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基于虚拟仪器技术实现了I-V曲线和微分电导的自动化测量系统。为了抑制噪声的影响,应用交流技术开发了有更高精度的锁相微分电导测量系统。实验数据的采集、处理和分析均采用Measurement Studio工具开发完成。系统测试的结果表明系统具有很高的精度和可靠性。展示了用本系统与纳米探针结合在扫描电子显微镜中原位测量单根碳纳米管的结果。
Based on the virtual instrument technology to achieve the I-V curve and differential conductance of the automated measurement system. In order to suppress the influence of noise, the application of AC technology to develop a more accurate phase-locked differential conductance measurement system. The acquisition, processing and analysis of experimental data were all developed using Measurement Studio tools. The results of the system test show that the system has high accuracy and reliability. The results of in-situ measurement of single-walled carbon nanotubes in a scanning electron microscope using this system in combination with a nano-probe are shown.