Results 71 to 80 of about 17,964 (305)

Development of concept of near-field technology in designing effective small-aperture microwave antennas [PDF]

Радиофизика и электроника, 2019
Subject and purpose. This article is devoted to the review of the original works of the authors on studying the effective small-sized individual radiators of various types using near-field technology. Methods and methodology.
I. Ivanchenko, N. Popenko, M. Khruslov, R. Chernobrovkin, S. Radionov, V. Pischikov   +5 more
doaj   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

The wonderful complexity of the Mira AB system [PDF]

, 2014
We have mapped the CO(3-2) line emission around the Mira AB system at 0.5 resolution using the Atacama Large Millimeter/submillimeter Array (ALMA). The CO map shows amazing complexity.
Baudry, A., Cox, N. L. J., De Beck, E., Humphreys, E. M. L., Jorissen, A., Kerschbaum, F., Lagadec, E., Leal-Ferreira, M. L., Lindqvist, M., Maercker, M., Mayer, A., Mohamed, S., Montez, R., Olofsson, H., Paladini, C., Pérez-Sánchez, A., Ramstedt, S., Sacuto, S., Vlemmings, W. H. T., Wittkowski, M.   +19 more
core   +4 more sources

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

Distance Measurement Error Reduction Analysis for the Indoor Positioning System [PDF]

Mehran University Research Journal of Engineering and Technology, 2012
This paper presents the DME (Distance Measurement Error) estimation analysis for the wireless indoor positioning channel. The channel model for indoor positioning is derived and implemented using 8 WLAN (Wireless Local Area Network) antennas system ...
Tariq Jamil SaifullahKhanzada, Javed Ali Baloch, Sania Bhatti   +2 more
doaj  

Volumetric metamaterials versus impedance surfaces in scattering applications

Scientific Reports, 2021
Artificially created media allow employing material parameters as additional valuable degrees of freedom in tailoring electromagnetic scattering. In particular, metamaterials with either negative permeability or permittivity allow creating deeply ...
S. Kosulnikov, D. Filonov, A. Boag, P. Ginzburg   +3 more
doaj   +1 more source

Electronic scanning of 2-channel monopulse patterns Patent [PDF]

, 1970
Monopulse scanning network for scanning volumetric antenna ...
Schmidt, R. F.
core   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source

Deployment verification of large CFRP helical high-gain antenna for AIS signals [PDF]

, 2011
Deployment verification of large CFRP helical high-gain antenna for AIS ...
Baeger, Annette, Block, Joachim, Hauer, Lars-Christian, Schuetze, Martin, Sproewitz, Tom   +4 more
core   +1 more source

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