nanoparticle – Page 17 – TechConnect Briefs

A modified plasma arc gas condensation technique for the synthesis of tungsten oxide-based materials with various morphologies and structures

Su C.Y., LIn H.C., Yang Z.K., Lin C.K., National Taipei University of Technology, TW

Various nanoproducts including nanoparticles, nanorods, and nanowires have been prepared by a modified plasma arc gas condensation technique. By changing some parameters during the experiment, different kinds of products could be obtained. The results reveal [...]

A Novel Detection of Early Colorectal Cancer by Chitosan Nanoparticles Conjugated with Folic Acid

Yang S.J., Lin F.H., Tsai K-C, Shieh M.J., Institute of Biomedical Engineering, National Taiwan University, TW

The 5-Aminolevulinic acid (5-ALA) can be converted into protoporphyrin IX (PpIX) that can be utilized as a fluorescent probe for tumor detection. In this study, folic acid was conjugated on chitosan molecules via covalent bond [...]

Measuring Nanoparticle Size Distributions in Real-Time: Key Factors for Accuracy

Erickson K., Singh M., Osmondson B., TSI Incorporated, US

The benefits of sizing aerosolized submicrometer particles using an electrical mobility sizing technique have been well documented. This type of analytical tool has been found to be able to measure particle diameter with an uncertainty [...]

Determination of micro-structural properties with x-ray absorption fine structure

Han S.-W., Park S.H., Yu H.-J., Jeong E.-S., Kim S-H, Kim Y.J., Kim S-H, Kim Y.J., Yi G.-C., Chonbuk National University, KR

We studied the structural properties of ZnO nanostructures with x-ray absorption fine structure (XAFS) to understand the growth mechanism of vertically aligned ZnO nanorods of the average diameter of 50 - 150 nm. The orientation-dependent [...]

Nanomedicine: Engineering of a Tri-Imageable Nanoparticle

Bumb A., Brechbiel M.W., Choyke P., Fugger L., Dobson P.J., National Cancer Instiute and University of Oxford, UK

We have created a potential targeted drug delivery platform with three imaging reporters by coupling the magnetic properties of USPIOs with near infrared fluorescence of Cy5.5 and gamma emissions of Indium-111 that is chelated to [...]

Nanodiamonds for Detoxification

Gibson N., Fitzgerald Z., Luo T.-J., Shenderova O., Grichko V., Bondar V., Puzur A., Brenner D., North Carolina State University, US

Our research deals with using nanodiamond particles as an enterosorbent to remove mycotoxins from the gastrointestinal tract. We are working on developing an ideal enterosorbent by obtaining appropriate size nanoparticles, modify nanodiamond surface groups, and [...]

Protein binding to particle surfaces determines intracellular interaction and uptake kinetics

Ehrenberg M., McGrath J.L., University of Rochester, US

People are exposed to nanoparticles in from varying sources and in many ways. The goal of our research is to simplify this diverse problem by establishing a systematic understanding of the properties of particles that [...]

Nanoplex(TM) Biotags: Near-IR Excited, Highly Multiplexed Nanoparticulate Optical Detection Tags for Diagnostic Assays

Penn S., Cromer R., Sha M., Doering B., Brown B., Norton S., Walton I., Oxonica Inc, US

Oxonica Inc has developed a novel optical detection tag for use in point of care diagnostics, cellular imaging assays, and life science assays. Nanoplex(TM) Biotags are silica coated Au nanoparticles that, by virtue of surface [...]

Galactosidase Gene Expression in Yeast Cells Enhanced by Nanoparticles

Chien S-F, Chen S-H, Lin C-T, Northern Illinois University, US

We report the enhancement of gene expression for rice -galactosidase gene (-Gal) in yeast cells assisted by metal nanomaterials. Au and Ag nanoparticles, and their nanocomposites, silica@Au and silica@Ag were prepared and characterized by UV-vis [...]

Self –assembled Nanoparticles of Dextrin Substituted with Hexadecanethiol

Gonçalves C., Martins J.A., Gama F.M., Universidade do Minho, PT

Amphiphilic molecules, such as surfactants or lipids, spontaneously self-assemble in water, forming self-aggregates, such as micelles, bilayer membranes, tubes and vesicles. Amphiphilicity of biopolymers is one of the most important factors for their self-organization in [...]