writer：Nie, Z.; Wang, M.; Huang, S.; Liu, Z.; Yang, H.*
keywords：topology, Liquid Crystal Elastomer
source：期刊
specific source：Angewandte Chemie International Edition, 2023, 62, e202304081
Issue time：2023年

Multimodal self-sustainable autonomous loco-

motions integrated into one individual system, are high-

level

intelligent

behavioral

characteristics

of

living

organisms and are the scientific hotspot of bionic soft

actuators. Here, we report a light-fueled soft actuator

with multimodal self-sustainable movements based on a

Seifert ribbon bounded by a Hopf link. The Seifert

ribbon actuator can self-sense the illumination area

adjustment, and the actuation component becomes

either a discontinuous strip-like structure or a continu-

ous

toroidal

structure,

which

can

realize

adaptive

switches between self-sustained oscillatory and rotary

motions. The two motion modes are applied to the self-

oscillatory piezoelectric generation and self-rotational

work multiplication of cargo transport, respectively. The

unique smartness of Seifert surface topology advances

the level of actuation intelligence with broad implica-

tions

for

the

adaptability,

multifunctionality,

and

autonomy of soft robots.