【摘 要】
：
The gecko can cling onto vertical and inverted surfaces,and during locomotion,their feet are able to suddenly detach and reattach to a surface.The adhesive
【机 构】
：
State Key Laboratory of Chemical Engineering,Department of Chemical and Biological Engineering,Zheji
论文部分内容阅读
The gecko can cling onto vertical and inverted surfaces,and during locomotion,their feet are able to suddenly detach and reattach to a surface.The adhesive forces between the gecko foot and the opposing surface allow for the movement of gecko.Inspired by the unique gecko adhesion phenomenon,our group has been able to mimic the structure of gecko footpads,fabricating a self-peeling reversible dry adhesive with potential in transfer printing.However,this material has small recoverable strain and is too rigid to be used in transfer printing.We report a two component epoxy-amine shape memory polymer system with tunable Tg and excellent shape memory properties.Of significance is its value of strain at break,which reaches a maximum of 212%(previous maximum:~95%).Furthermore,because of the superior level of recoverable strain achieved,the success ratio of this epoxy gecko adhesive is able to reach 100% in transfer printing.We anticipate that such a high strain epoxy system will significantly broaden the opportunities for flexible electronics applications.
其他文献
As an emerging class of smart materials,shape memory polymers(SMPs)can change their shape actively in response to a stimulus.However,the applications of con
Flash NanoPrecipitation(FNP)is an easy scalable and fast processing method for preparing of nanoparticles(NPs)with a simply vortex equipment.By using the FN
The development of stimuli-responsive materials is important for smart devices and systems.Among them,graphene with outstanding electric,thermal,mechanical
Gradient copolymers(GCs)are a novel class of copolymers which possess the gradual variation in composition from one end to the other along the whole polymer
Polyelectrolytes easily form complexes and aggregate into highly compact structures in the presence of multivalent ions or molecules of high valence of oppo
Owing to their low toxicity,biodegradability and biocompatibility,aliphatic poly(carbonate)s(APCs)have been widely studied as materials for biomedical appli
Electrospinning has become a versatile technique to produce continuous fibers with micrometer and nanometer diameters from a variety of polymer solutions or
Cryo-gelation existed extensively as an advanced technique for fabrication of porous structures.Here,we report the synthesis of multifunctional acrylate-bas
All-polymer solar cells(all-PSCs)based on Perylene diimides(PDIs),as a potential developing system,have attracted significant interest because of their more
Bulk heterojunction(BHJ)polymer solar cells(PSCs)[1] have made significant progress in the past few years.Power conversion efficiency(PCE)of higher than 10%