Glassy Nuclei in Amorphous Ice

1. Front Matter

   Pages I-XIII

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2. Introduction

   • Christina Maria Tonauer

   Pages 1-24

3. Methods

   • Christina Maria Tonauer

   Pages 25-28

4. Experimental section [167]

   • Christina Maria Tonauer

   Pages 29-56

5. Discussion [167]

   • Christina Maria Tonauer

   Pages 57-60

6. Summary [166]

   • Christina Maria Tonauer

   Pages 61-62

7. Back Matter

   Pages 63-76

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Christina Maria Tonauer finds novel evidence for the first-order nature of the transition between high-density amorphous ice (HDA) and low-density amorphous ice (LDA), supporting water’s liquid-liquid transition scenarios. Pressure-dependent crystallisation experiments of differently prepared expanded high-density amorphous ice samples (eHDA) and subsequent powder x-ray diffraction experiments disclose nucleation of LDA domains in bulk HDA, a typical feature of a first-order transition. The comparison of pressure-dependent crystallisation temperatures of eHDA samples with LDA nuclei and bulk LDA allows the estimation of the Laplace pressure and the size of a LDA nucleus.

• Amorphous Ice
• Water
• Polyamorphism
• Nucleation
• Two-Liquids Nature of Water
• Glassy Nuclei
• Liquid-Liquid Transition
• Crystalline and Amorphous Water Ices

• Institute of Physical Chemistry, University of Innsbruck, Innsbruck, Austria

  Christina Maria Tonauer

Christina Maria Tonauer is currently a doctoral candidate at the Institute of Physical Chemistry at the University of Innsbruck, Austria. The focus of her scientific interests is on the physico-chemical characteristics and the reactivity of crystalline and amorphous water ices.

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