Anodic Scintillator Template for X-ray Light Conversion
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Solution Overview
Problem
Traditional CsI scintillator manufacturing processes face issues such as high costs, long manufacturing times, yellow discolouration, air pores, and cloudiness, which reduce the efficiency of visible light output and signal-to-noise ratio, particularly due to the use of semiconductor process technologies and conventional anodic treatments.
Innovation Solution
A scintillator with a sub-micron column structure is manufactured using anodic treatment and die casting technology, featuring a tubular template with thin film oxidized metal tubes, a reflective layer on the inner walls, and a package layer to protect the scintillators from water vapor and oxygen, allowing for controlled aperture size, thickness, and density, enabling efficient X-ray to visible light conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If semiconductor process technologies are used to manufacture CsI scintillator, then manufacturing precision and structural control are improved, but manufacturing cost and production time increase significantly
Solution Approach 1:
The patent replaces complex semiconductor mechanical processes (lithography, etching, deposition) with a chemical anodic treatment process. The anodic treatment uses electrochemical oxidation to directly form the columnar microstructure in a single step, eliminating the need for multiple mechanical and thermal processing stages, thus reducing production time while maintaining structural precision.
Solution Approach 2:
The patent changes the manufacturing approach by using anodic treatment parameters (electrolyte composition, voltage, time) to control the microstructure formation. By adjusting these parameters, the column diameter, density, and morphology are precisely controlled without requiring complex semiconductor equipment, achieving both precision and efficiency.
2Productivity
If conventional anodic treatment is applied to produce porous structure, then manufacturing cost and speed are improved, but the porous structure requires post sealing process increasing complexity
Solution Approach 1:
The patent extracts and removes the sealing step from the conventional anodic treatment process. By controlling the anodic treatment parameters and electrolyte composition, the process directly produces a dense columnar structure without requiring subsequent sealing operations, thus simplifying the manufacturing process while maintaining production speed.
Solution Approach 2:
The patent performs the structure-forming action during the anodic treatment process itself, rather than requiring post-processing. The columnar microstructure is formed in its final dense state during the electrochemical oxidation, eliminating the need for separate sealing steps that would otherwise be required.
3Ease of manufacture
If traditional CsI scintillator process is used, then ease of manufacture is improved, but yellow discolouration, air pores, and cloudiness occur reducing light output efficiency
Solution Approach 1:
The patent uses an inert or controlled atmosphere during the anodic treatment process to prevent oxidation and contamination that cause yellow discolouration. The controlled electrolyte environment and processing conditions prevent air pores and cloudiness formation, ensuring high light output quality while maintaining manufacturing ease.
Solution Approach 2:
The patent changes the chemical and physical parameters of the manufacturing process (electrolyte composition, pH, temperature, voltage) to prevent defect formation. These parameter optimizations eliminate yellow discolouration, air pores, and cloudiness while keeping the process simple and easy to manufacture.
4Reliability
If scintillator thickness is increased to improve signal-to-noise ratio, then detection sensitivity is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent changes the microstructural parameters (column diameter, density, height) through anodic treatment to achieve the required light output and signal-to-noise ratio with reduced thickness. By optimizing these parameters, the scintillator achieves high detection sensitivity without requiring increased thickness that would complicate manufacturing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach results in a low-cost, rapid production method for high-value scintillators with improved light-outputting quality and signal-to-noise ratio, suitable for medical and security applications, while avoiding the drawbacks of traditional methods.
Implementation Method 1
The scintillator with sub-micron column structure is able to transform the X-ray to a visible light
Implementation Method 2
The scintillation occurring in the scintillator is a fluorescence induced by radiation
Implementation Method 3
fabricating a tubular template having a plurality of thin film oxidized metal tubes by processing an anodic treatment
Implementation Method 4
a reflective layer formed on the inner walls of the thin film oxidized metal tubes
Data Source
AI summary
An ordering structure scintillator of scintillator and fabrication method is disclosed. The ordering structure scintillator of scintillator comprises: a tubular template, which consists of a plurality of thin film oxidized metal tubes; a plurality of scintillators, filled in the thin film oxidized metal tubes; and a package layer, formed on the surface of the tubular template for protecting the tubular template. In addition, through the fabrication method, the ordering structure scintillator of scintillator can be made by anodic treatment and die casting technology with low cost and rapid production; moreover, the film oxidized metal tubes of the tubular template can be further manufactured to nano tubes by adjusting electrolyte composition, electrolysis voltage, and processing time of anodic treatment, and the aperture size, the thickness and the vessel density of the nano tube can be controlled and ranged from 10 nm to 500 nm, 0.1 μm to 1000 μm, and 108 to 1012 tube/cm2, respectively.