Figure 4.

Reflectance and transmittance characterization of the NAA rugate filters. (a) Reflectance and (b) transmittance spectra of NAA rugate filters anodized for 300 cycles, with an apodized sinusoidal current profile with a period time of T = 200 s.

Macias et al. Nanoscale Research Letters 2014 9:315   doi:10.1186/1556-276X-9-315
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