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.

公开(公告)号：US11287400B2

公开(公告)日：2022-03-29

申请号：US16767019

申请日：2019-09-29

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Yongqing Wang ,  Haibo Liu ,  Te Li ,  Meng Lian ,  Kuo Liu ,  Zhenyuan Jia

IPC: G01N29/28 ,  G01N29/265

Abstract: A large-panel ultrasonic on-machine scanning thickness measurement equipment and method is disclosed. A GNCMT is adopted as the measuring machine main body on which a measured large panel is clamped and conducts scanning measurement motion; a non-contact ultrasonic measurement device is installed on the spindle of the machine tool for realizing transmission and acquisition of ultrasonic signals; a coupling liquid circulation system with the functions of multi-layer filtering, flow monitoring and regulation is set up; a jet flow immersion coupling mode is adopted on the surface of the measured large panel, and micro-emulsion cutting fluid is used as compatible coupling liquid of ultrasonic on-machine thickness measurement; and the coupling liquid is recycled, purified and stably supplied circularly. The thickness measurement equipment has high multi-function integration and reliable performance. It is easy to operate and highly automated, which effectively realizes nondestructive, accurate, efficient on-machine wall thickness measurement of the large panel.