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Soon, get even the last drop out from shampoo bottle!
1. Soon, get even the last drop
out from shampoo bottle!
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2. Contd…
Getting to the bottom of a shampoo bottle is never fun. Some of us let the bottle
sit upside down. Some of us add water, hoping the remaining shampoo will glide
out more easily. And some of us just give up and toss the old bottle.For Bharat
Bhushan and Philip S Brown, engineers at Ohio State University , the solution is a
bit more complex.
The scientists reported that they had created a plastic surface that can repel sticky
liquids like shampoo and oil.They also showed that this surface could work with
polypropylene, a cheap plastic used in packaging for a variety of consumer
products.
This new technology could have far-reaching applications, including finger
printresistant phone screens, car coatings, antimicrobial catheters and stain-
resistant fabrics, Dr Bhushan said.
Creating surfaces that can repel oil and shampoo is hard, and “this is the first time
someone's demonstrated that you can do it in a very cheap, very common plastic,“
said Gareth McKinley ,a professor of mechanical engineering at MIT.
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3. Contd…
Materials like shampoo and oil are hard to repel be and oil are hard to repel
because of surface tension. In a fluid with high surface tension such as water
or mercury, molecules want to stick to gether. It's the reason water beads
into droplets on a solid surface. But when a liquid with low surface tension
like shampoo meets a solid surface, its molecules want to spread apart and
stick to solid molecules rather than to one another. “If you've ever spilled
salad dressing on your tie or clothing, you're well aware that it just soaks in
and spreads immediately ,“ Dr McKinley said.
Surfaces that manage to repel liquids with low surface tension are called
superoleophobic, or highly oil-repellent, surfaces. Making such a surface
requires ingenuity . In particular, they must be created with two traits. First,
they need a particular “roughness“ that creates air pockets between the
solid surface and the oil droplets.Second, they require a chemical coating
with low surface energy .
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because of lack and improper healthcare facilities in India. We
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please contact us. Join us as a member for a noble cause.
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6. Contact us:- 011-25464531, 9818569476
E-mail:- nursingnursing@yahoo.in
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