Nickel can be as strong as titanium and the density of water, according to a paper in Nature Scientific Reports. ‘High strength metallic wood from nanostructured nickel inverse opal materials‘ describes a material whose strength comes from nickel struts (as narrow as 17nm) whose local yield strength is 8GPa – 4x that of bulk nickel. According to ...
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from Electronics Weekly https://www.electronicsweekly.com/blogs/engineer-in-wonderland/self-assembling-nickle-foam-challenges-titanium-float-2019-02/
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