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News
How to calculate hardness Mar 9
When it comes to measuring the "hardness" of a material, most tests are distinctly low-tech and basically involve pressing a diamond tip into the surface and measuring the size of the dent produced. Now, however, physicists in the Czech Republic have developed a new way to predict the hardness of materials without going anywhere near a lab. The results, obtained from first-principles calculations alone, agree well with experimental data and could help scientists make harder materials (Phys. Rev. Lett. 96 085501).
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