(a) Schematic of the experimental apparatus. (b) Image of a single water droplet in the dual beam optical trap and its Mie scattering fringes.
Raman spectra of the OH stretching band of water at different temperatures.
Decomposition of the Raman spectrum, observed at T = 23.3 °C and −27.7 °C, into Gaussian components. Sum of the Gaussian components is represented by a red solid line.
Temperature dependence of the integrated intensity of each Gaussian component. I 1, I 2, I 3, I 4, and I 5 represent intensities of the 3050 cm−1, 3200 cm−1, 3400 cm−1, 3500 cm−1, and 3650 cm−1 components, respectively. Solid lines are just a guide to the eye.
van't Hoff plot derived from the integrated Raman intensities.
Temperature dependence of the isobaric heat capacity of liquid water calculated from the experimentally determined parameters according to Eq. (3). Data from emulsion measurements2 are shown as crosses.
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