摘要:
Methods, materials and apparatus are described for synthesizing a monolayer or few-layers of graphene. Depositing the graphene can include, in some implementations, flowing hydrogen and carbon feedstock over a catalytic layer formed on a substrate.
摘要:
Among others, techniques are described for forming nanotubes. In one aspect, a method includes forming a base layer of a transition metal on a substrate. The method also includes heating the substrate with the base layer in a mixture of gases to grow nanotubes on the base layer.
摘要:
Methods, materials, systems and apparatus are described for depositing a separated nanotube networks, and fabricating, separated nanotube thin-film transistors and N-type separated nanotube thin-film transistors. In one aspect, a method of depositing a wafer-scale separated nanotube networks includes providing a substrate with a dielectric layer. The method includes cleaning a surface of the wafer substrate to cause the surface to become hydrophilic. The cleaned surface of the wafer substrate is functionalized by applying a solution that includes linker molecules terminated with amine groups. High density, uniform separated nanotubes are assembled over the functionalized surface by applying to the functionalized surface a separated nanotube solution that includes semiconducting nanotubes.
摘要:
Among others, techniques are described for forming nanotubes. In one aspect, a method includes forming a base layer of a transition metal on a substrate. The method also includes heating the substrate with the base layer in a mixture of gases to grow nanotubes on the base layer.
摘要:
A method for growing a graphene layer on a metal foil includes placing a vessel into a chemical vapor deposition chamber, the vessel having a metal foil positioned therein. The method includes evacuating the chemical vapor deposition chamber, introducing hydrogen gas into the chamber to achieve a first pressure less than atmospheric pressure, heating the atmosphere in the chamber to anneal the metal foil, introducing methane and hydrogen into the chamber to achieve a second pressure less than atmospheric pressure.
摘要:
A method for growing a graphene layer on a metal foil includes placing a vessel into a chemical vapor deposition chamber, the vessel having a metal foil positioned therein. The method includes evacuating the chemical vapor deposition chamber, introducing hydrogen gas into the chamber to achieve a first pressure less than atmospheric pressure, heating the atmosphere in the chamber to anneal the metal foil, introducing methane and hydrogen into the chamber to achieve a second pressure less than atmospheric pressure.
摘要:
An electrode includes a first free-standing carbon network, an active material deposited above the first free-standing carbon network, and a second free-standing carbon network covering the active material. The first and second carbon networks are a binder, a conductive additive and a current collector to the electrode.
摘要:
Methods and devices for transparent electronics are disclosed. According to an embodiment, transparent electronics are provided based on transfer printed carbon nanotubes that can be disposed on both rigid and flexible substrates. Methods are provided to enable highly aligned single-walled carbon nanotubes (SWNTs) to be used in transparent electronics for achieving high carrier mobility while using low-temperature processing. According to one method, highly aligned nanotubes can be grown on a first substrate. Then, the aligned nanotubes can be transferred to a rigid or flexible substrate having pre-patterned gate electrodes. Source and drain electrodes can be formed on the transferred nanotubes. The subject devices can be integrated to provide logic gates and analog circuitry for a variety of applications.
摘要:
The present invention relates to various methods of detecting DNA methylation and defected DNA. In one embodiment, the invention provides a nanosensor bound to a probe that is complementary to a DNA methylation sequence.
摘要:
The present invention relates to various methods of sensitizing and modifying nanosensor platforms. In one embodiment, the present invention provides a method of increasing sensitivity by inhibiting oxidation of one or more 1,4-hydroquinone (HQ) molecules, functionalizing the nanosensor by using one or more diazonium molecules, creating one or more oxidized carbon groups on the nanosensor, and/or depositing one or more metal clusters on the nanosensor.