ChangKyu Yoon

TL;DR: This work designs, fabricate, and characterize photopatterned, self-folding functional microgrippers that combine a swellable, photo-cross-linked pNIPAM-AAc soft-hydrogel with a nonswellable and stiff segmented polymer (polypropylene fumarate, PPF).

TL;DR: It is demonstrated that specific DNA molecules can induce 100-fold volumetric hydrogel expansion by successive extension of cross-links, introducing the possibility of building soft devices that respond to diverse biochemical inputs and autonomously implement chemical control programs.

TL;DR: A photolithographic approach to create functional stimuli responsive, self-folding, microscale hydrogel devices using thin, gradient cross-linked hinges and thick, fully cross- linked panels with reversible stimuli responsive properties just below physiological temperatures is described.

TL;DR: In this mini-review, untethered soft grippers are discussed, with an emphasis on a class of autonomous stimuli-responsive gripping soft tools that can be used to excise tissues and release drugs in a controlled manner.

TL;DR: The photopatterning of bilayer gels composed of a thermally responsive high-swelling poly(oligoethylene glycol methyl ether methacrylate), P(OEGMA-DSDMA) layer, in the shape of untethered grippers, which demonstrate that the grippers can be doped with magnetic nanoparticles so that they can be moved using magnetic fields or loaded with chemicals for potential applications as drug-eluting theragrippers.