silica – Page 3 – TechConnect Briefs

Hypertransparent Nanostructured Superhydrophobic Self-Cleaning Coatings on Glass Substrates

Jiang Y.D., Smalley Y., Paris H., Hunt A.T., nGimat Co., US

Self-cleaning surfaces have wide applications in architectural and automotive windows and solar panels, etc. The development of superhydrophobic surfaces was inspired by observation of lotus and other plant leaves. Many existing hydrophobic coatings either have [...]

Dispersion and incorporation of optical nanotracers

Samuel J., Raccurt O., Poncelet O., Tillement O., Tardif F., Commissariat à l’Energie Atomique, FR

Silica fluorescent nanoparticles of 40nm diameter are synthesized by a reverse microemulsion process. Numerous industrial applications involve the homogeneous incorporation of nanoparticles into a polymer matrix. Nevertheless, because of their low size, nanoparticles tend to [...]

Effect of Surface Hydration and Interfusion of Suspended Silica Nanoparticles on Heat Transfer

Milanova D., Wu X., Kumar R., University of Central Florida, US

Nanofluid suspensions enhance thermal conductivity and the heat transfer. The authors have previously shown that the Critical Heat Flux (CHF) of NiChrome wire in a silica nanofluid can be increased by 200% compared to conventional [...]

Cytotoxicity of Dental Nanocomposite Particles

Kostoryz E.L., Utter C.J., Wang Y., Dusevich V., Spencer P., University of Missouri-Kansas City, US

Safety assessment of dental composites is focused on the toxicity of leachable unreacted monomers. With the advent of nanostructured materials, safety assessment needs to include the potential toxicity of nanoparticles. The objective of this study [...]

Innovative PMMA/Silica nanocomposites for optical and biomedical applications

Avella M., De Petrocellis L., Di Pace E., Errico M.E., Gentile G., Orlando P., ICTP-CNR, IT

The main goal of this research is the preparation of new PMMA/Silica nanocomposites with improved mechanical properties and highly specific bio-activity. PMMA based nanocomposites reinforced with modified silica nanoparticles have been prepared and characterized. Transparency [...]

Effect of Surface Hydration and Interfusion of Suspended Silica Nanoparticles on Heat Transfer

Milanova D., Wu X., Kumar R., University of Central Florida, US

Nanofluid suspensions enhance thermal conductivity and the heat transfer. The authors have previously shown that the Critical Heat Flux (CHF) of NiChrome wire in a silica nanofluid can be increased by 200% compared to conventional [...]

Nanoparticles in chemistry and their industrial applications

Maestro P., Bomal Y., Chopin T., RHODIA RECHERCHES ET TECHNOLOGIES, FR

Micro- and nanotechnologies are at the centre of numerous investigations and huge investments, essentially in the areas of information technologies and health care . The technologies utilised mainly take advantage of microelectronics and/or rather sophisticated [...]

Aligned Electrospun Nanocomposite Fibers

Nartker S.R., Misra M., Drzal L.T., Research Assistant, US

Electrospun fibers have been used in various applications including filtration media, biomedical, ceramics and composites. Electrospinning uses an electric field to draw a polymer solution jet from the tip of a capillary to a collector [...]

Mesoporous Silica for Desorption-Ionization Mass Spectrometry

Dattelbaum A., Iyer S., Los Alamos National Laboratory, US

Here we demonstrate the use of mesoporous silica thin films for matrix free laser desorption/ionization mass spectrometry (MS). In spite of the growing acceptance of matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry for biomolecular analysis, [...]