Movable Clamping Sample Holder for TEM Grids
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Solution Overview
Problem
The existing method of fixing a fragile sample grid to a TEM rod is complex, time-consuming, and risky, posing a high risk of sample damage during the process.
Innovation Solution
A sample holder with a movable clamping member that can be easily opened and closed to securely attach and detach a sample carrier, such as a grid, to the holder body, allowing for fast and reliable mounting and reducing the risk of sample damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circular ring is used to fix the grid to the TEM rod, then the grid can be secured to the holder body, but the process becomes complex, time-consuming, and risky for the fragile sample
Solution Approach 1:
The fixing mechanism is segmented into a separate movable clamping member that can be independently actuated, rather than requiring a complex circular ring structure. This segmentation allows the grid to be secured through a simple clamping action that is easier to control and less risky for fragile samples.
Solution Approach 2:
The clamping member is made movable between open and closed positions, allowing dynamic adjustment during the attachment process. This dynamic capability enables operators to safely load the grid when open, then securely clamp it when closed, resolving the contradiction between secure attachment and process complexity.
2Reliability
If a circular ring is used to fix the grid to the TEM rod, then the grid can be secured to the holder body, but the process takes a lot of time and expertise
Solution Approach 1:
The movable clamping member enables a quick transition between open and closed states, dramatically reducing the time required for grid attachment. The simple linear motion of the clamping member is much faster to execute than positioning and securing a circular ring, thus resolving the time loss issue while maintaining secure attachment.
Solution Approach 2:
The clamping member is designed to self-engage with the grid and holder body through its movable action, reducing the need for expert manipulation. The inherent mechanical design guides the attachment process, making it less time-consuming and requiring less specialized expertise.
3Reliability
If a circular ring is used to fix the grid to the TEM rod, then the grid can be secured to the holder body, but the sample is always subjected to the danger of being damaged
Solution Approach 1:
The movable clamping member allows the attachment process to be performed in two distinct states: open for safe loading and closed for secure fixation. This dynamic approach eliminates the risk of damage during the attachment process, as the grid can be gently placed when the clamping member is open, then secured without applying force during the loading phase.
Solution Approach 2:
The clamping member is positioned in the open state before grid placement, allowing the grid to be loaded safely first. This preliminary positioning of the clamping member eliminates the risk of damage that would occur if the grid had to be forced into place under a closed ring structure.
Data Source
AI summary
The disclosure relates to a sample holder for a charged particle microscope, comprising a holder body with a recess for releasably receiving a sample carrier with a sample therein; and at least one fixing element that is connectable to said holder body for fixing said sample carrier in said recess of said holder body. As described herein, said fixing element comprises a clamping member that is movably connected to said holder body, wherein said clamping member is movable between a closed and an open position, wherein in the open position said sample carrier can be placed in said recess, and wherein in said closed position said sample carrier can be locked in said recess. With this, a more reliable mounting of a sample carrier onto the sample holder can be established.