Results 61 to 70 of about 10,283 (224)

In Situ Characterisation of Hydrogels via Dynamic Interface Printing

Advanced Science, EarlyView.
ABSTRACT Hydrogels have become pivotal materials for tissue engineering, robotics, biomedical devices, and sensing applications due to their diverse material compositions and tunable mechanical properties. While significant effort has focused on developing novel manufacturing approaches such as extrusion bioprinting and light‐based fabrication methods,
Callum Vidler, Michael Halwes, David J. Collins   +2 more
wiley   +1 more source

Hierarchical Artificial Muscle with Nonlinear Elasticity for Antagonistic and Cyclic Robotics

Advanced Science, EarlyView.
We construct hierarchical muscles by plying nylon fibers around a heating wire. The hierarchical muscle shows a J‐shaped passive curve, which shows benefit in antagonistic muscle pair and work accumulation mechanism. We also develop a computational, first‐principle model to understand the physics of both active actuation stroke and passive J‐curve ...
Samuel Tsai, Liuyang Cheng, Ali Albazroun, Qiong Wang, Jeongmin Kim, Arman Tekinalp, Soonwook Kim, Charlie Simcox, Ryne Downing, Vagish Sivaramakrishnan, Grace Carsello, Miles Bimrose, Wonsik Eom, William P. King, Mattia Gazzola, Sameh Tawfick   +15 more
wiley   +1 more source

Transport of free surface liquid films and drops by external ratchets and self-ratcheting mechanisms

, 2010
We discuss the usage of ratchet mechanisms to transport a continuous phase in several micro-fluidic settings. In particular, we study the transport of a dielectric liquid in a heterogeneous ratchet capacitor that is periodically switched on and off.
Ajdari, Bonn, Brunet, Brunet, Buguin, Cole, Curie, de Gennes, Doedel, Doedel, Engel, Hänggi, Israelachvili, John, John, John, Kargupta, Karin John, Lin, Linke, Matthias, Merkt, Noblin, Oron, Pismen, Podgorski, Quéré, Ramos, Rousselet, Savel’ev, Savel’ev, Savel’ev, Savel’ev, Savel’ev, Savel’ev, Snoeijer, Stroock, Thiele, Thiele, Thiele, Uwe Thiele   +40 more
core   +3 more sources

Influence of stress state and strain path on deformation induced martensitic transformations [PDF]

, 2008
The mechanically induced transformation behavior of 12Crsingle bond9Nisingle bond 4Mo (ASTM A 564) austenitic stainless steel is investigated in different stress states.
Geijselaers, H.J.M., Huetink, J., Perdahcıoğlu, E.S.   +2 more
core   +2 more sources

All‐in‐One Underwater Quality Evaluation Metamaterial With Mechanical Robustness, Sound Attenuation, and Diffuse Reflection

Advanced Science, EarlyView.
In this work, a bioinspired all‐in‐one underwater quality evaluation metamaterial, combining sound attenuation, diffuse reflection, and mechanical robustness, is proposed based on jumping spider locomotion and human skeletal biomechanics. Meanwhile, a CNN‑driven quality evaluation framework is established for theoretically dimension‐reduced ...
Hongze Li, Zhenyu Li, Jinshui Yang, Jianhao Wu, Yidan Chen, Linzhi Wu, Hong Hu, Penglin Gao, Yegao Qu   +8 more
wiley   +1 more source

Performance Analysis of an Electro-Hydrostatic Actuator

Journal of the Korean Society for Aeronautical & Space Sciences, 2007
The EHA(Electro-hydrostatic Actuator) reveals completely different characteristics from the conventional valve-controlled Electro-hydraulic actuators. In this paper, its mathematical model including nonlinear elements was derived to be verified by experiments.
openaire   +2 more sources

Multiscale Architecture and Mechanics of the Cell Nucleus: Implications for Disease, Bioengineering and Nanomedicine

Advanced Science, EarlyView.
Nuclear mechanical properties are inherently scale‐dependent, arising from a hierarchical architecture that spans DNA, chromatin, the nuclear envelope, and condensates. Experimental techniques and theoretical models are integrated into a cohesive multiscale framework linking nanoscale structural features to organelle‐level mechanical behavior.
Xinran Liu, Xin Chen, Qingyang Zhao, Weikang Tan, Lingrui Zhu, Kin Liao, Vincent Chan, Nicolae Goga, Winfred O. Larkotey, Yang Li, Yinghui Shi, Wenya Shu, Lin Wang, Weiqing Wang, Tian Jian Lu, Yulong Han   +15 more
wiley   +1 more source

Quantitative Comparative Study on the Performance of a Valve-Controlled Actuator and Electro-Hydrostatic Actuator

Actuators
The development of the electrification of aircraft has prompted aviation hydraulic systems to shift from traditional centralized valve actuators (CVAs) to electro-hydrostatic actuators (EHAs).
Bo Yang, Yijie Lu, Haoyi Jiang, Zhenfei Ling, Tong Li, Hao Liu, Xiaoping Ouyang   +6 more
doaj   +1 more source

On Adaptive Electro Hydrostatic Actuators

, 2018
Published by [Mainz ...
openaire   +2 more sources

Mechanical Metamaterials with Negative Compressibility Transitions

, 2012
When tensioned, ordinary materials expand along the direction of the applied force. Here, we explore network concepts to design metamaterials exhibiting negative compressibility transitions, during which a material undergoes contraction when tensioned ...
AC Pigou, Adilson E. Motter, AL Goodwin, B Moore, D Braess, D Schurig, DA Fortes, DR Smith, EV Vakarin, G Puglisi, GJ Martyna, HC Andersen, HMYC Mallikarachchi, JB Pendry, JE Cohen, JN Grima, K Otsuka, LE Reichl, MJ Beckmann, N Fang, O Mishima, PA Janmey, R Abeyaratne, R Gatt, RA Shelby, RH Baughman, RH Baughman, RS Lakes, RS Lakes, S Zhang, T Jaglinski, T Roughgarden, VG Veselago, Y Lee, Z Liu, Zachary G. Nicolaou   +35 more
core   +1 more source