Results 61 to 70 of about 247,715 (341)

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

On demand shape memory polymer via light regulated topological defects in a dynamic covalent network

Nature Communications, 2020
The ability to undergo bond exchange in a dynamic covalent polymer network has brought many benefits not offered by classical thermoplastic and thermoset polymers.
Wusha Miao, Weike Zou, Binjie Jin, Chujun Ni, Ning Zheng, Qian Zhao, Tao Xie   +6 more
semanticscholar   +1 more source

Thermomechanical properties and shape-memory behavior of bisphenol a diacrylate-based shape-memory polymers [PDF]

, 2016
A series of acrylate-based shape-memory materials are synthesized from bisphenol A diacrylate monomers as crosslinking agents. Networks are synthesized by keeping constant the content of bisphenol A-based crosslinking agent and systematically varying the
Arrieta, Azra, Berg, Bongiovanni, Cha, Chen, Diani, Fan, Fan, Gall, Gugliuzza, Julich-Gruner, Lendlein, Lesser, Liu, Liu, Liu, Nazar, Ortega, Pandini, Park, Pascault, Puomi, Reeder, Safranski, Sangermano, Sangermano, Santiago, Smith, Smith, Sodhi, van Krevelen, Voit, Wu, Yakacki, Yakacki, Yang, Zhang   +37 more
core   +2 more sources

Hybrid Auxetic Architectures: Integrating Curvature‐Driven Design for Enhanced Mechanical Tunability and Structural Performance

Advanced Engineering Materials, EarlyView.
Curvature‐tuned auxetic lattices are designed, fabricated, and mechanically characterized to reveal how geometric curvature governs stretchability, stress redistribution, and Poisson's ratio evolution. Photoelastic experiments visualize stress pathways, while hyperelastic simulations quantify deformation mechanics.
Shuvodeep De, Giovanni Meli, Meysam Khalighian, Anahita Emami   +3 more
wiley   +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

Shape Memory Polymer Resonators as Highly Sensitive Uncooled Infrared Detectors

, 2019
Uncooled InfraRed (IR) detectors have enabled the rapid growth of thermal imaging applications. These detectors are predominantly bolometers, where the heating of pixel from incoming IR radiation is read out as a resistance change.
Adiyan, Ulas, Larsen, Tom, Shea, Herbert, Villanueva, Luis Guillermo, Zarate, Juan Jose   +4 more
core   +1 more source

Physical ageing of a PU based shape memory polymer: influence on their applicability to the development of medical devices. [PDF]

, 2009
The variation in the properties of polymeric materials through ageing has considerable implications, since it affects the performance of any associated devices.
Acosta, J., Diaz Lantada, Andres, Fonseca Valero, Carmen, Lafont Morgado, Pilar, Lorenzo Esteban, Vicente, Lorenzo Yustos, Héctor   +5 more
core   +2 more sources

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

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

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