The difference of energies of Si atoms with single-crystalline, amorphous, free and nanoparticle configurationsY. L. Wang, Z. C. Deng, L. Z. Chu, G. S. Fu and Y. C. PengEPL, 86 1 (2009) 15001DOI: https://doi.org/10.1209/0295-5075/86/15001