Jun Lou (Photo by Jeff Fitlow/Rice University)
Jun Lou (Photo by Jeff Fitlow/Rice University) - 2D material resists cracking and description by century-old theory of fracture mechanics It's official: Hexagonal boron nitride (h-BN) is the iron man of 2D materials, so resistant to cracking that it defies a century-old theoretical description engineers still use to measure toughness. "What we observed in this material is remarkable,” said Rice University 's Jun Lou , co-corresponding author of a paper published this week. "Nobody expected to see this in 2D materials. That's why it's so exciting. Lou explains the significance of the discovery by comparing the fracture toughness of h-BN with that of its better-known cousin graphene. Structurally, graphene and h-BN are nearly identical. In each, atoms are arranged in a flat lattice of interconnecting hexagons.
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