Labyrinth ice pattern formation induced by near-infrared irradiation
| Autor: | Haim Chayet, Ido Braslavsky, Shlomit Guy Preis, Victor Yashunsky, Adam Katz, Avigail Kaner, Shimon Ullman |
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| Rok vydání: | 2018 |
| Předmět: |
Pattern formation
02 engineering and technology 01 natural sciences 010305 fluids & plasmas law.invention Physics::Fluid Dynamics law Phase (matter) 0103 physical sciences Irradiation Absorption (electromagnetic radiation) Nonlinear Sciences::Pattern Formation and Solitons Research Articles Physics::Atmospheric and Oceanic Physics Multidisciplinary Microchannel Ice crystals Physics SciAdv r-articles Condensed Matter Physics 021001 nanoscience & nanotechnology Laser Physics::History of Physics Condensed Matter::Soft Condensed Matter Superheating Chemical physics Astrophysics::Earth and Planetary Astrophysics 0210 nano-technology Research Article |
| Zdroj: | Science Advances |
| ISSN: | 2375-2548 |
| Popis: | High-power illumination of thin ice crystals drives the formation of dynamic holes and water microchannel labyrinths. Patterns are broad phenomena that relate to biology, chemistry, and physics. The dendritic growth of crystals is the most well-known ice pattern formation process. Tyndall figures are water-melting patterns that occur when ice absorbs light and becomes superheated. Here, we report a previously undescribed ice and water pattern formation process induced by near-infrared irradiation that heats one phase more than the other in a two-phase system. The pattern formed during the irradiation of ice crystals tens of micrometers thick in solution near equilibrium. Dynamic holes and a microchannel labyrinth then formed in specific regions and were characterized by a typical distance between melted points. We concluded that the differential absorption of water and ice was the driving force for the pattern formation. Heating ice by laser absorption might be useful in applications such as the cryopreservation of biological samples. |
| Databáze: | OpenAIRE |
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