Tag

Water Repellency

All articles tagged with #water repellency

science-and-technology1 year ago•3 min saved

Breakthrough in Water-Repellent Materials: Near-Perfect MOF Innovation

Researchers from Karlsruhe Institute of Technology and Indian Institute of Technology Guwahati have developed a new superhydrophobic material by modifying metal-organic frameworks (MOFs) with hydrocarbon chains. This innovative approach results in a water contact angle exceeding 160 degrees, making the material nearly completely water-repellent. The material's unique properties, attributed to a high-entropy state of the grafted chains, offer potential applications in self-cleaning surfaces for automobiles and architecture. The study was published in Materials Horizons.

via Phys.org|

#material-science #mofs #science-and-technology

science-and-technology2 years ago•5 min saved

Unveiling the Secrets of Drag on Partially Submerged Objects: Insights from Fluid Dynamics Researchers

Researchers at Brown University conducted a study on drag resistance by partially submerging spheres in a water stream. They found that drag on a partially submerged object can be several times greater than on a fully submerged object made of the same material. The drag increased as the spheres were lowered into the water, reaching its peak just before the sphere became fully submerged. Surprisingly, the sphere coated with a superhydrophobic material, which is highly water repellent, experienced more drag than the less water-repellent spheres. The findings shed light on the complex mechanics of drag on partially submerged objects and may have implications for designs operating at the air-water interface.

via Phys.org|

#drag-resistance #fluid-dynamics #partially-submerged-objects