Materials Characterization & Imaging – Page 54

Lattice Engineered Nanoparticles

Casey P., Rossouw C.J., Murphy A.B., Bell C., Commonwealth Scientific and Research Organisation, AU

Nano-particulate oxides such as ZnO and TiO2 are receiving much attention as functional nanoparticles predominantly due to their increased efficiency in absorbing UV at small particle sizes. However, whilst protection against UV may be maintained [...]

Nanoparticle Formation in Supercritical Fluids – The World’s First Real Time In-situ Investigation

Jensen H., Bremholm M., Nielsen R.P., Joensen K.D., Chen Y-S, Almer J., Søgaard E.G., Iversen B.B., Iversen S.B., Iversen B.B., Iversen S.B., SCF-Technologies, DK

In this study the world’s first real time in-situ simultaneous small angle x-ray scattering (SAXS) and wide angle x-ray scattering (WAXS) characterization of supercritical nanoparticle formation was performed. In previous supercritical studies the reaction is [...]

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 [...]

3D structure of nano-scale materials by total x-ray scattering

Petkov V., Central Michigan University, US

Knowledge about the three-dimensional (3D) structure, including the type and positions of atomic/molecular units in space, is an important prerequisite to understanding, predicting and improving properties of materials. With common materials it is routinely obtained [...]

Quantitative Synchrotron Grazing Incidence X-ray Scattering and Reflectivity Analysis of Nano-structures and Patterns Supported with Substrates

Ree M., Yoon J., Heo K., Jin K.S., Jin S., Jin K.S., Jin S., Lee B., Park I., Park Y.H., Choi S.C., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Oh W., Park I., Park Y.H., Hwang Y., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Kim G., Kim H., Kim J-S, Kim J., Kim K.W., Chang T., Pohang University of Science & Technology, KR

Single-layer, multi-layer, and patterned nanostructures were fabricated with aids of substrates from various material systems (polymers, diblock copolymers, polymer blends, alumina precursors, silane precursor, etc.) using wet spin-coating and subsequent dry and thermal process, chemical [...]

Nanoscale Characterization

Delivery of Shiga Toxin 1 A Subunit into Epithelial Cells Using Silica-Based Nanowires

Kwon N.H., Beaux M., Sheng H., Ebert C., Wang L., McIlroy D.N., Hovde C.J., Bohach G.A., University of Idaho, US

Silica-based nanowires were used to introduce the Shiga toxin 1 A subunit (StxA1) into bovine and human epithelial cells. We extended our previous technology which employs fibronectin (Fn) as a ligand to induce integrin-mediated uptake [...]

Differential Uptake of PEG-Silica-FITC Nanoparticles by Human Breast Cancer Cells and Normal Human Breast Epithelial Cells

Iwakuma N., Sharma P., Delano M.J., Moldawer L.L., Moudgil B.M., Grobmyer S.R., University of Florida, US

Background: An understanding of uptake of nanoparticles (NPs) by human cancer cells and non-cancer cells is important for the development of NPs as novel cancer therapeutic and diagnostic agents. Hypothesis: Uptake of NPs is increased [...]

An Investigation of Cellular Toxicity of Carbon Nanomaterials in African American Breast Cancer Cells

Taylor T., Dean D., Troy R., Leggett-Robinson P.M., Tuskegee University, US

Functionalized CNTs and CNFs are attractive not only because they are theoretically easier to disperse in organic solvents and water, but also because there is some evidence that these modifications may enhance solubility and/or decrease [...]

Nanoprobe for Optical Molecular Imaging

Zheng S., Wang R., Che W., Harrison W.J., Yang Z., Li C., Eastman Kodak Company, US

Optical molecular imaging (OMI) is a very powerful tool for studying the temporal and spatial dynamics of specific biomolecules and their interactions in real time in vivo. It exhibits the great advantages of high temporal [...]