Materials scientists have developed a lightweight material that traps thermal energy when dry, but when the person starts sweating, opens a series of tiny vents to let heat escape and re-closes them to retain heat once they are dry again. Using physics rather than electronics to open the vents, the material has potential as a patch on various types of clothing to help keep the wearer comfortable in a wide range of situations.
from Latest Science News -- ScienceDaily https://ift.tt/3DWjRak
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