Canon Kabushiki Kaisha

Toshiaki Aiba

Taiko Motoi

Rie Ueno

Masaaki Shibata

Masato Yamanobe

Kumi Nakamura

Masahiko Okunuki

Haruhito Ono

Shinan Wang

Kenji Tamamori

Tohru Den

Toshihiro Ifuku

Mikio Shimada

Makoto Kubota

Soichiro Kawakami

Tatsuya Iwasaki

Takanori Matsuda

Tatsuo Furuta

Jumpei Hayashi

Takayuki Watanabe

Akira Asai

Hidetoshi Nojiri

Masahiro Okuda

Kazuhiro Takada

Masanori Mitome

Shigeki Matsutani

Nobuki Yoshimatsu

Masafumi Sano

Akio Kashiwazaki

Tadashi Okamoto

Hideaki Takahashi

Hiroyuki Hashimoto

Hidetoshi Tsuzuki

Masatoshi Watanabe

Takashi Noma

Nobuyuki Kaji

Hiromitsu Takase

Norishige Kakegawa

Mitsuru Ohtsuka

Tomoaki Masubuchi

Kaoru Ojima

A piezoelectric element having an improved piezoelectric constant is provided, and a liquid discharge head, an ultrasonic motor, and a dust removing device, each of which uses the above piezoelectric element, are also provided. A piezoelectric element at least includes a pair of electrodes and a piezoelectric material provided in contact with the pair of electrodes, the piezoelectric material is formed of an aggregate of crystal grains containing barium titanate as a primary component, and among the crystal grains of the aggregate, crystal grains at least in contact with the electrodes have dislocation layers in the grains. A liquid discharge head, an ultrasonic motor, and a dust removing device each use the above piezoelectric element.

Piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device

Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 &#x3bc;m or more and 30 &#x3bc;m or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO-yCaTiO-zCaZrO; and (2) x'BaTiO-y&#x2032;CaTiO-z&#x2032;CaZrO, provided that x, y, z, x&#x2032;, y&#x2032;, and z&#x2032; satisfy x+y+z=1, x&#x2032;+y&#x2032;+z&#x2032;=1, 0&#x2266;x&#x2032;&#x2266;0.15, 0.85&#x2266;y&#x2032;&#x2266;1, 0&#x2266;z&#x2266;0.05, x&#x3e;x&#x2032;, 0&#x3c;y&#x3c;y&#x2032;, and z&#x3e;0.

Piezoelectric ceramics, piezoelectric element, liquid ejection head, ultrasonic motor, and dust removing device

A sodium niobate powder includes sodium niobate particles having a shape of a cuboid and having a side average length of 0.1 &#x3bc;m or more and 100 &#x3bc;m or less, wherein at least one face of each of the sodium niobate particles is a (100) plane in the pseudocubic notation and a moisture content of the sodium niobate powder is 0.15 mass % or less. A method for producing a ceramic using the sodium niobate powder is provided. A method for producing a sodium niobate powder includes a step of holding an aqueous alkali dispersion liquid containing a niobium component and a sodium component at a pressure exceeding 0.1 MPa, a step of isolating a solid matter from the aqueous dispersion liquid after the holding, and a step of heat treating the solid matter at 500&#xb0; C. to 700&#xb0; C.

Sodium niobate powder, method for producing the same, method for producing ceramic, and piezoelectric element

A method of producing a material capable of electrochemically storing and releasing a large amount of lithium ions is provided. The material is used as an electrode material for a negative electrode, and includes silicon or tin primary particles composed of crystal particles each having a specific diameter and an amorphous surface layer formed of at least a metal oxide, having a specific thickness. Gibbs free energy when the metal oxide is produced by oxidation of a metal is smaller than Gibbs free energy when silicon or tin is oxidized, and the metal oxide has higher thermodynamic stability than silicon oxide or tin oxide. The method of producing the electrode material includes reacting silicon or tin with a metal oxide, reacting a silicon oxide or a tin oxide with a metal, or reacting a silicon compound or a tin compound with a metal compound to react with each other.

Method of producing lithium ion-storing/releasing material, lithium ion-storing/releasing material, and electrode structure and energy storage device using the material

A method for forming an etching mask comprises irradiating a focused ion beam onto a surface of a substrate and forming an etching mask used for oblique etching including an ion containing portion in the irradiated region. A method for fabricating a three-dimensional structure comprises preparing a substrate, irradiating a focused ion beam onto a surface of the substrate and forming an etching mask including an ion-containing portion in the irradiated region, and dry-etching the substrate from a diagonal direction using the etching mask and forming a plurality of holes.

