Tapered gradually-changed aperture microchannel plate and preparation method and application thereof

By fabricating tapered gradient aperture microchannel plates, the problems of complex processes and high costs associated with traditional microchannel plates have been solved, resulting in improved gain, reduced noise, and enhanced imaging accuracy and detection precision.

CN121839504APending Publication Date: 2026-04-10CHINA BUILDING MATERIALS ACADEMY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-03
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing microchannel plates suffer from complex manufacturing processes, high costs, severe electron diffusion, signal crosstalk, and noise control challenges, which affect imaging accuracy and detection precision.

Method used

A method for fabricating tapered gradient aperture microchannel plates was adopted. Tapered fiber monofilaments and structural filaments were prepared by periodically and linearly increasing the drawing rate to form a composite rod. Subsequent acid etching and electrode plating treatments were performed to prepare microchannel plates with high gain and low noise.

Benefits of technology

This method enables the fabrication of simple and low-cost microchannel plates, improving gain, reducing noise, and enhancing the overall performance of the microchannel plates.

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Abstract

The invention relates to a conical gradually-changed aperture microchannel plate and a preparation method thereof, and the preparation method comprises the steps: through the periodic linear increase of the wire drawing rate, preparing a conical optical fiber monofilament and a conical structure filament with the same taper angle and length as the conical optical fiber monofilament. Arranging the conical optical fiber monofilaments according to a positive dense hexagon, and inserting the conical structural filaments into gaps among the conical optical fiber monofilaments to form a composite rod; the large end faces of the conical optical fiber monofilaments uniformly face the first direction, and the small end faces of the conical structural filaments uniformly face the first direction. And drawing and arranging the composite rod to prepare the micro-channel plate blank. The micro-channel plate blank is subjected to acid etching, core glass removal, hydrogen reduction and electrode plating, and the conical gradually-changed-aperture micro-channel plate is manufactured. The method is simple in process and low in cost, improves gain, reduces noise, improves the overall performance of the microchannel plate, and is more practical.
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