Publications by year


Publications by Authors

Recent Publications


Contact Us

Head of Institute: Prof. Oren Froy

Administrative manager: Ms. Yael Fruchter

Office Address:
Institute of Biochemistry, Food Science and Nutrition,
Robert H. Smith Faculty of Agriculture, Food and Environment,
The Hebrew University of Jerusalem, 
P.O.Box 12, Rehovot 7610001, ISRAEL

Tel: +972 - (0)8-9489385
Fax: +972 - (0)8-9363208
Email Address:

Labyrinth ice pattern formation induced by near-infrared irradiation


Guy Preis, S. ; Chayet, H. ; Katz, A. ; Yashunsky, V. ; Kaner, A. ; Ullman, S. ; Braslavsky, I. Labyrinth ice pattern formation induced by near-infrared irradiation. Science Advances 2019, 5 eaav1598.

Date Published:



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.