Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 12723-12731 |
| Journal | ACS nano |
| Volume | 11 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 26 Dec 2017 |
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Pressure-Induced Melting of Confined Ice. / Sotthewes, Kai ; Bampoulis, Pantelis ; Zandvliet, Henricus J.W.; Lohse, Detlef ; Poelsema, B.
In: ACS nano, Vol. 11, No. 12, 26.12.2017, p. 12723-12731.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Pressure-Induced Melting of Confined Ice
AU - Sotthewes, Kai
AU - Bampoulis, Pantelis
AU - Zandvliet, Henricus J.W.
AU - Lohse, Detlef
AU - Poelsema, B.
N1 - Open Access
PY - 2017/12/26
Y1 - 2017/12/26
N2 - The classic regelation experiment of Thomson in the 1850s deals with cutting an ice cube, followed by refreezing. The cutting was attributed to pressure-induced melting but has been challenged continuously, and only lately consensus emerged by understanding that compression shortens the O:H nonbond and lengthens the H–O bond simultaneously. This H–O elongation leads to energy loss and lowers the melting point. The hot debate survived well over 150 years, mainly due to a poorly defined heat exchange with the environment in the experiment. In our current experiment, we achieved thermal isolation from the environment and studied the fully reversible ice–liquid water transition for water confined between graphene and muscovite mica. We observe a transition from two-dimensional (2D) ice into a quasi-liquid phase by applying a pressure exerted by an atomic force microscopy tip. At room temperature, the critical pressure amounts to about 6 GPa. The transition is completely reversible: refreezing occurs when the applied pressure is lifted. The critical pressure to melt the 2D ice decreases with temperature, and we measured the phase coexistence line between 293 and 333 K. From a Clausius–Clapeyron analysis, we determine the latent heat of fusion of two-dimensional ice at 0.15 eV/molecule, being twice as large as that of bulk ice.
AB - The classic regelation experiment of Thomson in the 1850s deals with cutting an ice cube, followed by refreezing. The cutting was attributed to pressure-induced melting but has been challenged continuously, and only lately consensus emerged by understanding that compression shortens the O:H nonbond and lengthens the H–O bond simultaneously. This H–O elongation leads to energy loss and lowers the melting point. The hot debate survived well over 150 years, mainly due to a poorly defined heat exchange with the environment in the experiment. In our current experiment, we achieved thermal isolation from the environment and studied the fully reversible ice–liquid water transition for water confined between graphene and muscovite mica. We observe a transition from two-dimensional (2D) ice into a quasi-liquid phase by applying a pressure exerted by an atomic force microscopy tip. At room temperature, the critical pressure amounts to about 6 GPa. The transition is completely reversible: refreezing occurs when the applied pressure is lifted. The critical pressure to melt the 2D ice decreases with temperature, and we measured the phase coexistence line between 293 and 333 K. From a Clausius–Clapeyron analysis, we determine the latent heat of fusion of two-dimensional ice at 0.15 eV/molecule, being twice as large as that of bulk ice.
U2 - 10.1021/acsnano.7b07472
DO - 10.1021/acsnano.7b07472
M3 - Article
VL - 11
SP - 12723
EP - 12731
JO - ACS nano
JF - ACS nano
SN - 1936-0851
IS - 12
ER -