Crystalline Conversion Layer Manufacturing Device
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Solution Overview
Problem
Existing methods for manufacturing crystalline conversion layers for radiation detection, such as space-limited inverse temperature crystallization, lack control over solution distribution and temperature, leading to structural defects and limitations in achieving thick, high-quality layers with large surface areas necessary for accurate radiation detection.
Innovation Solution
A manufacturing device with a crystalline growth cavity, controlled inlet/outlet systems for the growth solution, and a temperature setting device to create a temperature profile, allowing for the free formation of crystalline conversion layers with thicknesses greater than 1 micrometer over large surfaces, ensuring precise control over solution distribution and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If space-limited inverse temperature crystallization is used to obtain thick crystalline conversion layers, then layer thickness can be increased, but temperature and solution distribution control is lost leading to structural defects
Solution Approach 1:
The device segments the crystallization process into distinct functional zones: a heating zone that supplies heat to create supersaturation, a crystallization zone where crystals form and grow, and a cooling zone that controls temperature gradients. This spatial segmentation allows each zone to be independently controlled, maintaining precise temperature and solution distribution control even while producing thick layers.
Solution Approach 2:
The invention transitions from two-dimensional plate-based crystallization to a three-dimensional flow-through reactor system. The solution flows continuously through the crystallization zone, allowing thick layers to form in the flow direction while maintaining controlled temperature and concentration gradients throughout the volume, thereby achieving both thickness and precision.
2Area of stationary object
If space-limited inverse temperature crystallization is used to obtain large surface area layers, then surface area can be increased, but uncontrolled growth leads to incompatible quality for radiation detection
Solution Approach 1:
The device establishes controlled nucleation conditions in advance within the crystallization zone, creating a uniform distribution of crystal nuclei before significant growth occurs. This preliminary controlled nucleation ensures that subsequent crystal growth across large surface areas maintains homogeneity and quality, as all crystals develop from controlled initial conditions rather than uncontrolled spontaneous nucleation.
Solution Approach 2:
The continuous flow of supersaturated solution through the crystallization zone ensures uninterrupted supply of building materials to all areas of the growing layer. This continuous action maintains uniform growth rates and crystal quality across large surface areas, preventing the defects that arise from batch processing or uncontrolled growth.
3Ease of manufacture
If conventional liquid deposition methods are used, then manufacturing simplicity is maintained, but layer thickness is limited to submicrometer or tens of micrometers
Solution Approach 1:
The device exploits the phase transition from supersaturated solution to crystalline solid in a controlled flow-through system. By maintaining supersaturation through continuous heating and flow, and controlling the crystallization zone conditions, thick crystalline layers can form directly from solution without requiring multiple deposition cycles or complex assembly, thus preserving manufacturing simplicity while achieving large thickness.
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
The solution enables the production of high-quality, thick crystalline conversion layers with controlled grain boundaries and orientations, enhancing the homogeneity and efficiency of radiation detection, particularly in medical and nuclear imaging applications.
Implementation Method 1
a temperature setting device creating a temperature profile in at least one element selected from the group comprising the crystalline growth cavity, the substrate and the first wall
Implementation Method 2
A known solution to obtain a crystalline conversion thick layer consists in using a supersaturated solution between two plates of a reactor in order to obtain the crystal growth
Data Source
AI summary
A device for fabricating a crystalline conversion layer from a growth solution, has a first wall and a substrate defining between them a crystalline growth cavity; a device for inlet/outlet of the solution controlling, over time, at least the supply or extraction of the growth solution to and from the crystalline growth cavity; a heating device creating a temperature profile in the crystalline growth cavity, the substrate or the first wall; the temperature profile controlling a free formation of the crystalline conversion layer over a thickness of greater than 1 micrometer, in a direction mainly transverse to forming face; the whole of the thickness of the crystalline conversion layer being obtained by the free formation of the crystalline conversion layer.