Chalcogenide Glass Ink Printing for Crack-Free Sensor Films
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Solution Overview
Problem
Chalcogenide glass films formed through traditional vapor deposition processes are costly, time-intensive, and unsuitable for mass production, and additive printing methods often result in cracking and surface roughness, making them impractical for applications like radiation and temperature sensors.
Innovation Solution
A method involving printing chalcogenide glass ink comprising nanoparticles in a fluid medium, followed by sintering at a controlled temperature to remove the fluid and annealing at a higher temperature to harden the layer without cracking, maintaining the transmission spectrum and achieving an amorphous state suitable for sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vapor deposition processes are used to form chalcogenide glass films, then film quality and optical properties are maintained, but manufacturing cost increases and production time extends
Solution Approach 1:
The patent changes the material state from bulk chalcogenide glass to nanoparticles suspended in a fluid medium, enabling solution-based processing. This parameter change allows the use of low-cost printing methods instead of expensive vapor deposition, while maintaining film quality through controlled nanoparticle deposition and sintering processes
Solution Approach 2:
The patent replaces the mechanical vapor deposition system with a solution-based printing system. The chalcogenide glass is dissolved or dispersed in a fluid medium, allowing deposition through printing, spin-coating, or dip-coating methods, which are simpler and more scalable than vacuum deposition equipment
2Productivity
If additive printing methods are used to form chalcogenide glass layers, then manufacturing cost decreases and throughput increases, but cracking and surface roughness occur
Solution Approach 1:
The patent applies preliminary sintering treatment to the printed chalcogenide glass nanoparticle layer before final use. This sintering process removes the fluid medium, densifies the nanoparticle structure, and eliminates internal stresses that would cause cracking, thereby preventing reliability issues before they occur
Solution Approach 2:
The patent uses a composite structure of chalcogenide glass nanoparticles suspended in a fluid medium for printing, then transforms it into a dense sintered ceramic-like structure. This composite approach allows easy processing in the nanoparticle state while achieving crack-free dense structures after sintering
3Ease of manufacture
If additive printing methods are used to form chalcogenide glass layers, then manufacturing cost decreases, but surface roughness increases
Solution Approach 1:
The patent changes the surface morphology through controlled sintering parameters. By adjusting sintering temperature, time, and atmosphere, the nanoparticle layer transforms into a smooth, dense surface that meets optical quality requirements while maintaining the cost advantages of additive manufacturing
Solution Approach 2:
The patent employs a multi-stage thermal processing sequence: initial low-temperature sintering to remove the fluid medium, followed by higher-temperature sintering to densify and smooth the surface. This periodic thermal treatment achieves surface quality without requiring expensive precision printing equipment
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 enables the cost-effective, crack-free formation of chalcogenide glass layers with unchanged optical properties, suitable for radiation and temperature sensors that can measure across a wide temperature range and reversibly change electrical resistance in response to radiation or heat.
Implementation Method 1
sintering the chalcogenide glass layer at a first temperature for a first duration
Implementation Method 2
annealing the chalcogenide glass layer at a second temperature for a second duration
Implementation Method 3
sintering the chalcogenide glass layer at a first temperature for a first duration
Data Source
AI summary
A device formation method may include printing a chalcogenide glass ink onto a surface to form a chalcogenide glass layer, where the chalcogenide glass ink comprises chalcogenide glass and a fluid medium. The method may further include sintering the chalcogenide glass layer at a first temperature for a first duration. The method may also include annealing the chalcogenide glass layer at a second temperature for a second duration. A device may include a substrate and a printed chalcogenide glass layer on the substrate, where the printed chalcogenide glass layer includes annealed chalcogenide glass, and where the printed chalcogenide glass layer is free from cracks.