摘要:
Techniques for making nanowires with a desired diameter are provided. The nanowires can be grown from catalytic nanoparticles, wherein the nanowires can have substantially same diameter as the catalytic nanoparticles. Since the size or the diameter of the catalytic nanoparticles can be controlled in production of the nanoparticles, the diameter of the nanowires can be subsequently controlled as well. The catalytic nanoparticles are melted and provided with a gaseous precursor of the nanowires. When supersaturation of the catalytic nanoparticles with the gaseous precursor is reached, the gaseous precursor starts to solidify and form nanowires. The nanowires are separate from each other and not bind with each other to form a plurality of nanowires having the substantially uniform diameter.
摘要:
A resist medium in which features are lithographically produced by scanning a surface of the medium with an AFM probe positioned in contact therewith. The resist medium comprises a substrate; and a polymer resist layer within which features are produced by mechanical action of the probe. The polymer contains thermally reversible crosslinkages. Also disclosed are methods that generally includes scanning a surface of the polymer resist layer with an AFM probe positioned in contact with the resist layer, wherein heating the probe and a squashing-type mechanical action of the probe produces features in the layer by thermally reversing the crosslinkages.
摘要:
CIGS absorber layers fabricated using coated semiconducting nanoparticles and/or quantum dots are disclosed. Core nanoparticles and/or quantum dots containing one or more elements from group 13 and/or IIIA and/or VIA may be coated with one or more layers containing elements group IB, IIIA or VIA. Using nanoparticles with a defined surface area, a layer thickness could be tuned to give the proper stoichiometric ratio, and/or crystal phase, and/or size, and/or shape. The coated nanoparticles could then be placed in a dispersant for use as an ink, paste, or paint. By appropriate coating of the core nanoparticles, the resulting coated nanoparticles can have the desired elements intermixed within the size scale of the nanoparticie, while the phase can be controlled by tuning the stochiomctiy, and the stoichiometry of the coated nanoparticle may be tuned by controlling the thickness of the coating(s).
摘要:
A method and apparatus for fabricating or altering a microstructure use means for heating to facilitate a local chemical reaction that forms or alters the submicrostructure.
摘要:
A method and apparatus for fabricating or altering a microstructure use means for heating to facilitate a local chemical reaction that forms or alters the submicrostructure.
摘要:
A cooling system comprising a plurality of coolant channels comprising a fluid-impervious surface comprising a base surface, at least one distinct region of the base surface covered by a mixed monolayer, the mixed monolayer comprising a species having a functional group M1 and a species having a functional group M2 where M1 and M2 have different surface energies, the mixed monolayer forming a surface energy gradient within the region and wherein any portions of the surface that border the at least one distinct region have substantially equal surface energies.
摘要:
A method of batch fabrication using established photolithographic techniques allowing nanoparticles or nanodevices to be fabricated and mounted into a macroscopic device in a repeatable, reliable manner suitable for large-scale mass production. Nanoparticles can be grown on macroscopic “modules” which can be easily manipulated and shaped to fit standard mounts in various devices.
摘要:
A novel method of transporting ink to a substrate with dip-pen nanolithographic (DPN) stamp tips coated with polymer (e.g., polydimethylsiloxane (PDMS), etc.). This kind of tip adsorbs chemicals (“inks”) easily and is used to generate DPN nanopatterns that are imaged with the same tip after a DPN process. This method builds a bridge between micro-contact printing (μCP) and DPN, making it possible for one to easily generate smaller structures of any molecules that have been patterned by the μCP technique. The easy tip-coating and writing process enriches the state-of-the-art DPN technique. The sub-100 nm DPN resolution obtained by using this kind of novel tip is comparable to that with a conventional Si3N4 probe tip. Importantly, the unique stamp tip was able to transfer solvent (e.g., liquid “ink”) onto a substrate, resulting in fabrication of hollow nanostructures with only one DPN holding/writing step. Inks comprising metals and sol-gel materials are noted, as well as applications in photomask repair, enhancement, and fabrication.
摘要:
The invention provides a method for forming a patterned material layer on a structure, by condensing a vapor to a solid condensate layer on a surface of the structure and then localized removal of selected regions of the condensate layer by directing a beam of energy at the selected regions. The structure can then be processed, with at least a portion of the patterned solid condensate layer on the structure surface, and then the solid condensate layer removed. Further there can be stimulated localized reaction between the solid condensate layer and the structure by directing a beam of energy at at least one selected region of the condensate layer.
摘要:
Substantially enhanced field emission properties are achieved by using a process of covering a non-adhesive material (for example, paper, foam sheet, or roller) over the surface of the CNTs, pressing the material using a certain force, and removing the material.