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    Self aligned symmetric intrinsic process and device
    182.
    发明申请
    Self aligned symmetric intrinsic process and device 有权
    自对准对称固有过程和装置

    公开(公告)号：US20010019873A1

    公开(公告)日：2001-09-06

    申请号：US09822335

    申请日：2001-04-02

    Applicant: Research Triangle Institute

    Inventor： Paul Enquist

    IPC: H01L021/331

    CPC classification number: H01L29/7722 ,  H01L29/66242 ,  H01L29/66318 ,  H01L29/7371

    Abstract: A semiconductor device and method of fabricating the device. An emitter region is formed self centered and self aligned symmetrically with a base region. Using frontside processing techniques, a collector is formed symmetrically self-aligned with the base region and the emitter region. The collector region may be further formed self-centered with the base region using backside processing techniques. The self-aligned and self-centered symmetric structure virtually eliminates parasitic elements in the device significantly improving the device performance. The device is scalable on the order of approximately 0.1 microns. The method also provides reproduceability and repeatability of device characteristics necessary for commercial manufacture of the symmetric device.

    Abstract translation: 一种半导体器件及其制造方法。 发射极区域与基极区域对称地形成为自对中和自对准。 使用前端处理技术，集电极形成为与基极区域和发射极区域对称自对准。 可以使用背面处理技术使收集器区域进一步与基部区域自身居中。 自对准和自对中结构的对称结构实际上消除了器件中的寄生元件，显着提高器件性能。 该器件的可扩展性约为0.1微米。 该方法还提供对称设备的商业制造所需的设备特性的可再现性和可重复性。

    Encased polymer nanofiber-based electronic nose
    189.
    发明授权
    Encased polymer nanofiber-based electronic nose 有权

    公开(公告)号：US11714075B2

    公开(公告)日：2023-08-01

    申请号：US17032614

    申请日：2020-09-25

    Applicant: Research Triangle Institute

    Inventor： David S. Ensor ,  Li Han

    IPC: G01N33/00 ,  G01N27/12 ,  G01N27/22

    CPC classification number: G01N33/0047 ,  G01N27/127 ,  G01N27/227

    Abstract: A chemical sensor and a system and method for sensing a chemical species. The chemical sensor includes a plurality of nanofibers whose electrical impedance varies upon exposure to the chemical species, a substrate supporting and electrically isolating the fibers, a set of electrodes connected to the plurality of fibers at spatially separated points to permit the electrical impedance of the plurality of fibers to be measured, and a membrane encasing the fibers and having a thickness ranging from 50 μm to 5.0 mm. The system includes the chemical sensor, an impedance measuring device coupled to the electrodes and configured to determine an electrical impedance of the plurality of fibers, and an analyzer configured to identify the chemical species based on a change in the electrical impedance.

    METHOD AND APPARATUS FOR SPATIAL CONTROL OF CELLULAR GROWTH
    190.
    发明申请
    METHOD AND APPARATUS FOR SPATIAL CONTROL OF CELLULAR GROWTH 有权

    公开(公告)号：US20230094662A1

    公开(公告)日：2023-03-30

    申请号：US18053238

    申请日：2022-11-07

    Applicant: RESEARCH TRIANGLE INSTITUTE

    Inventor： Leah Marie Johnson ,  Ninell Pollas Mortensen ,  Ginger Denison Rothrock ,  Nicholas D. Huffman

    IPC: C12M1/00 ,  B29C64/40 ,  C12N5/00

    Abstract: A three-dimensional cell growth containment article is described, which includes a molded body channelized by removal of sacrificial channelizing element(s) therefrom, so that the molded body contains one or more channel(s) therein, with a matrix material in at least one of such channel(s) that is supportive of three-dimensional cell growth in the matrix material. A method for making such articles is also described, in which a molded body is formed with one or more sacrificial channelizing element(s) therein, following which the sacrificial channelizing element(s) are removed. The three-dimensional cell growth containment articles of the present disclosure may be utilized in any applications in which there exists a need to reproducibly generate three-dimensional cellular structures, e.g., islet transplantation for diabetes treatment, transplantation of hormone secreting cells, cellular scaffolds for wound healing, and generation of tissue engineering structures to regain structural usefulness for orthopedic applications.

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