| 학회 |
한국재료학회 |
| 학술대회 |
2006년 봄 (05/19 ~ 05/20, 경상대학교 ) |
| 권호 |
12권 1호 |
| 발표분야 |
전자재료 |
| 제목 |
Optical Nanocomposite Films and Aerosol Deposition Method |
| 초록 |
Nanocomposite metal–dielectric systems have been considered for their interesting color effects in decorative applications, their adjustable electrical conductivity, and their dielectric properties in RF application. The surface plasmon resonance (SPR) of nanocomposite metal–dielectric films, which is of great interest in biomedical and optical applications, refers to the optical excitation of surface plasmons or charge-density waves at the interface between a metal and a dielectric. Aerosol deposition method (ADM) has been attracting much attention for the fabrication of complex oxide films with a high deposition rate and a low process temperature. In the report, we demonstrate the first fabrication of novel Au/PZT nanocomposite thick films by ADM and their optical properties of SPR. Composite metal-dielectric powders are prepared from submicron particles of PZT and nano particles of gold (10-40 nm) with concentrations of below 1 w%. The Au/PZT nanocomposite films with thicknesses of 2-10 μm by ADM were obtained with no cracks and good spatial distribution of the metal particles. Their SPR position shifts dramatically from 529 nm (as-deposited, dark red film) to 634 nm (annealed at 600`C /10 min, deep blue film) with increasing annealing temperature. It shows that this control of microstructure by annealing process allows one to select with high precision of the SPR band position by a size related shift. Moreover, we found that as-deposited nanocomposite films can show even enhanced SPR by changing a particle size of dielectric powder in ADM and SPR positions can be precisely tailored by adjusting a reflective index of dielectric matrix as well as a conductivity of nano sized metal. |
| 저자 |
Jae-Hyuk Park1, Jun Akedo2
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| 소속 |
1National Institute of Advanced Industrial Science and Technology (AIST), 2Japan |
| 키워드 |
aerosol deposition method; nanocomposite; surface plasmon resonance
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| E-Mail |
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