Free-standing graphene oxide mid-infrared polarizers
Xiaorui Zheng, Bing Xu, Shuo Li, Han Lin, Ling Qiu, Dan Li, Baohua Jia
Nanoscale | Royal Society of Chemistry | Published : 2020
Mid-infrared (MIR) represents a crucial spectral region for applications in spectroscopy, sensing, imaging, security and industry screening, owing to the strong characteristic vibrational transitions of many important molecules. However, the current MIR compatible materials are fragile, hazardous, and costly, which hampers the performance of MIR devices. Here, we developed a versatile transmittance-based Kramers–Kronig method and obtained the optical properties of graphene oxide in the MIR region, unveiling its application potentials as a novel MIR compatible material. As an example, we demonstrated free-standing graphene oxide MIR polarizers with large extinction ratio (∼20 dB) and controll..View full abstract
Awarded by Australia Research Council through the Discovery Project scheme
Awarded by Industrial Transformation Training Centres scheme
B. J. acknowledges support from the Australia Research Council through the Discovery Project scheme (Grant No. DP190103186) and Industrial Transformation Training Centres scheme (Grant No. IC180100005). All authors acknowledge the support from the Advanced Solar Facility at Swinburne University of Technology.