Results 91 to 100 of about 194,246 (337)

Plasmonic Nanoparticle‐on‐Nanoslit Antenna as Independently Tunable Dual‐Resonant Systems for Efficient Frequency Upconversion

Advanced Optical Materials, EarlyView.
The nanoparticle‐on‐slit (NPoS) cavity has emerged as a sub‐wavelength platform for efficient coherent frequency conversion between mid‐infrared and visible light, and for nanoscale nonlinear vibrational spectroscopy. This numerical study identifies the NPoS quasi‐normal modes, relates them to known nanogap patterns, and predicts the relative ...
Huatian Hu, Zhiwei Hu, Christophe Galland, Wen Chen   +3 more
wiley   +1 more source

A Hybrid Heuristic Approach to Provider Selection and Task Allocation Problem in Telecommunications with Varying QoS Levels

International Journal of Computational Intelligence Systems, 2017
In this research, we study a cost minimization problem for a firm that acquires capacity from providers to accomplish daily operations on telecommunication networks.
Nihat Kasap, Berna Tektaş Sivrikaya, Hasan Hüseyin Turan, Dursun Delen   +3 more
doaj   +1 more source

Illuminating Quantum Phenomena in 2D Materials: The Power of Optical Spectroscopy

Advanced Optical Materials, EarlyView.
Atomically thin 2D materials host quantum tunnelling, plasmonic and excitonic phenomena driven by reduced dimensionality and strong many‐body interactions. This review links these effects to state‐of‐the‐art optical probes—NSOM, pump–probe, CARS, TRR, and optical frequency comb spectroscopy—highlighting how their ultrahigh spatial–temporal resolution ...
Yuhui Zhou, Jiaru Zhang, Guanghui Ren, Bao Yue Zhang, Jian Zhen Ou   +4 more
wiley   +1 more source

Does Urban Fixed-Line Telecommunication Density Influence Profitability and Operational Efficiency in Greece's Telecommunications Industry?

Finance, Accounting and Business Analysis
Purpose: This study investigates the influence of Urban Fixed-Line Telecommunication Density on financial performance in Greece's telecommunications industry, focusing on the nation’s three leading telecom companies. Design/Methodology/Approach: Using
Emmanouil Taxiarchis Gazilas
doaj   +1 more source

Design of an Innovative Business Model for Mobile Virtual Network Operators

Kvalita Inovácia Prosperita, 2016
Purpose: The article studies a possible innovative business model for sustainable competitive advantage in current communication technologies. Methodology/Approach: This ethnographic approach consists of contextual interviews with company managers and ...
Miroslav Špaček, Emil Vacík
doaj   +1 more source

Telecommunications: Post Office under Fire [PDF]

, 1969

openalex   +1 more source

Polaritons in Non‐Fullerene Acceptors for High Responsivity Angle‐Independent Organic Narrowband Infrared Photodiodes

Advanced Optical Materials, EarlyView.
High‐performance narrowband NIR organic photodiodes are essential for miniaturized imaging, sensing, and wearable systems, yet existing approaches suffer from angular sensitivity and limited material compatibility. This work demonstrates the first polariton‐enhanced OPDs with angle‐independent response, sub‐45 nm bandwidth, and record responsivity (0 ...
Ahmed Gaber Abdelmagid, Zhuoran Qiao, Boudewijn Coenegracht, Gaon Yu, Hassan A. Qureshi, Thomas D. Anthopoulos, Nicola Gasparini, Konstantinos S. Daskalakis   +7 more
wiley   +1 more source

Telecommunications [PDF]

, 1969

openalex   +1 more source

Smart Theremin Based on Electromagnetic Metasurfaces for Fine Dual‐Hand Perception

Advanced Optical Materials, EarlyView.
The proposed Meta‐Theremin leverages a frequency‐spatial multiplexing metasurface to enable robust dual‐hand perception by shielding environmental noise and confining EM fields to interaction zones. Its physics‐informed neural network decouples hand‐specific echoes, enhancing accuracy.
Che Liu, Yisu Huang, Mengyuan Zhang, Yiming Ma, Wenming Yu, Jiajing Wu, Lianlin Li, Qian Ma, Tie Jun Cui   +8 more
wiley   +1 more source

Intense Photoluminescence in Erbium‐Ion‐Implanted Lithium Niobate Thin Films and Its Interplay with Lattice Defects

Advanced Optical Materials, EarlyView.
Intense photoluminescence at room temperature from erbium‐ion‐implanted, single crystalline lithium niobate thin films on insulator (LNOI) is achieved. The interplay between lattice defects and photoluminescence in erbium‐ implanted LNOI thin films is investigated.
Liangling Wang, Sören Lerner, Houbin Zhu, Xiaojun Cui, Binge Zeng, Fengkai Wei, Elke Wendler, Carsten Ronning   +7 more
wiley   +1 more source