Results 121 to 130 of about 989,982 (368)

Circularly Polarized Perovskite Photodetector with Photocurrent Dissymmetry Factors of up to 1.95 Enabled by Liquid Crystal

Advanced Functional Materials, EarlyView.
Photodetectors made using perovskite single crystals in combination with free‐standing cholesteric liquid crystal (CLC) polymer films exhibit photocurrent dissymmetry factors up to 1.95 for 520 nm circularly polarized light (CPL) excitation. The CPL spectral response of the photodetector is tunable over a broad range of wavelengths by tuning the ...
Yifan Feng, Guanfeng Gao, Xuebing Wen, Zekai Chen, Jiaqi Huang, Chao Yang, Xiao‐Fang Jiang, Lakshminarayana Polavarapu, Guofu Zhou, Xiaowen Hu   +9 more
wiley   +1 more source

Modeling 5G-NR-Based Positioning Accuracy in Urban Environments

IEEE Access
Modeling phenomena influencing radiocommunication networks, such as 5G-NR, is a key aspect during their development and further optimization. In this paper, one proposes a model, for three different scenario types in urban environments, for user ...
Piotr Rajchowski, Luis M. Correia, Pedro Tareco, Krzysztof K. Cwalina   +3 more
doaj   +1 more source

Shape‐Reconfigurable Crack‐Based Strain Sensor with Ultrahigh and Tunable Sensitivity

Advanced Functional Materials, EarlyView.
A highly sensitive crack‐based sensor with tunable strain detection capabilities is demonstrated through controlled nanocrack formation in a line‐patterned shape memory polymer substrate. The sensor design integrates thermoplastic polyurethane and poly(lactic acid), enabling thermo‐responsive reconfiguration of crack geometry.
Seungjae Lee, Youngoh Lee, Cheolhong Park, Yun Goo Ro, Min Sub Kwak, Geonyoung Jeong, Junseo Park, Hyejin Lee, Pan Kyeom Kim, Sung‐Il Chung, Hyunhyub Ko   +10 more
wiley   +1 more source

Radio, memory and digital

, 2020
This contribution reflects on the state of the art of the digitisation processes of radio archives, looking at the various forms of digitisation of radio archives existing in Europe. We analyse the Dutch, Spanish and British models, the cases of informal archives and finally we pay particular attention to the Italian case, where in 2010 Rai inaugurated
Bonini, Tiziano, Borgnino, Andrea
openaire   +1 more source

Improving the Capacity Retention of Poly(vinylphenothiazine) as Battery Electrode Material by Pore Size Engineering of Porous N‐Doped Carbon Nanospheres as Conductive Additive

Advanced Functional Materials, EarlyView.
By using (meso)porous N‐doped carbon nanospheres with tailored intraparticle porosity and constant particle size as conductive carbon in PVMPT‐based organic battery electrodes, the complete volume of the carbon is accessible for the immobilization of PVMPT, resulting in high accessible specific capacities while maintaining a good rate capability and ...
Niklas Ortlieb, Bärbel Tengen, Verena Perner, Martin Winter, Birgit Esser, Peter Bieker, Anna Fischer   +6 more
wiley   +1 more source

Radio interferometric observations of two core-dominated triple radio sources at z>3

, 2010
Aims. We selected two radio quasars (J1036+1326 and J1353+5725) based on their 1.4-GHz radio structure, which is dominated by a bright central core and a pair of weaker and nearly symmetric lobes at ~10" angular separation.
Brocksopp, Cohen, Condon, D. Cseh, De Breuck, Fanaroff, Fomalont, Frey, Gergely, Jamrozy, K. É. Gabányi, Kaiser, L. I. Gurvits, Lara, Lister, Liu, Mack, Marecki, Merritt, Mosoni, Murphy, O’Dea, Readhead, Röttgering, S. Frey, Saikia, Schneider, Schoenmakers, Schoenmakers, Shepherd, Sirothia, Taylor, Urry, White, Z. Paragi   +34 more
core   +1 more source

Narrowband Detection via Charge Collection Narrowing Organic Photodetector Enabled by Low Bandgap Random Terpolymer for Biometric Sensing

Advanced Functional Materials, EarlyView.
A novel low‐bandgap random terpolymer is designed for narrow band detection in charge collection narrowing (CCN) based organic photodetectors. With a relative thin active layer (<1 µm), the CCN‐based devices achieved a narrowband response of 68 nm full‐width‐at‐half‐maximum at 916 nm, together with Responsivity values of 0.13 A W−1 and dark current of ...
Matilde Brunetta, Zhuoran Qiao, Adibah Zamhuri, Francesco Furlan, Martina Rimmele, Peter A. Gilhooly‐Finn, Lewis M. Cowen, Filip Aniés, Patipan Sukpoonprom, Stanley Cazaly, Julianna Panidi, Flurin Eisner, Martin Heeney, Bob C. Schroeder, Nicola Gasparini   +14 more
wiley   +1 more source

Analisis penggunaan media radio republik indonesia sebagai siaran pendidikan di Pekanbaru dan Kuantan Singingi

Jurnal Educatio: Jurnal Pendidikan Indonesia
Radio memiliki peran strategis dalam mendukung pendidikan di wilayah dengan keterbatasan akses infrastruktur digital. Penelitian ini bertujuan untuk menganalisis penggunaan media Radio Republik Indonesia (RRI) sebagai sarana penyiaran pendidikan di ...
Arwan Arwan, Syarifah Syarifah, Darmawati Darmawati   +2 more
doaj   +1 more source

Adventures in Radio Astronomy Instrumentation and Signal Processing [PDF]

arXiv, 2011
This thesis describes the design and implementation of several instruments for digitizing and processing analogue astronomical signals collected using radio telescopes. Modern radio telescopes have significant digital signal processing demands that are typically best met using custom processing engines implemented in Field Programmable Gate Arrays ...
arxiv  

A sixth-order continuous-time bandpass sigma-delta modulator for digital radio IF [PDF]

, 1999
J.A.E.P. van Engelen, R.J. van de Plassche, E. Stikvoort, Ardie Venes   +3 more
openalex   +1 more source