Janus\nAntipyretic\nPastes for Efficient, Durable and\nComfortable Personal Physical Cooling

Prompt and prolonged cooling is extremely\nimportant when\nthe body\nis in a fever state. Here, we proposed a concept of Janus antipyretic\npaste (JAP) with unique asymmetric wetting for effective and durable\npersonal physical cooling. The prepared JAP possesses greater one-way\ntransport capacity, and faster average water evaporation rate (∼2\ntimes) than the original fabric. Compared to the wet cotton fabric\n(a reduction of ∼2.9 °C) and medical antipyretic paste\n(MAP) (no cooling after 5 h), the JAP achieved the best cooling effect\nand long cooling duration (cooling by 3.8 °C, at least 5–7\nh) in practical application tests. In addition, the wearability of\nJAP is well validated, including its excellent breathability and good\nflexibility, which can maximum improve the comfort of our body. We\nbelieve the new JAP with superior cooling and comfort properties will\nprovide promising design guidelines for the next generation of family\nor hospital physical cooling products.