摘要:
An optical waveguide in which a groove is formed on the top surface of a substrate used as a lower clad and a core is formed in the groove, characterized in that the core is formed in such a way that the top face of the core within the groove is at a lower level than the top face of the substrate, and an upper clad may also be provided on the core, and the core is preferably formed from an organic-inorganic hybrid material.
摘要:
An optical waveguide in which a groove is formed on the top surface of a substrate used as a lower clad and a core is formed in the groove, characterized in that the core is formed in such a way that the top face of the core within the groove is at a lower level than the top face of the substrate, and an upper clad may also be provided on the core, and the core is preferably formed from an organic-inorganic hybrid material.
摘要:
A method of producing an organic-inorganic composite material formed from an organic polymer and a metal alkoxide, comprising the steps of polycondensating the metal alkoxide through hydrolysis until the unreacted metal alkoxide is reduced to 3 vol. % or less, and mixing it with the organic polymer to form the organic-inorganic composite material. By laminating such organic-inorganic composite materials, the resulting laminate is provided with a concentration gradation wherein the metal element of the metal alkoxide is increased or decreased from one side to the other side of the laminate.
摘要:
An organic-inorganic composite material is formed by polycondensating a metal alkoxide through hydrolysis until the unreacted metal alkoxide is reduced to 3 vol. % or less, and mixing it with an organic polymer. The composite material has a light transmittance of at least 90% per 10 μm material thickness for light of 600 to 1000 nm. The metal element content of the composite material is preferably 0.1 to 46 wt. %, more preferably 5 to 37 wt. %. By laminating layers of such organic-inorganic composite materials having respective different compositions, the resulting laminate has a concentration gradient wherein the metal element content increases or decreases monotonously, or increases and decreases in succession, from one side to the other side of the laminate. The resulting refractive index varies opposite the metal element content. The material can be used for an optical waveguide or a light transmission structure.
摘要:
A semiconductor device includes a glass substrate, a heat sink formed on the glass substrate and a transistor formed on the heat sink. The transistor includes an active layer formed on the heat sink and having a source region, a channel region and a drain region. A gate electrode is placed on the channel region. In addition, the heat sink may operate as additional gate electrode.
摘要:
A semiconductor device includes a glass substrate, a heat sink formed on the glass substrate and a transistor formed on the heat sink. The transistor includes an active layer formed on the heat sink and having a source region, a channel region and a drain region. A gate electrode is placed on the channel region. In addition, the heat sink may operate as additional gate electrode.
摘要:
A radio bus system, a radio communication apparatus and a registration communication method which can ensure a minimum level of secrecy even when radio is used during an authentication information registration procedure. A hub station and each terminal comprises a mode switching control circuit (10) for switching between two modes, one being a registration mode to be used for the transmission and reception of registration data, and the other being a normal mode to be used for the transmission and reception of general data other than the registration data, a scrambler (transmitter means) (22) for transmitting data after providing the data with predetermined data processing corresponding to the mode switched to, and a descrambler (receiver means) (27) for performing on received data a predetermined restoration process corresponding to the mode switched to. Restoration of the received data is enabled only when the mode on the transmitting end and that on the receiving end correspond with each other.
摘要:
A node configuration information management method and a wireless network system whereby node configuration information about a wireless bus comprising a hub station and a plurality of nodes is managed by the hub station in a centralized manner so that the hub station can share the latest node configuration information with all of the nodes. According to the node configuration information management method, when the node information in the wireless bus 11 is modified, a node notifies the hub station of the modification via a modification notifying packet. Further, 1) Each node and the hub station store the node configuration information about each node in a node configuration information table, and the hub station has a counter for managing the updating of the node configuration information table as a whole and transmits a count in each frame; 2) The hub station, upon reception of the node configuration modification notification from the node, updates its own node configuration information table, and broadcasts update information to all of the nodes; 3) The node receives the modification information and updates its own node configuration information table, while receiving the count transmitted in each frame, determining if there is updating on the part of the hub station, requesting retransmission of differential information concerning the difference, if any, from its own node configuration information table, and updating its own node configuration information table.
摘要:
A magnetoresistive film is disclosed which has a layered structure comprising a first ferromagnetic layer, a second ferromagnetic layer, a nonmagnetic conductive layer interposed between the first and second ferromagnetic layers, and an antiferromagnetic layer coupled with one of the first and second ferromagnetic layers. The antiferromagnetic layer comprises an antiferromagnetic material selected from an antimony-base alloy, fluoride, an FeRh-base alloy, FeS, an IrMnCo-base alloy and a CrAl-base alloy.