具有多个滑动路径的二维GaInS3同质结的负微分摩擦预测

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-08-05 DOI:10.1063/5.0272213

Mengbing Liu, Xiaobo Shi, Xingxu Meng, Yaxin Pan, Huabing Yin

{"title":"具有多个滑动路径的二维GaInS3同质结的负微分摩擦预测","authors":"Mengbing Liu, Xiaobo Shi, Xingxu Meng, Yaxin Pan, Huabing Yin","doi":"10.1063/5.0272213","DOIUrl":null,"url":null,"abstract":"Derived by exploring the essence of friction from a microscopic perspective, the theory of negative differential friction involves an abnormal negative friction coefficient μ, which provides a way to research friction and has attracted much attention in recent years. Here, first-principles calculations are used to predict that negative μ as measured by the slope of corrugation in the sliding potential-energy barrier subject to an external load can be achieved when bilayer GaInS3 in commensurate contact slides relatively along the b-direction. Such remarkable observations can be attributed to the competition and alternating dominance of the van der Waals attraction regime and the electronic repulsion regime between the layers caused by variation of interlayer distance during pressurization. In addition, the transfer and redistribution of interlayer charges enhance the S–In and S–Ga ionic bonds of the maximum-energy configuration, further lowering the potential-energy corrugation and causing negative differential friction. This study not only identifies a material exhibiting a negative friction coefficient during relative sliding across multiple configurations but also uncovers the physical mechanism behind this phenomenon. These findings offer fresh theoretical insights and practical possibilities for addressing friction-related challenges.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"54 20 1","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Negative differential friction predicted in a 2D GaInS3 homojunction with multiple sliding pathways\",\"authors\":\"Mengbing Liu, Xiaobo Shi, Xingxu Meng, Yaxin Pan, Huabing Yin\",\"doi\":\"10.1063/5.0272213\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Derived by exploring the essence of friction from a microscopic perspective, the theory of negative differential friction involves an abnormal negative friction coefficient μ, which provides a way to research friction and has attracted much attention in recent years. Here, first-principles calculations are used to predict that negative μ as measured by the slope of corrugation in the sliding potential-energy barrier subject to an external load can be achieved when bilayer GaInS3 in commensurate contact slides relatively along the b-direction. Such remarkable observations can be attributed to the competition and alternating dominance of the van der Waals attraction regime and the electronic repulsion regime between the layers caused by variation of interlayer distance during pressurization. In addition, the transfer and redistribution of interlayer charges enhance the S–In and S–Ga ionic bonds of the maximum-energy configuration, further lowering the potential-energy corrugation and causing negative differential friction. This study not only identifies a material exhibiting a negative friction coefficient during relative sliding across multiple configurations but also uncovers the physical mechanism behind this phenomenon. These findings offer fresh theoretical insights and practical possibilities for addressing friction-related challenges.\",\"PeriodicalId\":8094,\"journal\":{\"name\":\"Applied Physics Letters\",\"volume\":\"54 20 1\",\"pages\":\"\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-08-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics Letters\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1063/5.0272213\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1063/5.0272213","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}

引用次数: 0

摘要

负微分摩擦理论是从微观角度探索摩擦的本质而衍生出来的，它涉及到一个异常的负摩擦系数μ，为研究摩擦提供了一种方法，近年来受到广泛关注。本文利用第一性原理计算预测了当双分子层GaInS3在等量接触下沿b方向相对滑动时，在受外部载荷作用下，滑动势能势垒的波纹斜率可以达到负μ。这种显著的观察结果可归因于加压过程中层间距离变化引起的层间范德华吸引和电子排斥制度的竞争和交替优势。此外，层间电荷的转移和再分配增强了最大能构型的S-In和S-Ga离子键，进一步降低了势能波纹，导致负差摩擦。本研究不仅发现了一种材料在多种构型的相对滑动过程中表现出负摩擦系数，而且揭示了这种现象背后的物理机制。这些发现为解决与摩擦相关的挑战提供了新的理论见解和实践可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Negative differential friction predicted in a 2D GaInS3 homojunction with multiple sliding pathways

Derived by exploring the essence of friction from a microscopic perspective, the theory of negative differential friction involves an abnormal negative friction coefficient μ, which provides a way to research friction and has attracted much attention in recent years. Here, first-principles calculations are used to predict that negative μ as measured by the slope of corrugation in the sliding potential-energy barrier subject to an external load can be achieved when bilayer GaInS3 in commensurate contact slides relatively along the b-direction. Such remarkable observations can be attributed to the competition and alternating dominance of the van der Waals attraction regime and the electronic repulsion regime between the layers caused by variation of interlayer distance during pressurization. In addition, the transfer and redistribution of interlayer charges enhance the S–In and S–Ga ionic bonds of the maximum-energy configuration, further lowering the potential-energy corrugation and causing negative differential friction. This study not only identifies a material exhibiting a negative friction coefficient during relative sliding across multiple configurations but also uncovers the physical mechanism behind this phenomenon. These findings offer fresh theoretical insights and practical possibilities for addressing friction-related challenges.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.