Figure 1.

ξ/ξ ratio versus the αshape parameter for different sizes in both cases: a when materials properties are described by a Fermi–Dirac statistic and b when they are described by a Bose–Einstein one. When αshape is equal to 0 (vertical red line) or when ξ/ξ is equal to 1 (horizontal red line) then there is no size effect, and the material behaves as the bulk one. The solid,dashed and dotted blue lines indicate the behavior of the nanomaterials for different sizes D = 4, 10, 100 nm, respectively. The yellow region indicates the region where thermodynamics is no more valid

Guisbiers Nanoscale Research Letters 2010 5:1132-1136   doi:10.1007/s11671-010-9614-1