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In article number 1801786, Lin Wang, Xiaoshuang Chen, and their co‐workers propose a metal‐topological insulator–metal subwavelength structure for ultrasensitivity, room temperature terahertz photodetection. The integration of a topological insulator and micro structures exploits the unique properties of topological surface states and opens up a new route for fast imaging applications, promising a...
Despite their huge application capabilities, millimeter‐ and terahertz‐wave photodetectors still face challenges in the detection scheme. Topological insulators (TIs) are predicted to be promising candidates for long‐wavelength photodetection, due to the presence of Dirac fermions in their topologically protected surface states. However, photodetection based on TIs is usually hindered by the large...
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