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Ubaid Ur Rahman Qureshi, Muhammad Ismail Khan and Bin Hu
In this study, an ultra-wideband actively tunable terahertz absorber composed of four identical arc-shaped structures made of phase transition material vanadium dioxide (VO2) is presented. A metal ground plane is placed at the bottom and an insulating sp...
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Wei Chen, Yan Xu, Yang Gao, Lanjing Ji, Xibin Wang, Xiaoqiang Sun and Daming Zhang
A broadband polarization-insensitive graphene modulator has been proposed. The dual built-in orthogonal slots waveguide allows polarization independence for the transverse electric (TE) mode and the transverse magnetic (TM) mode. Due to the introduction ...
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Wei Chen, Jing Liu, Wen-Zhuang Ma, Gao-Xiang Yu, Jing-Qian Chen, Hao-Yuan Cai and Cheng-Fu Yang
Solar energy is the most important clean energy source on the earth, and many research studies have been conducted to investigate solar-energy collection. This article numerically proposes a new ultra-broadband solar absorber with structures of multilaye...
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Hazvinei Tsitsi Tamuka Moyo, Mark Zuidgeest
The marginalization of low-income earners, in regard to access to economic activities, is a topical issue in South Africa. The location of residential areas relative to locations of employment plays a large role in determining how accessible employment o...
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Andreas Schmitt and Brian Brisco
One fundamental task in wetland monitoring is the regular mapping of (temporarily) flooded areas especially beneath vegetation. Due to the independence of weather and illumination conditions, Synthetic Aperture Radar (SAR) sensors could provide a suitabl...
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