Molecular Vibration Spectrum Analysis Using Ising Optimization
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Solution Overview
Problem
Existing methods struggle to efficiently extract detailed molecular structure information from molecular vibration spectra, particularly in the fingerprint region, due to the complexity of functional group identification and the ubiquity of C—H bonds.
Innovation Solution
Applying a combinatorial optimization technique using the Ising model to analyze molecular vibration spectra, enabling the extraction of molecular structure information by aligning organic molecules based on similarity and predetermined properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional molecular vibration spectra analysis methods are used, then analysis of molecular structures can be performed, but additional analysis techniques are required and information extraction efficiency is low
Solution Approach 1:
The patent combines multiple analysis functions (fingerprint region analysis, diagnostic region analysis, and molecular structure determination) into a single integrated molecular vibration spectra analysis system using the Ising model, eliminating the need for separate analysis techniques and reducing information loss
Solution Approach 2:
The Ising model-based analysis system performs multiple functions simultaneously: it analyzes both the fingerprint region (600-1500 cm⁻¹) and diagnostic region (1500-4000 cm⁻¹), determines molecular structures, and identifies functional groups within a single unified framework, improving information extraction efficiency while reducing the need for additional analysis techniques
2Measurement precision
If the fingerprint region (600-1500 cm⁻¹) is analyzed, then molecular structure identification is possible, but the complex pattern makes it difficult to distinguish functional groups
Solution Approach 1:
The patent divides the molecular vibration spectrum into two distinct regions: the fingerprint region (600-1500 cm⁻¹) for molecular structure identification and the diagnostic region (1500-4000 cm⁻¹) for functional group detection. The Ising model analyzes each region's contribution separately, allowing precise molecular structure identification while simultaneously detecting functional groups by evaluating their individual spectral contributions
Solution Approach 2:
The Ising model transforms the complex spectral analysis problem into an optimization problem by defining an energy function that evaluates different molecular structure hypotheses. By changing the analysis parameter from direct spectral interpretation to energy minimization, the system can precisely identify molecular structures and detect functional groups even in the complex fingerprint region
3Productivity
If combinatorial optimization using the Ising model is applied, then molecular structure information can be extracted efficiently, but the analysis method becomes more complex
Solution Approach 1:
The Ising model-based system automatically performs molecular structure determination and functional group identification by self-evaluating different structural hypotheses through energy minimization. The system serves itself by internally comparing predicted spectra with observed spectra and iteratively refining structure proposals, achieving high analysis efficiency without requiring complex manual intervention or multiple separate analysis methods
Data Source
AI summary
To provide an analysis apparatus an analysis method, and an analysis program each adapted to extract information about the molecular structures from the molecular vibration spectra. An analysis device includes an acquisition unit configured to analyze, by applying a combinatorial optimization technique using the Ising model, a molecular vibration spectrum of each of a plurality of organic molecules including a plurality of first organic molecules and second organic molecule serving as a reference for analyzing a molecule structure of each of the plurality of the first organic molecules, and to acquire information about a molecular structure of each of the plurality of the first organic molecules.