Nec Corporation

Noriyuki Iguchi

Hisao Kawaura

Kazuhiro Iida

Masakazu Baba

Toshitsugu Sakamoto

Wataru Hattori

Hiroko Someya

Naoki Banno

Munehiro Tada

Katsutoshi Takahashi

Hiroshi Sunamura

Minoru Asogawa

Machiko Fujita

Provided is a rectifying element that prevents erroneous writing and an erroneous operation and that is substituted for a select transistor; a rewritable semiconductor device that uses a nonvolatile switch including the rectifying element and having excellent reliability, a small area, and low power consumption has a stacked structure of a first electrode, a first buffer layer, a rectifying layer, a second buffer layer, and a second electrode; and the rectifying layercomprises a first silicon nitride layerhaving a high nitrogen content (50 atm % or more) and second silicon nitride layersA andB having a lower nitrogen content than the first silicon nitride layer(50 atm % or less), wherein the second silicon nitride layersA andB are in contact with the first and second buffer layers (), respectively, and the first silicon nitride layeris sandwiched between the second silicon nitride layersA andB.

Rectifying element and switching element having the rectifying element

A switching element of the present invention utilizes electro-chemical reactions to operate, and comprises ion conductive layercapable of conducting metal ions, first electrodearranged in contact with the ion conductive layer, and second electrodefor supplying metal ions to the ion conductive layer, wherein an oxygen absorption layerwhich contains a material more prone to oxidization than the second electrode is formed in contact with the second electrode.

Switching element and method for manufacturing switching element

A switching device according to the present invention includes ion conductive layercontaining titanium oxide, first electrodeprovided in contact with ion conductive layer, and second electrodeprovided in contact with ion conductive layerand which can supply metal ions to ion conductive layer

Switching device, rewritable logic integrated circuit, and memory device

A switching element with a switching voltage set higher than conventional, which includes an ion conduction layer including tantalum oxide, a first electrode provided in contact with the ion conduction layer, and a second electrode provided in contact with the ion conduction layer and capable of supplying the ion conduction layer with metal ions.

Switching element, programmable logic integrated circuit and memory element

A channel () formed in a substrate () branches into channels () at a branch point (). On this branch point, obstacles () having a columnar structure are aligned at certain intervals.

Particle manipulation unit, chip and detection device having the same, mounted thereon, and methods of separating, capturing and detecting proteins

A channel formed on a chip is opened without contaminating contents of the channel. Channels () and () provided on a substrate () are covered by pressing a lid () composed of a resin layer () and a plate-like lid () to a surface of the substrate (). A fixing device has a retainer plate (), which retains the plate-like lid () of a chip (), a board () on which the substrate () is placed, and a screw (). When covering the channels () and (), the screw () is fastened and the lid () is pressed to the substrate () to be fixed. And, when opening an upper portion of the channels () and (), the screw () is turned upward and a pressure is released, and the lid () is removed from the upper potion of the substrate ().

Chip, device using the chip, and method of using the same

After a sample is previously separated into plural components in a channel formed in a microchip (), the channel is irradiated along a separation direction with a laser beam from a laser oscillator () to sequentially ionize each fraction separated in the channel. The ionized fraction is detected by a mass spectrometry unit () and analyzed by an analytical result analyzing unit (). The analytical result is stored in a memory () while associated with position information in a driver control unit () and information on laser beam irradiation condition in a laser control unit (), and the analytical result is imaged by an imaging unit (). The imaged analytical result is displayed on a display ().

Mass spectrometric system and mass spectrometry

A liquid sample () introduced in a main flow passage () is held in a dam portion (), and a trigger liquid () is filled in a trigger flow passage (). In this state, the trigger liquid () is further introduced at desired timing into the trigger flow passage () so that the front end portion of the level of the trigger liquid () is advanced and the front end portion is brought to be into contact with the dam portion (). This causes the liquid sample () to move to the right (downstream side) in the figure, resulting in the liquid sample () flowing out to the downstream side of the main flow passage (). This means that the trigger liquid () provides priming to realize a liquid switch.

Liquid switch, and microchip and mass-analyzing system using the same

A fractionating apparatus is used for fractionating sample into micro-structures different in size, and includes a fractionating unit formed with a fractionating passage; the fractionating passage is defined in a groove formed in a substrate of the fractionating unit, and pillar patches are formed in the groove at intervals wider than the gap among the pillar patches; while the sample is migrated through the fractionating passage, small-sized DNA molecules are trapped in the pillar patches, and large-sized DNA molecules are smoothly migrated through the wide intervals; this results in that the large-sized DNA molecules reaches the end of the fractionating passage faster than the small-sized DNA molecules without clogging.

Growing community of inventors

Tokyo, Japan

Noriyuki Iguchi