Results 91 to 100 of about 252,539 (320)

New High-Efficiency Resonant O-Type Devices as the Promising Sources of Microwave Power

Energies, 2020
New O-type high-power vacuum resonant microwave devices are considered in this study: COM klystrons, CSM klystrons and resotrodes. All these devices can output a large amount of power (up to units of MW and higher) with an efficiency of up to 90%.
Andrei Baikov, Olga Baikova
doaj   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Broad-Band Multiple OAMs’ Generation With Eight-Arm Archimedean Spiral Antenna (ASA)

IEEE Access, 2020
In this paper, an eight-arm Archimedean spiral antenna (ASA) is proposed to generate multiple orbital angular momentum (OAM) modes over a respectable frequency band (1.9-3GHz).
Yang Yang, Yubin Gong, Kai Guo, Fei Shen, Jinghua Sun, Zhongyi Guo   +5 more
doaj   +1 more source

Call for papers - From Mega to nano: Beyond one Century of Vacuum Electronics [PDF]

, 2022

openalex   +1 more source

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

Acoustic and optical plasmons excitation in double-channel AlGaN/GaN HEMT under asymmetric boundaries

AIP Advances
We have simulatively studied the electrical excitation of acoustic and optical plasmons in double-channel AlGaN/GaN high electron mobility transistors (HEMT) under asymmetric boundaries.
Hongyang Guo, Shengpeng Yang, Ping Zhang, Runxian Xing, Guohao Yu, Shaomeng Wang, Yubin Gong   +6 more
doaj   +1 more source

Field Emission from Carbon Nanostructures

Applied Sciences, 2018
Field emission electron sources in vacuum electronics are largely considered to achieve faster response, higher efficiency and lower energy consumption in comparison with conventional thermionic emitters.
Filippo Giubileo, Antonio Di Bartolomeo, Laura Iemmo, Giuseppe Luongo, Francesca Urban   +4 more
doaj   +1 more source

Frontiers in the Application of RF Vacuum Electronics. [PDF]

IEEE Trans Electron Devices, 2023
Armstrong CM, Snively EC, Shumail M, Nantista C, Li Z, Tantawi S, Loo BW, Temkin RJ, Griffin RG, Feng J, Dionisio R, Mentgen F, Ayllon N, Henderson MA, Goodman TP.   +14 more
europepmc   +1 more source

A NASA First in Nano-Technology: Nanoscale Vacuum Tube for Radiation Immune Electronics [PDF]

Vacuum provides the fastest electron speed, better than any semiconductor. Nevertheless vacuum tubes were bulky, fragile and consumed much power. Now nanotechnology has enabled fabrication of vacuum tubes at nanoscale in silicon chips.
Desilestre, Ingrid E., Meyyappan, Meyya
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source