HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Drop freezing: fine detection of contaminants by measuring the tip angle

Abstract : In this Letter, we show that the shape of a freezing drop of water can be sensitive to the presence of impurities. We measure the tip angle of water drops frozen on a cold plate. The fine changes in tip angle are robustly captured by our image analysis method, which shows a deviation from that of pure water in solutions with salt (NaCl), polymer (PEG) and surfactant (TTAB) starting at concentrations of $10^{-6}$, $10^{-4}$ and $10^{-6}$ M respectively. The method could be adapted into a portable water purity tester, but the work also highlights the complexity of water freezing as it is influenced by trace concentrations of impurities.
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02489383
Contributor : François Boulogne Connect in order to contact the contributor
Submitted on : Monday, February 24, 2020 - 2:17:01 PM
Last modification on : Tuesday, May 3, 2022 - 3:43:41 AM
Long-term archiving on: : Monday, May 25, 2020 - 5:37:08 PM

File

apl.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02489383, version 1

Citation

François Boulogne, Anniina Salonen. Drop freezing: fine detection of contaminants by measuring the tip angle. Applied Physics Letters, American Institute of Physics, 2020. ⟨hal-02489383⟩

Share

Metrics

Record views

44

Files downloads

28