A general method for assembling single colloidal particle lines
A general method for assembling single colloidal particle lines
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DOI：
10.1021/nl060235u
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发表时间：
2006-03-01
期刊：
影响因子：
10.8
通讯作者：
Yang, PD
中科院分区：
文献类型：
--
作者：
Huang, JX;Tao, AR;Yang, PD
我们开发了一种将胶体颗粒组装成单颗粒厚度的一维线的通用方法。间隔良好的平行单粒子线可以通过水-基底接触线的粘滑运动从稀释的朗缪尔-布洛杰特粒子单层轻松沉积在基底上。线内的颗粒密度可通过单层中的颗粒浓度以及基材的牵引速度来控制。已经展示了多种材料和尺寸（从几纳米到几微米）的线条。多次沉积会产生复杂的图案，例如交叉线，甚至是不同颗粒的交叉线。将纳米颗粒放入一维阵列的能力使得能够构建更高层次的器件结构。例如，使用金纳米颗粒种子，可以生长硅的垂直单纳米线阵列，复制单颗粒线的图案。
We have developed a general method for assembling colloidal particles into one-dimensional lines of single particle thickness. Well-spaced, parallel single particle lines can be readily deposited on a substrate from a dilute Langmuir-Blodgett particle monolayer via a stick-slip motion of the water-substrate contact line. The particle density within the lines is controllable by the particle concentration in the monolayer as well as the pulling speed of the substrate. Lines of a great variety of materials and sizes, ranging from a few nanometers to a few micrometers, have been demonstrated. Multiple depositions create complex patterns such as cross lines, even of different particles. The ability of placing nanoparticles into one-dimensional arrays enables the construction of higher hierarchical device structures. For example, using gold nanoparticle seeds, vertical single nanowire arrays of silicon can be grown replicating the pattern of single particle lines.