Nanotechnology confronts the 'bad hair day' tests new conditioner
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day lead to new products that treat hair from the inside. In the future he thinks his AFM techniques could be used to develop wearresistant nail polishes ...
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Nanotechnology confronts the 'bad hair day' tests new conditionerPage 1Nanotechnology confronts the 'bad hair day'tests new conditionerOhio State University researchers have just completed the first comprehensive study of human hairon the nanometer level. Image of hair used in the study. Special equipment enabled Bharat Bhushan and his colleagues to get an unprecedented closeup look at arogue's gallery of bad hair days from chemically overprocessed locks to curls kinked up by humidity.They used the techniques they developed to test a new hightech hair conditioner.Ultimately the same techniques could be used to improve lipstick nail polish and other beauty productssaid Bhushan Ohio Eminent Scholar and the Howard D. Winbigler Professor of mechanical engineering atOhio State .His specialty is nanotribology the measurement of very small things such as the friction between movingparts in microelectronics.At first hair seemed like an unlikely study subject he said. Then he was invited to give a lecture toscientists at Procter & Gamble Co.It turns out that for hair friction is a major issue he said. Everyday activities like washing dryingcombing and brushing all cause hairs to rub against objects and against each other he explained. Over timethe friction causes wear and tear two processes that he and his colleagues are very familiar with thoughthey're normally studying the wear between tiny motors and gears.We realized that beauty care was an emerging area for us and we should dive in Bhushan said.He consulted for the company until P&G became an industrial partner in his laboratory supplying him withsamples of healthy and damaged hair. The Ohio State engineers examined hairs under an atomic forcemicroscope (AFM) a tool that let them scratch the surface of hairs and probe inside the hair shaft with avery tiny needle. They published their results in the journal Ultramicroscopy in a paper now available onthe Web.Among their findings: hair conditioners typically do ...
Source: www.physorg.com
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