公开(公告)号：US11572279B2

公开(公告)日：2023-02-07

申请号：US17752303

申请日：2022-05-24

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Tun Cao ,  Jingyuan Jia ,  Xinyue Zhang ,  Meng Lian ,  Ying Su

IPC: C01B32/186 ,  B05D1/00 ,  B05D3/06 ,  C01B25/02 ,  B82Y40/00 ,  C01G39/06 ,  B82Y30/00

Abstract: The present invention provides a two-dimensional material nanosheets with a large area and a controllable thickness and a general preparation method therefor. As an intralayer heat transfer coefficient of a two-dimensional material is much higher than an interlayer heat transfer coefficient thereof, the two-dimensional material is uniformly heated and sublimated layer by layer by controlling the energy of the laser pulses, a thinning thickness is controlled by adjusting the action time of the laser pulses, and finally, a two-dimensional material film with a controllable thickness is obtained. At the same time, a sample displacement stage moving freely in a two-dimensional plane space can realize preparation of the two-dimensional material film with a large area. Compared with traditional methods, the present invention can control a sample thickness of the two-dimensional material film, has a high generality, and is suitable for all kinds two-dimensional materials.