Catalytic growth of hexagonally aligned ZnO nanorods

Abstract

Aligned ZnO nanorods were prepared using colloid-based selfassembling techniques to structure the gold catalyst. Two different processes were used and are compared. The ZnO nanorods were grown with diameters between 200 and 500 nm and adjustable length by a chemical vapor deposition process in a horizontal tube furnace. They show high crystalline quality as confirmed by photoluminescence and spatially and spectrally resolved cathodoluminescence measurements. Hexagonal ordering of the nanorods has been achieved for areas of several square millimeters.

Optical gas sensing by micro-photoluminescence on multiple and single ZnO nanowires

“…First, a metal free ZnO seed layer was grown (to avoid metal catalysts) followed by high temperature nanowire and layer growth. Details about the growth of the ZnO seed layer, the nanowires, and the layers can be found elsewhere .…”

Thermal Modification of Nanoscale Mask Openings in Polystyrene Sphere Layers

“…Nanosphere lithography provides an inexpensive and simple patterning method, which allows for good size and shape control of nanoparticles deposited through hexagonally close packed colloidal sphere mono-and bilayers on substrate surfaces, and which can be scaled up to areas in the square centimeter range [4][5][6][7]. Such metal or semiconductor nanoparticle arrays have potential applications in the fields of plasmonics [8,9], catalytic nanowire growth [10,11] and optoelectronics. In order to modify the size and shape of the mask interstices and thus to extend the range of accessible nanopatterns microwave heating [12], ion irradiation [13] and plasma treatment [14] were employed.…”