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    Polarization-selecting nano light-emitting diodes
    562.
    发明授权
    Polarization-selecting nano light-emitting diodes 有权

    公开(公告)号：US10804431B2

    公开(公告)日：2020-10-13

    申请号：US16243645

    申请日：2019-01-09

    Applicant: ACADEMIA SINICA

    Inventor： Yun-Chorng Chang

    IPC: H01L33/08 ,  H01L33/06 ,  H01L33/42 ,  H01L33/32 ,  H01L33/24

    Abstract: Current-injecting nanorod LEDs are demonstrated to emit linear polarized light that is detected from the backside of the sample. The polarization ratio of the electroluminescence reaches 71% when the length of the minor axis is as small as 150 nm. Electromagnetic simulation confirms the occurrence of the polarization selectivity especially when the length of the minor axis is down to 150 nm. The destructive interference between the light directly from light source and the reflected light by the top metal interface is the origin of the selectivity. Emission with the polarization perpendicular to the nanorods is extracted out of the nanorods and the remaining light with the other polarization transmits to the substrate. The linearly polarized light can be also detected from the front side of the sample if the conductive pad is transparent. The simulation also suggests that it is possible to obtain circularly or elliptically polarized light by tuning the height of the nanorods. These observed phenomena could also apply to fin-shaped nanowall LED. The results in this study will be beneficial for applications that required linearly or circularly polarized light especially for devices that are not suitable to use an external polarizer.

    DEVICE FOR CHARACTERIZING PARTICLES AND USES THEREOF
    565.
    发明申请
    DEVICE FOR CHARACTERIZING PARTICLES AND USES THEREOF 审中-公开

    公开(公告)号：US20200161110A1

    公开(公告)日：2020-05-21

    申请号：US16686203

    申请日：2019-11-17

    Applicant: Academia Sinica

    Inventor： Abdil OZDEMIR ,  Jung-Lee LIN ,  Chung-Hsuan CHEN

    IPC: H01J49/00 ,  H01J49/06 ,  H01J49/16

    Abstract: Disclosed herein is a device for characterizing a biological sample or an airborne sample. According to embodiments of the present disclosure, the device comprises an electrospray source, a mass analyzer, a charge detector, and optionally, an ion guide. The present device is useful in analyzing the particle population in the biological or airborne sample based on the mass to charge (m/z) ratio and the charge (z) of each particle. Also disclosed herein are the methods of making a diagnosis of cancer by use of the present device, and methods of determining the mass distribution of particles in an airborne sample.

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