Other

Nec Corporation

Nissan Chemical Industries Limited

Tokyo Institute of Technology

International Superconductivity Technology Center

Takehiko Mori

Shoji Tanaka

Kazuo Mori

Izumi Hirabayashi

Masato Kanno

Koichiro Aoyama

Hiroo Inokuchi

Hatsumi Mori

Yusei Maruyama

To provide an organic semiconductor of tetrathiafulvalene derivative and an organic thin-film transistor formed therefrom, the tetrathiafulvalene derivative being readily formed into a stable thin film and the organic thin-film transistor having a high mobility and being driven at a low threshold voltage, an organic semiconductor includes a hexamethylenetetrathiafulvalene compound represented by the formula (1) below, and an organic thin-film transistor having a thin film obtained therefrom (where Rand Reach independently denote an alkyl group which may have a C1-10 branched structure).

Tetrathiafulvalene derivatives and organic thin-film transistor

This describes the following five novel organic substances: Bis (ethylenedithio) tetrathiafulvalene (henceforth to be called BEDT-TTF) compounded with cyanometalate anions in what is called Tetracyano Nickel acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate expressed by (BEDT-TTF).sub.4 [Ni(CN).sub.4 ].H.sub.2 O, Tetracyano Platinum acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate that is expressed by (BEDT-TTF).sub.4 [Pt(CN).sub.4 ].H.sub.2 O, Cyanide Palladium Bis (Ethylenedithio) Tetrathiafulvalene salt that is expressed by (BEDT-TTF)-[Pd(CN).sub.2 ], Tetracyano Palladium acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate that is expressed by (BEDT-TFF).sub.4 [Pd(CN).sub.4 ].H.sub.2 O and Tetracyano Palladium acid Bis (Ethylenedithio) Tetrathiafulvalene salt that is represented by (BEDT-TTF).sub.4 [Pd(CN).sub.4 ]. BEDT-TTF, acting as a common constituent in the crystals of all of the above substances, provides the properties of an insulator, a metal or a superconductor. Anions that construct the framework of BEDT-TTF determine the arrangement of BEDT-TTF and thus the electronic state of the compound. It can be predicted that superconducting phenomena could be discovered in compounds of BEDT-TTF type in which there are compounded cyanometalate anions that have the tendency to form large frameworks so that the effective volume is large as in the case of the novel substances of the present invention.

Bis(ethylenedithio)tetrathiafulvalene.cyanometalate complex

A pulse discriminating circuit discriminates narrow input pulses from an input pulse signal for eliminating output pulses corresponding to the narrow pulses from an output pulse signal thereof, and comprises a delay unit supplied with the input pulse signal for introducing predetermined time delay into propagation of the input pulse signal in synchronism with a two-phase clock signal, and an eliminating unit responsive to output signals of the delay unit and operative to produce the output pulse signal consisting of output pulses corresponding to wide input pulses, wherein the delay unit comprises early stages responsive to the two-phase clock signal for transferring the input pulse signal, and later stages responsive to a transfer signal lower in frequency than the two-phase clock signal for transferring the input pulse signal so that the predetermined time delay is prolonged without increase the stages of the delay unit.

Narrow pulse eliminating circuit through transmission of input pulse

A filtering apparatus includes a plurality of disc-type filtering elements stacked in parallel with each other. Each disc-type filtering element has one or more annular projections thereon facing an adjacent disc defining a filtering slit. One or more fluid passages define a filtering path therethrough. Fine particles are filtered from a fluid by the slits between the adjacent filtering elements. Adjustment of the slit widths permits trapped particles to be removed by back-washing. A power cylinder permits automatic filtering and back-washing.

Filtering apparatus

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Tokyo, Japan

Takehiko Mori