The researchers provide an overview in their paper of how some of the latest stimuli-responsive biomaterials (SRBs), which include the shape memory polymer, are used to mimic the dynamic microenvironment during heart development and disease progression.
Multi-stimuli responsive shape memory polymers synthesized by using reaction-induced phase separation 1 1 1 1,2 Yufen Zhang, Xue Jiang, Ronglan Wu, Wei Wang Key Laboratory of Oil and Gas Fine Chemicals, Department of Chemistry, Xinjiang University, Urumqi 830046, China Department of Chemistry and Centre for Pharmacy, University of Bergen, Bergen N-5007, Norway Correspondence to: W. Wang …
Shape memory polymers (SMPs) are a category of smart materials5,6that have the capability to recover their permanent shapes from one or multiple temporarily deformed states when exposed to an external stimulus7, such as temperature8, moisture9, light10, electromagnetic field11, or ∆pH12. Here, a new strategy is developed to achieve dual-stimuli-responsive triple-shape memory with non-overlapping effect in one programming cycle. Here, a series of poly(l-lactide)-poly(tetramethylene oxide) glycol copolymers (PLA-PTMEG-A) is prepared by selected dangling photoresponsive anthracene moieties on the crystalline PTMEG backbone. Different multifunctional shape memory nanocomposites responsive to different kinds of stimulation methods, including thermal responsive, electro-activated, alternating magnetic field responsive, Request PDF | STIMULI-RESPONSIVE POLYMERIC MATERIALS WITH SHAPE MEMORY ABILITY | Shape memory materials are able to change their shape upon application of an external stimulus … The researchers provide an overview in their paper of how some of the latest stimuli-responsive biomaterials (SRBs), which include the shape memory polymer, are used to mimic the dynamic A shape-memory adhesive has been prepared that exhibits two levels of reversible adhesion. The adhesive is a semicrystalline cross-linked polymer that contains dynamic disulfide bonds. Melting of the crystalline regions via heat causes a drop in the modulus of the material facilitating wetting of the substrate as well as enhancing the surface contact area with the substrate, which result in 2020-01-01 The researchers provide an overview in their paper of how some of the latest stimuli-responsive biomaterials (SRBs), which include the shape memory polymer, are used to mimic the dynamic microenvironment during heart development and disease progression. 2016-12-07 2016-08-08 2016-04-25 2019-12-30 Features and properties of SPMS - Shape Memory Polymers are stimuli-responsive polymers.
This work offers a hierarchical self-assembly strategy to fabricate functional hydrogel with tailored mechanical, conductive properties and shape memory behavior for a series of promising applications such as flexible wearable electronics and intelligent actuators. The controlled stiffness properties of the hydrogel are used to develop shape‐memory hydrogels. In addition, CMC hydrogels crosslinked by donor–acceptor complexes and K + ‐stabilized G‐quadruplexes reveal stimuli‐responsive properties that exhibit dually triggered stiffness functions. Shape memory polymers (SMPs) are materials that can undergo programmable shape change in response to a specific stimulus. The ability to undergo this reliable, three-dimensional shape change makes SMPs promising smart materials for applications like biomedical stents and sutures.
Various types of stimuli-responsive SMPs such as thermal, light, pH, and Stimulus-responsive materials are categorized into two types: (1) shape-changing materials which change shape whenever a stimulus is employed, and return to their original shape upon removal of the stimulus [13,17,18,19,21,23] and (2) shape-memory materials which require a programming step, during which a sample is first deformed by an external force and then fixed in a temporary shape by a New stimulus-responsive shape-memory polyurethanes capable of UV light-triggered deformation, hydrogen bond-mediated fixation, and thermal-induced recovery† Jianfeng Ban , a Luona Mu , a Jinghao Yang , a Shaojun Chen * a and Haitao Zhuo * b In this work, we reported a multi-responsive luminescent hydrogel with properties of encryption, naked eye sensing of glucose, shape memory, self-healing, and antibacterial activity. The hydrogel (GA/CCS/DNSA/Eu3+) was obtained by mixing phenylboronic acid-modified gelatin (GA-DBA), catechol-modified carboxymethyl chitosan (CCS-PCA), 3,5-dinitrosalicylic acid (DNSA), and Eu3+ ions through a The researchers provide an overview in their paper of how some of the latest stimuli-responsive biomaterials (SRBs), which include the shape memory polymer, are used to mimic the dynamic microenvironment during heart development and disease progression. Stimuli-responsive shape-memory materials are a category of fascinating smart materials, which undergo reversible shape transformation with environmental changes.
