Non-contact measurement module for serial sectioning
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Solution Overview
Problem
Current automated serial sectioning systems lack real-time monitoring and accurate measurement capabilities, leading to potential errors and inefficiencies in data collection during the serial sectioning process.
Innovation Solution
A measurement module that provides real-time differential measurements between a reference distance and a sample distance, using non-contact methods such as laser interferometry, to accurately monitor material removal rates and identify anomalies, integrated with a system including a polisher and analyzer module for precise three-dimensional reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If contact-based measurement methods are used to monitor material removal rates, then measurement capability is provided, but sample surface contamination occurs
Solution Approach 1:
The patent replaces contact-based mechanical measurement methods with non-contact optical measurement methods. Specifically, it uses optical interferometry to measure the position of the sample surface and calculate material removal rates, thereby eliminating mechanical contact that causes contamination while maintaining measurement precision
Solution Approach 2:
The patent introduces light as an intermediary medium to perform measurements. By using optical interferometry, the measurement beam acts as an intermediary that can detect surface position and material removal without physically touching the sample, thus preventing contamination while enabling precise measurement
2Measurement precision
If real-time monitoring is implemented during serial sectioning, then data accuracy is improved, but system complexity increases
Solution Approach 1:
The patent integrates multiple functions into a unified measurement system. The optical measurement system simultaneously performs surface position detection, material removal rate calculation, and anomaly detection, reducing the need for separate measurement devices and simplifying the overall system architecture while providing real-time monitoring
Solution Approach 2:
The patent implements real-time feedback by continuously monitoring the sample surface position during serial sectioning and immediately calculating material removal rates. This feedback mechanism allows for real-time detection of anomalies and adjustments, improving data accuracy without requiring complex post-processing systems
3Productivity
If automated serial sectioning is performed without real-time monitoring, then processing speed is maintained, but errors in data collection increase
Solution Approach 1:
The patent ensures continuous measurement and monitoring throughout the serial sectioning process. The optical measurement system operates continuously alongside the sectioning process, providing uninterrupted real-time data on material removal rates and surface position, thereby maintaining both productivity and reliability
Solution Approach 2:
The system uses real-time feedback from optical measurements to detect anomalies during automated serial sectioning. This feedback allows for immediate identification of errors while maintaining automated operation, ensuring data collection accuracy without compromising processing speed
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
Enhances data resolution and accuracy, minimizes errors, and allows for real-time monitoring of material removal rates, improving the overall efficiency and reliability of serial sectioning processes.
Implementation Method 1
employ a laser to measure a distance between the sensor head and a surface of the sample
Data Source
AI summary
The present invention relates to a metallographic system including a measurement module configured to provide precise differential measurements of a sample after serial sectioning, as well as methods of employing such a module. In particular example, the measurement module provides differential measurement(s) without contacting the surface of a sample, thereby minimizing contamination of the sample surface.