Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Polymer Classification: Stereospecificity01:26

Polymer Classification: Stereospecificity

Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
Molecular Weight of Step-Growth Polymers01:08

Molecular Weight of Step-Growth Polymers

Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
Long-term Potentiation01:35

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Glioblastoma induces whole-brain spectral change in resting state fMRI: Associations with clinical comorbidities and overall survival.

NeuroImage. Clinical·2023
Same author

Conformal in-ear bioelectronics for visual and auditory brain-computer interfaces.

Nature communications·2023
Same author

Hierarchies in Visual Pathway: Functions and Inspired Artificial Vision.

Advanced materials (Deerfield Beach, Fla.)·2023
Same author

Slow-wave modulation analysis during states of unconsciousness using the novel tau-modulation method.

Journal of neural engineering·2023
Same author

Simulation and Experimental Study of a Piezoelectric Stack Energy Harvester for Railway Track Vibrations.

Micromachines·2023
Same author

Genome-wide Association Identifies Novel Etiological Insights Associated with Parkinson's Disease in African and African Admixed Populations.

medRxiv : the preprint server for health sciences·2023
Same journal

Retraction Note: NSD2 targeting reverses plasticity and drug resistance in prostate cancer.

Nature·2026
Same journal

Enhanced B cell priming induces broadly neutralizing HIV-1 apex antibodies.

Nature·2026
Same journal

Vaccination elicits HIV broadly neutralizing antibodies in primates.

Nature·2026
Same journal

Child online safety needs more than social-media bans.

Nature·2026
Same journal

Ebola preparedness must start with ecosystems and before humans show symptoms.

Nature·2026
Same journal

AI tools can speed up thinking, but evidence still comes from the lab bench.

Nature·2026
查看所有相关文章

相关实验视频

Updated: Jun 15, 2026

Shape Memory Polymers for Active Cell Culture
10:53

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

可调整的聚合物多形状记忆效应效应.

Tao Xie1

  • 1Mail Code: 480-106-710, Chemical Sciences and Materials Systems Laboratory, General Motors Research and Development Center, 30500 Mound Road, Warren, Michigan 48090-9055, USA. tao.xie@gm.com

Nature
|March 12, 2010
PubMed
概括
此摘要是机器生成的。

perfluorosulphonic acid ionomers (PFSAs) 显示出多种形状记忆效应,包括双,三,四重,而不会改变材料组成. 这一突破为先进的应用增强了形状记忆聚合物的功能.

更多相关视频

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

相关实验视频

Last Updated: Jun 15, 2026

Shape Memory Polymers for Active Cell Culture
10:53

Shape Memory Polymers for Active Cell Culture

Published on: July 4, 2011

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物化学 聚合物化学
  • 纳米技术纳米技术

背景情况:

  • 形状记忆聚合物 (SMP) 在航空航天和生物医学等应用中具有变革潜力,因为它们能够恢复编程的形状.
  • 目前的SMP仅限于记住一个或两个临时形状,限制了它们的复杂性和实用性.
  • 实现多形状记忆效应通常需要复杂的合成来引入多个相位过渡或材料组成的变化来调整过渡温度.

研究的目的:

  • 为了研究 perfluorosulphonic 酸离子体 (PFSAs) 显示多形状记忆效应的潜力.
  • 为了证明可调节的多形状记忆效果可以在单一材料中实现,而不会改变其组成.
  • 克服现有的形状记忆聚合物的局限性,即记住的形状数量和可调性.

主要方法:

  • 作为研究材料使用了完硫酸离子体 (PFSA).
  • 在各种刺激下研究了PFSA的形状记忆行为.
  • 标志着PFSA材料中的可逆相变的特征.
  • 证明了编程和恢复多个临时形状的能力.

主要成果:

  • perfluorosulphonic 酸离子体 (PFSA) 呈现双重,三重和至少四重形状记忆效应.
  • 尽管PFSA只具有一个广泛的可逆相位过渡,但这些多形状记忆能力得到了实现.
  • 形状记忆转换温度是高度调节的,没有任何修改PFSA材料组成.

结论:

  • perfluorosulphonic 酸离子体代表了一种新的材料类,能够产生前所未有的多形状记忆效应.
  • 能够在没有组合变化的情况下调整过渡温度,为实际应用提供了显著的优势.
  • 这项研究扩大了形状记忆聚合物的功能,为更复杂的智能材料铺平了道路.