Results 31 to 40 of about 20,603 (183)

Contacts With Negative Work of “Adhesion” and Superlubricity [PDF]

, 2020
Van der Waals forces between solids in vacuum are always attractive and are considered as the main source of adhesion. However, in the presence of an intermediate medium, they can also be repelling (Dzyaloshinskii et al., 1961) which means that the “work
Popov, Valentin L.
core   +1 more source

Velocity Dependence of Moiré Friction [PDF]

, 2022
Friction force microscopy experiments on moiré superstructures of graphene-coated platinum surfaces demonstrate that in addition to atomic stick–slip dynamics, a new dominant energy dissipation route emerges.
Gao, Xiang, Glatzel, Thilo, Hinaut, Antoine, Hod, Oded, Huang, Shuyu, Meyer, Ernst, Scherb, Sebastian, Song, Yiming, Urbakh, Michael   +8 more
core   +1 more source

Understanding and Preventing Lubrication Failure at the Carbon Atomic Steps

Small, Volume 19, Issue 37, September 13, 2023., 2023
At the graphene step edge, the armchair (AC) structure gives only a minor topographic effect on friction, while the zigzag (ZZ) structure induces friction two orders of magnitude larger than the basal friction. The high‐friction ZZ edge becomes superlubricious through reconstructing to the (5,7) azulene‐like structure upon thermal annealing in an inert
Wenmeng Yan, Fakhrul H. Bhuiyan, Chuan Tang, Liang Wei, Yilong Jiang, Seokhoon Jang, Yangqin Liu, Jiang Wu, Wen Wang, Yang Wang, Ashlie Martini, Linmao Qian, Seong H. Kim, Lei Chen   +13 more
wiley   +1 more source

Innovative Technology for Self‐Powered Sensors: Triboelectric Nanogenerators

Advanced Sensor Research, Volume 2, Issue 5, May 2023., 2023
Internet of Things and wearable technology's quick development have opened up a vast market for sensor systems. Triboelectric nanogenerators (TENGs) efficiently provide crucial infrastructure for a new generation of sensing devices that gather data using several self‐powered sensors in abundance.
Nannan Wang, Yupeng Liu, Enyi Ye, Zibiao Li, Daoai Wang   +4 more
wiley   +1 more source

Boosting the Durability of Triboelectric Nanogenerators: A Critical Review and Prospect

Advanced Functional Materials, Volume 33, Issue 14, April 4, 2023., 2023
The durability of triboelectric nanogenerators (TENGs) is reviewed via both the advanced materials/structure designing and the novel surface/interface engineering, which include choosing basis TENG materials, improving composites performance, optimizing structures and designing triboelectric surfaces and interfaces.
Jun Zhao, Yijun Shi
wiley   +1 more source

Macro-superlubricity in sputtered MoS2-based films by decreasing edge pinning effect

Friction, 2023
To date, MoS2 can only be achieved at microscale. Edge pinning effect caused by structure defects is the most obvious barrier to expand the size of structural superlubricity to macroscale.
Chunmeng Dong, Dong Jiang, Yanlong Fu, Desheng Wang, Qinqin Wang, Lijun Weng, Ming Hu, Xiaoming Gao, Jiayi Sun   +8 more
doaj   +1 more source

The Promise of Solid Lubricants for a Sustainable Future. [PDF]

Adv Mater
Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Grützmacher PG, Voevodin AA, Korényi-Both A, Righi MC, DellaCorte C, Bagcivan N, Erdemir A, Gachot C.   +7 more
europepmc   +2 more sources

Structural lubricity under ambient conditions. [PDF]

, 2016
Despite its fundamental importance, physical mechanisms that govern friction are poorly understood. While a state of ultra-low friction, termed structural lubricity, is expected for any clean, atomically flat interface consisting of two different ...
Baykara, Mehmet Z, Cihan, Ebru, Durgun, Engin, İpek, Semran   +3 more
core   +1 more source

Recent Advances of Graphene and Related Materials in Artificial Intelligence

Advanced Intelligent Systems, Volume 4, Issue 10, October 2022., 2022
Herein this review, the latest research and development of graphene and related materials in artificial intelligence, including machine‐learning techniques and neuromorphic computing devices, are summarized and discussed. Biological brains perform real‐time processing of unstructured data with ultralow energy consumption and represent the most ...
Meirong Huang, Zechen Li, Hongwei Zhu
wiley   +1 more source

Liquid superlubricity of lubricants containing hydroxyl groups and their aqueous solution under rolling/sliding conditions

Friction, 2023
Macroscale rolling/sliding conditions are in the superlubricity, a little-studied topic so far. The purpose of this paper is to examine the formation of elastohydrodynamic lubrication (EHL) films by water-based lubricants (glycerol and polyethylene ...
Tomáš Poláček, Petr Šperka, Ivan Křupka   +2 more
doaj   +1 more source