Zhang Yousheng, Wang Lisheng, Liu Xiaohua, Yan Yunjie, Chen Changqiang, Zhu Jing
Electron Microscopy Laboratory, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China.
J Phys Chem B. 2005 Jul 14;109(27):13091-3. doi: 10.1021/jp050851z.
Nano and micro ZnO rods and arrays have been synthesized by a simple thermal evaporation approach on a cylindrical shape substrate. Most of the synthesized ZnO products are single crystalline with a hexagonal structure and grow along the [0001] direction. Individual protrusive ZnO rods and well-aligned arrays are two typical products in our work. The individual protrusive ZnO rods have diameters of 25 nm approximately 2.1 microm and lengths from several hundred nanometers to 40 microm, while in the well-aligned arrays, the diameter and length of each ZnO rod range from 60 nm to 1.2 microm and from 4 microm to 6 microm, respectively. The heating temperature and deposition position are two key points to control the diameters of the rods. The growth mechanism is discussed and proposed. The perfect crystalline ZnO rods with different scales from nanometer to micrometer are good models for the investigation of the size effect of physical and chemical properties of one-dimensional material.
通过一种简单的热蒸发方法，在圆柱形衬底上合成了纳米和微米级的氧化锌棒及阵列。大多数合成的氧化锌产物为具有六方结构的单晶，并沿[0001]方向生长。单个突出的氧化锌棒和排列整齐的阵列是我们工作中的两种典型产物。单个突出的氧化锌棒直径约为25纳米至2.1微米，长度从几百纳米到40微米不等，而在排列整齐的阵列中，每个氧化锌棒的直径和长度分别在60纳米至1.2微米以及4微米至6微米范围内。加热温度和沉积位置是控制棒直径的两个关键点。对生长机制进行了讨论并提出。具有从纳米到微米不同尺度的完美结晶氧化锌棒是研究一维材料物理和化学性质尺寸效应的良好模型。
