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In August 2016, a yellow vein disease was observed on leaves of Euonymus bungeanus Maxim (Euonymus, Celastraceae) in Liaoning, China. Virions measuring 750 × 13 nm were observed in a sample from the diseased plant. A potexvirus was detected in the sample by small-RNA deep sequencing analysis and recovered by traditional cloning. The genome of this potexvirus consists of 7,279 nucleotides, excluding...
A dual-frequency antenna resonated at 0.32 THz and 0.65 THz has been analyzed and simulated for CMOS THz imaging and sensing systems. It includes the two rectified bowtie structures designed at metal and poly-Si layers in standard CMOS technology. Simulation results show that the antenna has the high gain and radiation efficiency and a great impedance matching comparing to the conventional metal dual-band...
A bowtie-shaped terahertz (THz) antenna with high impedance surface (HIS) is demonstrated for CMOS THz imaging and sensing systems. HIS is designed by metal layers in standard tail-end of CMOS technology and does not need any special post-process. We study the influence of HIS on antenna performance including the effect of metal vias and distance between antenna and HIS. A significant enhancement...
The source parasitic capacitor significantly influences the terahertz responsivity for CMOS terahertz detector. In this paper, the gate-enclosed MOSFET is used for terahertz signal detection in order to reduce the source parasitic capacitor. 3D-TCAD simulation reveals that the gate-enclosed structure improves the voltage responsivity (Rv) of the THz detectors and reduces noise-equivalent power (NEP)...
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