However, although the ultrathin films and rubber sheets used in these devices adhere and conform well to the skin, their lack of breathability is deemed unsafe for long - term use: dermatological tests show the fine, stretchable materials prevent sweating and block airflow around the skin, causing irritation and inflammation, which ultimately could lead to lasting physiological and psychological effects. (sciencedaily.com)
A popular way of envisaging space - time is as a stretchy rubber sheet that deforms when a mass is placed on it, with the varying curvature analogous to the warping of space - time by gravity. (newscientist.com)
The group also evaluated the permeability, with water vapor, of the nanomesh conductor — along with those of other substrates like ultrathin plastic foil and a thin rubber sheet — and found that its porous mesh structure exhibited superior gas permeability compared to that of the other materials. (sciencedaily.com)