Variable Rigidity Module with a Flexible Thermoelectric Device for Bidirectional Temperature Control

Title
Variable Rigidity Module with a Flexible Thermoelectric Device for Bidirectional Temperature Control
Authors
김승원Choong Sun KimOck Kyun OhHyeongdo ChoiYong Jun KimGyu Soup LeeHyun Jung KimCarmel MajidiByung Jin Cho
Keywords
variable stiffness; phase change materials; thermoelectric cooler; active temperature control; low melting point material; flexible thermoelectric device
Issue Date
2020-10
Publisher
Soft Robotics
Citation
VOL 게재예정, 게재예정
Abstract
Dynamic stiffness tuning is a promising approach for shape reconfigurable systems that must adapt their flexibility in response to changing operational requirements. Among stiffness tuning technologies, phase change materials are particularly promising because they are size scalable and can be powered using portable electronics. However, the long transition time required for phase change is a great limitation for most applications. In this study, we address this by introducing a rapidly responsive variable rigidity module with a low melting point material and flexible thermoelectric device (f-TED). The f-TED can conduct bidirectional temperature control; thereby, both heating and cooling were accomplished in a single device. By performing local cooling, the phase transition time from liquid to solid is reduced by 77%. The module in its rigid state shows 14.7 x higher bending stiffness than in the soft state. The results can contribute to greatly widening the application of phase transition materials for variable rigidity.
URI
http://pubs.kist.re.kr/handle/201004/72269
ISSN
2169-5172
Appears in Collections:
KIST Publication > Article
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