Figure 10.

(a) SEM micrograph of a photonic crystal prior to (a) and after (b) pyrolysis; (c) the period and line width initially were 500 nm and 295 nm, respectively, which were shrunk to 300 nm and 174 nm after pyrolysis (d); a change of ∼40%. The $period/width$ ratio stayed ∼1.7, indicating a homogeneous reduction in size.