repulsive Archives - About Tribology

Superlubricity by means of repulsive van der Waals forces

06.04.2016 Aydar Akchurin

Superlubricity, a state of low friction (<0.001), can be achieved by different mechanisms. The structural superlubricity occurs, if the crystal lattices of the contacting bodies are incommensurate. Nano-scrolls may act as a bearing and may […]

Programmable Friction: Electrical Regulation of Ionic Liquid Lubrication

23.11.2020

Friction is a force rising between two surfaces when they move in opposite directions or when one moves over a stationary surface. The scale of the movement does not matter: from the movement of continental [...]
Tribology of Cardiac Implants

14.08.2022

Table of Contents IntroductionVentricular Assist Device (VAD)Stents and graftsArtificial heart valvesReferences Introduction According to American Heart Association’s 2017 Heart Disease and Stroke Statistics Update, nearly 801,000 deaths in the US had cardiovascular disease as the [...]
Nanoscale friction on thin films

22.03.2021

In nature ‘entities’, either be living or non-living tend to behave differently at different scales by exhibiting different properties. Which play a major role in the way we frame our perspectives and opinions on them. [...]
An Engineered Salvinia-like Slippery Surface

01.02.2021

The surface properties of materials are often critical because they dictate how they react with their external environment. An important property currently under intense investigation is how surfaces interact with liquids like water. In a [...]
Biodegradable Triboelectric Nanogenerators to Power Implantable Sensors

15.06.2020

Energy harvesting (also sometimes called scavenging) is a process of energy derivation from the ambient sources, e.g., sunlight, wind, heat, mechanical vibrations, etc. The main idea is that devices can collect the energy present in [...]