Silica-Shell SERS Structure for Biomarker-Free Disease Diagnosis
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Solution Overview
Problem
Existing SERS spectroscopy methods require specific biomarkers for effective detection of diseases like pancreatic cancer, which are lacking, and suffer from low reproducibility and convenience in distribution and storage.
Innovation Solution
A structure for SERS comprising a silica shell layer with nanoparticles containing a plasmonic metal core and shell, allowing non-specific binding of biomolecular materials, and a diagnostic system with a container unit and irradiation section to analyze SERS signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specific binding is used for SERS spectroscopy detection, then detection sensitivity is improved, but applicability to diseases without specific biomarkers deteriorates
Solution Approach 1:
The silica shell layer is designed to universally accommodate various biomolecular materials without requiring specific binding mechanisms. The shell provides a general platform that can detect different types of biomolecules (proteins, metabolites, nucleic acids) through non-specific interactions, enabling the SERS system to function across multiple disease types including those without known biomarkers
2Difficulty of detecting and measuring
If conventional SERS methods are used, then detection capability is achieved, but reproducibility deteriorates
Solution Approach 1:
The silica shell layer creates a controlled local environment around each nanoparticle, providing uniform spacing and consistent chemical properties. This local structuring ensures that SERS signals are generated under identical conditions for different measurements, significantly improving reproducibility while maintaining detection capability
Solution Approach 2:
The invention optimizes specific parameters including the silica shell thickness (5-50 nm), nanoparticle size (20-100 nm), and metal composition to achieve consistent SERS signal enhancement. By carefully controlling these parameters, the system achieves both high detection capability and reproducible results across multiple measurements
3Adaptability or versatility
If non-specific binding is enabled, then diagnostic versatility is improved, but signal specificity deteriorates
Solution Approach 1:
The diagnostic process is segmented into multiple stages: (1) non-specific capture of biomolecules by the silica shell, (2) SERS signal generation from accumulated molecules, and (3) pattern recognition analysis of the spectral data. This segmentation allows non-specific binding to be followed by sophisticated data analysis that recovers signal specificity through identification of disease-associated molecular patterns
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
Enables disease diagnosis without specific biomarkers, with high reproducibility and convenience in distribution and storage, providing accurate diagnostic signals for diseases like pancreatic cancer.
Implementation Method 1
Surface-enhanced Raman scattering (SERS) spectroscopy is designed to complement Raman scattering spectroscopy, which has weak signals and low reproducibility, and is spectroscopy using the phenomenon in which the Raman scattering intensity of molecules adsorbed on the surface of metal nanostructures, such as gold and silver, increases dramatically by 10^6
Implementation Method 2
a silica shell layer having an accommodation space therein and a nanoparticle including a plasmonic metal, wherein the nanoparticle is arranged in a region of the accommodation space in the silica shell layer
Data Source
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AI summary
The present disclosure relates to a structure for surface-enhanced Raman scattering spectroscopy, a method of preparing the same, and a diagnostic method using the same. According to the structure for surface-enhanced Raman scattering spectroscopy, the method of preparing the same, and the diagnostic method using the same, of the present disclosure, a structure for surface-enhanced Raman scattering spectroscopy and a method of preparing the same may be provided, which can be used even when biomarkers with excellent diagnostic performance among blood indicators do not exist, as in the case of intractable cancer, such as pancreatic cancer, and intractable diseases. Also, a diagnostic method and diagnostic system using surface-enhanced Raman scattering spectroscopy may be provided by using the structure for surface-enhanced Raman scattering spectroscopy.