Papers – Page 80 – TechConnect Briefs

Preparation of Copper-Bearing Nanofluids for Thermal Applications

Velasco A.F., Perales-Perez O.J., Gutiérrez G., University of Puerto Rico, PR

Stable suspension of nanometer solid particles in suitable solvents, so-called nanofluids, has shown enhanced thermal conductivity when compared with the fluid base. This feature enables these suspensions to be considered a promising material for efficient [...]

Surface Nanostructuration: from coatings to MEMS fabrication

Pugin R., Blondiaux N., Popa A.M., Klein M., Montagne F., Scolan E., Hoogerwerf A., Overstolz T., Liley M., Giazzon M., Weder G., Heinzelmann H., Centre Suisse d’Electronique et de microtechnique, CH

The fabrication of surfaces and films with controlled nanometer features is currently an active area of research. The design of complex nanoarchitectures with novel physical properties has potential applications in many existing and emerging fields [...]

Modeling evaporation and ring-shaped particle deposition of a colloidal microdroplet, with applications in biological assays

Bhardwaj R., Attinger D., Columbia University, US

Colloidal drops evaporating on a solid substrate can be used as vehicles for dispensing or organizing small particles suspended within them. The pattern left after evaporation can be a ring-like structure such as the dried [...]

Biofunctional core-shell nanoparticle deposition for biochip creation by printing processes

Borchers K., Weber A., Genov S., Wirth I., Grzesiak A., Tovar G.E.M., Fraunhofer Institute for Interfacial Engineering and Biotechnology, DE

Nanoparticles display a very large surface-area. Therefore, coatings of functional nanoparticles adsorbed to a solid substrate yield an enlarged interface per footprint-area which is highly appreciated for probe-immobilization in bio-chip technology [1,2]. Silica nanospheres, equipped [...]

Solubilization of Capsaicin and Its Nanoemulsion Formation in the Sonication and Self-Assembly Processes

Choi A.J., Kim C.J., Kim C.T., Cho Y-J, Choi A.J., Hwang J.K., Kim C.J., Kim C.T., Korea Food Research Institute, KR

Currently, interests in food nanotechnology and its research and development are at an initial stage in the world, and food industry is slowly moving to embrace it and preparing for establishment of a final goal [...]

Organic versus Hybrid Coacervate Complexes: Co-Assembly and Adsorption Properties

Fresnais J., Berret J.-F., Qi L., Chapel J.-P., Castaing J.-C., Laboratoire Matière et Systèmes Complexes, FR

We report the co-assembly and adsorption properties of coacervate complexes made from polyelectrolyte-neutral block copolymers and oppositely charged nanocolloids.

Generalized model for the aggregation rate of colloidal nanoparticles and clusters induced by shear in the presence of repulsive interactions

Lattuada M., Morbidelli M., ETH Zürich, CH

Coagulation of colloidal nanoparticles in the presence of shear is a key step in processing of many particulate materials, polymeric nanoparticles, food products etc. In the case of charged nanoparticles, coagulation is usually carried out [...]

Adsorption of Colloid Gold Nanoparticles on Charged Surface

Tzeng S-D, Luo C-S, Gwo S., Lin K.-J., National Chung Hsing University, TW

Colloid gold nanoparticles have many important applications, such as bio-molecular sensors and electronic devices. To fabricate the devices, one of the most significant processes is to assemble the gold nanoparticles on surface. In this work, [...]

Förster transfer in coupled colloidal type-II and type-I quantum dots

Mourokh L.G., Kuskovsky I.L., Smirnov A.Yu., Matsui H., Queens College, CUNY, US

We examine theoretically resonant non-radiative exciton (Förster) transfer in the system of colloidal core-shell quantum dots (QDs) of different types. In this, the type-II QDs with electrons and holes separated in the real space have [...]

Functionalization of multiwalled carbon nanotubes with _-lactalbumin and _-lactoglobulin

Zhou J., Yang Q., Pan X., Gunasekaran S., University of Wisconsin-Madison, US

The immobilization of proteins on carbon nanotubes is attracting much attention because the resultant hybrid nanomaterials are potentially useful as biomolecular nanosensors [1]. -lactalbumin and -lactoglobulin are the major proteins in whey, the by-products of [...]