Phospahting coated WE43 magnesium alloy was prepared by an immersion method. The microstructure, corrosion resistance and biocompatibility of the coated alloy were investigated. Scanning electron microscopy （SEM） an...Phospahting coated WE43 magnesium alloy was prepared by an immersion method. The microstructure, corrosion resistance and biocompatibility of the coated alloy were investigated. Scanning electron microscopy （SEM） and X-ray diffraction （XRD） were used to examine the microstructure and the composition of the coated alloy. The corrosion resistance was studied by means of potentiodynamic polarization method and the biocompatibility of the surface modified WE43 alloy was evaluated by （3-（4,5）-Dimethylthiazol-2, yl）-2,5-diphenyltetrazolium bromide （MTT） and hemolysis test. The results show that the phosphating coating can enhance the corrosion resistance of WE43 alloy and can be a good candidate to increase the biocompatibility of WE43 alloy.展开更多
Objective:To study the characteristics of the intraocular lens using ion beam sputtering depositing titanium nitride thin film on the intraocular lens(IOLs).Methods:To deposite titanium nitride thin film on the top of...Objective:To study the characteristics of the intraocular lens using ion beam sputtering depositing titanium nitride thin film on the intraocular lens(IOLs).Methods:To deposite titanium nitride thin film on the top of intraocular lens by ion beam sputtering depositing.We analyzed the surface morphology of intraocular lens through SEM and AFM.We detected intraocular lens resolution through the measurement of intraocular lens.Biocompatibility of intraocular lens is preliminary evaluated in this test.Results:The surface morphology of intraocular lens material was not changed,and was in line with the requirements of smoothness.Resolution was in line with national requirements.Unmodified and modified IOLs's cytotoxicity were 1 and 0.6 grade respectively.Hemolytic rates of modified and unmodified were both less than 5%.Conclusion:Ion beam sputtering deposition of objects didn't only affect the surface morphology and the basic optical performance,but also can enhance the biocompatibility of intraocular lens.Ion beam sputtering deposition technique has provided new methods for the surface modification of IOLs and PMMA materials.展开更多
Ultrathin MnO_2 decorated hierarchical urchinlike FeOOH hollow micro-nanospheres have been designed and synthesized through a facile hydrothermal route.The microspheres are made of FeOOH nanofibers with a diameter of ...Ultrathin MnO_2 decorated hierarchical urchinlike FeOOH hollow micro-nanospheres have been designed and synthesized through a facile hydrothermal route.The microspheres are made of FeOOH nanofibers with a diameter of 10 nm.Due to the synergetic effect between the unique FeOOH hollow micro/nanostructures and ultrathin MnO_2 layer,the as-fabricated FeOOH@MnO_2 hybrid electrode exhibits a high specific capacitance of 1192 F g^（-1）at a current density of 1 A g^（-1）.It also reveals high rate capabilities and superior stability.Moreover,the asymmetric supercapacitor（ASC）assembled from the FeOOH@MnO_2 and the active carbon（AC）delivers a high energy density of 40.2 W h kg^（-1）at a power density of 0.78 kW kg^（-1）,and the energy density could remain 10.4 W h kg^（-1）under a condition of high power density of 11.7 kW kg^（-1）.展开更多
基金Project(2011AA030103) supported by the National High-tech Research Program of ChinaProject(201001C0104669453) supported by the Guangdong Innovation R&D Team Project,China
文摘Phospahting coated WE43 magnesium alloy was prepared by an immersion method. The microstructure, corrosion resistance and biocompatibility of the coated alloy were investigated. Scanning electron microscopy （SEM） and X-ray diffraction （XRD） were used to examine the microstructure and the composition of the coated alloy. The corrosion resistance was studied by means of potentiodynamic polarization method and the biocompatibility of the surface modified WE43 alloy was evaluated by （3-（4,5）-Dimethylthiazol-2, yl）-2,5-diphenyltetrazolium bromide （MTT） and hemolysis test. The results show that the phosphating coating can enhance the corrosion resistance of WE43 alloy and can be a good candidate to increase the biocompatibility of WE43 alloy.
文摘Objective:To study the characteristics of the intraocular lens using ion beam sputtering depositing titanium nitride thin film on the intraocular lens(IOLs).Methods:To deposite titanium nitride thin film on the top of intraocular lens by ion beam sputtering depositing.We analyzed the surface morphology of intraocular lens through SEM and AFM.We detected intraocular lens resolution through the measurement of intraocular lens.Biocompatibility of intraocular lens is preliminary evaluated in this test.Results:The surface morphology of intraocular lens material was not changed,and was in line with the requirements of smoothness.Resolution was in line with national requirements.Unmodified and modified IOLs's cytotoxicity were 1 and 0.6 grade respectively.Hemolytic rates of modified and unmodified were both less than 5%.Conclusion:Ion beam sputtering deposition of objects didn't only affect the surface morphology and the basic optical performance,but also can enhance the biocompatibility of intraocular lens.Ion beam sputtering deposition technique has provided new methods for the surface modification of IOLs and PMMA materials.
基金supported by the National Natural Science Foundation of China (21771137)Shandong Provincial Natural Science Foundation (ZR2016BM12)+1 种基金the Fundamental Research Funds for the Central Universities (15CX08010A)the starting-up fund from TJUT
文摘Ultrathin MnO_2 decorated hierarchical urchinlike FeOOH hollow micro-nanospheres have been designed and synthesized through a facile hydrothermal route.The microspheres are made of FeOOH nanofibers with a diameter of 10 nm.Due to the synergetic effect between the unique FeOOH hollow micro/nanostructures and ultrathin MnO_2 layer,the as-fabricated FeOOH@MnO_2 hybrid electrode exhibits a high specific capacitance of 1192 F g^（-1）at a current density of 1 A g^（-1）.It also reveals high rate capabilities and superior stability.Moreover,the asymmetric supercapacitor（ASC）assembled from the FeOOH@MnO_2 and the active carbon（AC）delivers a high energy density of 40.2 W h kg^（-1）at a power density of 0.78 kW kg^（-1）,and the energy density could remain 10.4 W h kg^（-1）under a condition of high power density of 11.7 kW kg^（-1）.
