| 초록 |
As the demand for soft and flexible devices steadily increases, the ionic applications demonstrated with gel materials have come under the spotlight. Here, stretchable ionic diodes (SIDs) made from polyelectrolyte hydrogels are introduced. Polyelectrolyte hydrogels were mechanically modified by methacrylated polysaccharides, forming interpenetrating networks (IPN) while preserving the ion-selectivity of poly(sulfopropyl acrylate) potassium salt (PSPA) and poly([acrylamidopropyl]trimethylammonium chloride) (PDMAPAA-Q). Then, SIDs composed of interpenetrating polyelectrolyte gels were fabricated in VHBTM substrates engraved by a laser. The SIDs showed rectifying behaviours under a maximum stretch of 3 and preserved their rectifications over hundreds of cycles. A wearable ionic circuit with LEDs operating during finger movements was also demonstrated as a corollary application of SIDs. |
