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  • A couple years ago, my lab created a technology that turns a variety of materials superhydrophilic.

  • Superhydrophilic means it actually attracts water. We actually turned the surface hydrophilic

  • to such a strong degree that water runs uphill against gravity. That technology can have

  • many applications on its own. After that, we started to work on the counterpart technology,

  • making surface to repel water or as we call it, hydrophobic. We have been working on creating

  • superhydrophobic material using a laser processing technique. What we see here is pretty interesting.

  • The water falls to wards the surface and is repelled and bounces off the surface. This

  • is achieved by creating a unique pattern of surface structures at micro and nano scales

  • with our laser processing technology and those structures are intrinsically part of the material’s surface.

  • Most of the hydrophobic surfaces available today rely on chemical coatings.

  • Our surface has many advantages over the coatings out there. First our surface has a much stronger

  • hydrophobic effect than the coatings and secondly, we don’t have to worry about coatings peeling

  • off and the surface degrading over time. Many people think of Teflon as a strong hydrophobic

  • material. However, if you want to get rid of water on a Teflon surface you have to tilt the

  • surface to about 70 degrees before the water starts to slide off slowly. Our surface requires

  • an extremely small angle, if at all, for water to slide off. I think there are many possible

  • applications for this new superhydrophobic surface. For instance, if a surface repels

  • water, you will also prevent icing on the surface, you will be anti-corrosive and there’s

  • sanitation applications as well. We wanted to create this superhydrophobic surface that

  • will not only repel water but also repels water containing a waste materials. We know

  • in many developing countries in the world, clean water is a scarce resource so if you

  • create a toilet instead of using a lot of water to flush the toilet, would require little

  • or no water but still stay clean and dry.

A couple years ago, my lab created a technology that turns a variety of materials superhydrophilic.


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B1 中級

レーザーを用いた超疎水性材料の創製 (Using Lasers to Create Super-hydrophobic Materials)

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    姚易辰 に公開 2021 年 01 月 14 日