Yang Hu

Bio: Yang Hu is an academic researcher from Jilin University. The author has contributed to research in topics: Simulated body fluid & Ceramic. The author has an hindex of 2, co-authored 5 publications receiving 8 citations.

Fabrication of Sr-functionalized micro/nano-hierarchical structure ceramic coatings on 3D printing titanium

Abstract: Effective and fast osseointegration is significantly affected by the topographic features and chemical compositions of titanium (Ti)-based orthopedic implants. In this study, strontium (Sr) ions fu...

ZIF-8@antibacterial ionic coating prepared on surface of metal medical implant material and preparation method of ZIF-8@antibacterial ionic coating

Abstract: The invention discloses a ZIF-8@antibacterial ionic coating prepared on the surface of a metal medical implant material and a preparation method of the ZIF-8@antibacterial ionic coating, and belongs to the technical field of biological materials. Antibacterial ions (Sr , Mg , Ag and Cu ) and zeolite imidazolate framework structure materials (ZIFs) are effectively combined and successfully compounded on the surface of a metal medical implant material substrate. Due to the fact that the metal medical implant material substrate has good biocompatibility, the ZIF-8@antibacterial ion coating doped with the antibacterial ions is prepared on the surface of the metal medical implant material substrate, the advantages of the three components are successfully combined, and therefore, thecomposite material has the antibacterial effect while having relatively high biological activity. And the ZIF-8@antibacterial ionic coating prepared by the method is uniformly dispersed on the surface of the metal medical implant material, has good affinity with water, and is beneficial to adhesion of osteoblasts on the surface of the metal medical implant material. By changing the types of dopedatoms, the antibacterial effect of the material under specific conditions can be maximized, and human cells are not damaged.

Anodic TiO2 Nanotubes on 3D-Printed Titanium Meshes for Photocatalytic Applications.

Abstract: In this work, large 3D Ti meshes fabricated by direct ink writing were wirelessly anodized for the first time to prepare highly photocatalytically active TiO2 nanotube (TNT) layers. The use of bipolar electrochemistry enabled the fabrication of TNT layers within the 3D Ti meshes without the establishment of an electrical contact between Ti meshes and the potentiostat, confirming its unique ability and advantage for the synthesis of anodic structures on metallic substrates with a complex geometry. TNT layers with nanotube diameters of up to 110 nm and thicknesses of up to 3.3 μm were formed. The TNT-layer-modified 3D Ti meshes showed a superior performance for the photocatalytic degradation of methylene blue in comparison to TiO2-nanoparticle-decorated and nonanodized Ti meshes (with a thermal oxide layer), resulting in multiple increases in the dye degradation rate. The results presented here open new horizons for the employment of anodized 3D Ti meshes in various flow-through (photo)catalytic reactors.

High Precision 3D Printing for Micro to Nano Scale Biomedical and Electronic Devices

Abstract: Three dimensional printing (3DP), or additive manufacturing, is an exponentially growing process in the fabrication of various technologies with applications in sectors such as electronics, biomedical, pharmaceutical and tissue engineering. Micro and nano scale printing is encouraging the innovation of the aforementioned sectors, due to the ability to control design, material and chemical properties at a highly precise level, which is advantageous in creating a high surface area to volume ratio and altering the overall products’ mechanical and physical properties. In this review, micro/-nano printing technology, mainly related to lithography, inkjet and electrohydrodynamic (EHD) printing and their biomedical and electronic applications will be discussed. The current limitations to micro/-nano printing methods will be examined, covering the difficulty in achieving controlled structures at the miniscule micro and nano scale required for specific applications.

Preparation of robust, self-cleaning and anti-corrosion superhydrophobic Ca-P/chitosan (CS) composite coating on AZ31 magnesium alloy

Abstract: Magnesium (Mg) and its alloys are promising materials in the industrial and biomedical field, but the excessive corrosion rate limits their practical application. To improve the anti-corrosion property of Mg alloys, the composite coating composed of calcium phosphate (CaP) and chitosan (CS) was prepared on AZ31 Mg alloy via simple electrophoretic deposition and chemical conversion method. The water contact angle (WCA) of the composite coating was as high as 158.6° after being modified by stearic acid. Furthermore, a superhydrophobic single CaP coating with the WCA value of 158.5° was fabricated by a chemical conversion method and low energy modification. The superhydrophobic coatings exhibited good self-cleaning properties to prevent the pollution of different pollutants. Furthermore, the obtained superhydrophobic Ca-P/CS composite coating can withstand more times of tape-peeling because of its better bonding ability. Moreover, compared with the superhydrophobic single CaP coating, the composite coating can provide more effective protection to the AZ31 substrate in electrochemical measurements and immersion test. Therefore, the superhydrophobic Ca-P/CS composite coating with significant performance advantages can expand the application fields of Mg alloys.