Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces
Abstract By performing icing experiments on hydrophilic and hydrophobic surfaces of pyroelectric amino acids and on the x‐cut faces of LiTaO 3 , we discovered that the effect of electrofreezing of super cooled water is triggered by ions of carbonic acid. During the cooling of the hydrophilic pyroele...
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crwiley:10.1002/anie.202006433 2024-06-02T08:05:10+00:00 Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces Curland, Sofia Javitt, Leah Weissbuch, Isabelle Ehre, David Lahav, Meir Lubomirsky, Igor Israel Science Foundation Minerva Foundation German-Israeli Foundation for Scientific Research and Development 2020 http://dx.doi.org/10.1002/anie.202006433 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fanie.202006433 https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.202006433 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/anie.202006433 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Angewandte Chemie International Edition volume 59, issue 36, page 15570-15574 ISSN 1433-7851 1521-3773 journal-article 2020 crwiley https://doi.org/10.1002/anie.202006433 2024-05-03T11:31:03Z Abstract By performing icing experiments on hydrophilic and hydrophobic surfaces of pyroelectric amino acids and on the x‐cut faces of LiTaO 3 , we discovered that the effect of electrofreezing of super cooled water is triggered by ions of carbonic acid. During the cooling of the hydrophilic pyroelectric crystals, a continuous water layer is created between the charged hemihedral faces, as confirmed by impedance measurements. As a result, a current of carbonic acid ions, produced by dissolved environmental CO 2 , flows through the wetted layer towards the hemihedral faces and elevates the icing temperature. This proposed mechanism is based on the following: (i) on hydrophilic surfaces, water with dissolved CO 2 (pH 4) freezes at higher temperatures than pure water of pH 7. (ii) In the absence of the ionic current, achieved by linking the two hemihedral faces of hydrophilic crystals by a conductive paint, water of the two pH levels freeze at the same temperature. (iii) On hydrophobic crystals with similar pyroelectric coefficients, where there is no continuous wetted layer, no electrofreezing effect is observed. Article in Journal/Newspaper Carbonic acid Wiley Online Library Angewandte Chemie International Edition 59 36 15570 15574 |
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Wiley Online Library |
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English |
description |
Abstract By performing icing experiments on hydrophilic and hydrophobic surfaces of pyroelectric amino acids and on the x‐cut faces of LiTaO 3 , we discovered that the effect of electrofreezing of super cooled water is triggered by ions of carbonic acid. During the cooling of the hydrophilic pyroelectric crystals, a continuous water layer is created between the charged hemihedral faces, as confirmed by impedance measurements. As a result, a current of carbonic acid ions, produced by dissolved environmental CO 2 , flows through the wetted layer towards the hemihedral faces and elevates the icing temperature. This proposed mechanism is based on the following: (i) on hydrophilic surfaces, water with dissolved CO 2 (pH 4) freezes at higher temperatures than pure water of pH 7. (ii) In the absence of the ionic current, achieved by linking the two hemihedral faces of hydrophilic crystals by a conductive paint, water of the two pH levels freeze at the same temperature. (iii) On hydrophobic crystals with similar pyroelectric coefficients, where there is no continuous wetted layer, no electrofreezing effect is observed. |
author2 |
Israel Science Foundation Minerva Foundation German-Israeli Foundation for Scientific Research and Development |
format |
Article in Journal/Newspaper |
author |
Curland, Sofia Javitt, Leah Weissbuch, Isabelle Ehre, David Lahav, Meir Lubomirsky, Igor |
spellingShingle |
Curland, Sofia Javitt, Leah Weissbuch, Isabelle Ehre, David Lahav, Meir Lubomirsky, Igor Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces |
author_facet |
Curland, Sofia Javitt, Leah Weissbuch, Isabelle Ehre, David Lahav, Meir Lubomirsky, Igor |
author_sort |
Curland, Sofia |
title |
Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces |
title_short |
Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces |
title_full |
Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces |
title_fullStr |
Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces |
title_full_unstemmed |
Heterogeneous Electrofreezing Triggered by CO 2 on Pyroelectric Crystals: Qualitatively Different Icing on Hydrophilic and Hydrophobic Surfaces |
title_sort |
heterogeneous electrofreezing triggered by co 2 on pyroelectric crystals: qualitatively different icing on hydrophilic and hydrophobic surfaces |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/anie.202006433 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fanie.202006433 https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.202006433 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/anie.202006433 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Angewandte Chemie International Edition volume 59, issue 36, page 15570-15574 ISSN 1433-7851 1521-3773 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/anie.202006433 |
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Angewandte Chemie International Edition |
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59 |
container_issue |
36 |
container_start_page |
15570 |
op_container_end_page |
15574 |
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1800749945948471296 |