Making crystals on demand by non-photochemical laser-induced nucleation

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Andy Alexander
Abstract: Nucleation is the starting point for the formation of a new phase of a substance, e.g., the formation of solid ice from liquid water. It occurs throughout nature, such as in the formation of clouds in the atmosphere, and biomineralization of bones and shel ls of animals. Nucleation also has tremendous economic significance in forming and processing high -value materials such as pharmaceuticals, pigments, and ingredients for food. But studying nucleation is incredibly difficult due to its stochastic nature: yo u generally don't get to control where and when it happens. In this talk we will introduce the effect of non -photochemical laser -induced nucleation, outline some of the mechanisms that have been proposed for the effect, and its possible applications. We wi ll draw comparisons with other well -known but poorly understood methods for nucleation by external perturbation, such as mechanical shock and irradiation by ultrasound. Download PDF

  • Venue

    Theatre C, Purdie

  • Date

    October 24, 2018

  • Time

    From: 15h30 To: 16h30

  • Sponsor

    University of St Andrews
    The oldest university in Scotland, with international renown for both research and education of undergraduates and postgraduates.

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