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相关概念视频

Colloidal precipitates01:09

Colloidal precipitates

615
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
615

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Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
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双块共聚合物图案保护通过银色集群增强加强.

Yusuf Bulut1,2, Benedikt Sochor1, Constantin Harder1,2

  • 1Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany. stephan.roth@desy.de.

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概括

双块共聚合物的自组装,如聚乙烯-块-聚-4-乙烯胺 (PS-b-P4VP) 创建了有序的模式. 这些图案上的银沉积产生了稳定,强化的结构,非常适合石版应用.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 聚合物科学 聚合物科学

背景情况:

  • 双块共聚物的自组装为复杂的纳米结构提供了一个简单的途径.
  • 聚乙烯块聚-4-烯 (PS-b-P4VP) 在表面形成有序的状结构.

研究的目的:

  • 通过在有序的PS-b-P4VP微粒层上沉积银来研究混合材料的制造.
  • 评估这些混合材料的结构性质和稳定性,用于石版应用.

主要方法:

  • 在表面上制造了有序的状PS-b-P4VP层.
  • 银 (Ag) 使用直流磁力电筒喷射沉积和高功率脉冲磁力电筒喷射沉积来沉积.
  • 使用场辐射扫描电子显微镜 (FESEM),原子力显微镜 (AFM) 和放牧发生小角度X射线散射 (GISAXS) 进行结构分析.

主要成果:

  • 银的沉积导致了具有有序结构的混合材料.
  • 水性后处理稳定了入银的模式.
  • 银集群加强了PS-b-P4VP的状结构.

结论:

  • 制造的Ag/PS-b-P4VP混合材料呈现出稳定,增强的图案.
  • 订序的状PS-b-P4VP层是适合银沉积的模板.
  • 这些混合材料显示出先进的光刻技术的巨大潜力.