Berlin 2018 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 65: Functional Materials (Actuators, filters, sensors, shape memory)

MM 65.1: Vortrag

Donnerstag, 15. März 2018, 17:30–17:45, H 0106

Thermosalient (’jumping’) crystals — •Ivor Lončarić¹, Jasminka Popović¹, Vito Despoja², and Željko Skoko² — ¹Ruđer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia — ²Department of Physics, Faculty of Science, University of Zagreb, Bijenička 32, HR-10000 Zagreb, Croatia

Thermosalient materials when heated or cooled are characterized by a fast and energetic phase transition in which crystals experience macroscopic change in dimensions and jump to distances much larger than their own dimension. Since the first systematic study [1], there has been a rising intrest for these interesting, and potentially useful, acutating materials. As a one example, N-2-propylidene-4-hydroxybenzohydrazide shows irreversible thermosalient phase transition from Form I to Form II and reversible thermosalient phase transition from Form II to Form III. We combine experiments and first-principles electronic structure calculations to elucidate this interesting and technologically useful phenomenon[2].

[1] Skoko et al., J. Am. Chem. Soc. 132, 14191 (2010)

[2] Lončarić et al., Cryst. Growth Des. 17(8), 4445-4453 (2017)