Results 51 to 60 of about 852,457 (267)

Radio frequency optimization of a Global System for Mobile (GSM) network [PDF]

, 2008
Includes bibliographical ...
Sharma, Bishal
core  

Fuzzy based load and energy aware multipath routing for mobile ad hoc networks [PDF]

, 2015
Routing is a challenging task in Mobile Ad hoc Networks (MANET) due to their dynamic topology and lack of central administration. As a consequence of un-predictable topology changes of such networks, routing protocols employed need to accurately capture ...
Ali, M., Shahrabi, A., Stewart, B.G., Vallavaraj, A.   +3 more
core   +3 more sources

RoHS‐Compliant, Cu‐Zn‐In‐Se‐Based Core/Multi‐shell Quantum Dots with Efficient and Tunable Short‐Wave Infrared Emission

Advanced Functional Materials, EarlyView.
An innovative combination of size‐controlled template synthesis, partial cation exchange reactions, and dual shell passivation offers a new class of RoHS‐compliant, heavy metal‐free Cu‐Zn‐In‐Se/ZnS/Al2O3 core/shell/shell quantum dots (QDs), exhibiting long‐range tunability, highly efficient SWIR emission with remarkably narrow photoluminescence ...
Avijit Saha, Morena Cervino, Hossein Roshan, René Hübner, Angelika Wrzesińska‐Lashkova, Christine Steinbach, Yana Vaynzof, Francesco Di Stasio, Vladimir Lesnyak   +8 more
wiley   +1 more source

Fibre-optic delivery of time and frequency to VLBI station [PDF]

, 2017
The quality of Very Long Baseline Interferometry (VLBI) radio observations predominantly relies on precise and ultra-stable time and frequency (T&F) standards, usually hydrogen masers (HM), maintained locally at each VLBI station.
Ablewski, P., Binczewski, A., Bober, M., Buczek, Ł., Campbell, R. M., Ciuryło, R., Cygan, A., Kołodziej, J., Krehlik, P., Lipiński, M., Lisak, D., Marecki, A., Masłowski, P., Morzyński, P., Nawrocki, J., Nogaś, P., Pazderski, E., Pieczerak, J., Turza, K., Zawada, M., Śliwczyński, Ł.   +20 more
core   +1 more source

All‐Aqueous Pullulan Fibers Enabling Visible‐to‐Near‐Infrared Waveguiding with Mechanical and Thermal Resilience

Advanced Functional Materials, EarlyView.
Pullulan, a biomass‐derived polysaccharide, is transformed into transparent optical fibers using a solvent‐free borax hydrogel‐spinning method. The fibers outperform PMMA with ≈200 MPa tensile strength and 200 °C stability, while uniquely guiding visible‐to‐NIR light and enabling additive‐free humidity sensing.
Yuya Fukata, Aayush Kumar Jaiswal, Ari Hokkanen, Hannes Orelma, Tadahisa Iwata   +4 more
wiley   +1 more source

Ultra-stable long distance optical frequency distribution using the Internet fiber network

, 2012
We report an optical link of 540 km for ultrastable frequency distribution over the Internet fiber network. The stable frequency optical signal is processed enabling uninterrupted propagation on both directions.
Adil Haboucha, Amy-Klein, Anne Amy-Klein, Ashby, Bruno Chanteau, Chou, Christian Chardonnet, Friebe, Fujieda, Fujieda, Giorgio Santarelli, Grosche, Guena, Hong, Huntemann, Jiang, Katori, Kéfélian, Li, Lopez, Lopez, Lopez, Newbury, Olivier Lopez, Predehl, Sherman, Sliwczynski, Swallows, Terra, Weyers, Yamaguchi   +30 more
core   +2 more sources

Spatially‐Controlled Planar Guided Crystallization of Low‐Loss Phase Change Materials for Programmable Photonics

Advanced Materials, EarlyView.
The concept of spatially‐controlled planar guided crystallization is a novel method for programming the growth of optically homogeneous low‐loss Sb2S3 phase‐change material (PCM), leveraging the directional crystallization within confined channels.
Fouad Bentata, Arnaud Taute, Capucine Laprais, Régis Orobtchouk, Eva Kempf, Alban Gassenq, Yves Pipon, Michele Calvo, Valérie Martinez, Stéphane Monfray, Guillaume Saint‐Girons, Nicolas Baboux, Hai Son Nguyen, Xavier Letartre, Lotfi Berguiga, Patrice Genevet, Sébastien Cueff   +16 more
wiley   +1 more source

A survey on OFDM-based elastic core optical networking [PDF]

, 2013
Orthogonal frequency-division multiplexing (OFDM) is a modulation technology that has been widely adopted in many new and emerging broadband wireless and wireline communication systems.
De Leenheer, Marc, Morea, A, Mukherjee, B, Zhang, GY   +3 more
core   +2 more sources

A Versatile Materials Class for Solution‐Processed Optics and Photonics Based On Titanium Oxide Hydrates and Polyalcohols: A Perspective

Advanced Materials, EarlyView.
A new, solution‐processable class of optical materials based on molecular hybrids of metal oxide hydrates and commodity polymers is discussed here, including their synthesis, processing into thin films, patterning, and photonic structures realized to date.
Victoria Quirós‐Cordero, Alex H. Balzer, Stefan Bachevillier, Nissa Watkins, António Fernandes Ferreira, Joseph Mushyakov, Mehul Dhoot, Carlos Silva‐Acuña, Paul N. Stavrinou, Natalie Stingelin   +9 more
wiley   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source