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利用激光驻波场会聚原子沉积纳米结构的技术可以用来研制纳米结构长度传递标准.当激光驻波场的频率大于原子的共振频率时,原子由于受到偶极力的作用将被会聚到驻波的波节处.采用了一种新的技术方案减小了实验对大的激光功率的要求.利用激光驻波场会聚准直性较好的Cr原子,并使其沉积在硅基片上形成纳米光栅结构.经原子力显微镜测试表明纳米光栅的周期为215nm.
The technique of convergent atom deposition of nanostructures using laser standing wave fields can be used to develop nanostructured length transfer standards. When the frequency of the laser standing wave field is greater than the resonant frequency of the atoms, the atoms will be converged to the standing wave due to the dipole force A new scheme was adopted to reduce the experiment requirement for large laser power.Using the laser standing wave field to converge the collimated Cr atom and deposit it on the silicon substrate to form the nanometer grating The structure of the nano-gratings showed that the period of the nanorod was 215nm.