Poly(N-isopropyl acrylamide) (PNIPAM) is a stimulus-responsive polymer that can switch in water from an expanded state below the lower critical solution temperature (LCST) of 32 °C to a globular state above the LCST. It was recently shown that, as a consequence of this conformational transition, the interfacial and (tribo-)mechanical properties of polymeric systems composed of PNIPAM can be swi...

• Multi-layer MXenes were used as solid lubricants coatings for rolling bearings. Comparison with molybdenum disulfide (MoS 2 ) and diamond-like carbon (DLC) coatings. Bearing washer wear was substantially reduced by MXene Transfer film formation verified on secondary contacts (rolling elements/cage pockets). Service life extension 30 55% compared to MoS DLC, respectively. Two-dimensional (2D) ...

Minimizing energy loss and improving system load capacity and compactness are important objectives for fluid power systems. Recent studies reveal that micro-textured surfaces can reduce friction in full-film lubrication, and that asymmetric textures can reduce friction and increase normal force simultaneously. As an extension of these previous discoveries, we explore how enhanced texture design...

A novel quantitative nano+micro-tribometer with integrated SPM and optical microscope imaging has been developed to characterize numerous physical and mechanical properties of liquid and solid thin films and coatings, with in-situ monitoring their changes during micro and nano indentation, scratching, reciprocating, rotating and other tribology tests. Both the materials properties and surface t...

Abstract. Recent advances in statistical and machine learning have opened the possibility of forecasting behaviour chaotic systems using recurrent neural networks. In this article we investigate applicability such a framework to geophysical flows, known involve multiple scales length, time energy feature intermittency. We show that both multiscale dynamics intermittency introduce severe limitat...

In this paper, the probabilistic version of intuitionistic fuzzy decision making methods is introduced to show duality present within distance. Here, two types methods, namely, TOPSIS (PI-TOPSIS) algorithm and face identification (PIFI) are proposed. The PI-TOPSIS utilizing distance as separation measure; for its justification rankings reduced information loss multi criteria problems compared. ...