Results 31 to 40 of about 18,338 (155)

Achieving macroscale superlubricity with ultra-short running-in period by using polyethylene glycol-tannic acid complex green lubricant

Friction, 2023
Superlubricating materials can greatly reduce the energy consumed and economic losses by unnecessary friction. However, a long pre-running-in period is indispensable for achieving superlubricity; this leads to severe wear on the surface of friction pairs
Changhe Du, Tongtong Yu, Zishuai Wu, Liqiang Zhang, Ruilin Shen, Xiaojuan Li, Min Feng, Yange Feng, Daoai Wang   +8 more
doaj   +1 more source

Macroscale superlubricity enabled by graphene nanoscroll formation [PDF]

Science, 2015
Slip sliding away Many applications would benefit from ultralow friction conditions to minimize wear on the moving parts such as in hard drives or engines. On the very small scale, ultralow friction has been observed with graphite as a lubricant. Berman et al.
Diana Berman, Sanket A. Deshmukh, Subramanian K. R. S. Sankaranarayanan, Ali Erdemir, Anirudha V. Sumant   +4 more
openaire   +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

Macroscale superlubricity achieved between zwitterionic copolymer hydrogel and sapphire in water

Materials & Design, 2020
Achievement of macroscale superlubricity from the hydration effect could provide a potential application for artificial articular cartilage. In this work, two zwitterionic polymers, 2-methacryloyloxyethyl phosphorylcholine (MPC) and sulfobetaine ...
Zhongnan Wang, Jinjin Li, Yuhong Liu, Jianbin Luo   +3 more
doaj   +1 more source

A Theoretical Study on Friction of Macroscale Patterned Surfaces: Implications for Scaling Up Superlubricity. [PDF]

ACS Appl Mater Interfaces
"Structural superlubricity", a state of frictionless sliding between crystalline surfaces, has been observed at the nanoscale and microscale. However, achieving it at the macroscale requires further investigation. Inspired by recent experimental studies, we theoretically examine the friction behavior of macroscale patterned surfaces composed of ...
Ho VH, Gianetti MM, Uluca A, Sinnott AD, Haugen B, Cross GLW, de Wijn AS.   +6 more
europepmc   +4 more sources

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

Superlubricity achieved with two-dimensional nano-additives to liquid lubricants

Friction, 2020
The topic of superlubricity is attracting considerable interest around the world while humanity is facing an energy crisis. Since various liquid superlubricity systems can be commonly achieved on the macroscale in ambient conditions, it is considered an ...
Hongdong Wang, Yuhong Liu
doaj   +1 more source

Operando Formation of Van der Waals Heterostructures for Achieving Macroscale Superlubricity on Engineering Rough and Worn Surfaces

, 2022
Macroscale superlubricity breakdown of lubricating materials caused by substrate surface roughening and mechanochemical modification poses great challenges for their practical tribological applications.
Jiangong Li, Zhang, Junyan, Yang, Xing, Xing Yang, Junyan Zhang, Yue, Chengtao, Meyer, Ernst,, Li, Ruiyun, Meyer, Ernst, Zhao, Jun, Zhao, Jun,, Yue, Chengtao,, Li, Jiangong,, Li, Ruiyun,, Wang, Yongfu, Zhang, Junyan,, Yang, Xing,, Shi, Yijun,, Jun Zhao, Yongfu Wang, Ruiyun Li, Ernst Meyer, Chengtao Yue, Wang, Yongfu,, Shi, Yijun, Yijun Shi, Li, Jiangong   +26 more
core   +1 more source

Observation of Robust Macroscale Structural Superlubricity

Physical Review Letters
Structural superlubricity (SSL) promises nearly frictionless and wearless sliding but has until now been considered a special and extreme interfacial phenomenon limited to micro- and nanoscale contacts. Here, we demonstrate robust macroscale SSL within a single submillimeter graphite contact.
Minhao Han, Deli Peng, Dinglin Yang, Jin Wang, Yi Zheng, Guofeng Hu, Yifan Shao, Jiaying Li, Feng Ding, Zhiping Xu, Michael Urbakh, Quanshui Zheng   +11 more
openaire   +4 more sources