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    FUNCTIONALIZED CARBON NANOTUBES
    2.
    发明申请
    FUNCTIONALIZED CARBON NANOTUBES 审中-公开

    公开(公告)号：US20190136039A1

    公开(公告)日：2019-05-09

    申请号：US16240336

    申请日：2019-01-04

    申请人： International Business Machines Corporation

    发明人： Brandon M. KOBILKA ,  Joseph KUCZYNSKI ,  Jacob T. PORTER ,  Jason T. WERTZ

    IPC分类号： C08L43/02 ,  C01B32/174 ,  C08L9/06

    摘要： A material comprises a carbon nanotube and a methyl methacrylate group covalently bonded to a surface of the carbon nanotube. In some examples, the material can further comprise a polymeric chain appended to the surface of the carbon nanotube via the methyl methacrylate group. In some examples, the polymeric chain can include styrene monomer repeating units and butadiene monomer repeating units. In some examples, the polymeric chain can include a flame retardant moiety appended thereon and/or flame retardant monomer repeating units. In some examples, the carbon nanotube can be incorporated or combined with a resin material to provide a composite component. A method to produce a carbon nanotube having a polymeric chain appended thereto is also described.

    TAMPER-RESPONDENT SENSORS WITH RANDOM THREE-DIMENSIONAL SECURITY PATTERNS
    8.
    发明申请
    TAMPER-RESPONDENT SENSORS WITH RANDOM THREE-DIMENSIONAL SECURITY PATTERNS 有权

    公开(公告)号：US20230068967A1

    公开(公告)日：2023-03-02

    申请号：US17460421

    申请日：2021-08-30

    申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

    发明人： John S. WERNER ,  Jason T. WERTZ ,  John TOROK ,  Noah SINGER ,  Arkadiy O. TSFASMAN ,  Budy NOTOHARDJONO

    IPC分类号： H05K1/02 ,  H05K3/10

    摘要： Tamper-respondent sensors with random three-dimensional security patterns and methods of fabrication are provided. The method includes establishing a security circuit pattern for a security circuit of a tamper-respondent sensor to enclose, at least in part, one or more components of a circuit board within a secure volume. The establishing includes obtaining in three-dimensions boundaries for the security circuit of the tamper-respondent sensor. The boundaries define a sensor volume within which the security circuit is to reside. The establishing also includes generating at least one trace configuration for the security circuit pattern. The at least one trace configuration defines a random, three-dimensional security pattern within the sensor volume, and the at least one trace configuration establishes, at least in part, the security circuit pattern. The process further includes fabricating the tamper-respondent sensor using, at least in part, the established security circuit pattern.