Non-aqueous borate routes to boron nitride
    552.
    发明授权
    Non-aqueous borate routes to boron nitride 失效
    非硼酸硼酸盐路线到氮化硼

    公开(公告)号:US07192644B2

    公开(公告)日:2007-03-20

    申请号:US11186787

    申请日:2005-07-22

    Abstract: A non-aqueous route and process for preparation of boron nitride utilizing aerosol assisted vapor phase synthesis (AAVS) wherein boron precursors are nitrided in one or two heating steps, and wherein a boron oxide nitride carbide intermediary composition is formed after the first heating step and may be further nitrided to form resultant spheroidal boron nitride powders including dense or hollow spheroidal particles that are smooth, bladed, dense or hollow, have protruding whiskers, and are of turbostratic or hexagonal crystalline structure, specifically wherein the boron precursor is dissolved in a non-aqueous solution prior to aerosolization.

    Abstract translation: 一种非水路线和利用气溶胶辅助气相合成(AAVS)制备氮化硼的方法,其中硼前体在一个或两个加热步骤中氮化,并且其中在第一加热步骤之后形成氧化硼氮化碳中间体组合物, 可以进一步氮化以形成球形氮化硼粉末,其包括平滑,叶片,致密或中空的致密或中空球形颗粒,具有突出的晶须,并且具有涡流或六方晶结构,其中硼前体溶解在非 - - 雾化前的水溶液。

    Stabilization system based on properties of polarization maintaining fibers

    公开(公告)号:US11422320B1

    公开(公告)日:2022-08-23

    申请号:US16847607

    申请日:2020-04-13

    Applicant: STC.UNM

    Abstract: A nonlinear transmission system comprising a polarization maintaining (PM) fiber and a polarizer, based on the extreme sensitivity of the state of polarization of transmitted light on various parameters, such as the temperature, the optical power input to the fiber. Passive stabilization is achieved by simply terminating the PM fiber by a polarizer at a selected angle. Active stabilization of the optical length of the PM fiber is achieved by feeding back the transmitted into the control of optical power sent through the fiber.

    OPTICAL NUCLEAR MAGNETIC RESONANCE MICROSCOPE AND MEASUREMENT METHODS

    公开(公告)号:US20210255126A1

    公开(公告)日:2021-08-19

    申请号:US17271445

    申请日:2019-08-27

    Abstract: A variety of application can use nuclear magnetic resonance as an investigative tool. Nuclear magnetic resonance measurements can be conducted using a nuclear magnetic resonance microscope. An example nuclear magnetic resonance microscope can comprise a film embedded in a coverslip, where the film is doped with reactive centers that undergo stable fluorescence when illuminated by electromagnetic radiation having a wavelength within a range of wavelengths and a magnetic field generator to provide a magnetic field for nuclear magnetic resonance measurement of analytes when disposed proximal to the film. Microwave striplines on the coverslip can be arranged to generate microwave fields to irradiate the analytes for the nuclear magnetic resonance measurement. Control of the microwave signals on the microwave striplines can be used for dynamic nuclear polarization in the nuclear magnetic resonance measurement of analytes.

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