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Mechanical Properties of Porous Silicon

  • Leigh Canham
Living reference work entry

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Abstract

Introducing nanoscale porosity into silicon dramatically lowers its stiffness and hardness in a tunable manner over a wide range. In this updated review, available data is collated on Young’s modulus and Vickers hardness as a function of porosity, layer morphology, and surface chemistry. There is little quantitative data on fracture toughness and strength, but theoretical work predicts that optimized nanocomposites could be very mechanically durable. The exceptional plasticity recorded for individual silicon nanowires is yet to be demonstrated in mesoporous silicon. A number of application areas are highlighted that rely heavily on the mechanical properties of porous silicon.

Keywords

Porous silicon Mechanical properties Youngs modulus Hardness Fracture toughness Yield strength 

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.School of Physics and AstronomyUniversity of BirminghamBirminghamUK

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