Results 41 to 50 of about 27,248 (265)

Selective broadband absorption by mode splitting for radiative cooling

Optics Express, 2022
A plasmonic-photonic structure based on colloidal lithography was designed for a scalable radiative cooling system and its absorption properties were theoretically investigated. The structure comprises a SiO2 core, which is on top of an Au reflector and partially covered by an indium tin oxide (ITO) shell. This simple and scalable structure possesses a
Matsumori, Kishin, Fujimura, Ryushi, Retsch, Markus   +2 more
openaire   +2 more sources

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

Investigation on Low-Frequency and Broadband Sound Absorption of the Compact Anechoic Coating Considering Hydrostatic Pressure

Journal of Marine Science and Engineering
The anechoic coating capable of absorbing sound energy in low frequencies within broadband is essential to conceal underwater vehicles. However, the geometric deformation and modification of mechanical parameters under hydrostatic pressure affect the ...
Xinsheng Fang, Xiao Pan, Xiaowei Zhang, Dongsheng Li, Xuewen Yin, Yabin Jin, Weibo Wang, Wenwei Wu   +7 more
doaj   +1 more source

Semiconductor nanowire metamaterial for broadband near-unity absorption

Scientific Reports, 2022
AbstractThe realization of a semiconductor near-unity absorber in the infrared will provide new capabilities to transform applications in sensing, health, imaging, and quantum information science, especially where portability is required. Typically, commercially available portable single-photon detectors in the infrared are made from bulk ...
Burak Tekcan, Brad van Kasteren, Sasan V. Grayli, Daozhi Shen, Man Chun Tam, Dayan Ban, Zbigniew Wasilewski, Adam W. Tsen, Michael E. Reimer   +8 more
openaire   +4 more sources

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Gradient index metamaterials for broadband underwater sound absorption

APL Materials
The underwater broadband anechoic coating is highly demanded in acoustic stealth for underwater vehicles. In this work, we propose a gradient index metamaterial for broadband underwater sound absorption, which is further experimentally validated under ...
Xiao Pan, Xinsheng Fang, Xuewen Yin, Yan Li, Yongdong Pan, Yabin Jin   +5 more
doaj   +1 more source

Broadband THz Absorption of Microbolometer Array Integrated with Split-Ring Resonators

Nanoscale Research Letters, 2020
In this paper, a periodic structure based on metallic split-ring resonators is integrated into micro-bridge structures of THz microbolometer array to achieve high THz wave absorption in a wide frequency range. With a small unit size of 35 μm × 35 μm, the
Shuming Fan, Jun Gou, Qingchen Niu, Zheyuan Xie, Jun Wang   +4 more
doaj   +1 more source

Ultra-Broadband Sound Absorbing Materials Based on Periodic Gradient Impedance Matching

Frontiers in Materials, 2022
Ultra-broadband sound absorption with periodic gradient impedance matching is of great concern in the research of acoustic materials. This study investigates the impedance matching of composite acoustic metamaterials comprising micro-perforated plates ...
Fei Wu, Xiao Zhang, Zegang Ju, Jiang Zhao, Man Hu, Mingyuan Gao, Jun Luo, Huayan Pu   +7 more
doaj   +1 more source

Theory of two-photon absorption with broadband squeezed vacuum

Physical Review A, 2022
We present an analytical quantum theoretic model for non-resonant molecular two-photon absorption (TPA) of broadband, spectrally multi-mode squeezed vacuum, including low-gain (isolated entangled photon pairs or EPP) and high-gain (bright squeezed vacuum or BSV) regimes.
Michael G. Raymer, Tiemo Landes
openaire   +2 more sources