Method for forming etching mask, method for fabricating three-dimensional structure and method for fabricating three-dimensional photonic crystalline laser device

A method of manufacturing a nano structure by etching, using a substrate containing Si. A focused Ga ion or In ion beam is irradiated on the surface of the substrate containing Si. The Ga ions or the In ions are injected while sputtering away the surface of the substrate so that a layer containing Ga or In is formed on the surface of the substrate. Dry etching by a gas containing fluorine (F) is performed with the layer containing the Ga or the In formed on the surface of the substrate taken as an etching mask, and the nano structure is formed having a pattern of at least 2 &#x3bc;m tin in depth according to a predetermined line width.

Method of manufacturing a nano structure by etching, using a substrate containing silicon

A powder material which can electrochemically store and release lithium ions rapidly in a large amount is provided. In addition, an electrode structure for an energy storage device which can provide a high energy density and a high power density and has a long life, and an energy storage device using the electrode structure are provided. In a powder material which can electrochemically store and release lithium ions, the surface of particles of one of silicon metal and tin metal and an alloy of any thereof is coated by an oxide including a transition metal element selected from the group consisting of W, Ti, Mo, Nb, and V as a main component. The electrode structure includes the powder material. The battery device includes a negative electrode having the electrode structure, a lithium ion conductor, and a positive electrode, and utilizes an oxidation reaction of lithium and a reduction reaction of lithium ion.

Powder material, electrode structure using the powder material, and energy storage device having the electrode structure

A nano structure formed on the surface of a substrate containing Si and having a pattern of at least 2 &#x3bc;m in depth, in which Ga or In is contained in the surface of the pattern, and the Ga or the In has a concentration distribution that an elemental composition ratio Ga/Si or In/Si of Si and Ga or In detected by an X-ray photoelectron spectroscopy is at least 0.4 atomic percent in the depth direction of the substrate, and the maximum value of the concentration is positioned within 50 nm of the surface of the pattern.

Nano structure and method of manufacturing nano structure

Provided is a field-effect transistor including an active layer and a gate insulating film, wherein the active layer includes an amorphous oxide layer containing an amorphous region and a crystalline region, and the crystalline region is in the vicinity of or in contact with an interface between the amorphous oxide layer and the gate insulating film.

Field-effect transistor

A method for fabricating a three-dimensional photonic crystal comprises the steps of: forming a dielectric thin film; injecting ions selectively into the dielectric thin film by using a focus ion beam to form a mask on the dielectric thin film; forming a pattern by selectively removing an exposed part of the dielectric thin film at which the mask is not formed on the dielectric thin film; forming a sacrificial layer on the dielectric thin film having the pattern formed therein; and flattening the sacrificial layer formed on the dielectric thin film until the pattern comes to the surface.

Method for fabricating three-dimensional photonic crystal

An adhesiveness evaluation method that can be used to accurately evaluate the adhesiveness of a selected specific micro-spot of a specimenof a small size. A part to be measuredis produced by isolating it from a surrounding partand fixing it to a &#x3bc;-probe, which is a support member. Then, the pulling force is applied to the part to be measuredusing the &#x3bc;-probe, which is the support member and which is fixed to it, to evaluate the adhesiveness of the part to be measured

Method of evaluating adhesiveness of member

Provided is an electron-emitting device with high electron emission efficiency and with stable electron emission characteristics over a long period. The electron-emitting device has a substrate, first and second carbon films laid with a first gap in between on the surface of the substrate, and first and second electrodes electrically connected to the first carbon film and to the second carbon film, respectively. In the electron-emitting device, a narrowest gap portion between the first carbon film and the second carbon film in the first gap is located above a surface of the substrate and the substrate has a depressed portion, at least, in the first gap.

Electron-emitting device, electron source using the electron-emitting devices, and image-forming apparatus using the electron source

Nucleic acid probes arranged on a nucleic acid chip substrate in a matrix form can be analyzed quantitatively by TOF-SIMS with accuracy by forming a phosphorus-containing area which can be used as a standard on the substrate.

Probe carrier and method for analyzing the probe carrier

A method of moving an object includes a step of fixing the object to an object-moving device, a step of moving the object to a prescribed position by the object-moving device, and a step of releasing the object from the object-moving device. The fixing step includes forming a deposit for fixation of the object to the object-moving device by applying a first corpuscular beam in a first gas to form a deposit. The releasing step includes etching the deposit by applying a second corpuscular beam in contact with a second gas.

Object-moving method, object-moving apparatus, production process and produced apparatus

An electron-emitting device includes a substrate, first and second carbon films disposed so as to have a first gap between the first and second carbon films on a surface of the substrate, and first and second electrodes electrically connected with the first and the second carbon films respectively, wherein the carbon film has a region showing orientation, and a direction of the orientation is in an approximately parallel direction along the substrate surface. Thereby, it is possible to improve thermal and chemical stability of a carbon film and stabilize good electron emission characteristics over a long period.

Electron-emitting device having carbon films with a particular orientation, electron source using electron-emitting device, and image forming apparatus

Growing community of inventors

Fujisawa, Japan

Toshiaki Aiba