Results 41 to 50 of about 40,447 (267)
Advanced Science, EarlyView.A fully soft, self‐reconfigurable gripper inspired by rapeseed flowers is monolithically 3D‐printed and electronics‐free, switching between diagonal and parallel finger arrangements. Establishing a self‐reconfigurable grasping paradigm, the gripper enables diverse manipulation tasks, including rotating bulbs, picking fruits, grasping cross‐scale ...
Qiping Xu +8 more
wiley +1 more source
Research on the Wheel-rail Matching in High-speed Railway under Different Traction Conditions
机车电传动, 2018 In order to study the contact characteristics of the new rail profile and the high-speed EMUs wheel profiles, the profiles matching between LMA, S1002CN, XP55 wheel and 60D, 60N rail in the middle position had been proceeded.
WANG Xueping, ZHANG Jun, MA He
doaj
Advanced Science, EarlyView.A bio‐inspired bidirectional‐winding origami platform enables scalable and programmable deployable structures. Double axial folding inspired by earwig hindwings and Flasher‐based hybridization create modular multilayer architectures with diverse attainable winding angles under fixed boundary conditions.
Wenyao Zhang +5 more
wiley +1 more source
Chengshi guidao jiaotong yanjiuObjective Wheel-rail force plays an important role in the study of train running state, wheel off roundness and rail corrugation in rail transit. Current wheel-rail force identification methods have some problems, such as difficulty in data collection ...
ZHANG Zeteng +3 more
doaj +1 more source
Study on a Heuristic Wheelset Structure without Rail Corrugation on Sharply Curved Tracks
Shock and Vibration, 2021 Rail corrugation on low rails of sharp railway curves is still a difficult problem to solve worldwide. Nearly all low rails of the sharp railway curves incur rail corrugation. In the present study, an active method to remedy rail corrugation was studied.
G. M. Mei +3 more
doaj +1 more source
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 +6 more
wiley +1 more source
A Design Method for Rail Profiles in Switch Panel of Turnout Based on the Contact Stress Analysis
Shock and Vibration, 2020 Contact stress between wheel and rail is believed to cause damage to the rail. The relationship between the contact stress and the radius of the rail is initially based on the Hertz contact theory.
Dilai Chen +3 more
doaj +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 +10 more
wiley +1 more source
Advanced Energy Materials, EarlyView.A catalyst‐free solid‐state Li‐O2 battery achieves current‐driven four‐electron Li2O formation, delivering simultaneous high‐energy and high‐power operation with 1032 Wh·kg−1 and 374 W·kg−1 in a single cell. ABSTRACT Li‐O2 batteries offer a compelling pathway toward next‐generation energy storage owing to their ultrahigh theoretical energy density ...
Shu‐Ting Ko +9 more
wiley +1 more source
Design and Research of Dynamic Detection System for Medium-Low Speed Maglev Contact Rail
Chengshi guidao jiaotong yanjiu［Objective］ Contact rail is an important component in maglev rail transit system engineering, providing safe and reliable electrical energy for medium-low speed maglev trains.
TU Jun, ZHOU Wenwu, SU Kuan, YUAN Wei
doaj +1 more source