Lanzhou University

Lanzhou Institute of Chemical Physics, Cas

Yang Yang

Jianmin Chen

Hongxuan Li

Huidi Zhou

Hongyu Li

Dejuan Zhi

Yang Li

Meizhu Wang

Na Wang

Yiyao Liu

Yuejuan Pei

Meijuan Song

Xiaohong Liu

Li Ji

The present disclosure relates to a preparation method of a niobium diselenide (NbSe) film with ultra-low friction and low electrical noise under sliding electrical contact in vacuum. The method uses a direct current (DC) closed field magnetron sputtering method for preparation. Through process design of low deposition pressure and low sputtering energy, on one hand, a purity of an NbSesputtered product is kept, generation of interference phases such as NbSeis avoided, and electrical conductivity of the sputtered NbSefilm is greatly improved, and on the other hand, a nanocrystalline/amorphous superlattice composite structure is formed, and excellent mechanical and lubricating properties are achieved. Under sliding electrical contact in vacuum, compared with those of a common electroplated gold coating, a friction coefficient of the film is reduced to 0.02 from 0.25, a wear life is prolonged by at least 7 times, and the electrical noise is reduced by about 50%.

Preparation method of niobium diselenide film with ultra-low friction and low electrical noise under sliding electrical contact in vacuum

Disclosed is a fusion protein for &#x3b1;-Melanocyte stimulating hormone, the fusion protein containing a protein transduction domain (PTD), a human serum albumin (HSA) and an &#x3b1;-Melanocyte stimulating hormone (&#x3b1;-MSH). Also disclosed are a method for preparing the fusion protein and a use thereof for inhibiting or treating central nervous system inflammations.

Fusion protein for alpha-melanocyte stimulating hormone and preparation method and use thereof

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Gansu, China

Yang Yang