共查询到5条相似文献,搜索用时 0 毫秒
1.
Tissue Engineering: Liquid Crystalline Networks toward Regenerative Medicine and Tissue Repair (Small 46/2017) 下载免费PDF全文
Daniele Martella Paolo Paoli Josè M. Pioner Leonardo Sacconi Raffaele Coppini Lorenzo Santini Matteo Lulli Elisabetta Cerbai Diederik S. Wiersma Corrado Poggesi Cecilia Ferrantini Camilla Parmeggiani 《Small (Weinheim an der Bergstrasse, Germany)》2017,13(46)
2.
Matthew K. McBride Matthew Hendrikx Danqing Liu Brady T. Worrell Dirk J. Broer Christopher N. Bowman 《Advanced materials (Deerfield Beach, Fla.)》2017,29(17)
Photoactivated reversible addition fragmentation chain transfer (RAFT)‐based dynamic covalent chemistry is incorporated into liquid crystalline networks (LCNs) to facilitate spatiotemporal control of alignment, domain structure, and birefringence. The RAFT‐based bond exchange process, which leads to stress relaxation, is used in a variety of conditions, to enable the LCN to achieve a near‐equilibrium structure and orientation upon irradiation. Once formed, and in the absence of subsequent triggering of the RAFT process, the (dis)order in the LCN and its associated birefringence are evidenced at all temperatures. Using this approach, the birefringence, including the formation of spatially patterned birefringent elements and surface‐active topographical features, is selectively tuned by adjusting the light dose, temperature, and cross‐linking density. 相似文献
3.
A Micropatterned Human Pluripotent Stem Cell‐Based Ventricular Cardiac Anisotropic Sheet for Visualizing Drug‐Induced Arrhythmogenicity 下载免费PDF全文
Angie M. Y. Shum Hui Che Andy On‐Tik Wong Chenzi Zhang Hongkai Wu Camie W. Y. Chan Kevin Costa Michelle Khine Chi‐Wing Kong Ronald A. Li 《Advanced materials (Deerfield Beach, Fla.)》2017,29(1)
4.
Liquid‐Crystalline Dynamic Networks Doped with Gold Nanorods Showing Enhanced Photocontrol of Actuation 下载免费PDF全文
Xili Lu Hu Zhang Guoxia Fei Bing Yu Xia Tong Hesheng Xia Yue Zhao 《Advanced materials (Deerfield Beach, Fla.)》2018,30(14)
A near‐infrared‐light (NIR)‐ and UV‐light‐responsive polymer nanocomposite is synthesized by doping polymer‐grafted gold nanorods into azobenzene liquid‐crystalline dynamic networks (AuNR‐ALCNs). The effects of the two different photoresponsive mechanisms, i.e., the photochemical reaction of azobenzene and the photothermal effect from the surface plasmon resonance of the AuNRs, are investigated by monitoring both the NIR‐ and UV‐light‐induced contraction forces of the oriented AuNR‐ALCNs. By taking advantage of the material's easy processability, bilayer‐structured actuators can be fabricated to display photocontrollable bending/unbending directions, as well as localized actuations through programmed alignment of azobenzene mesogens in selected regions. Versatile and complex motions enabled by the enhanced photocontrol of actuation are demonstrated, including plastic “athletes” that can execute light‐controlled push‐ups or sit‐ups, and a light‐driven caterpillar‐inspired walker that can crawl forward on a ratcheted substrate at a speed of about 13 mm min‐1. Moreover, the photomechanical effects arising from the two types of light‐triggered molecular motion, i.e., the trans–cis photoisomerization and a liquid‐crystalline–isotropic phase transition of the azobenzene mesogens, are added up to design a polymer “crane” that is capable of performing light‐controlled, robot‐like, concerted macroscopic motions including grasping, lifting up, lowering down, and releasing an object. 相似文献
5.
Chen A Lieu DK Freschauf L Lew V Sharma H Wang J Nguyen D Karakikes I Hajjar RJ Gopinathan A Botvinick E Fowlkes CC Li RA Khine M 《Advanced materials (Deerfield Beach, Fla.)》2011,23(48):5785-5791
A biomimetic substrate for cell-culture is fabricated by plasma treatment of a prestressed thermoplastic shrink film to create tunable multiscaled alignment "wrinkles". Using this substrate, the functional alignment of human embryonic stem cell derived cardiomyocytes is demonstrated. 相似文献