Cold atmospheric‐pressure plasma jet not only modifies surface morphology but also introduces functional groups on sample surfaces. In this work, TiO2 nanorods/carbon fiber (TNCF) is hydrothermally prepared, and hydrogen‐doped TNCF (H:TNCF) is obtained by the surface treatment of TNCF using cold atmospheric‐pressure Ar/H2 Plasma jet. H and OH spectral lines are observed from the emitting spectrum of atmospheric‐pressure Ar/H2 plasma jet. Nanoscaled protrusions appear at top of TiO2 nanorods after the surface treatment of cold atmospheric‐pressure Ar/H2 plasma jet. OH functional groups form on the surface of H:TNCF, based on the results of FTIR, Raman and XPS analysis. Furthermore, hydrogen doping can lower the band gap from 3.2 eV of TNCF to 2.9 eV of H:TNCF, and reduce the work function from 4.97 eV of TNCF to 4.71 eV of H:TNCF. Field emission property and cell compatibility of TNCF and H:TNCF are investigated. Field emission property of TNCF is considerably improved by hydrogen doping, due to a reduced work function and a higher field enhancement factor. In the cell attachment experiments, H:TNCF exhibits more attached cells with a larger cell attachment area, compared with the TNCF sample. The obtained results show H:TNCF prepared by hydrothermal method combined with cold atmospheric‐pressure Ar/H2 Plasma jet will be a promising candidate for field emission and biocompatibility applications.

This paper expounds the process and equipment characteristics of the narrowband hot-rolled steel intelligent production workshop, introduces the key intelligent model content, explains the application effect after the completion of the intelligent workshop transformation, and points out the research significance and development trend.