摘要
采用化学电沉积方法,通过控制沉积电压,电沉积时间等实验参量,确定出最优实验条件,在冰浴条件下,实验温度范围为0～2℃之间,在氧化铟锡导电薄膜表面沉积二维结构随机排列的纳米银树枝,并在银树枝表面涂覆一定厚度的绝缘薄膜聚乙烯醇后,与另外一层银树枝组装制作成银树枝/聚乙烯醇/银树枝复合结构.实验表明,参比样品在可见光波段400～750nm处没有透射峰的出现,而银树枝/聚乙烯醇/银树枝复合结构在此波段有多个透射通带峰,且在相应波长表现出了聚焦效应.
Random nanostructures of two-dimensional silver dendritic cells are prepared on the flexible Indium Tin Oxides film using the electrochemical deposition method at 0~2 ℃.The Polyvinyl Alcohol film,acted as a dielectric medium,is coated on the silver dendritic cells and combined with the uncoated cells face-to-face to fabricate a Ag/Polyvinyl Alcohol /Ag configuration.This dendritic nano-assembled Ag/Polyvinyl Alcohol/Ag configuration reveals a multiband resonance and different transmission peaks at optical frequencies,while the several contrast samples fail to show any transmission peaks at the same frequencies.The focused points are present when the wavelengths utilized are corresponding to the peaks of the transmission spectrum for the Ag/Polyvinyl Alcohol /Ag configuration.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2010年第7期1176-1180,共5页
Acta Photonica Sinica
基金
国家自然科学基金(50872113)资助
关键词
化学电沉积
柔性基底
随机排列
二维纳米银树枝
银树枝/聚乙烯醇/银树枝结构
Electrochemical deposition
Flexible substrate
Random array
Two-dimensional silver dendritic nanostructure
Ag/PVA/Ag configuration
