Shandong University

Yanshan University

Zhengkai Xu

Hongtao Zhu

Bin Zou

Hanlian Liu

Peng Yao

Longhua Xu

Shuiquan Huang

Dun Liu

Zhenyu Shi

Meina Qu

Zhen Wang

Chuanzhen Huang

Yabin Guan

Minting Wang

Jun Wang

Yunpeng Feng

Zhuang Chen

Zexin Li

Long Tian

An alumina-based ceramic tool material with low thermal expansion and a preparation process thereof, accordingly, the ceramic tool material may have both the high hardness of alumina ceramics after the hot pressing sintering, and reduces the thermal expansion coefficient of the overall ceramic material by adding the ScWOas the negative thermal expansion phase, which improves the thermal shock resistance of ceramic tools in high-speed cutting engineering and meets the requirements of large temperature range during the machining of nickel-based superalloys. Moreover, the composite material does not use metal binder and has strong thermal stability even in the high-speed machining under extreme heat-force-chemistry coupling, so it has a high machining compatibility for nickel-based superalloys.

Alumina-based ceramic tool material with low thermal expansion and preparation process thereof

A hydrogel for cell-laden bioprinting, bioink, and a preparation method and an application thereof, relates to the technical field of biomedical polymer hydrogels. The hydrogel for cell-laden bioprinting is polymer gel formed by adding a cell-specific material into a matrix of alginate and gelatin and crosslinking and curing, wherein the cell-specific material is polypeptide selected according to different laden cells. The structures printed using the hydrogel may have the advantages such as adjustable mechanical properties, adjustable porosity, high biocompatibility, high printing accuracy, and high customizability, which may widely support the printing of human tissues and organs such as spinal cord, cartilage, and heart, and has good prospects for applications in tissue repair, organ transplantation and so on.

Hydrogel for cell-laden bioprinting, bioink, and preparation method and application thereof

A method for preparing a shell-bionic ceramic tool and a shell-bionic ceramic tool, wherein the shell-bionic ceramic tool includes alternating stacks of ceramic powders with different components, pressing a ceramic green body using a cold briquetting method, carrying out pre-pressing once using a graphite indenter on a working surface thereof after each layer of the ceramic powder being loaded, and pressing a last layer using a graphite rod, and then pressing a whole ceramic green body with a certain pressure to promote a bonding of the layers of ceramic powder, which in turn gives a complex shape to an interface between the layers, increases a bonding area between the layers, and plays the role of hindering crack expansion, extending the crack expansion path, and improving the bonding strength of the interface; after then, hot-pressed sintering is used to densify the ceramic green body to obtain the shell-bionic ceramic tool.

Method for preparing shell-bionic ceramic tool and shell-bionic ceramic tool

A single-crystal &#x3b2;-GaOMSM detector and a preparation method thereof, comprising: machining grooves on a single-crystal &#x3b2;-GaOsubstrate using a laser-assisted waterjet machining technique to form a 3D shape; wet etching the machined single-crystal &#x3b2;-GaOsubstrate using an HF solution to remove machining damage; performing Au evaporation on a surface of the single-crystal &#x3b2;-GaOsubstrate after processing, coating an Au thin film on the surface of the single-crystal &#x3b2;-GaOsubstrate; and grinding the surface of the single-crystal &#x3b2;-GaOsubstrate after evaporation to remove the Au thin film on an undressed surface and retain the Au thin film in the grooves, and then obtaining the single-crystal &#x3b2;-GaOMSM detector.

Single-crystal beta-GaOMSM detector and preparation method thereof

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Qinhuangdao, China

Zhengkai Xu