US Patent 7541623 - ZnO nanorod heterostructure

http://www.freepatentsonline.com/7541623.html

The bandgap of zinc oxide semiconductors makes then useful for LED and laser applications. This patent from Postech Foundation teaches the fabrication of ZnO nanorods to achieve pn junctions for LEDs. Claim 1 reads:

1. A nano-device comprising a p-n hetrojunction structure of a p-type semiconductor thin film and an n-type ZnO-based nanorod epitaxially grown thereon, wherein free space around portions other than tip portions of the ZnO nanorod grown on the semiconductor thin film is filled with an insulating material.

US Patent 7438193 - Coated nanoporous membrane

http://www.freepatentsonline.com/7438193.html

This patent from Postech Foundation (Korea) teaches the formation of a filtration membrane having a high density of nanopores in which an inner portion and a surface portion are formed of different polymers. Claim 1 reads:

1. A nanoporous membrane comprising:

a support; and

a separation layer including a plurality of nano-sized pores at a density of 10^10/cm2 or greater and a matrix wherein said matrix of said separation layer includes an inner portion and a surface portion covering said inner portion.

US Patent 7402736 - Scanning probe with nanotube tip grown from FET

http://www.freepatentsonline.com/7402736.html

Scanning probe microscopes are important tools for molecular and nanoscale characterization. This patent from Postech Foundation of S.Korea teaches a method of fabricating the tip of a scanning probe microscope from a carbon nanotube grown on a field effect transistor for producing a sharper tip with increased measurement speed. Claim 1 reads:

1. A method for fabricating a probe having a field effect transistor channel structure, comprising:

a) fabricating a field effect transistor;

b) forming a seed electrode for growing a carbon nanotube at a top portion of a gate electrode formed on the field effect transistor; and

c) growing the carbon nanotube on the seed electrode.