Results 71 to 80 of about 146,031 (367)

Nanostructures for Photonics and Optoelectronics

Nanomaterials, 2022
As microelectronic technology approaches the limit of what can be achieved in terms of speed and integration level, there is an increasing interest in moving from electronics to photonics, where photons and light beams replace electrons and electrical currents, which will result in higher processing speeds and lower power consumption [...]
openaire   +3 more sources

Influence of an Al‐Doped ZnO Interface Layer on the Thermochromic Properties of VO2 Thin Films Deposited by RF Magnetron Sputtering

Advanced Engineering Materials, EarlyView.
Herein the metal‐to‐insulator transition is investigated when depositing vanadium dioxide (VO2) on glass or aluminum‐doped zinc oxide (AZO). O2 flow tuning during the deposition and additional post annealing are effective to control the metal‐to‐insulator transition. However, the VO2/AZO/glass stack reveals an increase in the transition temperature and
Eduard Llorens Balada, Evgeniy Shkondin, Stela Canulescu, Eugen Stamate   +3 more
wiley   +1 more source

3D photonic crystals for direct applications in light emitting devices [PDF]

, 2018
In this paper, we present IP-Dip polymer-based Photonic Crystals (PhCs), which are more and more attractive for photonic devices. These structures offer simple and cheap solutions, how to improve optical properties of these devices. In our experiment, we
Goraus, Matej, Pudiš, Dušan, Urbancová, Petra   +2 more
core   +2 more sources

Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality

Advanced Engineering Materials, EarlyView.
Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi, Jiheon Kim, Jaemin Lee, Xinqi Chen, Byungseok Seo, Wonjoon Choi   +5 more
wiley   +1 more source

Dependence of Ge/Si Avalanche Photodiode Performance on the Thickness and Doping Concentration of the Multiplication and Absorption Layers

Inorganics, 2023
In this article, the performance and design considerations of the planar structure of germanium on silicon avalanche photodiodes are presented. The dependences of the breakdown voltage, gain, bandwidth, responsivity, and quantum efficiency on the reverse
Hazem Deeb, Kristina Khomyakova, Andrey Kokhanenko, Rahaf Douhan, Kirill Lozovoy   +4 more
doaj   +1 more source

Determination of phase noise spectra in optoelectronic microwave oscillators: a Langevin approach [PDF]

, 2008
We introduce a stochastic model for the determination of phase noise in optoelectronic oscillators. After a short overview of the main results for the phase diffusion approach in autonomous oscillators, an extension is proposed for the case of optoelectronic oscillators where the microwave is a limit-cycle originated from a bifurcation induced by ...
arxiv   +1 more source

Amplification‐Free, Sequencing‐Free, Detection of Viral RNAs with Variant Specification by Discrete Nanocounting

Advanced Functional Materials, EarlyView.
Integrating selective RNA shortcut, targeted gene isolation, and micro‐arrayed nanoimaging, the NanoPick‐array platform excels in detecting severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) at just 60 copies µL−1 and accurately differentiating variants at the single‐nucleotide level. It ensures 100% accuracy for samples with cycle threshold (
Zixun Wang, Xi Zhao, Wan‐Mui Chan, Xianglin Ji, Linfeng Huang, Xi Xie, Wei Li, Wenjun Zhang, Kelvin Kai‐Wang To, Peng Shi   +9 more
wiley   +1 more source

Benchmark Investigation of Band-Gap Tunability of Monolayer Semiconductors under Hydrostatic Pressure with Focus-On Antimony

Nanomaterials, 2020
In this paper, the band-gap tunability of three monolayer semiconductors under hydrostatic pressure was intensively investigated based on first-principle simulations with a focus on monolayer antimony (Sb) as a semiconductor nanomaterial.
Xiangyu Dai, Zhengfang Qian, Qiaolu Lin, Le Chen, Renheng Wang, Yiling Sun   +5 more
doaj   +1 more source

Optimized Design and Simulation of Optical Section in Electro-Reflective Modulators Based on Photonic Crystals Integrated with Multi-Quantum-Well Structures

Optics, 2023
In the design of photonic integrated circuits (PICs), the optical connections of the PIC surface, along with the electronic components of the chips, are significant issues. One of the optoelectronics components that utilizes these surface connections are
Mohammad Mahdi Khakbaz Heshmati, Farzin Emami   +1 more
doaj   +1 more source

Performance characteristics of positive and negative delayed feedback on chaotic dynamics of directly modulated InGaAsP semiconductor lasers [PDF]

, 2008
The chaotic dynamics of directly modulated semiconductor lasers with delayed optoelectronic feedback is studied numerically. The effects of positive and negative delayed optoelectronic feedback in producing chaotic outputs from such lasers with nonlinear gain reduction in its optimum value range is investigated using bifurcation diagrams.
arxiv   +1 more source