Results 51 to 60 of about 1,834,169 (290)

Selective Polarity Control of Metal Oxide Semiconductors for Complementary Logic Gates

Advanced Science, EarlyView.
A scalable electrochemical doping strategy enables in situ p‐to‐n polarity conversion in tin oxide (SnO) thin films using electrolyte gating. Both the pristine p‐type SnO transistor and the electrochemically converted n‐type SnO2 transistor exhibited noticeable and stable electrical performance.
Dong Hyun Park, Seung Ho Ryu, Min Su Kim, Taek‐Mo Chung, Seong Keun Kim, In‐Hwan Baek, Keun Hyung Lee   +6 more
wiley   +1 more source

Reducing the Diameter of Freight Vehicle Wheels – The Suitability of Q/D as a Control for Wheel-Rail Contact Stress [PDF]

, 2013
High wheel-rail contact stress is related to rail damage mechanisms such as gross plastic flow. Such high contact stresses are often generated by freight vehicles which have comparatively high axleloads.
Osman, Martin, Shackleton, Philip, Stow, Julian, Eickhoff, Bridget   +3 more
core   +3 more sources

RESEARCH ON OPTIMIZATION OF HEAVY LOAD RAILWAY RAIL GRINDING PROFILE BASED ON ABRASION CONTROL

Jixie qiangdu, 2020
Wa-ri heavy load railway is taken as the research object in the paper,the rail profiles are observed before and after grinding. Based on the wheel/rail contact wear theory and the finite element model of high-speed wheel/rail steady rolling contact ...
YANG YiHang, LIU XueShen, LIU JiHua
doaj  

Parameter influence analysis and optimization of wheel–rail creepage characteristics in high-speed railway curves [PDF]

Railway Sciences
Purpose – To investigate the influence of vehicle operation speed, curve geometry parameters and rail profile parameters on wheel–rail creepage in high-speed railway curves and propose a multi-parameter coordinated optimization strategy to reduce wheel ...
Bolun An, Jiapeng Liu, Guang Yang, Feng shou Liu, Tong Shi, Ming Zhai   +5 more
doaj   +1 more source

Modelling and simulation of dynamic wheel-rail interaction using a roller rig [PDF]

, 2012
The interaction between the wheel and rail greatly influences the dynamic response of railway vehicles on the track. A roller rig facility can be used to study and monitor real time parameters that influence wheel-rail interaction such as wear, adhesion,
Gu, Fengshou, Pislaru, Crinela, Ball, Andrew, Gu, F., Anyakwo, A., Ball, A., Anyakwo, Arthur, Pislaru, C.   +7 more
core   +1 more source

Nanoparticle‐Mediated Bubble Suppression During Droplet Solidification for Mechanical Reinforcement

Advanced Science, EarlyView.
Nanoparticles mediate droplet solidification by raising nucleation temperature, refining dendrites, and slowing freezing‐front advance, thereby suppressing trapped air bubbles in droplet‐based 3D printing. This strategy reduces bubble volume fraction by ∼35% and increases compressive strength by up to 39%, offering a low‐cost route to stronger printed ...
Runmiao Gao, Xuan Zhang, Mengjie Song, Ronggui Yang, Keke Shao, Jun Shen, Long Zhang, Shuhuai Yao, Yubing Guo, Ruzhu Wang, Christopher Yu Hang Chao   +10 more
wiley   +1 more source

An Accurate and Fast Method to Inspect Rail Wear Based on Revised Global Registration

IEEE Access, 2018
Rail wear inspection is vitally important in the railway industry. Conventional methods mainly use manual or static measurements to detect rail wear, which are inefficient, imprecise, and unreliable.
Yue Yang, Long Liu, Bing Yi, Feng Chen
doaj   +1 more source

Holographic Mapping of Orbital Angular Momentum using a Terahertz Diffractive Optical Neural Network

Advanced Intelligent Discovery, EarlyView.
A compact six‐layer diffractive optical neural network enables direct recognition and spatial mapping of terahertz (THz) orbital angular momentum (OAM) beams. Fabricated by 3D printing, the system distinguishes nine OAM modes and their superpositions with high fidelity, good efficiency, and low crosstalk, offering a scalable solution for THz ...
Wei Jia, Miguel Gomez, Steve Blair, Berardi Sensale‐Rodriguez   +3 more
wiley   +1 more source

Prediction‐Guided Two‐Step Solid‐State Exploration of Unknown Pseudo‐Ternary Oxides

Advanced Intelligent Discovery, EarlyView.
Prediction‐guided selection combined with two‐step solid‐state exploration enables efficient search of unknown pseudo‐ternary oxides. Broad robotic slurry screening followed by manual single‐phase isolation leads to the discovery of a new oxide, Ba5SnV6O22, showing how data‐guided experiments connect unexplored composition regions to new materials ...
Hiroyuki Hayashi
wiley   +1 more source

Discussion on Rail Grinding Technology Development Situation and Grind Strategies

机车电传动, 2020
The origin and development status of rail grinding technology at home and abroad was summarized, and the classification of rail grinding technology at current stage was introduced, focusing on the principles of making grinding strategy for curve and ...
Jijun GONG, Menggang GUO, Bo HOU, Junping WANG, Jun JIANG   +4 more
doaj