Results 241 to 250 of about 503,610 (344)

Curved Bistable Origami‐Inspired Flexible Transcatheter Mitral Valve Clamping

open access: yesAdvanced Science, EarlyView.
A lightweight bistable curved origami dilator combines reversible deformation and high stability, offering a promising solution for minimally invasive mitral valve repair. Abstract Curved origami exhibits remarkable potential for minimally invasive medical applications owing to its unique geometric programmability and mechanical tunability. Building on
Siyu Gao   +4 more
wiley   +1 more source

DLP 4D Printing of Programmable Molecularly‐Engineered Liquid Crystal Elastomer Actuators

open access: yesAdvanced Science, EarlyView.
We introduce an original and versatile approach for printing liquid crystal elastomers that exhibit reversible shape morphing using digital light processing. 3D‐tructures are printed in a partially cured state, mechanically programmed, and then fully crosslinked to fix molecular alignment.
Rakine Mouhoubi   +2 more
wiley   +1 more source

Ultrafast Laser‐Induced Interatomic Forces in Magnetostrictive Metals

open access: yesAdvanced Science, EarlyView.
This study reports ultrafast changes in the interatomic forces generated by femtosecond laser excitation in magnetostrictive FeGa thin films. This ultrafast process manifests as an optical birefringence signal lasting ≈400 fs. Using a pump‐probe system, the femtosecond evolution of this nonequilibrium interatomic interaction is visualized, providing ...
Xiaoxue Zeng   +9 more
wiley   +1 more source

Tunneling‐Controlled Fusion of Short‐ and Long‐Term Memory in SiO2/HfO2‐Based Neuromorphic Device for Time‐Series Prediction

open access: yesAdvanced Science, EarlyView.
Based on trap‐assisted tunneling, the devices can fuse STM/LTM, where the low switching energy of 1 pJ and stable low‐power retention (0.2 % loss ratio and 3.05 × 10−11 W) is achieved. Training in a long short‐term memory network it allows to analysis time‐series data and then makes precise long‐term predictions with an error ratio of 4.465 ...
Chengdong Yang   +3 more
wiley   +1 more source

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