Results 11 to 20 of about 7,124 (268)
Directional terahertz holography with thermally active Janus metasurface
Light: Science & Applications, 2023 Dynamic manipulation of electromagnetic (EM) waves with multiple degrees of freedom plays an essential role in enhancing information processing. Currently, an enormous challenge is to realize directional terahertz (THz) holography.
Benwen Chen +17 more
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High-Sensitivity RF Choke-Enhanced Dipole Antenna-Coupled Nb5N6 THz Detector
Frontiers in Physics, 2021 In this study, we demonstrate an Nb5N6 terahertz (THz) detector with radio frequency (RF) choke-enhanced dipole antenna structure for 0.3 THz detection.
Chengtao Jiang +11 more
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Tailoring magnetization reversal of a single-domain bar nanomagnet via its end geometry
AIP Advances, 2021 Nanoscale single-domain bar magnets are building blocks for a variety of fundamental and applied mesoscopic magnetic systems, such as artificial spin ices, magnetic shape-morphing microbots, and magnetic majority logic gates.
Jianhua Li +14 more
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Characterize the Speed of a Photon-Number-Resolving Superconducting Nanowire Detector
IEEE Photonics Journal, 2020 Superconducting series nanowire single-photon detectors (SNDs) have been used for resolving photon numbers. But it can also exhibit a higher counting rate than a single superconducting nanowire single-photon detector (SNSPD), because the serial ...
Xu Tao +10 more
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Lightning in superconductors [PDF]
Scientific Reports, 2012 Crucially important for application of type-II superconductor films is the stability of the vortex matter--magnetic flux lines penetrating the material. If some vortices get detached from pinning centres, the energy dissipated by their motion will facilitate further depinning, and may trigger a massive electromagnetic breakdown.
Vestgarden, J I +3 more
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Dual-color terahertz spatial light modulator for single-pixel imaging
Light: Science & Applications, 2022 Liquid crystal metasurface based spatial light modulator is developed for terahertz dual-color compressive imaging. Significant improvement of imaging quality and speed is demonstrated using proposed auto-calibrated algorithms and frequency-switching ...
Weili Li +11 more
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Holographic superconductors [PDF]
Journal of High Energy Physics, 2008 It has been shown that a gravitational dual to a superconductor can be obtained by coupling anti-de Sitter gravity to a Maxwell field and charged scalar. We review our earlier analysis of this theory and extend it in two directions. First, we consider all values for the charge of the scalar field.
Hartnoll, Sean A. +2 more
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Evidence for current suppression in superconductor–superconductor bilayers
Superconductor Science and Technology, 2023 Abstract Superconducting radio frequency (SRF) cavities, which are critical components in many particle accelerators, need to be operated in the Meissner state to avoid strong dissipation from magnetic vortices. For a defect-free superconductor, the maximum attainable magnetic field for operation is set by the superheating field,
Md Asaduzzaman +7 more
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Nanomaterials, 2022 A bulk YBa2Cu3O7−δ (Y-123) superconductor synthesized by a thermal treatment method was added with different weight percentages (x = 0.0, 0.2, 1.0, 1.5, and 2.0 wt.%) of BiFeO3 (BFO) nanoparticle.
Nur Athirah Che Dzul-Kifli +10 more
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Nanomaterials, 2023 The effects of graphene addition on the phase formation and superconducting properties of (Bi1.6Pb0.4)Sr2Ca2Cu3O10 (Bi-2223) ceramics synthesized using the co-precipitation method were systematically investigated.
Siti Nabilah Abdullah +12 more
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