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    FERROELECTRIC STORAGE READ/WRITE MEMORY
    1.
    发明专利
    FERROELECTRIC STORAGE READ/WRITE MEMORY 失效

    公开(公告)号：JP2000216349A

    公开(公告)日：2000-08-04

    申请号：JP32077399

    申请日：1999-11-11

    Applicant: IBM

    Inventor： HEMANTA K VIKURAMASHINGE ,  SARAF RAVI F

    IPC: C12N15/00 ,  G11C11/22 ,  G11C13/02 ,  H01L21/8246 ,  H01L27/10 ,  H01L27/105 ,  H01L51/00 ,  H01L51/05 ,  H01L51/30 ,  H01L51/40

    Abstract: PROBLEM TO BE SOLVED: To realize a ferroelectric storage read/write memory by providing a ferroelectric substance between, a pair of conductors and setting a sufficient isolation distance for permitting a tunnel current the distance between a pair of conductors. SOLUTION: Two isolation electrodes 1, 2 are interconnected through a region 3 of ferroelectric substance. The isolation electrodes 1, 2 are normally made of a conductive material and have line width of 1-500 nm and thickness of 100-1000 nm. The ferroelectric substance has thickness of about 10 nm or less which permits tunnel effect. Available ferroelectric substance includes barium titanate having Curie point of 120 deg.C, potassium niobate having Curie point of 415 deg.C, triglycine sulfate having Curie point of 49 deg.C, Rochelle salt having Curie point of 23 deg.C, and iron niobate having Curie point of 112 deg.C. Data can be stored by aligning the electric dipole in the ferroelectric layer.

    CHEMICAL LABELLING
    4.
    发明专利
    CHEMICAL LABELLING 失效

    公开(公告)号：JP2000093174A

    公开(公告)日：2000-04-04

    申请号：JP26336999

    申请日：1999-09-17

    Applicant: IBM

    Inventor： SARAF RAVI F

    IPC: C12N15/09 ,  C07H21/04 ,  C12Q1/68 ,  G01N33/58 ,  H01L21/308

    Abstract: PROBLEM TO BE SOLVED: To provide a method for labelling DNA by providing double-stranded DNA, denaturing a part of the DNA, followed by attaching at least one detectable compound motiety to the denatured part to prevent recrystallization of the part. SOLUTION: This method comprises the steps of providing at least one double-stranded DNA molecule 1, denaturing at least one part of DNA 1, and attaching at least one compound motiety at attaching parts 7, 13, and 15 to the denatured part 3 to prevent recrystallization of the part 3, wherein the compound motiety is bound with inserting compound motiety 5 or 11 which has a detectable part 9 or 17 such as a fluorescent dye. This method is useful for biochemical labelling of DNA molecules.

    SELF-ORGANIZED NANODEVICE UTILIZING DNA
    6.
    发明专利
    SELF-ORGANIZED NANODEVICE UTILIZING DNA 失效

    公开(公告)号：JP2000101167A

    公开(公告)日：2000-04-07

    申请号：JP26330699

    申请日：1999-09-17

    Applicant: IBM

    Inventor： SARAF RAVI F ,  WICKRAMASINGHE HEMANTHA

    IPC: B82B1/00 ,  B82B3/00 ,  C12M1/00 ,  C12P19/34 ,  C12Q1/68 ,  G06N3/12 ,  H01L21/28 ,  H01L21/3205 ,  H01L23/52 ,  H01L29/06 ,  H01L51/00 ,  H01L51/05 ,  H01L51/30 ,  H01L51/40

    Abstract: PROBLEM TO BE SOLVED: To manufacture a nanodevice of a nanometer scale by a method wherein inorganic atoms are bonded to specified positions on an organic structure to constitute a product. SOLUTION: An organic structure formed by a method wherein one piece of a nucleotide 31 is made to bond to DNA molecules 17 and 19 comprising one piece of an R loop 27 having nanoparticles 29, which are made to bond to the nucleotide 31 and are used as inorganic atoms, is formed between a first electrode 3 and a second electrode 5. By such organic structure, after a conductive material 35 is plated on DNA molecules 21, which are extended between the electrodes 3 and 5, an electrostatic bond 37 is generated between the material 35 on the DNA particles 21 and the nanoparticles 29. Thereby, a nanodevice, which is used as a device of a nanometer scale, can be manufactured.

    ELECTROCONDUCTIVE POLYMER STRUCTURE AND PRODUCTION THEREOF
    7.
    发明专利
    ELECTROCONDUCTIVE POLYMER STRUCTURE AND PRODUCTION THEREOF 失效

    公开(公告)号：JPH1046027A

    公开(公告)日：1998-02-17

    申请号：JP5912897

    申请日：1997-03-13

    Applicant: IBM

    Inventor： ANGELOPOULOS MARIE ,  YUN-HSIN LIAO ,  SARAF RAVI F

    IPC: C08K5/10 ,  C08L49/00 ,  C08L65/00 ,  C08L79/02 ,  C08L81/04 ,  C08L101/12 ,  H01B1/12

    Abstract: PROBLEM TO BE SOLVED: To obtain an electroconductive polymer structure having a high degree of crystallinity and to provide a method for producing the same. SOLUTION: This structure containing a polycrystalline material containing microcrystals of an electroconductive polymer and precursor thereof, contains amorphous materials of the polymer and the precursor thereof in mediating regions among the microcrystals. By adding an additive such as a plasticizer and a diluent to a solution for forming a polycrystalline material, a high degree of crystallinity is obtained by giving a high mobility to the polymer molecules for associating each other and producing the polymer under a condition for forming a crystalline state. The form of the polycrystalline material can be adjusted so as to modify the characteristics of the material such as a degree of crystallinity, a size of the crystalline particles, a glass transition temperature, a thermal expansion coefficient and an electroconductivity. As opposed to a stretched film having an anisotropic electroconductivity, the polycrystalline material attains an isotropic and high electroconductivity without getting stretched.

    10.
    发明专利
    未知

    公开(公告)号：AT420203T

    公开(公告)日：2009-01-15

    申请号：AT99306969

    申请日：1999-09-02

    Applicant: IBM

    Inventor： SARAF RAVI F

    IPC: C12N15/09 ,  C12Q1/68 ,  C07H21/04 ,  G01N33/58 ,  G06N3/12 ,  H01L21/308

    Abstract: A method for forming a biological chemical tag. At least one double stranded DNA molecule is provided. At least a portion of the at least one double stranded DNA molecule is denatured. At least one chemical moiety that prohibits recrystallization of the at least one denatured portion to which the at least one chemical moiety is attached is attached to at least one nucleotide in the at least one denatured portion of the at least one double stranded DNA molecule.

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