Flexible SERS Carrier for Irregular Surface Detection
Solution Overview
Problem
Current methods for single molecule detection using Raman spectroscopy are limited by the need for rigid substrates, which restrict real-time, in situ, or in vivo detection on irregular surfaces, as they require extracting molecules and cannot handle objects with anomalous shapes.
Innovation Solution
A flexible carrier with a substrate, middle layer, and metal layer is developed, featuring a patterned bulge structure that enhances surface plasmon resonance for improved Raman scattering, allowing detection on irregular surfaces using a carbon nanotube composite structure and metal layer deposition techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid substrate is used for single molecule detection, then the structural stability is improved, but the adaptability to irregular surfaces deteriorates
Solution Approach 1:
The patent employs a flexible substrate made of thin film material that can conform to irregular surfaces while maintaining structural integrity. This flexible substrate replaces traditional rigid substrates, enabling the detection system to adapt to complex geometries and anomalous shapes without compromising stability.
Solution Approach 2:
The substrate transitions from a static rigid structure to a dynamic flexible structure that can deform and adapt to different surface geometries. This dynamic characteristic allows the substrate to maintain contact with irregular surfaces while preserving its functional properties for molecule detection.
2Measurement precision
If a rigid substrate is used for single molecule detection, then the measurement precision is improved, but the ease of operation for real-time in situ detection deteriorates
Solution Approach 1:
The flexible substrate enables direct application to irregular surfaces in real-time scenarios, eliminating the need for complex sample preparation and molecule extraction procedures. This dramatically simplifies the operation while maintaining detection precision through the preserved SERS effect.
Solution Approach 2:
The flexible substrate is designed to be pre-formed with appropriate surface properties that facilitate direct molecule detection without requiring preliminary extraction or preparation steps, enabling immediate in situ detection.
3Manufacturing precision
If a rigid substrate is used for single molecule detection, then the manufacturing precision is improved, but the adaptability to objects with anomalous shapes deteriorates
Solution Approach 1:
The flexible substrate can be manufactured with precise control over its physical and chemical properties, then deformed to match anomalous shapes. This approach maintains manufacturing precision while achieving adaptability to complex geometries that rigid substrates cannot accommodate.
Solution Approach 2:
The substrate's physical parameters such as flexibility, thickness, and surface properties are optimized to enable both precise manufacturing and adaptation to various shapes. By controlling these parameters, the substrate can be precisely fabricated and then conform to anomalous object shapes.
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 real-time, in situ detection of single molecules on irregular surfaces with enhanced surface-enhanced Raman scattering, improving the sensitivity and flexibility of molecular detection systems.
Implementation Method 1
A flexible carrier with a substrate, middle layer, and metal layer is developed, featuring a patterned bulge structure that enhances surface plasmon resonance for improved Raman scattering
Implementation Method 2
A laser irradiation is supplied to the single molecule samples by a Raman detection system to cause a Raman scattering and produce a Raman spectroscopy
Data Source
AI summary
A method for detecting molecular is related. The method includes providing a sample, in which a sample surface is distributed with analyte molecules; providing a carrier including a substrate, a middle layer and a metal layer, in which the middle layer is sandwiched between the substrate and the metal layer, the middle layer includes a base and a patterned bulge on a surface of the base, the patterned bulge includes a plurality of strip-shaped bulges intersected with each other to form a net and define a number of holes, and the metal layer is on the patterned bulge; placing the carrier on the sample surface to make the metal layer being attached to the sample surface, in which parts of the analyte molecules are formed on the metal layer; detecting the analyte molecules on the metal layer with a detector.