Believe it or not – this intricate rose flower is thinner than a strand of human hair

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Harvard engineers created this tiny flower using a technique called “hierarchical microarchitectures”. The tiny but intricate plant shapes, such as vases, flowers, and leaves, begin with a glass plate dipped into a mixture of silicon and minerals (most importantly, barium chloride salts). As the solution solidifies, engineers make minor adjustments to the environment in order…

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