[19p-E302-1~8] Advanced ion microscopy? Application for future nano scale materials and devices

▲ [19p-E302-5] Helium Ion Beam Milling Patterned Suspended Graphene Double Quantum Dots

〇(DC)WANG Zhongwang¹, Manoharan Muruganathan¹, Marek Edward Schmidt¹, Yukinori Morita², Shinichi Ogawa², Hiroshi Mizuta^1,3 (1.JAIST, 2.AIST, 3.Hitachi Cambridge)

Keywords:Suspended Nanostructure, Helium Ion Beam Milling

We present a procedure for the fabrication of suspended graphene double quantum dots using helium ion beam milling technique (HIBM). A relatively large suspended graphene nanoribbon was prefabricated through conventional NEMs fabrication process. Importantly, seven electrodes were attached on it that pulled the nanoribbon and protected it from deformation during the substrate etching process. Thereafter, HIBM has carried out to pattern the small double dots structure. Importantly, the structure was suspended after HIBM. We envisage that this method can be utilized to patterning other two-dimensional materials for other NEMS, MEMS applications, such as coupled mechanical resonator-quantum dot.