size effect – TechConnect Briefs

Quantifying the origin of nanosilver ions and their antibacterial activity

Sotiriou G.A., Meyer A., Knijnenburg J., Panke S., Pratsinis S.E., Particle Technology Laboratory, ETH Zürich, CH

Nanosilver is prominent in nanotechnology products [1]. Concerns however about leached Ag ions from its surface into aquatic environments have challenged its broad use. The origin of these ions is explored here by conditioning the [...]

Role of Hard Segment Induced Nanosized Domain on Dilute Solution Properties of Ether Based Thermoplastic Polyurethanes

Lem K.W., Lee D.S., Haw J.R., Song G.S., Curran S., Sund S., Iqbal Z., Brumlik C., Konkuk University, KR

Many useful polyurethane components, such as films, are prepared from solution, in the form of dispersion, emulsion, or suspension. The ultimate properties of such films depend on the effect of nano scaled structures in the [...]

Role of Hard Segment Induced Nanosized Domain on Concentrated Solutions and Bulk Properties

Lem K.W., Lee D.S., Haw J.R., Song G.S., Curran S., Sund S., Iqbal Z., Brumlik C., Konkuk University, KR

When a film is cast from solution, the volume fraction of polymer in the film increases with increasing drying temperature and/or time. Its viscoelastic behavior transitions from more viscous (where G” > G’) in dilution [...]

Application of nanoindentation for constituent phases testing

Hussainova I., Jasiuk I., Tallinn University of Technology, EE

Development of advanced composites requires a detailed knowledge of their constituents’ properties as they are often somewhat different from the materials at their bulk form. In the present study, the nanoindentation techniques of two different [...]

Micro mixture: Size effect of micro mixing

Khelfaoui R., Benyoucef B., Colin S., ASSISTANT, DZ

A micro system is an optimized combination of elements fulfilling several complementary functions. Micro mixers applied in many fields, effective devices, for the handling of a chemical multitude of reaction, achieved objectives along ten years [...]

Size and Strain Rate Effects in Tensil Deformation of Cu Nanowires

Liang W., Zhou M., Georgia Institute of Technology, US

Nanoscale plasticity has drawn significant attention in recent years. Extensive Experimental and numerical studies have been conducted in this field. In previous molecular dynamics (MD) simulations, the Nose-Hoover isothermal procedure was often used to maintain [...]

Size and Strain Rate Effects in Tensil Deformation of Cu Nanowires

Liang W., Zhou M., Georgia Institute of Technology, US

Nanoscale plasticity has drawn significant attention in recent years. Extensive Experimental and numerical studies have been conducted in this field. In previous molecular dynamics (MD) simulations, the Nose-Hoover isothermal procedure was often used to maintain [...]