Results 71 to 80 of about 38,612 (274)

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

Shape morphing of complex geometries using partial differential equations. [PDF]

, 2007
An alternative technique for shape morphing using a surface generating method using partial differential equations is outlined throughout this work.
Gonzalez Castro, Gabriela, Ugail, Hassan
core   +1 more source

Geometry and Mechanics of Thin Growing Bilayers

, 2015
We investigate how thin sheets of arbitrary shapes morph under the isotropic in-plane expansion of their top surface, which may represent several stimuli such as nonuniform heating, local swelling and differential growth.
Holmes, Douglas P., Nardinocchi, Paola, Pezzulla, Matteo, Smith, Gabriel P.   +3 more
core   +1 more source

Agile reversible shape-morphing of particle rafts

Soft Matter, 2021
The highly morphable particle raft changes its topography under an electric field without any prescribed patterns. The interface is stably driven to upheave and move by metallic electrodes, paper, and even human fingers.
Kyungmin Son, Jeong-Yun Sun, Ho-Young Kim   +2 more
openaire   +3 more sources

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Mechanochemically assisted morphing of shape shifting polymers

Chemical Science, 2023
A 2,2′-bis(2-phenylindan-1,3-dione) (BPID) mechanophore is applied as a switching unit for mechanochemical morphing of polymers. Mechancial force activates the BPID into stable PID radicals, whose subsequent dimerization fixes the temporary shapes.
Rui Tang, Wenli Gao, Yulin Jia, Kai Wang, Barun Kumar Datta, Wei Zheng, Huan Zhang, Yuanze Xu, Yangju Lin, Wengui Weng   +9 more
openaire   +2 more sources

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Autonomous inverse encoding guides 4D nanoprinting for highly programmable shape morphing

International Journal of Extreme Manufacturing
Highly programmable shape morphing of 4D-printed micro/nanostructures is urgently desired for applications in robotics and intelligent systems. However, due to the lack of autonomous holistic strategies throughout the target shape input, optimal material
Shuaiqi Ren, Zhiang Zhang, Ruokun He, Jiahao Fan, Guangming Wang, Hesheng Wang, Bing Han, Yong-Lai Zhang, Zhuo-Chen Ma   +8 more
doaj   +1 more source

Type Synthesis and Kinematic Analysis of a 2-DOF Shape-Morphing Wheel Mechanism for Step-Overcoming

IEEE Access, 2021
This study presents a novel shape-morphing wheel that enables to not only traverse flat ground quickly in a circular configuration but also overcome obstacles like steps effectively in a transformed configuration.
Youngsoo Kim, Hwa Soo Kim, TaeWon Seo
doaj   +1 more source

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

Advanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source