Laser-Induced Oxidation of Copper for Stable CuxO Biosensors
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Solution Overview
Problem
Current methods for synthesizing copper oxide (CuxO) nanostructures for electrochemical sensing applications are inefficient, requiring complex processes, long processing times, and environmentally unfriendly chemicals, with limited studies on the effect of laser processing conditions on CuxO composition and micro/nano structure for enhanced electrochemical performance.
Innovation Solution
A scalable, one-step laser-induced oxidation (LIO) method using environmentally friendly conditions to form hierarchical CuxO nanostructures directly on a copper surface, where the laser beam provides energy for oxidation, creating cuprous oxide (Cu2O) and further oxidizing it to cupric oxide (CuO), with controlled growth and enhanced electrochemical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If traditional chemical synthesis and deposition techniques are used to create high-index facets structures, then catalytic activity is enhanced, but the structures become unstable and the preparation process becomes highly challenging
Solution Approach 1:
The patent changes the crystallographic parameters by synthesizing CuxO in low-index crystalline phases ((111), (110), and (100) facets) instead of high-index facets. This parameter change in crystal orientation provides both stability and enhanced catalytic activity through increased surface area in the form of micro/nano structures.
Solution Approach 2:
The patent transitions from two-dimensional flat surfaces to three-dimensional micro/nano structures, increasing the effective surface area while maintaining structural stability. This dimensional change allows the material to achieve high catalytic activity without relying on unstable high-index facets.
2Manufacturing precision
If complex synthesis processes are used to create CuxO nanostructures, then unique structures can be formed, but the processing time increases and environmentally friendly chemicals are not utilized
Solution Approach 1:
The patent replaces complex chemical synthesis mechanisms with a simple laser-induced oxidation process. The laser provides the necessary energy for oxidation without requiring complex chemical reagents or multi-step processes, achieving nanostructure formation in a single step with reduced processing time.
Solution Approach 2:
The patent employs self-assembly and self-organization of CuxO nanostructures during the laser-induced oxidation process. The system automatically forms the desired micro/nano structures through the oxidation of copper surfaces in ambient conditions, eliminating the need for complex external control mechanisms or additional processing steps.
3Ease of manufacture
If laser-induced oxidation is applied to Cu surfaces, then unique CuxO structures can be formed, but the effect of laser processing conditions on CuxO composition and electrochemical performance remains undemonstrated
Solution Approach 1:
The patent implements a systematic study where laser processing conditions (power, speed, passes) are varied and their effects on CuxO composition, micro/nano structure, and electrochemical performance are measured and correlated. This feedback loop allows optimization of processing parameters to achieve reliable electrochemical performance for biosensing applications.
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
This method enables the rapid fabrication of CuxO nanostructures with increased surface area and stability, demonstrating improved electrochemical performance and long-term sensitivity as a biosensor, with high sensitivity and stability maintained for glucose detection even after 50 days.
Implementation Method 1
fabricating an electroactive hierarchical CuxO structure directly onto the Cu surface by laser-induced oxidation (LIO), wherein the generated heat from the laser source provides energy for the oxidation of the Cu surface in the presence of atmospheric oxygen
Implementation Method 2
the generated heat from the laser source provides energy for the oxidation of the Cu surface
Data Source
AI summary
A method of manufacturing a copper oxide (CuxO) structure onto a Copper (Cu) surface by fabricating an electroactive hierarchical CuxO structure directly onto the Cu surface by laser-induced oxidation (LIO). The generated heat from the laser source provides energy for the oxidation of the Cu surface in the presence of atmospheric oxygen. The electroactive hierarchical CuxO structure is a binder-free nanotextured structure. The electroactive hierarchical CuxO structure may be used as a glucose sensor.