writer：Huang, S.; Sun, J.; Bisoyi, H. K.; Tao, Y.; Wang, J.; Xu, Y.; Huang, Y.; Wang, M.; Yang, H.*; Li, Q.
keywords：adhesive
source：期刊
specific source：Chemistry of Materials, 2023, 35, 3705-3712.
Issue time：2023年
Soft actuators have shown

great potential in soft robotic technologies, where the complex functions

usually originate from fundamental components with simple motion mode.

Therefore, how to convert the simple motion mode to complex motion modes

becomes a vital challenge. In contrast to rigid actuators where the simple

motion mode can be converted to complex motion modes by gearing systems and

transmission devices, manufacturing assembled soft actuators by splicing

different functional building blocks has been considered as an effective

strategy. However, most of the assembled soft actuators cannot be reconstructed

and modified once they have been fabricated because of the limitation of the

adhesion methods, making these devices unmodifiable and unreconfigurable,

typically thrown away after a single use. Endowing the assembled materials with

well-designed functions that the components do not have by designing functional

adhesives is also important. Considering that free-standing adhesive tapes can

have the features of onsite and repeatable installation, and can be integrated

with designed functions and shapes, devising assembled actuators using adhesive

tape appears to be a feasible approach. Herein, we develop a free-standing

functional adhesive tape based on polydisulfides containing the photoresponsive

azobenzene moieties (PDS-Azo), and utilize the tape to fabricate reconfigurable

and spliceable soft actuators. The chemical structures of PDS-Azo tape are

carefully designed to obtain optimized adhesion performances with photothermal

functions. Moreover, the tape could show reversible adhesion triggered by

either heating or light irradiation. It is demonstrated that the adhesive tape

can be utilized to assemble different functional building blocks to develop

smart soft devices with reconfigurability