Results 111 to 120 of about 286,691 (306)

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

Methods for spatial direction finding of geoacoustic signals at Mikizha Lake in Kamchatka

E3S Web of Conferences, 2018
In the framework of the work, a spatial analysis of geoacoustic emissions properties recorded by a hydroacoustic receiver in a shallow Mikizha Lake, Kamchatkskiy kray, is carried out. The features of geoacoustic pulse registration are considered, methods
Shcherbina Albert, Solodchuk Alexandra
doaj   +1 more source

АНАЛИЗ ЯВЛЕНИЙ КОСМИЧЕСКОЙ ПОГОДЫ В 2014 ГОДУ ПО НАБЛЮДЕНИЯМ В СЕВЕРО-ВОСТОЧНОМ РЕГИОНЕ РОССИИ

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
Рассмотрены геофизические эффекты солнечных событий 2014 г. по системе наблюдений северо-востока России. Выявлены эффекты возбуждения волн в атмосферном электричестве приземного слоя воздуха в результате внезапного начала магнитной бури. Накануне событий
Smirnov, S.E., Bychkov, V.V., Mandrikova, O.V., Solovev, I.S., Polozov, A., Zalyaev, T.L., Khomutov, S.Y., Baishev, D.G., Poddelsky, I.N., Dumbrava, Z.F.   +9 more
doaj   +1 more source

On the disruption of the reciprocity principle during the daytime propagation of super long radiowaves around the earth [PDF]

Disruption of reciprocity principle during daytime propagation of superlong radio waves around ...
Baybulatov, R. B., Krasnushkin, P. E.
core   +1 more source

Ionic Control of Microstructure and Lubrication in Charged, Physically Cross‐Linked Hydrogels

Advanced Functional Materials, EarlyView.
Here, charged, physically cross‐linked poly(methacrylamide‐co‐methacrylic acid) hydrogels stabilized by a short‐range attractive, long‐range repulsive potential is investigated. This work uncovers how salt addition alters not only swelling, but also the microstructure and dynamics, near‐surface stiffness and charge, and ultimately, its lubricity. Salts
Alexander Deptula, Rosa M. Espinosa‐Marzal   +1 more
wiley   +1 more source

Radio-wave propagation in the non-Gaussian interstellar medium

, 2005
Radio waves propagating from distant pulsars in the interstellar medium (ISM), are refracted by electron density inhomogeneities, so that the intensity of observed pulses fluctuates with time.
Blandford R., Boldyrev S., Boldyrev S., Carl R. Gwinn, Goodman J., Ramachandran R., Rickett B. J., Stanislav Boldyrev, Sutton J. M., Uscinski B. J., Williamson I. P., Williamson I. P., Williamson I. P., Williamson I. P.   +13 more
core   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Human Gesture Classification Through Keypoint-Integrated Deep Learning on Millimeter-Wave Radar

IEEE Access
The capability to sense and classify targets through radar instead of optical sensors offers the advantage of non-line-of-sight operation, low battery consumption, and privacy, placing integrated sensing and communications at the core of 6G networks ...
Raied Caromi, Samuel Berweger, Anuraag Bodi, Jelena Senic, Neeraj Varshney, Jack Chuang, Camillo Gentile   +6 more
doaj   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Mechanical Properties of Architected Polymer Lattice Materials: A Comparative Study of Additive Manufacturing and CAD Using FEM and µ‐CT

Advanced Functional Materials, EarlyView.
This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker, Thierry Roland, Damien Favier, Antoine Egele, Michael Heymann, Cosima Stubenrauch   +5 more
wiley   +1 more source