Results 61 to 70 of about 147,856 (286)

Multi‐Li+ Coordination for Superior Room‐Temperature Ionic Conductivity in PEO Solid Electrolytes

Advanced Materials, EarlyView.
A phosphonate‐functionalized polycarboxylate ether (P‐PCE) is introduced into PEO electrolytes to induce multi‐Li+ ions coordination, which effectively dissociates lithium salts, liberates Li+ from the strong chelation by PEO chains, and promotes fast Li+ hopping between adjacent coordination sites. Simultaneously, this design establishes dynamic, high‐
Hengming Yan, Bowen Zhang, Xuefan Liu, Lu Wang, Cunlong Hu, Anran Sheng, Congcong Zhang, Linglong Kong, Zhenzhen Wu, Yulin Zhong, Sheng Liu, Shanqing Zhang   +11 more
wiley   +1 more source

Torsional rigidity of steel square tubes with elastic anisotropy

Nihon Kikai Gakkai ronbunshu, 2016
Elastic moduli of metal sheets have planar anisotropy determined by crystalline texture. Texture control is effective in raising Young's modulus of steel sheets in some directions on the plane.
Shigeru YONEMURA, Takeshi KAWACHI, Natsuko SUGIURA, Shunji HIWATASHI, Toshiyuki NIWA, Tohru YOSHIDA   +5 more
doaj   +1 more source

High‐Mobility Chalcogenophene‐Engineered Diketopyrrolopyrrole Mixed Ionic‐Electronic Conductors With Doping Tolerance for Low‐Power Organic Electrochemical Transistors

Advanced Materials, EarlyView.
Chalcogen substitution emerges as a powerful strategy for designing high‐performance OMIECs. In aliphatic–glycol side chain diketopyrrolopyrrole polymers, biselenophene incorporation promotes a planar, polarizable, and doping‐tolerant quinoidal framework, enabling PDPP‐4EG‐Se2 to combine high hole mobility, large µC*, enhanced operational stability ...
Shinbee Oh, Tae Hoon Kim, Dahyun Jeong, Ji Hwan Kim, Seungjin Lee, Tan Ngoc‐Lan Phan, Alexander Tipan‐Quishpe, Myung‐Han Yoon, Keehoon Kang, Bumjoon J. Kim   +9 more
wiley   +1 more source

Topping-off surgery vs posterior lumbar interbody fusion for degenerative lumbar disease: a finite element analysis

Journal of Orthopaedic Surgery and Research, 2019
Background Adjacent segment disease (ASD) is a common complication after posterior lumbar interbody fusion (PLIF). Recently, a topping-off surgery (non-fusion with Coflex) has been developed to reduce the risk of ASD, yet whether and how the topping-off ...
Yunpeng Fan, Shaobo Zhou, Tao Xie, Zefeng Yu, Xiao Han, Liulong Zhu   +5 more
doaj   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Influence of structural reinforcements on the twist-to-bend ratio of plant axes: a case study on Carex pendula

Scientific Reports, 2021
During biological evolution, plants have developed a wide variety of body plans and concepts that enable them to adapt to changing environmental conditions.
Steve Wolff-Vorbeck, Olga Speck, Thomas Speck, Patrick W. Dondl   +3 more
doaj   +1 more source

Why Are Bone Torsional Rigidity and Stiffness Measurements Often Inaccurate?

This study aims to raise awareness about the widespread use of flawed torsion test setups for measuring the stiffness-related torsional mechanical properties of bone, both in previous studies and in current practice.
Shaikh, Mustafiz, Zhang, Hexin, Wong, Simon H. F., Soon, Chin Fhong, Sukontasukkul, Piti, Deng, Yu, Yuen, Terry Y.P., Dong, Qian, Andras, Peter, Pei, Yanghao, Zhen, Guo, Wang, Mei, Zhang, Haiying, Hansapinyo, Chayanon   +13 more
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Liquid Crystalline Elastomers in Soft Robotics: Assessing Promise and Limitations

Advanced Robotics Research, EarlyView.
Liquid crystalline elastomers (LCEs) are programmable soft materials that undergo large, anisotropic deformation in response to external stimuli. Their molecular alignment encodes directional actuation in a monolithic structure, making them long‐standing candidates for soft robotic systems.
Justin M. Speregen, Timothy J. White
wiley   +1 more source

TORSIONAL RIGIDITY AND INFINITE SUMS

, 2020
The torsional rigidity of a piecewise smoothly bounded domain Ω ⊂R3 is a geometric invariant first studied in the context of elastic bodies. Torsional rigidity is well studied for many geometric bodies and plays an important role in analysis. We establish
Cole, Zachary
core