Bright Fiducial Mark for Microarray Spot Detection
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Solution Overview
Problem
Current microarray technologies face challenges in efficiently determining the location of thousands of spots on a substrate due to high density, requiring improved methods for analyzing optical data and identifying fiducial marks.
Innovation Solution
A substrate with a bright fiducial mark is designed, featuring a structure that reflects irradiated light more intensely than other areas, allowing for efficient identification and alignment of probe spots through enhanced optical data analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If probe materials are arranged at high density on the microarray substrate, then the number of detectable spots increases, but the difficulty of determining spot locations and analyzing optical data increases
Solution Approach 1:
A fiducial mark is introduced as an intermediary reference element on the microarray substrate. This fiducial mark serves as a mediator between the detection system and the densely packed probe spots, providing known reference coordinates that enable accurate localization of all spots through coordinate transformation, even when spots are arranged at high density
Solution Approach 2:
The invention creates a simplified reference copy of the microarray structure through the fiducial mark, which contains known positional information. This reference copy allows the detection system to establish coordinate mappings without needing to directly analyze every spot position, thereby simplifying the analysis of optical data from densely packed spots
2Measurement precision
If manual methods are used to determine spot locations, then accuracy may be maintained, but the time and labor required for analysis increases
Solution Approach 1:
The fiducial mark is pre-positioned on the substrate before probe immobilization, with its location and dimensions known in advance. This preliminary establishment of reference coordinates enables automated detection systems to quickly locate and map all spots without manual intervention, maintaining accuracy while dramatically reducing analysis time
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 bright fiducial mark enables precise location identification and data acquisition from microarrays, improving the efficiency of spot detection and analysis by providing a clear reference point for optical data processing.
Implementation Method 1
the fiducial mark has a structure which reflects irradiated light at a greater intensity than an intensity of reflected irradiated light from the area on the substrate not corresponding to the fiducial mark
Data Source
AI summary
A substrate includes; a fiducial mark disposed on the substrate, an area on the substrate on which a probe material is configured to be immobilized, the area being separated from the fiducial mark, and a probe immobilization compound disposed on the area on the substrate on which the probe material is configured to be immobilized, wherein the fiducial mark has a structure which reflects irradiated light at a greater intensity than an intensity of reflected irradiated light form the area on the substrate not corresponding to the fiducial mark.