Zhongwei Xu,Chaoxing Wu,Yangbin Zhu,Songman Ju,Fumin Ma,Tailiang Guo,Fushan Li,Tae Whan Kim
The development of artificial skin, such as electronic skin, is critical to emerging artificial intelligence systems. Electronic skins reported to date are mechanically flexible, and can detect various stimuli, but lack the ability to regulate themselves and learn information from the outside world. The integration of bio-inspired multifunction in a single electronic platform is critical to the development of e-skin systems. Here, we demonstrate a self-powered, light-stimulated, smart e-skin based on a photosensitive perovskite material. The electronic skin implements the functions of both tactile sensing and photoelectric neural computing. The strategy for developing such a material system and architecture of the electronic skin meets the requirement of multifunctional smart human–machine interfaces and has promising potential for application in future artificial intelligence systems.
Graphical Stacking gels : Factors affecting the self-assembly of supramolecular hydrogels composed of combining 5′-adenosine monophosphate and Ag + are discussed (see figure). The gelation capability was enhanced by increasing the concentration of Ag + or decreasing the pH. The gels are very sensitive to light and have potential applications as photosensitive materials. Supramolecular hydrogels obtained by combining 5′-adenosine monophosphate (AMP) with Ag + were fabricated in this work. Their gelation capability was enhanced by increasing the concentration of Ag + or decreasing the pH. The gels are very sensitive to light, which endows them with potential applications as visible-light photosensitive materials. Coordination between the nucleobase of AMP and Ag + , as well as π–π stacking of nucleobases, are considered to be the main driving forces for self-assembly. The hydrogels successfully achieved the encapsulation and enrichment of biomolecules. Hydrogen bonding between the amino group of guest molecules and silver nanoparticles along the nanofibers drives the enrichment and is considered to be a crucial interaction.
Yang Gao,Jing Li,Jiaming Hu,Lu-kun Wu,Shuai Zhang,Kai Du
Epoxy acrylate (EA) has excellent thermal performance, mechanical properties, and chemical stability, making it become typical representative of thermosetting resins. Dynamic C-N bond was introduced through chemical click between triazolinedione (TAD) and indole, resulting in EA polymers with different mass ratios. Among them, the 80wt% EA-10:3 has strongest tensile strength of 71.03 MPa with an elongation at break of 7%, while the 90wt% EA-10:2.5 has relatively excellent modulus and hardness of 5.21 GPa and 223 MPa, respectively. In addition, 90wt% EA-10:3 polymer exhibits good two-photon polymerization printing performance with scanning speeds of 100 μm/s -100000 μm/s and laser powers of 5 mW-50 mW. Simultaneously the sample block exhibits mechanical properties with modulus and hardness of 5.12 GPa and 230 MPa under the laser powers of 30 mW. In situ relaxation fluorescence spectroscopy was used to characterize the dynamic behavior of C-N bonds in force reversible polymer networks. This work proposes a valuable strategy to enhance the functionality of EA polymers in various special performance material applications, while maintaining its strength and toughness.
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