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Ultra-high cooling rate utilizing thin film evaporation
Fengmin Su1, Hongbin Ma, Xu Han
1Institute of Marine Engineering and Thermal Science, Dalian Maritime University, Dalian 116026, China.
Applied Physics Letters
|October 25, 2012
Summary
This study presents a novel cell cryopreservation technique using thin film evaporation for ultra-high cooling rates. This method enables effective cell preservation with lower cryoprotectant concentrations.
Area of Science:
- Biotechnology
- Materials Science
- Cell Biology
Background:
- Cryopreservation is crucial for long-term cell storage.
- Achieving high cooling rates is essential for successful vitrification.
- Conventional methods often require high cryoprotectant concentrations, which can be toxic.
Purpose of the Study:
- To introduce a new cell cryopreservation method.
- To achieve ultra-high cooling rates using thin film evaporation.
- To enable cryopreservation with reduced cryoprotectant toxicity.
Main Methods:
- Fabrication of a microstructured surface using copper microparticles (average diameter 50 μm).
- Utilizing thin film evaporation for rapid cooling.
- Experimental validation of the cooling rate and temperature range.
Main Results:
- Achieved an ultra-high cooling rate of approximately 5 x 10^4 °C/min.
- Demonstrated effective cooling within the temperature range of 10 °C to -187 °C.
- Established a foundation for cryopreservation via vitrification with low cryoprotectant concentrations.
Conclusions:
- Thin film evaporation offers a promising approach for ultra-high cooling rates in cryopreservation.
- This method has the potential to reduce cryoprotectant toxicity.
- Further development could lead to improved cell preservation techniques.
