Development of Ultrafast Scanning Calorimetry by the Liquid Drop Enhanced Cooling Method

ORAL

Abstract

Nitrogen or Helium gas as coolant in the ultrafast scanning calorimetry (UFSC) has the advantage of fast shift between programmed heating and cooling, but less effective for fast cooling when the sample temperature is close to the ambient temperature. Here we introduce the method of liquid drop enhanced cooling method that can break through the bottleneck arising from the ballistic cooling problem. We show here that after controlling the drop size, proper heating loop cuting, avoiding of Leidenfrost effect, the cooling rate reaches up to 105 Kelvin per second, i.e., about 4 orders of magnitude faster than cooling by gas at a 50K difference between the sample and the ambient temperature. This method opens even wider windows for the study of various liquid-solid or solid-liquid transformations.

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Presenters

  • Dongshan Zhou

    School of Chemistry and Chemical Engineering, Nanjing University, Nanjing Univ

Authors

  • Dongshan Zhou

    School of Chemistry and Chemical Engineering, Nanjing University, Nanjing Univ

  • Evgeny Zhuravlev

    Rostock University, Institute of Physics, University of Rostock, Institute of Physics, Rostock University

  • Jing Jiang

    School of Chemistry and Chemical Engineering, Nanjing University, Nanjing Univ

  • Bin Yang

    Institute of Physics, Rostock University

  • Christoph Schick

    Rostock University, Institute of Physics, University of Rostock, Institute of Physics, Rostock University, Butlerov Institute of Chemistry, Kazan Federal University

  • Shaochuan Luo

    Nanjing University, Nanjing Univ

  • Gi Xue

    Nanjing University, Nanjing Univ