Results 31 to 40 of about 944,511 (369)
Acrylic denture base repair (Part II): St-rength of acrylic denture base cured by four different techniques [PDF]
Al-Rafidain Dental Journal, 2006 Aim: To investigate the effect of repair techniques, surface treatment, and repair space design (3 mm space and no repair space) on the transverse, and tensile strengths of repaired denture base. Materials and methods: Four hundred and sixteen samples of
Repair acrylic denture base, microwave, thermo press. +1 more
doaj +1 more source
Angle-Dependent Synthesis Method for Holographic Multi-Feed Antennas
IEEE Open Journal of Antennas and Propagation, 2023 A novel synthesis method for holographic multi-feed antennas is presented to combine all sub-holograms into an angle-dependent shared holographic aperture.
Thomas Frey +4 more
doaj +1 more source
Microwave Lens for Polar Molecules [PDF]
Phys. Rev. Lett. 104, 253001 (2010), 2010 We here report on the implementation of a microwave lens for neutral polar molecules suitable to focus molecules both in low-field-seeking and in high-field-seeking states. By using the TE_11m modes of a 12 cm long cylindrically symmetric microwave resonator, Stark-decelerated ammonia molecules are transversally confined.
arxiv +1 more source
System Performance of a 79 GHz High-Resolution 4D Imaging MIMO Radar With 1728 Virtual Channels
IEEE Journal of Microwaves, 2022 Future driver assistance and autonomous driving systems require high-resolution 4D imaging radars that provide detailed and robust information about the vehicle's surroundings, even in poor weather or lighting conditions.
Dominik Schwarz +3 more
doaj +1 more source
Low-loss high-impedance circuit for quantum transduction between optical and microwave photons [PDF]
Mater. Quantum Technol. 2 025001 (2022), 2021 Quantum transducers between microwave and optical photons are essential for long-distance quantum networks based on superconducting qubits. An optically active self-assembled quantum dot molecule (QDM) is an attractive platform for the implementation of a quantum transducer because an exciton in a QDM can be efficiently coupled to both optical and ...
arxiv +1 more source
IEEE Photonics Journal, 2014 An equivalent-asymmetric coupling coefficient (EACC) distributed feedback laser (DFB) semiconductor laser with equivalent-half apodization grating (EHAG) structure is proposed and experimentally demonstrated for the first time; the EHAG profile is ...
Junshou Zheng +7 more
doaj +1 more source
Estimating Significant Wave Height from SAR with Long Integration Times
Applied Sciences, 2022 Synthetic aperture radar (SAR) is an important means of estimating significant wave height with obvious advantages of all-day, all-weather, high resolution and wide swath coverage.
Yawei Zhao +4 more
doaj +1 more source
Giant microwave photoresistivity in a high-mobility quantum Hall system [PDF]
Physical Review B 83, 121301(R) (2011), 2011 We report the observation of a remarkably strong microwave photoresistivity effect in a high-mobility two-dimensional electron system subject to a weak magnetic field and low temperature. The effect manifests itself as a giant microwave-induced resistivity peak which, in contrast to microwave-induced resistance oscillations, appears only near the ...
arxiv +1 more source
Microwave-induced inverse Faraday effect in superconductors [PDF]
Phys. Rev. Lett. 127, 087001 (2021), 2020 Inverse Faraday effect (IFE) in superconductors is proposed, where a static magnetization is generated under the influence of a circularly polarized microwave field. Classical modeling of the IFE explicitly provides superconducting gyration coefficient in terms of its complex conductivity.
arxiv +1 more source
Metamaterial Electromagnetic Cloak at Microwave Frequencies
Science, 2006 A recently published theory has suggested that a cloak of invisibility is in principle possible, at least over a narrow frequency band. We describe here the first practical realization of such a cloak; in our demonstration, a copper cylinder was “hidden”
D. Schurig +6 more
semanticscholar +1 more source