DataVXACS Applied Materials & InterfacesPaper
journal article·2022-09-21

Bioinspired Functional Structures for Lubricant Control at Surfaces and Interfaces: Wedged-Groove with Oriented Capillary Patterns

Sangqiu Chen, Qingwen Dai, Xiaolong Yang, Jiongjie Liu, Wei Huang, Xiaolei Wang

ACS Applied Materials & Interfaces· Volume 14· Issue 37
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Source abstract

Abstract

In this work, a design concept of bioinspired functional surfaces is proposed for lubricant control at surfaces and interfaces subjected to external thermal gradients. Inspired by the conical structures of cactus and the motion configuration of Centipedes, a bioinspired surface of wedged-groove with an oriented capillary pattern is constructed. The effect of geometrical parameters on the directional lubricant manipulation capacity and sliding anisotropy is discussed. It is found that by regulating the orientation of the capillary pattern, a controllable lubricant self-transport capacity can be achieved for varying conditions from surfaces to interfaces, with or without thermal gradients. The lubricant self-transport process is captured, and the mechanism is revealed. The design philosophy of the proposed bioinspired functional surface is believed to have potential applications for lubricant control in modern machinery and complex liquid control in lab-on-a-chip and microfluidics devices.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Adhesion, Friction, and Surface Interactions · Surface Modification and Superhydrophobicity · Tribology and Lubrication Engineering

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Institute for Nano- and Microfluidics, Technische Universität Darmstadt, Darmstadt 64287, Germany

State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China

Aero-Engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology, Nanjing 210016, China

Institute for Materialwissenschaft, Technische Universität Darmstadt, Darmstadt 64287, Germany

Funding

State Key Laboratory of Tribology · Ministry of Industry and Information Technology of the People's Republic of China · Alexander von Humboldt-Stiftung · National Natural Science Foundation of China

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