Figure 3.

The subband energies vary with d at fixed r2. Electronic subband energy, E1l and E2lfor l = 0, 1, and 2, as a function shell thickness d of hollow nanosphere for outer radius r2 = 100 nm in (a) and r2 = 25 nm in (b). The inset in (b) shows the energy difference in different l states.

Xiao et al. Nanoscale Research Letters 2012 7:578   doi:10.1186/1556-276X-7-578
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