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Ultrasensitive Terahertz Biodetection(#br)In article number 2301165, Chao Chang, Xiaohui Du, and co‐workers demonstrate a chip‐based portable ultra‐sensitive THz metasensor by exploring quasi‐bound states in the continuum and report its capability for sensing low‐concentration analytes. The designed metasensor is made of the designed split‐ring resonator metasurface combining functionalized gold nanoparticles conjugated with the specific antibody.
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