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In-situ growth of silver nanostructure on quartz glass substrates
  • 期刊名称:J. Cent. South Univ.
  • 时间:0
  • 页码:312-318
  • 语言:英文
  • 分类:O614.122[理学—无机化学;理学—化学] TB383[一般工业技术—材料科学与工程]
  • 作者机构:[1]Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China, [2]School of Physical Science and Technology, Central South University, Changsha 410083, China, [3]Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • 相关基金:Projects(10804101, 60908023) supported by the National Natural Science Foundation of China; Project(2007CB815102) supported by the National Basic Research Program of China; Project(2007B08007) supported by the Science and Technology Development Foundation of Chinese Academy of Engineering Physics
  • 相关项目:复合金属团簇材料激光能量吸收与转换性质的研究
中文摘要:

石英玻璃底层的表面上的银 nanostructure 协议总数被小金种子与帮助综合 poly vinypyrrolidone (PVP ) 和荧光灯的照耀。银 nanostructure 的形成机制被建议。结果显示出那 PVP 和轻照耀是的关键在原处石英玻璃底层上的银 nanostructure 的生长。在 20 h 照耀展出不规则的形状以后,最后长大到 150 nm 的底层的银 nanostructure,和一些 nanoparticles 叠形成 bilayer。当粒子长大,一个新宽广乐队由于三角形的银 nanoplate 粒子的表面电浆子回声反应联合的 interparticle 偶极子偶极子出现在底层的吸收系列,红它转移 600800 nm。底层把一个排放乐队作为银 nanostructure 增加的平均尺寸在他们的荧光系列,和荧光紧张精神病医生上在 400 nm 集中了。重量的单位活跃的底层的最强壮的重量的单位信号在 16 h 以后被制作。

英文摘要:

Silver nanostructure compact aggregates on the surface of quartz glass substrates were synthesized by small gold seeds with the assistance of poly vinypyrrolidone (PVP) and irradiation of fluorescent lamp. The formation mechanism of silver nanostructure was proposed. The results show that both the PVP and the light irradiation are the keys to in-situ growth of silver nanostructure on quartz glass substrates. The silver nanostructure of the substrates which finally grow up to 150 nm after 20 h irradiation exhibits irregular shape, and some of nanoparticles stack to form bilayer. A new broad band appears in the absorption spectra of the substrates due to the interparticle dipole-dipole coupling of surface plasmon resonance response of the triangular silver nanoplate particles, which red shifts 600-800 nm as the particles grow up. The substrates have an emission band centered at 400 nm on their fluorescence spectra, and the fluorescence intensity shrinks as the average size of the silver nanostructure increases. The strongest SERS signal of SERS-active substrate is fabricated after 16 h.

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