Results 71 to 80 of about 2,385,918 (340)

Light‐Emitting Diodes Based on Metal Halide Perovskite and Perovskite Related Nanocrystals

open access: yesAdvanced Materials, EarlyView.
The review covers the past and current developments in light‐emitting diodes (LEDs) exploiting nanocrystals of halide perovskites and perovskite‐related materials. The review examines the aspects of material optimizations, device engineering, and applications.
Ying Liu   +7 more
wiley   +1 more source

Hurdles and recent developments for CdS and chalcogenide‐based electrode in “Solar electro catalytic” hydrogen generation: A review

open access: yesElectrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022
Abstract There are tremendous efforts to realize the idea of employing photoelectrochemical (PEC) technology for generating chemical energy from solar energy. The most important feature of this technology is to coordinate the energetics of an electrochemical reaction with the solar spectrum.
Alka Pareek, Pramod H. Borse
wiley   +1 more source

Revenge of the Bell Heads: How the Net Heads Lost Control of the Internet [PDF]

open access: yesarXiv, 2001
A dichotomy in regulatory treatment and corporate cultures exists between Internet Service Providers (ISPs) and telecommunication carriers. Telephone company executives (Bell Heads) may resent regulation, but they accept their fate and work creatively to exploit anomalies and opportunities to secure a regulation-conferred competitive advantage.
arxiv  

Smart Dust for Chemical Mapping

open access: yesAdvanced Materials, EarlyView.
This review article explores the advancement of smart dust networks for high‐resolution spatial and temporal chemical mapping. Comprising miniature, wireless sensors, and communication devices, smart dust autonomously collects, processes, and transmits data via swarm‐based communication.
Indrajit Mondal, Hossam Haick
wiley   +1 more source

To Optimally Design Microstrip Nonuniform Transmission Lines as Lowpass Filters [PDF]

open access: yesJournal of Telecommunications,Volume 2, Issue 2, p139-142, May 2010, 2010
A method is proposed to optimally design the Microstrip Nonuniform Transmission Line (MNTLs) as lowpass filters. Some electrical and physical restrictions are used to design MNTLs. To optimally design the MNTLs, their strip width is expanded as truncated Fourier series, firstly.
arxiv  

Doubly resonant photonic antenna for single infrared quantum dot imaging at telecommunication wavelengths [PDF]

open access: yes, 2016
Colloidal Quantum dots (CQDs) are nowadays one of the cornerstones of modern photonics as they have led to the emergence of new optoelectronic and biomedical technologies. However, the full characterization of these quantum emitters is currently restricted to the visible wavelengths and it remains a key challenge to optically probe single CQDs ...
arxiv   +1 more source

Evaluating the Local Bandgap Across inxGa1‐xas Multiple Quantum Wells in a Metamorphic Laser via Low‐Loss EELS

open access: yesAdvanced Materials Interfaces, EarlyView.
This research explores local bandgap, composition, and strain variations across InxGa₁−xAs quantum wells within a metamorphic laser structure using high‐resolution scanning transmission electron microscopy (STEM) and low‐loss electron energy loss spectroscopy (EELS). Results reveal significant inhomogeneities, particularly near interfaces, with bandgap
Nicholas Stephen   +10 more
wiley   +1 more source

Signal Processing in Telecommunications with Forward Correction of Errors

open access: yesIndonesian Journal of Electrical Engineering and Computer Science, 2018
The development of mechanisms of increase efficiency of frequency-shift keying signals processing in telecommunications using algorithms of noise immunity channel coding in obstacle effect conditions is held in the article. The synthesis of the frequency-
J. Boiko, O. Eromenko
semanticscholar   +1 more source

The Rise of Refractory Transition‐Metal Nitride Films for Advanced Electronics and Plasmonics

open access: yesAdvanced Materials Interfaces, EarlyView.
Transition‐metal nitrides (TMNs) are exceptional materials with high stability, biocompatibility, and semiconductor integration, which have been extensively employed in various fields. However, the epitaxial growth of TMN films remains a challenge. The absence of high‐quality TMNs limits the understanding of their condensed matter physics and hinders ...
Jiachang Bi   +3 more
wiley   +1 more source

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