Micropatterned Elastomeric Composites for Encapsulation of Transient Electronics
ACS NANO(2023)
摘要
Although biodegradable, transientelectronic devicesmust dissolveor decompose via environmental factors, an effective waterproofingor encapsulation system is essential for reliable, durable operationfor a desired period of time. Existing protection approaches use multipleor alternate layers of electrically inactive organic/inorganic elementscombined with polymers; however, their high mechanical stiffness isnot suitable for soft, time-dynamic biological tissues/skins/organs.Here, we introduce a stretchable, bioresorbable encapsulant usingnanoparticle-incorporated elastomeric composites with modificationsof surface morphology. Nature-inspired micropatterns reduce the diffusionarea for water molecules, and embedded nanoparticles impede waterpermeation, which synergistically enhances the water-barrier performance.Empirical and theoretical evaluations validate the encapsulation mechanismsunder strains. Demonstration of a soft, degradable shield with anoptical component under a biological solution highlights the potentialapplicability of the proposed encapsulation strategy.
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关键词
biodegradable elastomer, polymer composite, stretchable encapsulation, biodegradableelectronics, transient electronics
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