Liquid Metal / Block Copolymer Multilayer Composite for Stretchable Moisture Encapsulation
- Title
- Liquid Metal / Block Copolymer Multilayer Composite for Stretchable Moisture Encapsulation
- Authors
- FAIZ, SALMA
- Date Issued
- 2021
- Publisher
- 포항공과대학교
- Abstract
- An encapsulation barrier is required for proper application of electronic devices since gas and moisture have a direct influence on their stability and reliability. While flexible moisture barriers have already been developed and demonstrated a low range permeability, stretchable barriers for stretchable electronic devices are still challenging. This study suggests an organic-inorganic multilayer structure as a moisture barrier for stretchable devices. The multilayer encapsulation barrier consists of an alternation between poly(styrene-b-isobutylene-b-styrene) copolymer (SiBS) and Eutectic-GaIn liquid metal (LM) with 4 μm and less than 2 μm thickness, respectively. The barrier has a water evaporation rate of 0.0125 mg/h and is stretchable up to 50% uniaxial strain (). The formation of thin oxide layer on LM surface reduces the moisture penetration, which improves the barrier property, while preserving the stretchability of polymeric substrates. In addition, we demonstrate a humidity-insensitive ionic-gel based temperature sensor using the multilayer moisture barrier.
- URI
- http://postech.dcollection.net/common/orgView/200000601133
https://oasis.postech.ac.kr/handle/2014.oak/112088
- Article Type
- Thesis
- Files in This Item:
- There are no files associated with this item.
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