期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 43, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.202200012
关键词
adhesion switching; dry adhesives; glass transfer systems; shape memory polymers; surface adaptability
资金
- National Research Foundation of Korea [NRF-2020R1A4A1018652, 2019R1A2C1086766]
- Bridge program by the Korea Environmental Industry &Technology Institute - Korean government [2021002800015]
- National Research Foundation of Korea [2019R1A2C1086766] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A switchable dry adhesive inspired by gecko feet, with high adhesion and easy detachment capabilities, is proposed in this study. The adhesive is able to reversibly recover from a deformed state to its initial shape, showing great potential in advanced glass transfer applications.
Gecko feet consist of numerous micro/nano hierarchical hairs and exhibit a high adhesion onto various surfaces by van der Waals forces. The gecko, despite its mighty adhesion, can travel efficiently with a rapid adhesion switching due to the end of the hairs on the gecko feet are slanted in one direction. Herein, a shape memory polymer (SMP)-based switchable dry adhesive (SSA), inspired by gecko feet, having tremendous surface adaptability and adhesion switching capability, is reported. The SSA shows not only high adhesion to the various surfaces (approximate to 332.8 kPa) but also easy detachment (nearly 3.73 kPa) due to the characteristic of SMP, which can reversibly recover from a deformed shape to its initial shape. On the basis of the novel adhesion switching property, it is suggested the SSA-applied advanced glass transfer system can lead to feasible application. This experiment confirms that an ultrathin and light glass film is transferred easily and sustainably, and it is believed that the SSA may be a breakthrough and a powerful alternative for not only conventional dry adhesives but also the next-level transfer systems.
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