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Enhancing the Scratch Resistance by Introducing Chemical Bonding in Highly Stretchable and Transparent Electrodes.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Guo, Chuan Fei Chen, Yan Tang, Lu Wang, Fuqiang Ren, Zhifeng |
| Copyright Year | 2016 |
| Abstract | Stretchable transparent electrodes are key elements in flexible electronics and e-skins. However, existing stretchable transparent electrodes, including graphene sheets, carbon nanotube, and metal nanowire networks, weakly adheres to the substrate by van der Waals forces. Such electrodes suffer from poor scratch-resistance or poor durability, and this issue has been one of the biggest problems for their applications in industry. Here we show that, by introducing a Au-S bond between a Au nanomesh (AuNM) and the underlying elastomeric substrate, the AuNM strongly adheres to the substrate and can withstand scratches of a pressure of several megapascals. We find that the strong chemical bond, on the other hand, leads to a stiffening effect and localized rupture of the AuNM upon stretching; thus the stretchability is poor. A prestraining process is applied to suppress the localized rupture and has successfully improved the stretchability: electrical resistance of the prestrained AuNM exhibits modest change by one-time stretching to 160%, or repeated stretching to 50% for 25 000 cycles. This conductor is an ideal platform for robust stretchable photoelectronics. The idea of introducing a covalent bond to improve the scratch-resistance may also be applied to other systems including Ag nanowire films, carbon nanotube films, graphene, and so forth. |
| Starting Page | 594 |
| Ending Page | 600 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/acs.nanolett.5b04290 |
| PubMed reference number | 26674364 |
| Journal | Medline |
| Volume Number | 16 |
| Issue Number | 1 |
| Alternate Webpage(s) | http://dspace.imech.ac.cn/bitstream/311007/58643/1/a2016-143.pdf |
| Journal | Nano letters |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
