External-stimulation-controllable-heat-storage-ceramics-ncomms8037-s6

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Supplementary Movie 5 Reversible pressure- and light-induced phase transition. This movie shows the pressure-induced phase transition from λ-Ti3O5 to β-Ti3O5 and light-induced phase transition from β-Ti3O5 to λ-Ti3O5. The initial part of this movie displays the pressure-induced phase transition from λ-Ti3O5 to β-Ti3O5, where the accumulated heat energy in λ-Ti3O5 is released (energy release process). Next, the pressure-produced β-Ti3O5 is irradiated with light and transforms to λ-Ti3O5, i.e., light-induced phase transition accompanying accumulation of heat energy (heat storage process). The release and accumulation of heat energy are caused repeatedly by alternating pressure application and light irradiation. Such a metal oxide is the first example.

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CC BY 4.0, as the Wikimedia Commons states it.

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Creative Commons Attribution 4.0

Credit

Tokoro H, Yoshikiyo M, Imoto K, Namai A, Nasu T, Nakagawa K, Ozaki N, Hakoe F, Tanaka K, Chiba K, Makiura R, Prassides K, Ohkoshi S

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