For an explanation of the science behind this material, watch: https://www.youtube.com/watch?v=2DE3D9SLev8Elastic materials are a common part of the everyday
This article reviews the 4D printing methods and actuating performances of 4D printing structures based on shape memory polymers, hydrogels, liquid crystal elastomers, and electroactive polymers. This article shows that the shape Supramolecular shape memory hydrogels (SSMHs) refer to shape memory polymers, in which temporary shapes are stabilized by reversible crosslinks such as supramolecular interactions and dynamic covalent bonds. Following a brief introduction of the conventional shape memory polymers (SMPs), this tutorial review is focused to summarize the recent 2016-04-25 · Here we demonstrate a new reversible shape-changing component design concept enabled by 3D printing two stimuli responsive polymers—shape memory polymers and hydrogels—in prescribed 3D In this work, a novel type of shape memory polymer nanocomposite was fabricated using chemically cross-linked poly(ε-caprolactone) with allyl alcohol as the matrix and Fe3O4 nanoparticles decorated conductive multiwalled carbon nanotubes (Fe3O4@M) as a magnetism and electricity responsive source. Furthermore, excellent programmable shape memory was demonstrated by shape memory and recovery cycles at −45 °C.
The shape-memory effect at the microlevel was quantified by the recovery ratio of cuboids (R r,micro), while at the nanolevel, the recovery ratio of the nanoroughness (R r,nano) was measured. The values of R r,micro could be tailored in a range from 42 ± 1% to 102 ± 1% and R r,nano from 89 ± 6% to 136 ± 21% depending on the applied compression ratio and the amount of vinyl acetate content
ISSN 1616-301X. Their paper, co-authored with alumna Erika Salzman (BS '20) is titled " Stimuli Responsive Shape Memory Microarchitectures " and was published in the journal Advanced Functional Materials on December 8. This research was supported by the Chen Neuroscience Institute and the U.S. Department of Defense. Lightweight, micro-architected composite SMPs may overcome these size limitations and offer the ability to combine functional properties (e.g., electrical conductivity) with shape memory behavior. Stimulus-responsive materials are categorized into two types: (1) shape-changing materials which change shape whenever a stimulus is employed, and return to their original shape upon removal of The tunable microarchitectured shape memory triboelectric nanogenerators (mSM-TENG) exhibit self-restoring ability in both macro shape and micro morphology, while attaining enhanced and alterable triboelectric output (∼150–320 V, ∼2.5–4 μA cm−2) due to increased frictional effects enabled by the high surface roughness. Shape memory polymers (SMPs) are smart and adaptive materials able to recover their shape through an external stimulus.
Advanced Functional Materials . ISSN 1616-301X. (In Press) https://resolver.caltech.edu/CaltechAUTHORS:20201209-163844443
2013-08-13 · Stimuli-responsive shape memory polymers (SMPs) change their shapes in addition to other properties such as mechanical properties , phase separation , surface , permeability , optical properties , and electrical properties , upon small variation of environmental conditions such as temperature , electric field , light , magnetic field , pH value , sonic field , solvent ions , specific antigen–antibody interactions , enzymes , and glucose . in all areas of human life. Stimuli-responsive shape. memory polymers (SMPs) change their shapes in addition.
