Biofunctionalization of zinc oxide nanowires for DNA sensory applications

Biofunctionalization of zinc oxide nanowires for DNA sensory applications

We report on the biofunctionalization of zinc oxide nanowires for the attachment of DNA target molecules on the nanowire surface. With the organosilane glycidyloxypropyltrimethoxysilane acting as a bifunctional linker, amino-modified capture molecule oligonucleotides have been immobilized on the nanowire surface. The dye-marked DNA molecules were detected via fluorescence microscopy, and our re...

Zinc oxide and gallium doped zinc oxide nanowires for optoelectronics

Zinc oxide (ZnO) nanostructures are become an important matter of study since they can be used in nanoscale optoelectronics for applications such as memory storage, logic circuits, solid-state gas-, bioor light-sensors, solar cells, field effect transistors, field effect displays, and short wavelength light emitting diodes. ZnO is a semiconductor with a direct and wide band-gap around 3.4 eV, a...

Bicrystalline zinc oxide nanowires

Bicrystalline ZnO nanowires synthesized are composed of two crystals that form a twin structure parallel to the (0 1 1 4) plane with a growth direction closely parallel to [0 1 1 1] and the (2 1 1 0) side facet. The twin structure is suggested to be a key factor in leading the axial growth of the nanowire. The photoluminescence spectra of the nanowires show a weak UV emission at 385 nm and a st...

Synthesis and Characterization of Nanowires Zinc Oxide with Different Temperatures

Solution-grown zinc oxide nanowires.

We review two strategies for growing ZnO nanowires from zinc salts in aqueous and organic solvents. Wire arrays with diameters in the nanoscale regime can be grown in an aqueous solution of zinc nitrate and hexamethylenetetramine. With the addition of poly(ethylenimine), the lengths of the wires have been increased to 25 mum with aspect ratios over 125. Additionally, these arrays were made vert...