Polymer-Coated Glass Substrate Surface Irregularity Control
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Solution Overview
Problem
Existing polymer-coated glass substrates face challenges in achieving a surface with controlled irregularity and low elastic modulus, which affects the capture of specific cells like cancer cells, often resulting in white turbidity and reduced capture efficiency.
Innovation Solution
A polymer-coated glass substrate with two or more hydrophilic polymer layers on its surface, controlling surface irregularity and elastic modulus to enhance the capture of specific cells, utilizing specific hydrophilic polymers and molecular weights to achieve low surface roughness and high flat smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single hydrophilic polymer layer is coated on the glass substrate, then the coating process is simple, but the surface irregularity cannot be controlled and white turbidity occurs
Solution Approach 1:
The single polymer layer is divided into multiple polymer layers with different molecular weights. The first layer uses a polymer with higher molecular weight to control surface irregularity, while the second layer uses a polymer with lower molecular weight to achieve desired surface properties, thereby solving the contradiction between manufacturing simplicity and surface precision
Solution Approach 2:
The invention uses composite polymer layers with different molecular weights coated on the glass substrate. This composite structure allows the first layer to control surface irregularity while the second layer provides the desired surface properties, resolving the contradiction between ease of manufacture and manufacturing precision
2Manufacturing precision
If the polymer layer is made thinner to reduce surface irregularity, then white turbidity is suppressed, but the capture efficiency of specific cells decreases
Solution Approach 1:
The total polymer thickness is segmented into two layers: the first layer is made thinner to suppress white turbidity and achieve flat smoothness, while the second layer compensates to maintain adequate capture efficiency. This segmentation allows both requirements to be satisfied simultaneously
Solution Approach 2:
The invention changes the molecular weight parameter of the polymer between layers. The first layer uses higher molecular weight polymer to provide sufficient thickness for capture efficiency with minimal thickness, while the second layer uses lower molecular weight polymer to fine-tune surface properties, thereby resolving the contradiction between surface flatness and capture efficiency
3Ease of manufacture
If a polymer with lower molecular weight is used, then the coating forms more easily, but the surface irregularity increases and capture efficiency decreases
Solution Approach 1:
The coating is segmented into two layers with different molecular weights. The first layer uses higher molecular weight polymer to control surface irregularity, while the second layer uses lower molecular weight polymer that forms more easily, thereby resolving the contradiction between ease of manufacture and surface precision
Data Source
AI summary
Provided is a polymer-coated glass substrate having a surface with controlled irregularity and a low elastic modulus. The polymer-coated glass substrate includes a glass substrate and two or more hydrophilic polymer layers on a surface of the glass substrate.