Calibration Artifact for 3D Imaging Using Langmuir-Blodgett Films
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromagnetic radiation-based 3D imaging systems face challenges in accurately calibrating the optical and mechanical properties of calibration artifacts, particularly with soft polymer coatings like SU-8, which are difficult to control and may not match the optical properties of biological samples, leading to unreliable imaging results.
Innovation Solution
A calibration artifact with layers of Langmuir-Blodgett films (LBF) and highly ordered pyrolytic graphite (HOPG) is used, allowing for precise control of thickness profiles and optical properties closer to biological tissues, enabling accurate calibration and label-free imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a soft polymer coating (e.g., SU-8) is used on the calibration artifact, then the artifact can be manufactured with a desired thickness profile, but the formation of the soft polymer coating cannot be controlled with sufficient accuracy and the optical properties may not match biological samples
Solution Approach 1:
The patent changes the material parameter from soft polymer (SU-8) to hard support core material, fundamentally altering the controllable parameters. Hard materials allow precise thickness control through machining while maintaining stable optical properties that can be matched to biological samples, resolving the contradiction between manufacturability and measurement accuracy
Solution Approach 2:
The patent uses a composite structure combining a hard support core with a calibration layer. The hard support core provides mechanically stable thickness control, while the calibration layer (with known optical properties) enables accurate imaging calibration. This composite approach allows both precise thickness profile control and accurate optical calibration for biological sample imaging
2Ease of manufacture
If a hard support core with soft polymer coating is used, then the calibration artifact can be manufactured, but the optical properties may not be suitable for biological sample imaging
Solution Approach 1:
The patent changes the optical parameter of the calibration artifact by using materials with optical properties matched to biological samples. The hard support core with controlled refractive index and the calibration layer are selected to have optical characteristics similar to biological tissues, ensuring that calibration performed with this artifact translates accurately to biological sample imaging
Solution Approach 2:
The calibration artifact is designed to optically copy or mimic the properties of biological samples. By using materials with matched optical properties (refractive index, absorption, scattering), the artifact creates a faithful optical model that allows the imaging system to be calibrated for accurate biological sample measurement
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 provides a reliable and accurate calibration method for electromagnetic radiation-based 3D imaging, ensuring precise thickness control and optical properties matching biological samples, thereby enhancing the reliability and accuracy of imaging results.
Implementation Method 1
obtaining a calibration imaging result at least partly based on first electromagnetic waves received from a calibration artifact
Data Source
AI summary
A method for calibrating electromagnetic radiation-based three-dimensional imaging includes: obtaining (501) a calibration imaging result at least partly on the basis of electromagnetic waves received from a calibration artifact, forming (502) calibration data on the basis of the calibration imaging result and a known thickness profile of the calibration artifact, and correcting (503), with the aid of the calibration data, an imaging result obtained at least partly on the basis of electromagnetic waves received from a sample to be imaged. The calibration artifact includes layers, for example Langmuir-Blodgett films, having pre-determined thicknesses and stacked on each other so as to achieve the pre-determined thickness profile of the calibration artifact. A three-dimensional imaging system configured to carry out the method.