friction – TechConnect Briefs

Characterizing the stickiness property of fibrous materials under wet skin surface: Textile Friction Tester

Tang K.P.M., Chau K.H., Kan C-W, Fan J.T., The Hong Kong Polytechnic University, HK

People sweat a lot when staying in hot environment or exercising. The presence of moisture within fabric-skin interface will cause sensorial discomfort. When applying pressure and friction on wet skin surface, it may lead to [...]

Adhesion and friction between supported pH sensitive polymeric nanoparticles monolayers

Giraud L., Giasson S., Universty of Montreal, CA

The unique property of polymers responding to external stimuli has made this class of smart materials very promising for various applications. A particular approach that has been widely used over the past decades is the [...]

A study of the Demolding Force in Nano Imprint Lithography For Different Surface Treatments

Moon S.N., Jung J-M, Lee K.M., Lee W.I., Lee K.M., Lee W.I., Seoul National University, KR

The NIL process can be divided into two steps: the pressing and demolding stages. In the pressing stage, micro/nano scale patterns on a mold are transferred to a polymer resist. During this stage, there are [...]

Correlation of Microstructure and Tribological Properties of Dry Sliding Nanocrystalline Diamond Coatings

Wiora M., Sadrifar N., Brühne K., Gluche P., Fecht H-J., Ulm University, DE

Nanocrystalline diamond (NCD) offers great potential for many micro-mechanical systems, particularly where low friction, reliability and mechanical integrity are of great importance. The reduction of grain size in NCD films to several nanometers is, however, [...]

Fiber Resin Composite Bearings in Wave Energy Converter

Kim M.R., Ankeny A.E., GGB Bearing Technology, US

The Pelamis Wave Energy Converter is an electric power generation system that uses a revolutionary power conversion unit to convert ocean wave energy to electricity. It harnesses the undulating motion of ocean waves by translating [...]

Characterizing Membrane Sorption and Diffusion with Flux Lateral Force Microscopy

Killgore J.P., Overney R.M., University of Washington, US

Bulk permeability measurements provide an incomplete descriptor of permeability when considering heterogeneous or anisotropic membranes. Localized measurements of flux allow for independent assessment of constituent contributions to total permeability. Analogous to a puck on an [...]