Photo by L. Brian Stauffer; specimen (c) Field Museum of Natural History FMNH 11006 At an early age, we realize that sharp things hurt. Rose thorns, cactus spines, dog teeth, and fish bones all share ...

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Tasciotti and co-authors fabricated silicon nanoneedles by creating photolithographically defined cylindrical posts, making the silicon porous by metal-assisted chemical etching, and then reshaping ...

Researchers have created a model that can calculate the energetics involved when one organism stabs another with its fangs, thorns, spines or other puncturing parts. Because the model can be applied ...