Designing metainterfaces with specified friction laws

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-01-11 DOI:10.1126/science.adk4234

Antoine Aymard, Emilie Delplanque, Davy Dalmas, Julien Scheibert

引用次数: 2

Abstract

Many devices, including touchscreens and robotic hands, involve frictional contacts. Optimizing these devices requires fine control of the interface’s friction law. We lack systematic methods to create dry contact interfaces whose frictional behavior satisfies preset specifications. We propose a generic surface design strategy to prepare dry rough interfaces that have predefined relationships between normal and friction forces. Such metainterfaces circumvent the usual multiscale challenge of tribology by considering simplified surface topographies as assemblies of spherical asperities. Optimizing the individual asperities’ heights enables specific friction laws to be targeted. Through various centimeter-scaled elastomer-glass metainterfaces, we illustrate three types of achievable friction laws, including linear laws with a specified friction coefficient and unusual nonlinear laws. This design strategy represents a scale- and material-independent, chemical-free pathway toward energy-saving and adaptable smart interfaces.

查看原文本刊更多论文

设计具有特定摩擦定律的金属界面

包括触摸屏和机器人手在内的许多设备都涉及摩擦接触。优化这些设备需要对界面的摩擦规律进行精细控制。我们缺乏系统的方法来创建摩擦行为符合预设规范的干接触界面。我们提出了一种通用表面设计策略，用于制备法向力和摩擦力之间具有预定关系的干式粗糙界面。通过将简化的表面形貌视为球形非球面的集合体，这种元界面规避了摩擦学通常面临的多尺度挑战。通过优化单个非球面的高度，可以针对特定的摩擦规律进行研究。通过各种以厘米为单位的弹性体-玻璃金属表面，我们展示了三种可实现的摩擦规律，包括具有特定摩擦系数的线性规律和非同寻常的非线性规律。这种设计策略代表了一种不受尺度和材料影响、不含化学物质的节能和适应性强的智能界面设计方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

期刊介绍： Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.