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(a–d) Typical infrared images during cooling of water at t = 0, 500, 1000, and 1500 s, respectively. (e–h) Typical infrared images during freezing of the PCM, without any nanoinclusions, at t = 0, 500, 1000, and 1500 s, respectively. The pseudo-color-coded temperature scale is also shown along with the images.
