Synthesis of 1,2,4-azadiphosphole derivatives based on vanadium-catalyzed [2+2+1] cycloaddition reactions of azobenzenes with phosphaalkynes
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DOI: 10.1039/d0ra02503h
Abstract: A new synthetic method is described to construct 1,2,4-azadiphosphole derivatives based on vanadium-catalyzed [2+2+1] cycloaddition reactions. Reactions of azobenzenes as nitrogen sources with phosphaalkynes as phosphorous counterparts in the presence of VCl2(thf)2 as a catalyst… read more here.
Keywords: azadiphosphole derivatives; cycloaddition reactions; based vanadium; catalyzed cycloaddition ... See more keywords
Relaxation oscillations in circuits containing sandwich switches based on vanadium dioxide
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DOI: 10.1080/01411594.2016.1201818
Abstract: ABSTRACT Electrical switching with an S-shaped I–V characteristic is studied in metal/oxide/metal structures based on vanadium oxide thin films fabricated by electrochemical oxidation. This switching effect is associated with the metal–insulator phase transition in VO2,… read more here.
Keywords: based vanadium; relaxation oscillations; oscillations circuits; vanadium dioxide ... See more keywords
Multi-band tunable terahertz bandpass filter based on vanadium dioxide hybrid metamaterial
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DOI: 10.1088/2053-1591/ab0392
Abstract: A multi-band terahertz (THz) bandpass filter based on vanadium dioxide (VO2) hybrid metamaterial is experimentally demonstrated. From bottom to top of the filter, they are 650 nm-thick high resistance silicon substrate, 100 nm-thick Silicon nitride,… read more here.
Keywords: filter based; bandpass filter; filter; multi band ... See more keywords
Tunable wideband-narrowband switchable absorber based on vanadium dioxide and graphene.
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DOI: 10.1364/oe.476296
Abstract: A functionally tunable and absorption-tunable terahertz (THz) metamaterial absorber based on vanadium dioxide (VO2) and graphene is proposed and verified numerically. Based on phase transition properties of VO2 and tunability of graphene, the switching performance… read more here.
Keywords: graphene; based vanadium; vanadium dioxide; absorption ... See more keywords