摘要:
Methods for selectively placing carbon nanotubes on a substrate surface by using functionalized carbon nanotubes having an organic compound that is covalently bonded to such carbon nanotubes. The organic compound comprises at least two functional groups, the first of which is capable of forming covalent bonds with carbon nanotubes, and the second of which is capable of selectively bonding metal oxides. Such functionalized carbon nanotubes are contacted with a substrate surface that has at least one portion containing a metal oxide. The second functional group of the organic compound selectively bonds to the metal oxide, so as to selectively place the functionalized carbon nanotubes on the at least one portion of the substrate surface that comprises the metal oxide.
摘要:
Accordingly, the present invention provides a method of forming an electrode having reduced corrosion and water decomposition on a surface thereof. A substrate which has a conductive layer disposed thereon is provided and the conductive layer has an oxide layer with an exposed surface. The exposed surface of the oxide layer contacts a solution of an organic surface active compound in an organic solvent to form a protective layer of the organic surface active compound over the oxide layer. The protective layer has a thickness of from about 0.5 nm to about 5 nm and ranges therebetween depending on a chemical structure of the surface active compound.
摘要:
Transparent conducting electrodes include a doped single walled carbon nanotube film and methods for forming the doped single walled carbon nanotube (SWCNT) by solution processing. The method generally includes depositing single walled carbon nanotubes dispersed in a solvent and a surfactant onto a substrate to form a single walled carbon nanotube film thereon; removing all of the surfactant from the carbon nanotube film; and exposing the single walled carbon nanotube film to a single electron oxidant in a solution such that one electron is transferred from the single walled carbon nanotubes to each molecule of the single electron oxidant.
摘要:
Techniques for ultra-sensitive detection are provided. In one aspect, a detection device is provided. The detection device comprises a source; a drain; a nanowire comprising a semiconductor material having a first end clamped to the source and a second end clamped to the drain and suspended freely therebetween; and a gate in close proximity to the nanowire.
摘要:
A process of doping a silicon layer with dopant atoms generally includes reacting a vapor of a dopant precursor with oxide and/or hydroxide reactive sites present on the silicon layer to form a self assembled monolayer of dopant precursor; hydrolyzing the self assembled monolayer of the dopant precursor with water vapor to form pendant hydroxyl groups on the dopant precursor; capping the self assembled monolayer with an oxide layer; and annealing the silicon layer at a temperature effective to diffuse dopant atoms from the dopant precursor into the silicon layer. Additional monolayers can be formed in a similar manner, thereby providing controlled layer-by-layer vapor phase deposition of the dopant precursor compounds for controlled doping of silicon.
摘要:
A method of forming a polymeric material with a pendant polycyclic aromatic compound precursor includes forming a polycyclic aromatic compound precursor (e.g., a pentacene precursor) including at least one polymerizable functionality, and polymerizing the polymerizable functionality to form the polymeric material with the pendant precursor.
摘要:
Techniques for ultra-sensitive detection are provided. In one aspect, a detection device is provided. The detection device comprises a source; a drain; a nanowire comprising a semiconductor material having a first end clamped to the source and a second end clamped to the drain and suspended freely therebetween; and a gate in close proximity to the nanowire.
摘要:
A method of placing a functionalized semiconducting nanostructure, includes functionalizing a semiconducting nanostructure including one of a nanowire and a nanocrystal, with an organic functionality including a functional group for bonding to a bonding surface, dispersing the functionalized semiconducting nanostructure in a solvent to form a dispersion, and depositing the dispersion onto the bonding surface.
摘要:
A porous composite material useful in semiconductor device manufacturing, in which the diameter (or characteristic dimension) of the pores and the pore size distribution (PSD) is controlled in a nanoscale manner and which exhibits improved cohesive strength (or equivalently, improved fracture toughness or reduced brittleness), and increased resistance to water degradation of properties such as stress-corrosion cracking, Cu ingress, and other critical properties is provided. The porous composite material is fabricating utilizing at least one bifunctional organic porogen as a precursor compound.
摘要:
The present invention provides a method for selectively placing carbon nanotubes on a substrate surface by using functionalized carbon nanotubes having an organic compound that is covalently bonded to such carbon nanotubes. The organic compound comprises at least two functional groups, the first of which is capable of forming covalent bonds with carbon nanotubes, and the second of which is capable of selectively bonding metal oxides. Such functionalized carbon nanotubes are contacted with a substrate surface that has at least one portion containing a metal oxide. The second functional group of the organic compound selectively bonds to the metal oxide, so as to selectively place the functionalized carbon nanotubes on the at least one portion of the substrate surface that comprises the metal oxide.