16 research outputs found
Formation of Nanoclusters and Nanopillars in Nonequilibrium Surface Growth for Catalysis Applications: Growth by Diffusional Transport of Matter in Solution Synthesis
Growth of nanoclusters and nanopillars is considered in a model of surface
deposition of building blocks (atoms) diffusionally transported from solution
to the forming surface structure. Processes of surface restructuring are also
accounted for in the model, which then yields morphologies of interest in
catalysis applications. Kinetic Monte Carlo numerical approach is utilized to
explore the emergence of FCC-symmetry surface features in Pt-type metal
nanostructures. Available results exemplify evaluation of the fraction of the
resulting active sites with desirable properties for catalysis, such as
(111)-like coordination, as well as suggest optimal growth regimes
Extended Linear Response for Bioanalytical Applications Using Multiple Enzymes
We develop a framework for optimizing a novel approach
to extending
the linear range of bioanalytical systems and biosensors by utilizing
two enzymes with different kinetic responses to the input chemical
as their substrate. Data for the flow injection amperometric system
devised for detection of lysine based on the function of l-lysine-alpha-oxidase and lysine-2-monooxygenase are analyzed. Lysine
is a homotropic substrate for the latter enzyme. We elucidate the
mechanism for extending the linear response range and develop optimization
techniques for future applications of such systems