Results 91 to 100 of about 9,225 (292)

Conductive Hydrogels for Exogenous Sensing and Cell Fate Control

Advanced Materials, EarlyView.
We engineer electrically conductive hydrogels by combining sulfated glycosaminoglycans with semiconducting polymers. These hydrogels bind bioactive proteins, including growth factors, whose release or retention can be modulated by low‐voltage stimulation. The hydrogels are also integrated as 3D channels in organic electrochemical transistors as part of
Teuku Fawzul Akbar, Carlos Alejandro Jimenez‐Rodriguez, Railia Biktimirova, Ilka Hermes, Thomas Kurth, My Duyen Pham, Mikhail Tsurkan, Jens Friedrichs, Francis L. C. Morgan, Hans Kleemann, Olga Guskova, Uwe Freudenberg, Peter Fratzl, Carsten Werner, Christoph Tondera, Ivan R. Minev   +15 more
wiley   +1 more source

Finger Prosthesis Driven by DEA Pairs as Agonist–Antagonist Artificial Muscles

Biomimetics
Loss of an upper limb exerts a negative influence on an individual’s ability to perform their activities of daily living (ADLs), reducing quality of life and self-esteem.
Alexandre B. S. da Silva, Gabriel E. P. Mendes, Eduardo S. Bragato, Guilherme L. Novelli, Marina Monjardim, Rafhael M. Andrade   +5 more
doaj   +1 more source

Elastomeric actuator devices for magnetic resonance imaging [PDF]

, 2008
The present invention is directed to devices and systems used in magnetic imaging environments that include an actuator device having an elastomeric dielectric film with at least two electrodes, and a frame attached to the actuator device.
Dubowsky, Steven, Hafez, Moustapha, Jolesz, Ferenc A., Kacher, Daniel F., Lichter, Matthew, Weiss, Peter, Wingert, Andreas   +6 more
core   +1 more source

Bonding of Acrylic Pressure‐Sensitive Adhesives and Silicone Elastomers via Surfactant‐Assisted Plasma Activation for Soft Robotics

Advanced Materials Interfaces, EarlyView.
A simple strategy is presented for bonding acrylic PSAs and silicone elastomers by curing surfactant‐doped Ecoflex on oxygen‐plasma‐treated VHB. The interface reaches a maximum strength of 1.6 N/mm (over 20 times that of the control) while retaining material compliance.
Kengo Kusama, Tadatoshi Kurogi, Kohei Takada, Mai Sasaoka, Yui Kumon, Masaru Misumi, Kanako Funami, Jun Shintake   +7 more
wiley   +1 more source

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source

Healable Dielectric Elastomer Actuator With Premature Breakdown Warning Function for Information Transmission Encryption and Human‐Machine Interaction

Advanced Science
Dielectric elastomer actuators (DEAs), regarded as artificial muscles, are used as actuators or sensors in artificial visual systems, haptic equipment, and human‐robot interaction.
Yanze Liu, Shilin Luo, Jiawei Zhao, Lei Xu, Zhong‐Zhen Yu, Dan Yang   +5 more
doaj   +1 more source

Wearable wireless tactile display for virtual interactions with soft bodies. [PDF]

, 2014
We describe here a wearable, wireless, compact, and lightweight tactile display, able to mechanically stimulate the fingertip of users, so as to simulate contact with soft bodies in virtual environments.
Carpi, F, De Rossi, DE, Frediani, G, Mazzei, D   +3 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Advancing soft robotics: recent progress in dielectric elastomer and fluid actuators

npj Robotics
Soft robots offer an alternative to traditional rigid-bodied counterparts due to their mechanical compliance, adaptability, and enhanced safety. Particularly, soft dielectric-based actuators (i.e., dielectric elastomer and fluid actuators) enable ...
Md Harun Or Rashid Molla, Jinxin Chen, Chengyi Xu   +2 more
doaj   +1 more source

Dielectric Elastomer Actuated Systems and Methods [PDF]

, 2008
The system of the present invention includes an actuator having at least two electrodes, an elastomeric dielectric film disposed between the two electrodes, and a frame attached to the elastomeric dielectric film.
Dubowsky, Steven, Hafez, Moustapha, Lichter, Matthew, Weiss, Peter, Wingert, Andreas   +4 more
core   +1 more source