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What is the strongest substance on Earth?

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Quick Answer

Although diamond is the strongest naturally occurring substance on Earth, as of 2013, science has developed a new form of carbon called carbyne that surpasses it. Carbyne's ability to withstand stretching surpasses any known substance. Comprised of carbon atoms held together by either alternating single and triple or double atomic bonds, carbyne's tensile strength is almost three times that of diamond.

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Full Answer

When a method is developed to produce the substance in bulk, carbyne will be the strongest in the new class of microscopic materials and could have a wide range of uses. The possibilities include its use in nanomechanical systems, in sensors, as an energy storage medium or as a strong and light material in mechanical applications.

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