Publications related to Lubricant

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Pseudomonas aeruginosa orchestrates twitching motility by sequential control of type IV pili movements

Alexandre Louis André Persat, Lorenzo Anton-Louis Talà

Prokaryotes have the ability to walk on surfaces using type IV pili (TFP), a motility mechanism known as twitching(1,2). Molecular motors drive TFP extension and retraction, but whether and how these movements are coordinated is unknown(3). Here, we reveal ...

NATURE PUBLISHING GROUP2019

Miniaturized tube fixed plug drawing: determination of the friction coefficients and drawing limit of 316 LVM stainless steel

Jean-Marie Drezet, Stefano Mischler, Nicolas Paul Henry Chobaut, Bastien De Marco, Vance Nguyen, Stéphane Dobler

Tube drawing with a ﬁxed plug is investigated experimentally and numerically in order to optimise an industrial pass sequence. Tube drawings are performed on a laboratory drawing bench equipped with force, displacement and temperature sensors. The drawing ...

2018

Viscous growth and rebound of a bubble near a rigid surface

François Gallaire, Giacomo Gallino

Motivated by the dynamics of microbubbles near catalytic surfaces in bubble-powered microrockets, we consider theoretically the growth of a free spherical bubble near a flat no-slip surface in a Stokes flow. The flow at the bubble surface is characterised ...

CAMBRIDGE UNIV PRESS2018

Structure and functionality of polyelectrolyte brushes, a surface force perspective

Harm-Anton Klok, Xingyu Xu, Mark Billing, Jing Yu

The unique functionalities of polyelectrolyte brushes depend on several types of specific interactions, including solvent structure effects, hydrophobic forces, electrostatic interactions, and specific ion interactions. Subtle variations in the solution en ...

2018

Effect of fluid viscosity on fault frictional behaviour

Marie Estelle Solange Violay, Chiara Cornelio

Understanding fluids viscosity effects on fault dynamics can shed light on the induced seismicity in engineering reservoirs where fluids with viscosity ranking from 1mPa s-1 to 1000 mPa s-1 are also injected during hydraulic fracturing process in order to ...

2017

Effect of fluid viscosity on fault frictional behavior

Marie Estelle Solange Violay, Chiara Cornelio

Tectonic faults are often lubricated by viscous fluids which can have different natures e.g. gas, water, brine, melt and viscosities varying over 7 order of magnitude (from 10-4 for water to 103 Pa s-1 for a melt at high temperature). Moreover, understandi ...

2017

Tribology of surface-grafted polymer brushes

Harm-Anton Klok, Piotr Mocny

Surface-grafted polymer brushes are a very attractive class of boundary lubricants. This article presents an overview of the tribological properties of surface-attached synthetic polymers. After a brief review of some mechanistic considerations and a discu ...

Royal Soc Chemistry2016