Nanohydrogel Brushes for Switchable Underwater Adhesion | |
Department | 固体润滑国家重点实验室 |
Ma SH(麻拴红)1; Michele Scaraggi2,3; Lin P(林鹏)1; Yu B(于波)1; Wang DA(王道爱)1; Daniele Dini3; Zhou F(周峰)1; Zhou F(周峰) | |
2017 | |
Source Publication | Journal of Physical Chemistry C |
ISSN | 1932-7447 |
Volume | 121Issue:15Pages:8452-8463 |
Abstract | In nature, living systems commonly adopt the switchable friction/adhesion mechanism during locomotion. For example, geckos can move on ceilings, relying on the reversible attachment and detachment of their feet on substrate surfaces. Inspired by this scientists have used different materials to mimic natural dynamic friction/adhesion systems. However, synthetic systems usually cannot work in water environments and are also limited to single-contact interfaces, while nature has provided living systems with complex features to perform energy dissipation and adhere on multiple contact interfaces. Here, for the first time, we report the design, synthesis, and testing of a novel double-sided synthetic construct that relies on nanohydrogel brushes to provide simultaneous friction switching on each side of the membrane that separates the nanohydrogel fibers. This highly tunable response is linked to the swelling and shrinkage of the brushes in basic/acid media. Such a system shows three different friction states, which depend on the combination of pH control of the two membrane sides. Importantly, each side of the membrane can independently provide continuous but stable friction switching from high to ultralow friction coefficients in a wet environment under high load conditions. An in-depth theoretical study is performed to explore the mechanisms governing the hydration state responsible for the observed switching. This novel design opens a promising route for the development of new solutions for intelligent devices, which can adapt to multistimulus-responsive complex environments. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1021/acs.jpcc.7b01305 |
Funding Organization | NSFC (20432009;51573199;51335010);D.D. acknowledges support of the Engineering and Physical Sciences Research Council (EPSRC) through the Platform grant EP/G026114/1 and his Established Career Fellowship EP/N025954/1 |
Indexed By | SCI |
If | 4.536 |
Language | 英语 |
Funding Project | 材料表面界面研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22182 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Daniele Dini; Zhou F(周峰) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Salento, Dept Engn Innovat, I-73100 Monteroni Lecce, Italy 3.Imperial Coll London, Dept Mech Engn, South Kensington Campus,Exhibit Rd, London SW7 2AZ, England |
Recommended Citation GB/T 7714 | Ma SH,Michele Scaraggi,Lin P,et al. Nanohydrogel Brushes for Switchable Underwater Adhesion[J]. Journal of Physical Chemistry C,2017,121(15):8452-8463. |
APA | Ma SH.,Michele Scaraggi.,Lin P.,Yu B.,Wang DA.,...&周峰.(2017).Nanohydrogel Brushes for Switchable Underwater Adhesion.Journal of Physical Chemistry C,121(15),8452-8463. |
MLA | Ma SH,et al."Nanohydrogel Brushes for Switchable Underwater Adhesion".Journal of Physical Chemistry C 121.15(2017):8452-8463. |
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acs.jpcc.7b01305.pdf(9149KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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