Amorphous Thin Film Transfer by Laser-Irradiated Multilayer Metals
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Solution Overview
Problem
Existing methods for producing amorphous metal thin films face challenges in achieving homogeneous composition and forming thick, defect-free layers due to difficulties in controlling melting temperatures and processing limitations.
Innovation Solution
A method involving the sequential deposition of a multilayered metal structure on a substrate, followed by laser irradiation to transfer an amorphous layer onto a second substrate, allowing for the formation of a homogeneous amorphous thin film with controlled composition and reduced crystallinity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If metals are dissolved in a molten metal to prepare bulk-type amorphous alloy, then amorphous metal can be obtained, but uniform composition control is difficult and crystal phases are partially produced
Solution Approach 1:
The metal layer is divided into multiple sub-layers with different compositions (first metal layer, second metal layer, third metal layer) that are sequentially deposited. This segmentation allows each layer to be controlled independently during deposition, ensuring uniform composition distribution and preventing crystal phase formation while maintaining the amorphous structure.
2Length of stationary object
If amorphous alloy is prepared by conventional methods, then amorphous structure can be obtained, but the alloy is not thick enough to be processed
Solution Approach 1:
The invention transitions from preparing bulk-type amorphous alloy to forming amorphous thin films through sequential deposition of multiple metal layers. This dimensional change enables the creation of thin films with controlled thickness that can be processed more easily while maintaining the amorphous structure through laser irradiation treatment.
3Ease of manufacture
If multilayered metal layer is irradiated with laser from the same side, then amorphous layer can be formed, but processing complexity increases
Solution Approach 1:
Instead of irradiating the multilayered metal layer from the same side where deposition occurred, the invention inverts the irradiation approach by irradiating from the opposite side. This simplifies the processing setup and enables easier formation of the amorphous layer while maintaining compositional uniformity across the thin film structure.
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 method enables the simple and effective formation of amorphous thin films with improved mechanical properties by reducing defects and surface roughness, while preventing the formation of crystal phases during the transfer process.
Implementation Method 1
forming an amorphous layer including the first metal, the second metal, and the third metal on the one surface of the second substrate by irradiating the first substrate with a laser
Implementation Method 2
irradiating the first substrate with a laser in a direction from the other surface to the one surface of the first substrate
Implementation Method 3
forming an amorphous layer including the first metal, the second metal, and the third metal on the one surface of the second substrate
Data Source
AI summary
The present invention relates to a method for forming an amorphous layer on one surface of a second substrate through a simple method of performing laser irradiation on a multilayered metal layer provided on a first substrate.