Нанопокрытие из меди превратит сенсорные экраны в убийцы бактерий

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Нанопокрытие из меди превратит сенсорные экраны в убийцы бактерий

Сенсорные экраны смартфонов и планшетов справедливо считаются рассадниками бактерий, среди которых немало тех, что представляют опасность для людей. При этом человечеству уже давно известны антибактериальные свойства меди. Поэтому группа ученых Каталонского института перспективных исследований, Института фотонных наук (ICREA) и корпорации Corning разработала прозрачное наноструктурированное антибактериальное покрытие для сенсорных экранов на основе меди (TANCS).

Для его получения на подложку Gorilla Glass нанесли медную пленку толщиной 3,5 нанометра (3,5 х 10-6 мм). Далее была задействована технология термического отжига — пленку нагрели до температуры 390 ºC с последующей 10-минутной выдержкой и постепенным охлаждением. В результате сформировалось покрытие, в котором равномерно распределились наночастицы меди.

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Благодаря процедуре, покрытие стало прозрачным (как известно, медь непрозрачна), нейтральным по цвету, электропроводящим и, что особо важно — антибактериальным. Для дополнительной прочности и экологических соображений поверх покрытия было нанесено несколько слоев диоксида кремния (SiO2) и фторсиланов.

Последующие тесты показали, что TANCS за два часа убивает практически все оказавшиеся на нем бактерии золотистого стафилококка и при этом сохраняет свои антибактериальные свойства в течении двух лет при минимальном уходе — ежедневном двукратном протирании чистящими средствами.

20 КОММЕНТАРИИ

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