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    • 4. 发明公开
    • SINGLE CRYSTAL DIAMOND MOVABLE STRUCTURE AND MANUFACTURING METHOD THEREOF
    • 单晶金刚石可动结构及其制造方法
    • EP2540877A1
    • 2013-01-02
    • EP11744760.7
    • 2011-02-18
    • National Institute for Materials Science
    • LIAO, MeiyongKOIDE, YasuoHISHIDA, Shunichi
    • C30B29/04B81B3/00B81C3/00B82B1/00C23C16/27G01Q70/16
    • C30B29/04B81C1/0015B81C2201/019C30B31/22
    • The utilization of single crystal diamond in a nano- or micro-machine (N/MEMS) device is difficult, and there has been no report on such utilization. The reason for this resides in that it is difficult to grow single crystal diamond on an oxide which is a sacrifice layer. In a conventional technique, a cantilever or the like is produced by forming polycrystalline diamond or nanodiamond on an oxide as a sacrifice layer, but the mechanical performance, vibration characteristics, stability, and reproducibility of the produced cantilever or the like are unsatisfactory. In the present invention, utilizing the fact that the high concentration ion-implanted region in a diamond substrate 101 is modified into graphite, the layer 104 modified into graphite as a sacrifice layer is removed by electrochemical etching to obtain the diamond layer remaining on the resultant substrate as a movable structure. The produced cantilever 106 exhibited high frequency resonance. The use of single crystal diamond makes it possible to improve the N/MEMS device in mechanical performance and stability as well as electric properties.
    • 在纳米或微机器(N / MEMS)器件中使用单晶金刚石是困难的,并且还没有关于这种利用的报道。 其原因在于,难以在作为牺牲层的氧化物上生长单晶金刚石。 在常规技术中,通过在氧化物上形成多晶金刚石或纳米金刚石作为牺牲层来制造悬臂梁等,但所制造的悬臂梁等的机械性能,振动特性,稳定性和再现性不令人满意。 在本发明中,利用金刚石基板101中的高浓度离子注入区被改性为石墨的事实,通过电化学蚀刻除去被改性为石墨作为牺牲层的层104,以获得残留在合成物上的金刚石层 衬底作为可移动结构。 所制造的悬臂106呈现高频共振。 使用单晶金刚石可以改善N / MEMS器件的机械性能和稳定性以及电性能。