소성 과정에서 폴리스티렌 나노비드를 제거하면 SnO2 나노돔 내부 표면에 Au 박막이 부착되면서 동시에 Au 나노입자로 응집된다.
When the polystyrene nanobeads were removed during the calcination, the Au film was attached to the inner surface of SnO2 nanodomes and simultaneously agglomerated to Au nanoparticles.