Results 41 to 50 of about 63,375 (259)

Research Progress in Carbon Nanotube-Based Cold Cathode Electron Guns

Nanomaterials
Field emission (FE) cold-cathodes have some important characteristics, including instant turn-on, room temperature operation, miniaturization, low power consumption, and nonlinearity.
Jiupeng Li, Yu Tu, Dewei Ma, Yun Yang
doaj   +1 more source

Cell-type continuous electromagnetic radiation system generating millimeter waves for active denial system applications

Defence Technology, 2022
The cell-type continuous electromagnetic radiation system is a demonstration device capable of generating high-power millimeter electromagnetic waves of a specific wavelength and observing their effects on living organisms.
Sun-Hong Min, Ohjoon Kwon, Matlabjon Sattorov, Seontae Kim, In-Keun Baek, Seunghyuk Park, Ranjan Kumar Barik, Anirban Bera, Dongpyo Hong, Seonmyeong Kim, Bong Hwan Hong, Chawon Park, Sukhwal Ma, Minho Kim, Kyo Chul Lee, Yong Jin Lee, Han Byul Kwon, Young Joon Yoo, Sang Yoon Park, Gun-Sik Park   +19 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

OPTIMIZING THE E-BEAM PROFILE OF A SINGLE CARBON NANOTUBE FIELD EMISSION DEVICE FOR ELECTRIC PROPULSION SYSTEMS. doi: 10.5028/jatm.2010.02010915

Journal of Aerospace Technology and Management, 2011
Preliminary studies on field emission (FE) arrays comprised of carbon nanotubes (CNT) as an electron source for electric propulsion system show remarkably promising results. Design parameters for a carbon nanotube (CNT) field-emission device operating
Juliano Fujioka Mologni, Marco Antonio Robert Alves, Filipe Braumgratz, Edson Fonseca, Cesareo L. R. Siqueira, Edmundo Silva Braga   +5 more
doaj  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Development of the Langmuir probe diagnostic system on the Helimak device at Shenzhen University [PDF]

AIP Advances
This paper systematically presents the recent development of the Langmuir probe diagnostic system on the Shenzhen University Helimak device. By employing this probe array, high spatiotemporal resolution measurements of radial plasma parameters in the ...
Jiachong Chen, Muquan Wu, Zhihui Huang, Hongxin He, Yaqi Liu, Hang Li, Xiang Zhu, Xiaodong Lin, Fei Wen, Xiang Gao   +9 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Pulse voltage induced phase change characteristics of the ZnxSbyTez phase-change prototype device

AIP Advances, 2016
ZnxSbyTez thin films are deposited on quartz or glass substrates by the electron beam evaporation technique in an ultra-high vacuum. A prototype phase change memory device using the ZST (ZnxSbyTez) thin film is fabricated.
Rui Li, Ling Xu, Henan Fang, Ronghua Lu, Tao Wu, Fei Yang, Zhongyuan Ma, Jun Xu   +7 more
doaj   +1 more source