The hydrothermalr eactiono fZ n 2+ + ions with a mixture of two ligands, Hcptpya nd H 3 btc (Hcptpy = 4-(4-carboxyphenyl)-2,2':4',4''-terpyridine; H 3 btc = 1,3,5-benzenetricarboxylic acid), led to the formationo fa3D metal-organic framework (MOF) with 1D channels, [Zn 2 (cptpy)(btc)(H 2 O)] n (1), which was structurally characterized by using single-crystal X-ray diffraction (SXRD). In MOF 1,t wo independentZ n 2+ + ions were interconnected by btc 3À ligands to form a1 D chain, whilst adjacent Zn 2+ + ions were alternatelyb ridged by cptpy À ligandst og eneratea2D sheet,w hich was further linked by 1D chains to form a3 Df ramework with an ew (3,3,4,4)-connected topology.F urthermore, compound 1 also exhibited excellent stability towards air and water and, more importantly,l uminescence experiments indicated that it could serve as ap robe for the sensitive detection of paraquat (PAQ) and Fe 3+ + ions in aqueous solution.
A 17.3-inch WQHD foldable AMOLED display with 10 bit depth was developed. Electrical regulation was carried out to realize high uniformity and contrast ratio. Nearly 100% Adobe and DCI-P3 coverage revealed its outstanding color expression capacity. De-mura and IR-drop compensation IP were integrated to improve visual effects and user experience.
In this study, novel n-type double-gate (DG) junction-less (J-less) polycrystalline silicon (poly-Si) nanostrip transistors with different channel doping concentrations (N C ) have been fabricated and investigated. The effects of channel doping concentration on device characteristics were examined comprehensively in this work. The experimental data show that as the channel doping concentration of the J-less device increases, the threshold voltage (V TH ) becomes more negative. Besides, the drain-induced barrier lowering and the subthreshold swing of the J-less transistors become larger as the channel doping increases. We also found that as the channel doping increases, the off-current (I OFF ) increases and the on-current (I ON ) actually decreases due to the doping-dependent mobility degradation. The conduction mechanisms under different channel doping concentrations were also investigated by TCAD simulation. The experimental results suggest that the n-type DG nanostrip J-less transistor with lower channel doping will have superior device characteristics.
In this paper, radiation patterns of a single-layer microstrip antenna, which can be switched to operate under dual TM 11 modes of a circular patch and a TM 21 mode of a concentric annular shorted ring patch, is investigated and presented. Broadside and monopole-like patterns under multi modes are combined to broaden the antenna main-beam coverage. Besides, based on the current distributions of these modes, several slots are etched to realize antenna miniaturization. The miniaturized pattern reconfigurable antenna with a joint wide beam is applied to a dual-polarized 5 Â 5 planar array, which can scan its main beam from À60 to 60 in both orthogonal planes with a gain fluctuation less than 3 dB. In addition, the array is synthesized with the convex optimization approach to obtain low sidelobe level in its wide-angle scanning range, validated by a full-wave simulation study followed by the experimental verification.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.