Results 101 to 110 of about 758,632 (333)

Ultra-wideband SAR Tomography on asteroids

Radio Science, 2020
Abstract Our knowledge of the internal structure of asteroids is currently indirect and relies on inferences from remote sensing observations of surfaces. However, it is fundamental for understanding small bodies' history and for planetary defense missions.
Oriane Gassot, Alain Herique, Wenzhe Fa, Jun Du, Wlodek Kofman   +4 more
openaire   +3 more sources

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

An Ultra-thin Compact Wideband Metamaterial Absorber [PDF]

Radioengineering, 2018
This article reports an ultra-thin, compact metamaterial absorber with wideband absorption at microwave frequencies. The proposed structure contains circular and rectangular split rings, and is ultra-thin of 0.049λ0 thickness with respect to the center ...
S. Ramya, I. Srinivasa Rao
doaj  

Increased Endurance of Nonvolatile Photonics Enabled by Nanostructured Phase‐Change Materials

Advanced Materials, EarlyView.
Tapered and segmented islands of the phase‐change material (PCM) antimony selenide (Sb2Se3) integrated on silicon microring resonators enable ultra‐low‐loss, high‐endurance, non‐volatile photonic tuning. The nanostructured PCM design suppresses interfacial scattering and thermal stress, achieving record endurance over 100 million electrical switching ...
Jayita Dutta, Andrew Tang, Brian Mills, Rui Chen, Arnab Manna, Gokul Nath SJ, Virat Tara, Dennis Callahan, Cosmin Constantin Popescu, Juejun Hu, Arka Majumdar   +10 more
wiley   +1 more source

Ultra-Wideband Aided Fast Localization and Mapping System

, 2017
This paper proposes an ultra-wideband (UWB) aided localization and mapping system that leverages on inertial sensor and depth camera. Inspired by the fact that visual odometry (VO) system, regardless of its accuracy in the short term, still faces ...
Nguyen, Thien-Minh, Wang, Chen, Xie, Lihua, Zhang, Handuo   +3 more
core   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Packed Ultra-wideband Mapping Array (PUMA): A Radio Telescope for Cosmology and Transients [PDF]

, 2019
PUMA is a proposal for an ultra-wideband, low-resolution and transit interferometric radio telescope operating at $200-1100\,\mathrm{MHz}$. Its design is driven by six science goals which span three science themes: the physics of dark energy (measuring ...
A. Slosar, Tzu-Ching Chang, Z. Ahmed, A. Stebbins, C. Sheehy, P. Bull, Evan J. Arena, J. Shaw, M. White, W. Tyndall, Adrian Liu, N. Sehgal, D. Alonso, R. Davé, D. Parkinson, C. Ng, P. O'Connor, A. Nomerotski, J. Prochaska, E. Silverstein, D. Rapetti, C. Dvorkin, E. Schaan, R. Ansari, R. Flauger, L. Knox, P. Meerburg, B. Saliwanchik, S. Foreman, H. Padmanabhan, T. McClintock, K. Bandura, R. Shirley, D. Karagiannis, S. Ferraro, M. Johnson, A. Kaurov, A. V. Engelen, N. Battaglia, M. Amin, G. Tucker, M. Münchmeyer, D. Jacobs, P. Stankus, Daniel Green, A. Obuljen, K. Masui, L. Newburgh, K. Moodley, J. Blazek, E. Castorina, E. Sheldon, F. Villaescusa-Navarro, Yian Ma, P. Timbie, J. Frisch, J. Dillon, B. Wallisch, G. Holder, M. Loverde, T. Slatyer, L. Connor, S. Rajendran   +62 more
semanticscholar   +1 more source

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

Advanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair, Hrisheekesh Thachoth Chandran, Karl Leo, Hans Kleemann   +3 more
wiley   +1 more source

Research and application of visual synchronous positioning and mapping technology assisted by ultra wideband positioning technology

Systems and Soft Computing
With the development of the intelligent era, improving the positioning accuracy and operational stability of robots has become an urgent problem that needs to be solved.
Yiran Zhang, Lina Dong
doaj   +1 more source

A Novel Planar Fractal Antenna with CPW-Feed for Multiband applications [PDF]

, 2013
In this paper, a multiband antenna using a novel fractal design is presented. The antenna structure is formed by inscribing a hexagonal slot within a circle.
Joseph, S., Mohanan, P., Mridula, S., Paul, B.   +3 more
core   +1 more source