kinetics – Page 2 – TechConnect Briefs

Polymer Network on Optical Fiber Core

Kazakov S.V., Pace University, US

The ultimate goal of the research is to fabricate a cylindrical polymer network (hydrogel) on the side-surface (not the distal end) of an optical fiber core and characterize spectroscopically its swelling/de-swelling ability in response to [...]

Attachment and Spreading of Human Embryonal Carcinoma Stem Cells on Nanosurfaces Using Optical Waveguides

Aref A., Horvath R., Ansari F., Ramsden J.J., Cranfield University, UK

Abstract Cell adhesion is an active process, carried out in vivo via receptor ligand-like interactions between cell surface adhesion molecules and the extracellular matrix. Initial cell surface reactions following contact may trigger multiple responses, which [...]

Adsorption kinetics of bacteria onto a thin Fe3O4 magnetic nanofilm

Ansari F., Aref A., Libor S., Horvath R., Ramsden J.J., Cranfield University, UK

A range of bacteria have been shown to be able to remove sulfur from organic compounds that commonly exist in petroleum. The most extensively investigated microorganisms belong to the genus Rhodococcus, which has shown reasonably [...]

Protons’ binding within nanometer scaled compartments of natural ionic reservoirs: Bacillus subtilis spores

Kazakov S., Bonvouloir E., Gazaryan I., Pace University, US

Dormant spores of bacteria of Bacillus genus are intriguing micrometer-scaled objects for a physico-chemical study. The most paradoxical feature of dormant spores is that, being metabolically inactive and resistant to environmental insults, they actually monitor [...]

Novel surface architectures for biomimetic lipid membranes

Reimhult E., Merz C., Ye Q., Textor M., Swiss Federal Institute of Technology (ETH Zürich ), CH

Many important biological processes occur at, via or across one of the various lipid membranes present in the cell. These include transport governed by transmembrane proteins constituting more than 50% of all drug targets of [...]

DNA-DNA Interaction on Dendron-Functionalized Sol-Gel Silica Films Followed with Surface Plasmon Fluorescence Spectroscopy

Kwon S.H., Hong B.J., Park H.Y., Park J.W., Knoll W., Park H.Y., Park J.W., Center for Integrated Molecular System., KR

Since we observed that dendron-assembled surface providing a proper spacing between immobilized DNAs showed high single nucleotide polymorphism discrimination efficiency for DNA microarrays(1), the nanoscale-controlled surface is examined with surface plasmon field-enhanced fluorescence spectroscopy (or [...]

A Kinetic Study of the MOCVD of GaN

Moscatelli D., Cavallotti C., Politecnico di Milano, IT

Quantum chemistry investigations have been performed to study the gas phase chemistry active during the MOVPE of GaN when Ga(CH3)3 and NH3, diluted in a H2 carrier gas, are used as precursors. Optimized molecular geometries, [...]

Kinetics in two Phase-Observe Interaction and Identify the Binding Parameters

Yadav V., Pandey A., University Grant Commission, IN

Kinetic and mechanistic studies of some alcohols viz., allyl, crotyl, methyl and ethyl alcohol using quinquevalent vanadium in aqueous and anionic micellar media are discussed. Oxidation follows first order kinetics with respect to [V(V)], [Substrate] [...]

Real Time Kinetic Measurements of Silver Nanocluster Growth

Mercado L., Castro M.E., Castro W., Vicuña E., Briano J.G., Ishikawa Y., Irizarry R., Solá L., Castro M.E., Castro W., University of Puerto Rico, US

Metallic clusters of noble metals are of tremendous technological importance due to their conduction properties, size, low reactivity and optical properties. Clusters containing as few as two and four silver atoms have been prepared in [...]

Growth Kinetics of Gold Nanoparticles

Murillo L.E., Viera O., Vicuña E., Briano J.G., Castro M.E., Ishikawa Y., Irizarry R., Solá L., University of Puerto Rico, US

We have measured the growth kinetics of gold nanoparticles in real time. Gold nanoparticles were formed from the reduction of gold (III) in aqueous solution and monitored with a stopped-flow reactor equipped with a diode [...]