Sancho-Parramon Jordi, Abdolvand Amin, Podlipensky Alexander, Seifert Gerhard, Graener Heinrich, Syrowatka Frank
Department of Physics, Martin-Luther University, Hoher Weg 8, Halle D-06099, Germany.
Appl Opt. 2006 Dec 10;45(35):8874-81. doi: 10.1364/ao.45.008874.
It has been demonstrated recently that silver nanoparticles embedded in a glass matrix can be dissolved by the combination of an intense dc electric field and moderately elevated temperature. In an intermediate state of this process percolated silver layers inside the glass can also occur. These structural modifications significantly modify the optical behavior of the glass, suggesting an interesting perspective for the engineering of optical properties of this kind of metallodielectric materials. We present the optical characterization of silver-doped glasses subjected to the electric-field-assisted dissolution of nanoparticles. The characterization is performed by means of fitting spectrophotometric measurements. The optical properties of the investigated samples are described in terms of the interference between the light reflected from the glass surface and the light reflected from a buried silver-containing layer formed in the depths of the glass. The analysis of the data reveals a porosity of the glass in the region where the nanoparticles are dissolved that can be attributed to the presence of residual nanopores.
最近有研究表明，嵌入玻璃基质中的银纳米颗粒可通过强直流电场和适度升高的温度共同作用而溶解。在此过程的中间状态，玻璃内部还会出现渗滤的银层。这些结构变化显著改变了玻璃的光学行为，为这类金属介电材料的光学性能工程提供了有趣的前景。我们展示了经电场辅助纳米颗粒溶解处理的掺银玻璃的光学特性。该特性通过拟合分光光度测量来进行。所研究样品的光学性质是根据从玻璃表面反射的光与从玻璃深处形成的含银掩埋层反射的光之间的干涉来描述的。数据分析表明，在纳米颗粒溶解的区域玻璃存在孔隙率，这可归因于残留纳米孔的存在。
