Advanced Materials Research Vol. 939

Abstract: The major purpose of this study is to investigate the effect of aluminum thin film overlaid on the phosphor layer. The aluminum film patterns consisted of intersecting lines or dotted structure. The results show that the aluminum thin film with patterns on the phosphor anode surface enable us to improve the life time of the phosphor and eliminates the charging-up effect on the phosphor layer of the field emission device. The emission current increases significantly, and after 5 minutes continuous emission, the phosphor brightness decrement can be restrained effectively in the demonstration.

Abstract: This study focused on the combination of atomic force microscopy (AFM) and quartz crystal microbalance (QCM) to construct the ultrasound assisted AFM base nanomachining experimental platform, and to construct the experimental planning of ultrasonic assisted nanomachining, to understand the phenomena of the ultrasound assisted AFM base nanomachining. Firstly, we combined the AFM and QCM to construct the ultrasound assisted AFM base nanomachining experimental platform. And a normal force measurement model was built by force curve measurements in ultrasound vibration environment. Next, the ultrasonic assisted nanomachining was carried out and aimed at brittle and ductile materials to probe into the influence of different experimental parameters such as probe speed, normal force and workpiece material on the cutting depth, width and chip stacking. After the experiments, it is succeeded in the ultrasound assisted AFM base nanomachining experimental platform in this study. And it can be found that the ultrasonic assisted nanomachining is possessed great influence on the cutting depth and width.