Note: A microfluidic freezer based on evaporative cooling of atomized aqueous microdroplets
Journal Article
·
· Review of Scientific Instruments
- Department of Mechanical Engineering, Myongji University, Yongin-si, Gyeonggi-do 449-728 (Korea, Republic of)
- Department of Chemical Engineering, Hongik University, Mapo-gu, Seoul 121-791 (Korea, Republic of)
We report for the first time water-based evaporative cooling integrated into a microfluidic chip for temperature control and freezing of biological solution. We opt for water as a nontoxic, effective refrigerant. Aqueous solutions are atomized in our device and evaporation of microdroplets under vacuum removes heat effectively. We achieve rapid cooling (−5.1 °C/s) and a low freezing temperature (−14.1 °C). Using this approach, we demonstrate freezing of deionized water and protein solution. Our simple, yet effective cooling device may improve many microfluidic applications currently relying on external power-hungry instruments for cooling and freezing.
- OSTI ID:
- 22392337
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 86; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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