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Motoyuki Hirooka

Motoyuki Hirooka, Kumagaya JP

Patent application numberDescriptionPublished
20100270512ELECTRICALLY CONNECTED GRAPHENE-METAL ELECTRODE DEVICE, AND ELECTRONIC DEVICE, ELECTRONIC INTEGRATED CIRCUIT AND ELECTRO-OPTICAL INTEGRATED CIRCUIT USING SAME - An device according to the present invention comprises: graphene; and a metal electrode, the metal electrode and the graphene being electrically connected, the following relationship of Eq. (1) being satisfied:10-28-2010
20100304131TRANSPARENT CONDUCTIVE FILM AND ELECTRONIC DEVICE INCLUDING SAME - The transparent conductive film according to the present invention comprises graphene platelets which overlap one another to form a multilayer structure. The average size of the graphene platelets is 50 nm or more and the number of layers of the graphene platelets is 9 or less. The transparent conductive film has an electrical resistivity of 1.0×1012-02-2010
20100325761Scanning Probe Microscope and Method of Observing Sample Using the Same - Optical information and topographic information of the surface of a sample are measured at a nanometer-order resolution and with high reproducibility without damaging a probe and the sample by combining a nanometer-order cylindrical structure with a nanometer-order microstructure to form a plasmon intensifying near-field probe having a nanometer-order optical resolution and by repeating approach/retreat of the probe to/from each measurement point on the sample at a low contact force.12-23-2010

Motoyuki Hirooka, Hitachi JP

Patent application numberDescriptionPublished
20090243637MEASURING APPARATUS HAVING NANOTUBE PROBE - An object of the present invention is to provide a measuring apparatus such as a conduction characteristics evaluation apparatus, a probe microscope, etc. having a nanotube probe, wherein the measuring apparatus is succeeded in reducing the electrical resistance of the carbon nanotube as well as the electrical resistance between the carbon nanotube and a metal substrate to improve electrical conduction characteristics of the nanotube probe and attain a uniform diameter, thus improving the measurement accuracy.10-01-2009
20100043108PROBE FOR SCANNING PROBE MICROSCOPE - In a tip having a carbon nanotube tip used to a scanning probe microscope, its length of the tip is adjusted in a several order of 10 nm and the tip maintains cylindrical shape up to the extremity portion.02-18-2010
20100064396SCANNING PROBE MICROSCOPE AND SAMPLE OBSERVING METHOD USING THE SAME - In a near-field scanning microscope using an aperture probe, the upper limit of the aperture formation is at most several ten nm in practice. In a near-field scanning microscope using a scatter probe, the resolution ability is limited to at most several ten nm because of the external illuminating light serving as background noise. Moreover, measurement reproducibility is seriously lowered by a damage or abrasion of a probe. Optical data and unevenness data of the surface of a sample can be measured at a nm-order resolution ability and a high reproducibility while damaging neither the probe nor the sample by fabricating a plasmon-enhanced near-field probe having a nm-order optical resolution ability by combining a nm-order cylindrical structure with nm-order microparticles and repeatedly moving the probe toward the sample and away therefrom at a low contact force at individual measurement points on the sample.03-11-2010
20100200839GRAPHENE GROWN SUBSTRATE AND ELECTRONIC/PHOTONIC INTEGRATED CIRCUITS USING SAME - A graphene-on-oxide substrate according to the present invention includes: a substrate having a metal oxide layer formed on its surface; and, formed on the metal oxide layer, a graphene layer including at least one atomic layer of the graphene. The graphene layer is grown generally parallel to the surface of the metal oxide layer, and the inter-atomic-layer distance between the graphene atomic layer adjacent to the surface of the metal oxide layer and the surface atomic layer of the metal oxide layer is 0.34 nm or less. Preferably, the arithmetic mean surface roughness Ra of the metal oxide layer is 1 nm or less.08-12-2010
20100218287SCANNING PROBE MICROSCOPE AND METHOD OF OBSERVING SAMPLE USING THE SAME - In a scanning probe microscope, a nanotube and metal nano-particles are combined together to configure a plasmon-enhanced near-field probe having an optical resolution on the order of nanometers as a measuring probe in which a metal structure is embedded, and this plasmon-enhanced near-field probe is installed in a highly-efficient plasmon exciting unit to repeat approaching to and retracting from each measuring point on a sample with a low contact force, so that optical information and profile information of the surface of the sample are measured with a resolution on the order of nanometers, a high S/N ratio, and high reproducibility without damaging both of the probe and the sample.08-26-2010

Patent applications by Motoyuki Hirooka, Hitachi JP