A process for preventing multiplication of a bacteria, virus, or fungus, via: embedding Cu+ and Cu+++ ions into a material； contacting the bacteria, virus, or fungus with the material； and diffusing the Cu+ and Cu+++ ions into a cell and thereby reducing a biological energy-producing ability of the cell, via creating an inhibitory protein molecular structure degrading a membrane anatomy of the cell, thus suffocating the cell, thus protecting a skin from infection and preventing multiplication of the bacteria, virus, or fungus. Also described is a process for sensing: a load, a strain, or a liquid, on a fabric, that includes forming the fabric comprising a multi-walled nanomaterial tube copper bio-sensor via: spacing apart from one another, rows of multi-walled nanofibers, the rows of multi-wall nanofibers comprising copper； and spacing a continuous filament apart from and disposed substantially perpendicular to the rows of multi-walled nanofibers.
