Human Hair fiber
In a new study, UCSD researchers investigate why hair is incredibly strong and resistant to breaking. The findings could lead to the development of new materials for body armor and help cosmetic manufacturers create better hair care products. Hair has a strength: weight ratio comparable to steel. It can be stretched up to 1.5X its original length before breaking. They examined at the nanoscale level how a strand of human hair behaves when it is deformed, or stretched. Hair behaves differently depending on how fast or slow it is stretched. The faster hair is stretched, the stronger it is.
Hair consists of 2 main parts – the cortex: made up of parallel fibrils, and the matrix, with an amorphous structure...
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