Science News

Bending hairs and compliant microstructures make razor blades dull –

Close shave: electron microscope image of a razorblade cutting human hair. (Courtesy: Gianluca Roscioli/Tasan Group/MIT)
New insights into why a hard steel razor blade is dulled by cutting soft hairs have been gained by a trio of researchers at the Massachusetts Institute of Technology. Gianluca Roscioli, Seyedeh Mohadeseh Taheri-Mousavi and Cemal Cem Tasan did a series of experiments that recreate the shaving process and found that dulling is a result of microscopic variations in the structure…

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