TEM Micro-Grid Cutting Apparatus with Deformation Segmentation
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Solution Overview
Problem
Conventional methods face difficulties in separating micro-grids from metal substrates without damaging them due to their small size and fragile structure, which is crucial for high-resolution transmission electron microscopy applications.
Innovation Solution
A cutting apparatus comprising a support, a cutting module, and a catching module is used to carefully separate micro-grids from the metal substrate by deforming the connections between the micro-grids and the substrate, allowing for precise cutting and catching of individual micro-grids without causing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional methods are used to separate micro-grids from metal substrate, then the separation process becomes simple, but the micro-grids are damaged due to their small size and fragile structure
Solution Approach 1:
The invention segments the metal substrate into individual micro-grids by introducing cutting grooves. The support structure is divided into multiple cutting modules, each responsible for cutting one micro-grid. This segmentation allows precise control over the separation process, enabling damage-free extraction of individual micro-grids from the substrate.
Solution Approach 2:
The invention performs preliminary actions by first positioning the metal substrate on the support, then moving cutting modules to precise locations above each micro-grid before executing the cutting. The catching modules are also positioned in advance to immediately capture the micro-grids after cutting. This preliminary positioning ensures that the fragile micro-grids are caught immediately after separation, preventing damage.
2Measurement precision
If the micro-grid size is reduced for high-resolution TEM applications, then the resolution capability is improved, but the difficulty of separation without damage increases
Solution Approach 1:
The invention replaces manual or simple mechanical separation methods with an automated cutting system. Cutting modules with precise positioning mechanisms move above each micro-grid and execute controlled cutting. Catching modules automatically capture the separated micro-grids. This mechanical automation substitutes for manual handling, enabling damage-free separation of extremely small micro-grids that would be impossible to handle manually.
Solution Approach 2:
The invention changes the physical parameters of the separation process by controlling the positioning precision of cutting modules to within micrometers and adjusting the catching mechanism to match the size of miniaturized micro-grids. These parameter changes enable the system to handle progressively smaller micro-grids while maintaining integrity, thus supporting higher resolution TEM applications.
3Reliability
If a cutting apparatus is introduced to separate micro-grids without damage, then the integrity of micro-grids is maintained, but the device complexity increases
Solution Approach 1:
The invention designs the support structure to serve multiple functions: it holds the metal substrate, positions multiple cutting modules, and supports catching modules. The cutting modules can be reused for multiple micro-grids, and the same support structure facilitates both cutting and catching operations. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity.
Solution Approach 2:
The invention merges the cutting and catching operations into a single integrated apparatus. The cutting modules and catching modules work in sequence on the same support structure, eliminating the need for separate transfer equipment. The support itself is designed to facilitate both operations, combining multiple functions into a unified system that maintains micro-grid integrity without excessive complexity.
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 method enables easy and damage-free separation of micro-grids from the metal substrate, facilitating their use in electron microscopy without compromising their integrity.
Implementation Method 1
by deforming the connections between the micro-grids and the substrate
Data Source
AI summary
An apparatus for cutting micro-grids from a metal substrate is provided. The apparatus includes a support and a cutting module. The support includes a supporting surface, the support is configured to support a micro-grid and the metal substrate. The cutting module includes a fixing element, a spring and a cutting structure. The fixing structure and the spring are located in the cutting structure. The fixing element is configured to fix the micro-grid on the supporting surface. The cutting structure is configured to cut the micro-grid from the metal substrate.