Jeong-Yun Sun

TL;DR: The synthesis of hydrogels from polymers forming ionically and covalently crosslinked networks is reported, finding that these gels’ toughness is attributed to the synergy of two mechanisms: crack bridging by the network of covalent crosslinks, and hysteresis by unzipping thenetwork of ionic crosslinks.

TL;DR: A class of devices enabled by ionic conductors that are highly stretchable, fully transparent to light of all colors, and capable of operation at frequencies beyond 10 kilohertz and voltages above 10 kilovolts are described.

TL;DR: An ionic touch panel based on a polyacrylamide hydrogel containing lithium chloride salts is demonstrated, which can be operated under more than 1000% areal strain without sacrificing its functionalities.

TL;DR: A family of alginate/polyacrylamide hydrogels using various multivalent cations is synthesized, which exhibits exceptional mechanical properties and is discovered that the hydrogel cross-linked by trivalent cations are much stronger than those cross- linked by divalent cATIONS.

TL;DR: Alginate/PAAM IPN hydrogels can sustain a compressive strain of over 90% with minimal loss of Young's Modulus as well as minimal swelling for up to 50 days of soaking in culture conditions, and although cells exposed to conditioned media demonstrate slight reductions in proliferation and metabolic activity, these effects are abrogated in a dose-dependent manner.