Nankai University

Tianjin Pipe (group) Corporation

Bin Shi

Wei Li

Jing Wang

Jun Zhang

Jingjun Xu

Yongfa Kong

Qiang Wu

Xinzheng Zhang

Zhiqian Xu

Irena Drevensek-Olenik

Xiaoqing Lu

Chunzhong Wang

Wei Cui

Long Yan

Tao Chen

Zhenhua Wang

Li Mei

The method for orientation of liquid crystals in a micro/nano region on the basis of laser direct writing and a system thereof includes a laser direct writing system employed to build a micro/nano structure. Liquid crystal molecules in a micro/nano structural region perform self-orientation; and the orientation of liquid crystals is generated by fine structures on side walls of polymer strips which form the micro/nano structure. The dimension of the micro/nano region varies from the micrometer magnitude to the nanometer magnitude exceeding the diffraction limit. The orientating direction can be adjusted and controlled in the micro/nano region, which is favorable for the miniaturization of the liquid crystal display devices and the orientation of the complicated three-dimensional liquid crystal structure.

Method for orientation of liquid crystals in micro/nano region on basis of laser direct writing and system thereof

A threaded connector including female thread and male thread. The female thread is symmetrically disposed on both ends of a coupling. The male thread is disposed at an end of a pipe. The female thread includes buttress thread. A torque shoulder is disposed in front of the buttress thread. The female thread is connected to the torque shoulder via a tool withdrawal groove. A protruding threaded segment is disposed on any one of a fourth to seventh tooth of the female thread to prevent high pressure gas from leaking.

Threaded connector

Growing community of inventors

Tianjin, China

Bin Shi