摘要:
A method is provided to enable the formation of sub-lithographic relief images to increase the surface area of semiconductor structures for use in the capacitors of DRAM cells. The method includes the steps of forming in situ a non-planar region (12) having a relief pattern (14) comprising sub-micron sized elements and the transferring the relief pattern (14) into a masking layer (16) in order to selectively etch a substrate (10) to form relatively deep trenches (20) having a density equal to the relief pattern (14). Polysilicon and porous silicon can be used to form the sub-micron relief pattern.
摘要:
To provide nanotweezers and a nanomanipulator which allow great miniaturization of the component and are capable of gripping various types of nano-substances such as insulators, semiconductors and conductors and of gripping nano-substances of various shapes. Electrostatic nanotweezers 2 are characterized in that the nanotweezers 2 are comprised of a plurality of nanotubes whose base end portions are fastened to a holder 6 so that the nanotubes protrude from the holder 6, coating films which insulate and cover the surfaces of the nanotubes, and lead wires 10, 10 which are connected to two of the nanotubes 8, 9; and the tip ends of the two nanotubes are freely opened and closed by means of an electrostatic attractive force generated by applying a voltage across these lead wires. Furthermore, by way of forming a piezo-electric film 32 on the surface of the nanotube 9, and the tip ends of the nanotubes are freely opened and closed by expanding and contracting the piezo-electric film, thus allowing any desired nano-substances to be handled regardless of whether the nano-substances are insulators, semiconductors or conductors. Furthermore, if by way of designing three nanotubes so as to be freely opened and closed by an electrostatic system, nano-substances of various shapes such as spherical, rod-form, etc.
摘要:
A floating gate (156) for a field effect transistor (150) (and method for forming the same and method of forming a uniform nanoparticle array), includes a plurality of discrete nanoparticles (156) in which at least one of a size, spacing, and density of the nanoparticles is one of templated and defined by a self-assembled material.
摘要:
Provided is a carbon nanostructure-metal composite nanoporous film in which a carbon nanostructure-metal composite is coated on one surface or both surfaces of a membrane support having micro- or nano-sized pores. A method for manufacturing a carbon nanostructure-metal composite nanoporous film, includes: dispersing a carbon nanostructure-metal composite in a solvent at the presence of a surfactant and coating the carbon nanostructure-metal composite on one surface or both surfaces of a membrane support; and fusing the metal on the membrane support by heating the coated membrane support. The metal in carbon nanostructure-metal composite nanoporous film melts at a low temperature since a size of a metal of the carbon nanostructure-metal composite is several nm to several-hundred nm.
摘要:
Disclosed herein is a method of manufacturing silicon nanowires, which is characterized in that silicon nanowires are formed and grown through a solid-liquid-solid process or a vapor-liquid-solid process using a porous glass template having nanopores doped with erbium or an erbium precursor. In addition, a device including silicon nanowires formed using the method is provided. The silicon nanowires manufactured according to this invention can be effectively applied to various devices, for example, electronic devices such as field effect transistors, sensors, photodetectors, light emitting diodes, laser diodes, etc.
摘要:
A method of making a semiconductor device includes a substrate (12) having a semiconductor layer (12) having a first portion (16) for non-volatile memory and a second portion (18) exclusive of the first portion (16). A first dielectric layer (14) is formed on the semiconductor layer. A plasma nitridation is performed on the first dielectric layer. A first plurality of nanoclusters (20) is formed over the first portion and a second plurality of nanoclusters (28) over the second portion. The second plurality of nanoclusters is removed. A second dielectric layer (38) is formed over the semiconductor layer. A conductive layer (40) is formed over the second dielectric layer.
摘要:
The invention provides a nanostructure including an anodized film including nanoholes. The anodized film is formed on a substrate having a surface including at least one material selected from the group consisting of semiconductors, noble metals, Mn, Fe, Co, Ni, Cu and carbon. The nanoholes are cut completely through the anodized film from the surface of the anodized film to the surface of the substrate. The nanoholes have a first diameter at the surface of the anodized film and a second diameter at the surface of the substrate. The nanoholes are characterized in that either a constriction exists at a location between the surface of the anodized film and the surface of the substrate, or the second diameter is greater than the first diameter.
摘要:
Nanoparticles having a mean particle size of less than about 25 nanometers and a mean pore size of less than 10 nanometers, and a mean surface area of at least 500 m2/g; nanoporous films of such nanoparticles; and composites and devices containing such nanoparticles and nanoporous films.