Results 51 to 60 of about 148,537 (317)

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Human Detection of Voice-Cloned Speech Under GSM, VoLTE and VoIP Conditions

Acoustics
The rapid progress of generative speech synthesis and voice-cloning technologies has enabled the creation of highly natural synthetic voices that pose a serious threat to telecommunication security.
Jakub Warzych, Michał Łuczyński, Janusz Klink   +2 more
doaj   +1 more source

Giant Anisotropy and High Second‐Order Nonlinearity of 3R‐MoS2 for Multifunctional Photonics

Advanced Materials, EarlyView.
Graphical abstract highlights, 3R‐polytype of MoS2 (3R‐MoS2) as a multifunctional photonic platform enabled by giant optical anisotropy and optical nonlinearities, demonstrating subdiffractional waveguiding, giant second‐harmonic (SH) generation, and high‐performance reflective polarization control.
Georgy Ermolaev, Dmitriy Grudinin, Liudmila Klimova, Adilet Toksumakov, Mikhail Gubin, Anton Minnekhanov, Aleksandr Slavich, Mikhail Mironov, Arslan Mazitov, Dmitry Yakubovsky, Nikolay Pak, Andrey Vyshnevyy, Ivan Kruglov, Gleb Tselikov, Alexei Prokhorov, Aleksey Arsenin, Kostya S. Novoselov, Valentyn Volkov   +17 more
wiley   +1 more source

ICT Aid Flows From China to African Countries: A Communication Network Perspective

International Journal of Communication, 2020
The challenge in evaluating China’s foreign aid has always been the unavailability of reliable data sets. This study constitutes the first analysis of the AidData data set from a communication network perspective.
Rong Wang, François Bar, Yu Hong
doaj  

Reliable and Reusable All‐Solid‐State Contact‐Type Pre‐Lithiation Platform for High‐Performance All‐Solid‐State Batteries

Advanced Materials, EarlyView.
A reusable contact‐type pre‐lithiation platform enables uniform, precisely controllable pre‐lithiation at low stack pressure, suppressing interfacial degradation and thereby markedly improving initial Coulombic efficiency and cycling performance in all‐solid‐state batteries.
Yunho Lee, Yongjun Kwon, Juhyeong Noh, Seok Hun Kang, Kyubeen Kang, Junhyeok Choi, Young‐Gi Lee, Jaecheol Choi, Hyeong Min Jin, Yong Min Lee, Ju Young Kim   +10 more
wiley   +1 more source

Photoactivable Surfactant Design for In Situ Stabilization of Hydrogel Bioelectronics

Advanced Materials, EarlyView.
Photoactivable surfactant additive enables in situ stabilization of hydrogel bioelectronics. ABSTRACT Conductive polymer hydrogels offer unique advantages for soft, stretchable biointerfaces by combining tissue‐like mechanics with high ionic conductivity.
Seungyeon Lee, Donggyun Lee, Soo‐Hwan Lee, Yuri Lee, Jooyeun Chong, Gunho Chang, Hyunjun Kim, Aejin Kim, Kyung Su Kim, Jahyun Koo, Hyojin Lee, Jiheong Kang   +11 more
wiley   +1 more source

Analisis Korelasi Faktor Perilaku Konsumen terhadap Keputusan Penggunaan Teknologi Komunikasi Voip

ComTech, 2014
The advancement of communication technology that is combined with computer and the Internet brings Internet Telephony or VoIP (Voice over Internet Protocol).
Budi Yulianto
doaj   +1 more source

Defect‐Engineered Electrically‐Injected Germanium‐on‐Insulator Waveguide Light Emitters at Telecom Wavelengths

Advanced Electronic Materials, 2023
Ge‐on‐insulators (GOIs) have been extensively explored as a potential platform for electronic‐photonic integrated circuits (EPICs), enabling various emerging applications.
Po‐Lun Yeh, Bo‐Rui Wu, Yi‐Wei Peng, Chen‐Wei Wu, Yue‐Tong Jheng, Kwang Hong Lee, Qimiao Chen, Chuan Seng Tan, Guo‐En Chang   +8 more
doaj   +1 more source

Reversible Hydration Tuning of Polar Order and Large Nonlinear Optical Response in a 2D van der Waals Crystal, LiInP2S6

Advanced Materials, EarlyView.
Hydration‐induced symmetry breaking transforms layered LiInP2S6${\rm LiInP}_2{\rm S}_6$ from a nonpolar to a chiral‐polar phase, producing a giant enhancement of non‐resonant second‐harmonic generation. The reversible tuning of polar order through molecular intercalation establishes a strategy for dynamically controlling nonlinear optical ...
Jadupati Nag, Saugata Sarker, Michael J. Waters, Safdar Imam, Himirkanti Sarkar, Anthony Richardella, James M. Rondinelli, Mercouri G. Kanatzidis, Venkatraman Gopalan   +8 more
wiley   +1 more source

High performance parallel simulation of telecommunication networks [PDF]

, 1994
The paper describes techniques used to obtain stable high performance from parallel simulation of large telecommunication networks. A basic parallel simulation model of a telecommunication network and the conservative implementation of the model are ...
Kalantery, N., Winter, S.
core