Impact Statement:In this work, we propose to use the well-known property of particles to form close-packed structures at the ice front during suspension freezing in order to increase the ...Show More
Abstract:
In this work, for the first time, the property of particles to form close-packed layer in front of the freezing interface was used to increase the luminescent efficiency ...Show MoreMetadata
Impact Statement:
In this work, we propose to use the well-known property of particles to form close-packed structures at the ice front during suspension freezing in order to increase the luminescent efficiency response. For our experiments we used water suspensions of ruby and titanium-sapphire microcrystals. We have also implemented a new geometry of freezing cell, allowing to form the small controlled volumes with a high concentration of luminescent particles. These investigations can be applied to increase efficiency of another nonlinear optical effects in particles suspension. We hope that these results will be useful and interesting for scientists and engineers engaged in research related to the study of the optical properties of colloidal suspensions. Our results can be used for spectroscopy, for control the formation dynamic of close-packed structures during suspension freezing and for sensing of phase transition.
Abstract:
In this work, for the first time, the property of particles to form close-packed layer in front of the freezing interface was used to increase the luminescent efficiency response for ruby and titanium-sapphire microcrystals water suspensions. An increase in the efficiency of luminescence response due to an increase in the concentration of particles at the freezing front, can be used for phase transition sensing. In addition, particles packing by freezing method can be used for tuning random laser generation or increasing the efficiency of different nonlinear optical effects in suspensions of particles.
Published in: IEEE Journal of Quantum Electronics ( Volume: 60, Issue: 2, April 2024)
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