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orcid.org/https://orcid.org/0000-0002-6411-0239. Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125 USA. Search for more papers by this author. Stimuli Responsive Shape Memory Microarchitectures. Luizetta V. Elliott.
Academic and industrial research interest in the shape-memory effects (SMEs) of these SMP-based materials is growing for task-specific applications. Shape Memory Polymers and Shape Memory Polymer Compositions Responsive Towards Two Different Stimuli United States Patent Application 20090309258 Kind Code:
Polymer particles that switch shape in response to a stimulus Jin-Wook Yoo and Samir Mitragotri1 Department of Chemical Engineering, University of California, Santa Barbara, CA 93106 Edited* by David A. Tirrell, California Institute of Technology, Pasadena, CA, and approved May 14, 2010 (received for review January 10, 2010)
Stimuli Responsive Shape Memory Microarchitectures.
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Shape-memory polymers and their composites: Stimulus methods and applications Jinsong Lenga,⇑, Xin Lana, Yanju Liub, Shanyi Dua a Center for Composite Materials and Structures, Harbin Institute of Technology (HIT), P.O. Box 3011, No. 2 YiKuang Street, Harbin 150080, PR China bDepartment of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West
A series of thermoresponsive materials have been developed based on the mechanism of thermal gelation. The past decade has witnessed remarkable advances in stimuli-responsive shape memory polymers (SMPs) with potential applications in biomedical devices, aerospace, textiles, civil engineering The shape of the fibers in each process, including the temporary shape for investigating the fixation ability and recovered shape for memory ability, were observed using a camera; (3) the effect of the coupled stimuli factor on the shape recovery of the fibers was observed: ①/②/③ the temporary spiral hairs encountered with water/water/reductant solution (NaHSO 3, 1 mol/L) and the shape A shape-memory adhesive has been prepared that exhibits two levels of reversible adhesion. The adhesive is a semicrystalline cross-linked polymer that contains dynamic disulfide bonds. Melting of the crystalline regions via heat causes a drop in the modulus of the material facilitating wetting of the substrate as well as enhancing the surface contact area with the substrate, which result in The shape-memory effect at the microlevel was quantified by the recovery ratio of cuboids (R r,micro), while at the nanolevel, the recovery ratio of the nanoroughness (R r,nano) was measured.
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in all areas of human life. Stimuli-responsive shape. memory polymers (SMPs) change their shapes in addition. to other properties such as mechanical properties [1], phase separation [2], surface [3], permeability [4], optical. properties [5], and electrical properties [6], upon small.
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, 91125 USA. Search for more papers by this author. Elliott, Luizetta V. and Salzman, Erika E. and Greer, Julia R. (2020) Stimuli Responsive Shape Memory Microarchitectures. Advanced Functional Materials . ISSN 1616-301X. (In Press) https://resolver.caltech.edu/CaltechAUTHORS:20201209-163844443 Stimuli Responsive Shape Memory Microarchitectures Advanced Functional Materials ( IF 16.836) Pub Date : 2020-12-08, DOI: 10.1002/adfm.202008380 Luizetta V. Elliott, Erika E. Salzman, Julia R. Greer Shape memory polymers (SMPs) respond to heat by generating programmable movement in devices that require substantial deformation and operate at transient temperatures, including stents and in all areas of human life. Stimuli-responsive shape.
Stimuli-responsive shape-memory materials are a category of fascinating smart materials, which undergo reversible shape transformation with environmental changes. Among a large number of stimuli-responsive shape-memory materials, light-driven materials have sparked tremendous attention because of their stability, remote operability and environmentally friendly.
An example is demonstrated in the paper titled “Phase Characterization of Cucumber Growth: A Chemical Gel Model.” How do shape metal alloys work?License: Creative Commons BY-NC-SAMore information at http://k12videos.mit.edu/terms-conditions 2017-02-14 Subjecting the shapeless states to counter stimuli restores the dissociated bridges, and regenerates the original shape of the hydrogels.
Stimuli-responsive shape. memory polymers (SMPs) change their shapes in addition.