ULTRAVIOLET CATHODOLUMINESCENT LAMP, SYSTEM AND METHOD

    公开(公告)号:US20250079149A1

    公开(公告)日:2025-03-06

    申请号:US18955699

    申请日:2024-11-21

    Abstract: A cathodoluminescent lamp includes a filament configured to emit electrons responsive to a voltage applied across the filament, an anode configured to receive electrons emitted from the filament, an emitter comprising cathodoluminescent material, disposed in proximity to the anode, configured to emit photons responsive to stimulation from the electrons and a vacuum envelope configured to enclose the filament, anode, and emitter, and to maintain a vacuum over a path of the electrons. The filament comprises a smooth electron emitting surface. The cathodoluminescent material may comprise a semiconductor material.

    SYNTHESIS OF H-BN USING METALLIC SOLVENT AND HIGH-TEMPERATURE SOAKS

    公开(公告)号:US20230374695A1

    公开(公告)日:2023-11-23

    申请号:US18199285

    申请日:2023-05-18

    CPC classification number: C30B9/06 C30B9/10 C30B29/403

    Abstract: To produce hexagonal boron nitride (h-BN), boron and nitrogen are added to a metallic solvent in a crucible in a reaction chamber and heat-treated. In an absorption step, a first soak is performed at a first temperature that is high enough to cause absorption of the nitrogen and boron into the metallic solvent. In a nucleation step after the absorption step, the first temperature is rapidly reduced to a second temperature, and h-BN nuclei are formed in the metallic solvent. In a growth step after the nucleation step, a second soak is performed at the second temperature to grow the h-BN nuclei. After the growth step, the h-BN nuclei are separated from the metallic solvent.

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