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Deconstructing biomineralization codes: a high throughput microfluidic material genome strategy for calcium carbonate
Hong He1, Chaoshan Zhao1, Junju Wang1
1Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), College of Optoelectronics Engineering, Chongqing University, Shapingba, Chongqing 400044, China.
A new microfluidic chip enables rapid screening of additives for controlling crystal shapes. This high-throughput crystallization screening (HTCS) platform accelerates the design of materials with desired morphologies, mimicking natural biomineralization processes.
Area of Science:
- Materials Science
- Chemical Engineering
- Biomineralization
Background:
- Material genomic engineering uses high-throughput screening to understand multicomponent effects on material properties.
- Biomineralization in organisms utilizes cooperative effects of multiple additives to regulate complex crystal morphologies.
- Rapid and large-scale additive screening is crucial for controlling biomineral morphology.
Purpose of the Study:
- To develop a high-throughput crystallization screening (HTCS) microfluidic chip for rapid additive screening.
- To investigate the effects of inorganic ions, small molecules, and macromolecules on CaCO3 crystallization.
- To simulate and understand biomineralization processes influenced by multiple components.
Main Methods:
- Development of a microfluidic chip utilizing PDMS thin films and ammonium carbonate for induced crystallization.
- Systematic selection of Mg2+, citrate, and poly (sodium styrenesulfonate) as representative additives.
- Induction of crystallization with controlled concentration gradients of single and combined additives.
Main Results:
- Morphological evolution showed continuous, regular transitions with single additive concentration gradients.
- Combined additives resulted in crystal morphologies that were superpositions of individual additive effects.
- The HTCS chip successfully guided CaCO3 crystallization towards desired morphologies.
Conclusions:
- The developed HTCS microfluidic chip is an effective tool for accelerated additive screening.
- The platform validates the morphological consistency between microfluidic and bulk systems.
- This approach optimizes synthesis protocols for biomimetic crystallization processes.
