Results 81 to 90 of about 2,655,722 (289)

Design and Analysis of Novel Actuation Mechanism with Controllable Stiffness

Actuators, 2019
Actuators intended for human⁻machine interaction systems are usually designed to be mechanically compliant. Conventional actuators are not suitable for this purpose due to typically high stiffness.
Erivelton Gualter dos Santos, Hanz Richter   +1 more
doaj   +1 more source

Remote Activation of Wnt Signaling and Cell Proliferation by E‐Cadherin Magnetomechanical Stimulation

Advanced Functional Materials, EarlyView.
A pioneering magnetogenetic toolkit enables non‐invasive, precise spatiotemporal modulation of intracellular Wnt/β‐catenin signaling. Functionalized magnetic nanoparticles (MNPs@E/EC15) target cellular E‐cadherins to generate localized magnetomechanical forces under low‐intensity magnetic fields.
Christian Castro‐Hinojosa, Pablo Martínez‐Vicente, Lucía G. Recaredo, Susel Del Sol‐Fernández, Pilar Gomollón‐Zueco, Yilian Fernández‐Afonso, Raluca M. Fratila, María Moros   +7 more
wiley   +1 more source

A Miniaturized Autonomous Thermomagnetic Generator

Advanced Functional Materials, EarlyView.
Micro, autonomous and high power thermomagnetic generator operating between a heat dissipator and a processor. ABSTRACT Thermomagnetic generators (TMG) are promising devices for converting low‐grade waste heat into electricity. Self‐actuation using permanent magnets is the key to autonomy.
Morgan Almanza, Doan Nguyen Ba, Nesrine Belkadi, Erika Fontana, Jean‐Eudes Duvauchelle, Sukhendu Sadhukhan, Loïc Becerra, Thibaut Devillers, Massimiliano Marangolo, Fabien Parrain, Nora M. Dempsey, Martino LoBue   +11 more
wiley   +1 more source

Variable Stiffness Actuators: Review on Design and Components

IEEE/ASME Transactions on Mechatronics, 2016
Variable stiffness actuators (VSAs) are complex mechatronic devices that are developed to build pas- sively compliant, robust, and dexterous robots. Numerous different hardware designs have been developed in the past two decades to address various demands on their functionality. This review paper gives a guide to the design process from the analysis of
Wolf, Sebastian, Grioli, G., Eiberger, Oliver, Friedl, Werner, Grebenstein, Markus, Höppner, Hannes, Burdet, Etienne, Caldwell, D., Carloni, R., Catalano, M., Lefeber, D., Stramigioli, S., Tsagarakis, N., Van Damme, M., Van Ham, R., Vanderborght, B., Visser, L.C., Bicchi, Antonio, Albu-Schäffer, Alin Olimpiu   +18 more
openaire   +3 more sources

Design of an Auto-Tuning Feedback Controller Based on the Stiffness of Nonlinear Stiffness Actuators

, 2018
Variable stiffness actuators (VSAs) realize a compromise between bandwidth and safety through stiffness tuning. Many VSAs often apply classical PD controller to realize a fast and accurate output response in human robotic interaction(HRI).
Yaru Zhao, Zhibin Song, Tianyu Ma, Song, Zhibin, Dai, J. S., Ma, Tianyu, J. S. Dai, Zhao, Yaru   +7 more
core   +1 more source

Bistable Isochoric Chiral Metamaterials with Reprogrammable Multiaxial Responses

Advanced Functional Materials, EarlyView.
An isochoric bistable rotational unit cell enables in situ modification of internal contact conditions post‐fabrication, without altering the global envelope dimensions of the surrounding architecture. By selectively switching between open and closed states, the tessellated chiral metamaterial can reprogram its volumetric response, including bulk ...
Shujia Chen, Lei Wu, Jingran Liu, Damiano Pasini   +3 more
wiley   +1 more source

Architectural Tuning of Bouligand Electrospun Laminates Enables Coupled Mechanical Robustness and Electromechanical Sensing

Advanced Functional Materials, EarlyView.
Bioinspired Bouligand architectures are translated into biodegradable polymer laminates with integrated sensing, revealing how structural design governs multifunctional performance. A 20° interlayer rotation optimizes strength, flexibility, and electromechanical response, while embedded nanotube networks enable real‐time damage detection and wearable ...
Piotr K. Szewczyk, Daniel P. Ura, Michał Kopacz, Katarzyna Marszalik, Urszula Stachewicz   +4 more
wiley   +1 more source

Improving the stiffness of mechanical layer jamming cable-driven soft actuators through design optimization and frame reinforcement

Mechanical Engineering Journal
Soft cable-driven actuators offer flexibility and adaptability but often lack stiffness, limiting their application in tasks requiring high load capacity. A variable stiffness mechanism has been developed to change the stiffness as needed to increase the
Chinvudh UAHCHINKUL, Satoshi MURAMATSU, Katsuhiko INAGAKI   +2 more
doaj   +1 more source

Recyclable Lignin‐Based Thermadapt Shape Memory Polymers With Near‐Infrared Light Response

Advanced Functional Materials, EarlyView.
ABSTRACT Covalent adaptable networks (CANs) have been designed to address the recycling challenges associated with thermosets, while preserving their mechanical properties. However, producing biobased CANs with intelligent response capabilities remains challenging.
Jian Liu, Yanfan Yang, Görkem Eylül Kaya, Huixing Cao, Joost Brancart, Niko Van den Brande, Lin Dai, Chuanling Si, Katrien V. Bernaerts   +8 more
wiley   +1 more source

Hydrogel‐Based Method for High‐Resolution Measurements of Contact Mechanics in Rapid Biological Adhesives: A Case Study in Cuttlefish Tentacle Strikes

Advanced Functional Materials, EarlyView.
Cuttlefish and squid can catch their prey within milliseconds using specialized tentacles and suckers. The physics of how the suckers can attach so quickly has remained a mystery given the technical challenges of studying them in vivo. In this publication, we develop a hydrogel that retains imprints of the suckers in order to estimate the forces they ...
Alexander Koehnsen, Mila F Krikke, Thomas E Kodger, Florian T Muijres, Guillermo J Amador   +4 more
wiley   +1 more source