【摘 要】
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Achieving high elasticity for silicon (Si) nanowires,one of the most important and versatile building blocks in nanoelectronics,would enable their mechatron
【出 处】
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The 5th Asian Conference on Mechanics of Functional Material
论文部分内容阅读
Achieving high elasticity for silicon (Si) nanowires,one of the most important and versatile building blocks in nanoelectronics,would enable their mechatronics application in flexible electronics and bio-nano interfaces.In this work,by using our in situ nanomechanical testing platform,we measured the elastic mechanical properties of individual silicon (Si) nanowires with diameters of~100 nm by applying uniaxial tensile straining,and demonstrated that vapor-liquid-solid(VLS)-grown single-crystalline Si nanowires can be reversibly stretched to 10% or more elastic strain,approaching the theoretical limit of silicon.The ability to achieve this "deep ultra-strength" for Si nanowires can be attributed mainly to their pristine,defect-scarce,nanosized single-crystalline structure and atomically smooth surfaces.This extraordinary elasticity in Si nanowires,and presumably in other high-quality semiconductor nanowires,will also open the doors for the emerging field of "elastic strain engineering".
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