Scanning Probe Microscope Protective Mat for Fluid Spill Management
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Solution Overview
Problem
Scanning probe microscopes face damage from fluid spills during specimen scanning and container removal, as previous protective measures fail to prevent droplet collection and mat detachment, leading to fluid exposure on sensitive components.
Innovation Solution
A ring-shaped protective mat is installed around the carrying stage, capable of absorbing fluids and securely attaching to the stage to prevent spills and mat detachment, constructed with a water-absorbent fiber layer and polyethylene layer for effective fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective sheet made of fluid-repellent material is used, then the piezo scanner is protected from fluid damage, but fluid droplets collect on the protective sheet surface and can spill onto the scanner when the sheet is removed
Solution Approach 1:
The protective mat is made of porous absorbent material that absorbs fluid droplets through capillary action, preventing droplet accumulation on the surface. The porous structure allows the material to take in and hold fluid, eliminating the harmful effect of droplet collection that occurs with non-porous fluid-repellent materials.
Solution Approach 2:
The protective mat combines multiple material properties: an absorbent porous layer for fluid absorption, a reinforcing layer for structural integrity, and a non-porous outer layer for fluid repellency. This composite structure allows the mat to absorb spills while maintaining surface stability and preventing droplet spillage during removal.
2Object-generated harmful factors
If the protective mat is made of absorbent material, then fluid spills are absorbed, but the mat may detach from the carrying stage during use
Solution Approach 1:
The protective mat is designed as a flexible thin film that can conform to the carrying stage surface. The flexibility allows it to maintain intimate contact with the stage while the adhesive layer provides secure attachment, preventing detachment during use while still allowing the mat to absorb fluid spills effectively.
Solution Approach 2:
An adhesive layer is introduced as an intermediary between the protective mat and the carrying stage. This adhesive mediator provides strong bonding that prevents mat detachment during scanning operations, while not interfering with the mat's fluid absorption capability.
3Device complexity
If a simple protective sheet is used, then the structure remains simple, but it fails to prevent both fluid absorption and mat detachment
Solution Approach 1:
The protective mat is segmented into multiple functional layers, each performing a specific function: fluid absorption, structural reinforcement, and fluid repellency. This segmentation allows each layer to be optimized for its specific purpose while working together as an integrated protective system.
Solution Approach 2:
The protective mat is designed as a multi-functional component that simultaneously provides fluid absorption, structural support, fluid repellency, and secure attachment to the carrying stage. This universality allows a single component to address multiple protection requirements without requiring separate systems for each function.
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 effectively absorbs spills and prevents fluid exposure on the scanning means, ensuring the microscope's components remain undamaged during fluid handling and specimen container removal, with easy installation and replacement of the protective mat.
Implementation Method 1
A ring-shaped protective mat 50 is installed around the carrying stage 40, capable of absorbing the fluid 10
Implementation Method 2
constructed with a water-absorbent fiber layer and polyethylene layer for effective fluid management
Implementation Method 3
constructed with a water-absorbent fiber layer and polyethylene layer for effective fluid management
Data Source
AI summary
To provide a scanning probe microscope wherein the scanning means is not damaged by fluids, the scanning probe microscope 30 comprises a cantilever support part 2 for supporting a cantilever 1; displacement measurement parts 3, 4, 5 and 6 for measuring the displacement of the cantilever 1; a specimen container 11 comprising sidewalls 19 and bottom surface 18 and containing a fluid 10 and a specimen S; a carrying stage 40 on which the specimen container 11 is placed; and a scanning means 7 for moving and scanning the carrying stage 40. While the cantilever 1 is immersed in the fluid 10 that is contained in the specimen container 11, the carrying stage 40 is moved, and the displacement of the cantilever 1 is measured. The scanning probe microscope 30 further comprises a ring-shaped protective mat 50 that is capable of absorbing the fluid 10. A mounting mechanism 43 is formed on the outer peripheral surface of the carrying stage 40 for removably attaching the protective mat 50 by its inner peripheral area.