Patterning: Nanopattern Fabrication of Gold on Hydrogels and Application to Tunable Photonic Crystal

1. Naonobu Shimamoto^1,2, 
2. Yoshito Tanaka²,
3. Hideyuki Mitomo^1,2, 
4. Ryuzo Kawamura¹,
5. Kuniharu Ijiro^1,2, 
6. Keiji Sasaki², 
7. Yoshihito Osada^1,*

Article first published online: 25 SEP 2012

DOI: 10.1002/adma.201290231

Nanopattern fabrication of metal dots on a water-swollen hydrogel is performed by transcribing metallic nanodots from a solid substrate to the hydrogel surface. This fabrication technique may stimulate advances in nanoscience using soft, wet matter, enabling development of new ion-based bio-related devices. Au nano-dots on a hydrogel can produce iridescent color, and its spectral response can be finely modulated by controlling the nanodot spacing, as reported by Yoshihito Osada and co-workers