Results 121 to 130 of about 22,239 (310)
Advanced Science, EarlyView.A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang +11 more
wiley +1 more source
Inverse Designed Plasmonic Metasurface with ppb Optical Hydrogen Detection
, 2022 Plasmonic sensors rely on optical resonances in metal nanoparticles and are typically limited by their broad spectral features. This constraint is particularly taxing for optical H2 sensors, in which hydrogen is absorbed inside optically-lossy Pd ...
Ferry Anggoro Ardy, Nugroho +7 more
core +1 more source
Study of Free‐Space Optical Quantum Network: Review and Prospectives
Advanced Science, EarlyView.Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley +1 more source
Nonreciprocal Nongyrotropic Magnetless Metasurface
, 2017 We introduce a nonreciprocal nongyrotropic magnetless metasurface. In contrast to previous nonreciprocal structures, this metasurface does not require a biasing magnet, and is therefore lightweight and amenable to integrated circuit fabrication. Moreover,
Shulabh Gupta +9 more
core +1 more source
Broadband and Chiral Infrared Plasmonic Metasurface Absorbers
, 2020 Infrared metasurface perfect light absorbers and thermal emitters play important roles in many promising applications such as thermal imaging, molecular sensing, thermophotovoltaics, and thermal energy harvesting.
Yang, Xiaodong, Gao, Jie
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Advanced Science, EarlyView.A nano‐plasma device enables watt‐level on‐chip THz generation through picosecond switching triggered by secondary electron emission avalanche. An ultra‐dense electron sheet initiates nano‐plasma formation within a ∼100 nm gap, driving rapid energy release into an integrated resonator.
Guangyu Sun +4 more
wiley +1 more source
Physical Review LettersPolar dielectrics with low crystal symmetry and sharp phonon resonances can support hyperbolic shear polaritons - highly confined surface modes with frequency-dependent optical axes and asymmetric dissipation features. So far, these modes have been observed only in bulk natural materials at mid-infrared frequencies, with properties limited by available
Enrico M. Renzi +3 more
openaire +3 more sources
Tunable Water-based Microwave Metasurface
, 2017 A water-based dynamically tunable microwave metasurface is developed and experimentally investigated. A simple approach to tune the metasurface properties by changing the shape of water-based unit cells by gravitation force is proposed.
Andrei Andryieuski +11 more
core +1 more source
A Dual‐Channel Synergistic Ultrasensitive Biosensor for Tumor Liquid Biopsy
Advanced Science, EarlyView.ABSTRACT Liquid biopsy technology, which detects circulating tumor DNA (ctDNA) in cerebrospinal fluid, plays a crucial role in the early diagnosis and precision treatment of gliomas. However, the intrinsically low abundance and rapid clearance of ctDNA pose substantial challenges for conventional analytical techniques, such as droplet digital PCR and ...
Yu Sun +12 more
wiley +1 more source
Reconfigurable metasurface design via coplanar self-biasing structure
Results in PhysicsReconfigurable metasurface enriches the functional integrated design into the originally limited space. Electrical control, through the external power supply to control the electromagnetic response control, is a common and simple control method. However,
Bingyue Qu +9 more
doaj +1 more source