**Author details**

Honggang Zhang1 , Haoyang Zhang1,2, Tianyu Guan1 , Xiangyu Wang1 and Nan Zhang1 \*

1 Centre of Micro/Nano Manufacturing Technology (MNMT-Dublin), School of Mechanical and Materials Engineering, University College Dublin, Dublin, Ireland

2 State Key Laboratory of Precision Measuring Technology and Instruments, Centre of Micro/Nano Manufacturing Technology (MNMT), Tianjin University, Tianjin, China

\*Address all correspondence to: nan.zhang@ucd.ie

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