and applications of our science. , "Said Professor Martijn de Sterke of the Institute of Photonics and Optical Sciences.
"Through our cooperation, we have come up with a very innovative and successful result. We have basically developed a new optical material whose performance can be adjusted for multiple uses."
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