Results 61 to 70 of about 4,110,050 (252)

Mechanically interlocked [c2]daisy chain backbone enabling advanced shape-memory polymeric materials

Nature Communications
The incorporation of mechanically interlocked structures into polymer backbones has been shown to confer remarkable functionalities to materials. In this work, a [c2]daisy chain unit based on dibenzo-24-crown-8 is covalently embedded into the backbone of
Shang-Wu Zhou, Danlei Zhou, Ruirui Gu, Chang-Shun Ma, Chengyuan Yu, Da-Hui Qu   +5 more
doaj   +1 more source

Investigation of interfacial shear stresses, shape fixity, and actuation strain in composites incorporating shape memory polymers and shape memory alloys

Frontiers in Materials, 2015
Shape memory composites (SMCs) based on shape memory alloys (SMAs) and shape memory polymers (SMPs) allow many design possibilities due to their controllable temperature-dependent mechanical properties.
Jungkyu ePark, Leon eHeadings, Marcelo J Dapino, Jeffery W Baur, Gyaneshwar P Tandon   +4 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Thermoelectric Responsive Shape Memory Graphene/Hydro-Epoxy Composites for Actuators

Micromachines, 2016
A series of thermoelectric responsive shape memory hydro-epoxy (H-EP) composites filled with different contents of graphene were developed and characterized.
Yongkun Wang, Wenchao Tian, Jianqiang Xie, Yan Liu   +3 more
doaj   +1 more source

Cell-Responsive Shape Memory Polymers

ACS Biomaterials Science & Engineering, 2022
Recent decades have seen substantial interest in the development and application of biocompatible shape memory polymers (SMPs), a class of "smart materials" that can respond to external stimuli. Although many studies have used SMP platforms triggered by thermal or photothermal events to study cell mechanobiology, SMPs triggered by cell activity have ...
Junjiang Chen, Lauren E. Hamilton, Patrick T. Mather, James H. Henderson   +3 more
openaire   +2 more sources

Shape Memory Actuator: thermomechanical training and surface optimization of shape memory wires embedded in a polymeric matrix [PDF]

, 2011
In the first part of my work I studied the mechanical and thermal behaviour of NiTi wires and strips in order to find the best training cycle to achieve a good compromise between transformation temperatures, recovery forces and phase reversibility ...
Scoponi, Martina
core  

Rotary 3D Printing With Integrated Electroplating

Advanced Engineering Materials, EarlyView.
A rotary material extrusion platform integrates localized copper electroplating with printing and encapsulation to fabricate cylindrical polymer–metal structures containing fully embedded, low‐resistance conductive pathways that enable internal Joule heating and thermally activated shape‐memory responses.
Antonio Zagaria, Nicola Larovere, Moslem Mohammadi, Gianluca Percoco, Ali Zolfagharian, Gianni Stano   +5 more
wiley   +1 more source

Multiple shape memory effects of polyimide nanocomposites based on octa(aminophenyl) silsequioxanes

eXPRESS Polymer Letters, 2021
This work reports the synthesis of a series of shape memory polyimides by polycondensation of 2,2′-bis[4-(3-aminophenoxy)phenyl]hexafluoropropane (m-6FBAPP), 4,4′-(hexafluoroisopropylidene) (6FDA) and PA-terminated OAPS.
J. Yao, S. Ma, J. Zhang, Y. Wang, C. Wang, H. Zhou, C. Chen, G. Liu   +7 more
doaj   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Shape-memory properties of magnetically active triple-shape nanocomposites based on a grafted polymer network with two crystallizable switching segments

eXPRESS Polymer Letters, 2012
Thermo-sensitive shape-memory polymers (SMP), which are capable of memorizing two or more different shapes, have generated significant research and technological interest. A triple-shape effect (TSE) of SMP can be activated e.g.
A. Lendlein, U. Narendra Kumar, K. Kratz, M. Behl   +3 more
doaj   +1 more source