Abstract:
The present invention provides a cylindrical magnetic levitation stage and an exposure apparatus, which can form a nanoscale pattern of a large area directly on the surface of a large cylinder. The present invention provides an exposure apparatus including a new type of cylindrical magnetic levitation stage, which can levitate, rotate, and move a cylinder in the axial direction by the principle of magnetic levitation in a non-contact manner and form a nanoscale pattern on the surface of the cylinder, and a light source for irradiating light on the surface of the cylinder, thereby reducing the position error of the cylindrical magnetic levitation stage to a nanoscale size and correcting the error caused by mechanical processing in real time. Moreover, the present invention provides an exposure apparatus, which includes a differential vacuum means combined with the cylindrical magnetic levitation stage to create a partial vacuum environment between the light source and the surface of the cylinder, and thus it is possible to employ light sources such as X-rays, electron beams, extreme ultraviolet (EUV) rays, etc.
Abstract:
The present invention relates to a photonic crystal diode resonator for modulated electric field emission and electromagnetic wave oscillation; the photonic crystal resonator according to one aspect of the present invention comprises a structure wherein a plurality of dielectric rods including point defects and line defects are combined between a first metal substrate and a second metal substrate, and an electron emission source (cold anode) of a certain size is formed on said point defect location of said first metal plate.
Abstract:
The present invention provides a cylindrical magnetic levitation stage which includes a cylindrical substrate used to form micro-patterns of various arbitrary shapes on a large-area semiconductor substrate or display panel substrate, a cylindrical substrate, a combination of a first permanent magnet array and a first coil array and a combination of a first permanent magnet array and a first coil array, which are coupled to the cylindrical substrate, so that levitation, axial translation and rotation of the cylindrical substrate can be made finely through the control of a magnetic force generated by the interaction between a magnetic field generated by electric current applied to the coil arrays and a magnetic field generated from the permanent magnet arrays corresponding to the coil arrays.
Abstract:
The present invention relates to a method for producing a photonic crystal device having a photonic crystal structure which can be used in photonic crystal devices such as optical waveguides, resonators, filters, antennas and Smith-Purcell free electron lasers which can be employed in a desired electromagnetic waveband by application of semiconductor processing technology and of an anisotropic wet process which uses the crystallization direction (100) of a silicon wafer; for producing a photonic crystal device which comprises a photonic crystal part having a periodic array of silicon crystals having a predetermined form and a covering part for reducing optical losses in the axial direction to be used as an optical waveguide or a resonator, thereby to be capable of being applied in a desired electromagnetic band; and which can have the conductive photonic-crystal characteristics by not coating the silicon crystal with an electrically conductive material and the metal photonic-crystal characteristics by coating the silicon crystal with an electrically conductive material. This production method makes it possible to mass-produce photonic crystal structures of relatively low cost and substantial height within a short time.
Abstract:
Disclosed is an apparatus and method for low-temperature plasma immersion processing of a variety of workpieces using accelerated ions, wherein low-temperature plasma is distributed around a cylindrical workpiece placed in a chamber, the workpiece is enclosed with a housing including a multi-slot extracting electrode to isolate the workpiece from plasma, and a negative potential sufficient to induce sputtering is applied to the workpiece and the electrode, so that ions from plasma are accelerated within the sheath formed between the extracting electrode and plasma, pass through the slot part of the electrode and bombard the workpiece, thus polishing the surface of the workpiece. This apparatus and method is effective for surface smoothing to ones of nm of large cylindrical substrates particularly substrates for micro or nanopattern transfer. This method includes plasma cleaning, surface activating, surface smoothing, dry etching, deposition, plasma immersion ion implantation and deposition within a single or multi chamber.
Abstract:
The serial compensation rectifier, according to one aspect of the present invention, comprises: a compensation type power transformer connected to a single or multiple phase alternating-current power supply; a rectifier unit that rectifies a voltage, including said single or multiple phase alternating current voltage, transmitted via a first winding wire of said compensation type power transformer; a serial compensation inverter unit connected to a second winding wire of said compensation type power transformer; and a direct current capacitor connected to an output port of said serial compensation inverter unit. Output ports of said direct current capacitor and said rectifier unit are wired directly or via a direct current convertor, and said serial compensation inverter unit controls the power factor and the electric power of the input voltage of said alternating-current power transmitted via said compensation type power transformer, and said rectification unit enables the control of the rectified voltage.
Abstract:
The present invention relates to a resonator structure in which an alternating current (AC) voltage is additionally applied between two metallic surfaces where a constant direct current (DC) voltage is applied to allow either of the two metallic surfaces to generate a pulse electron beam in a stable manner through an electron amplification caused by a secondary electron. The present invention also relates to a photonic crystal resonator in which a direct current (DC) voltage, a pulse signal, or the like are additionally applied via an external power source to the 2-dimensional photonic crystal resonator where electromagnetic waves are coupled to generate a pulse electron beam through a secondary electron amplification, thereby forming deflected electromagnetic waves (AC signals) of several GHz frequency or higher between two metal plates constituting the resonator.
Abstract:
The present invention relates to an inductively coupled plasma processing chamber and method for a cylindrical workpiece with a three-dimensional profile, and more particularly to an inductively coupled plasma processing reactor and method for a cylindrical workpiece with a three-dimensional profile, in which the workpiece serving as an internal RF antenna is connected to an RF power source through an impedance matching network at one end, and a terminating capacitor at another end so as to achieve low plasma contamination, confine dense uniform plasma in the substrate vicinity and suppress secondary electrons emitted from the substrate, and a plasma process can be applied to a 3-D linear semiconductor device, a metal, glass, ceramic or polymer substrate having planar or 3-D structured micro or nano patterns, and the like.