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Nanosphere lithography has potential in many areas, and there have been many methods that deposit the colloidal suspension onto the substrate. However, it is important and still difficult to control the uniformity of the monolayer on a plane substrate. In this study, we have found a method for a uniform monolayer of polystyrene beads by confining the droplets with microwells. By simply controlling...
The self-assembly adsorption of bovine serum albumin (BSA) on the hybrid surface including the discontinuous gold nano film and silica under liquid condition was studied in situ by atomic force microscope (AFM) at room temperature. To investigate the adsorption of BSA on silica and gold nano film simultaneously, the surface with discontinuous gold nano film and visible blank block on silica by physical...
A novel nano Fe3O4-Au modified amperometric immunosensor for rapid separation-free determination of human immunodeficiency virus (HIV) p24 antigen in acquired immunodeficiency syndrome (AEDs) patients' serum is proposed. Firstly, one novel sebacato-bridged Cu(II) phen complex Cu(phen)L2 (referred to as CuL, H2L=sebacic acid; phen=1,10phenanthroline) was absorbed on the surface of glassy carbon electrode...
This paper reports a rapid, simple and direct method for the synthesis of gold nanoparticles (AuNPs) in polypyrrole (PPy) film, which provides a biocompatible matrix for the strong adsorption of antibodies. The electrochemical synthesis of AuNPs/PPy composite on gold or carbon electrode occurs within 20 minutes, and does not involve addition of any nanoparticles or reducing agent. This method is compatible...
The low coverage adsorption of CN- ions on Ag and Au have been studied by means of density functional theory and cluster model. Geometry and adsorption energy of one- and two-coordination associations of cyanide with surface silver and gold atoms have been computed. It was founded on the base of comparison of surface configuration energies that the part of surface gold atoms on which is adsorbed two...
As shown by quartz-crystal microbalance measurements, in the potential range from 0.0 to 0.55 V (NHE) sulfide ions adsorbed on the gold electrode surface accelerate the electrode reaction of anodic dissolution of gold in acidic thiocarbamide solutions. The microbalance determination of kinetic parameters at a constant electrode surface coverage with sulfide ions includes a special procedure developed...
Capacitive humidity sensors were fabricated using countersunk interdigitated electrodes coated with amorphous nanostructured TiO2, SiO2, and Al2O3 thin films grown by glancing angle deposition. The capacitive response and response times for each sensor were measured. The sensor utilizing TiO2 exhibited the largest change in capacitance, increasing exponentially from ~ 1 nF to ~ 1muF for an increase...
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