The haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy was studied after surface heparinization. A layer of sol-gel TiO2 films was applied on the alloy samples followed by active treatment in the bio-functiona...The haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy was studied after surface heparinization. A layer of sol-gel TiO2 films was applied on the alloy samples followed by active treatment in the bio-functionalized solution for introducing the OH- and groups, and then the heparin was immobilized on the active TiO2 films through the electrostatic self assembly technology. It is shown that the heparinized films are mainly composed of anatase and rutile with smooth and dense surface. In vitro blood compatibility was evaluated by haemolysis test, clotting time and platelet adhesion behavior tests. The results show that the haemocompatibility of the alloy could be significantly improved by surface heparinization.展开更多
We demonstrate surface enhanced Raman scattering （SERS） detection of self-assembled nano silver film using a low-cost electrolysis strategy at a proper voltage and silver nitrate concentration in electrolyte. The co...We demonstrate surface enhanced Raman scattering （SERS） detection of self-assembled nano silver film using a low-cost electrolysis strategy at a proper voltage and silver nitrate concentration in electrolyte. The concentration dependence of SERS from crystal violet （CV） molecules adsorbed to silver film was systematically studied. Importantly, the SERS surface enhancement factor of such nano silver film was 603, which was measured by a portable Raman spectrometer. The minimum concentration of detectable CV molecules can be as low as 10^-11 mol/L. The nano silver film prepared by this electrolysis method is an active, stable, cost-effective, and reusable SERS substrate.展开更多
国际材料协会(IUMRS：International Union of Materials Research Societies)的一个高层系列会议是先进材料国际会议，定期在世界各国召开。2003年是第8屑，在日本横滨召开。会议历时5天，由19个专题会议组成，有报告1000余个。内容涉...国际材料协会(IUMRS：International Union of Materials Research Societies)的一个高层系列会议是先进材料国际会议，定期在世界各国召开。2003年是第8屑，在日本横滨召开。会议历时5天，由19个专题会议组成，有报告1000余个。内容涉及纳米材料的制备，高分子纳米材料，组合化学，自组装纳米表面，纳米涂装，纳米检测，纳米结构的离子束制备，纳米技术的国际合作问题研究，硅基集成电路材料，先进液晶材料，光子纳米材料，导电高分子，介电和铁电材料，先进超导材料，氧化物薄膜，先进磁性材料等。其内容涉及到现代材料学的各个领域和方面。参加会议的人员也是来自于各个领域。展开更多
基金Project (31100693/C100302) supported by the National Natural Science Foundation of ChinaProject (31011120049) supported by the Australia-China Special Fund, International Science Linkages Program co-supported by the Department of Innovation, Industry, Science and Research of Australia, and the Ministry of Science and Technology and National Science Foundation of China+1 种基金Project(2010ZDKG-96) supported by the Major Subject of "13115" Programs of Shaan’xi Province, ChinaProject (2012CB619102) supported by the National Basic Research Program of China
文摘The haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy was studied after surface heparinization. A layer of sol-gel TiO2 films was applied on the alloy samples followed by active treatment in the bio-functionalized solution for introducing the OH- and groups, and then the heparin was immobilized on the active TiO2 films through the electrostatic self assembly technology. It is shown that the heparinized films are mainly composed of anatase and rutile with smooth and dense surface. In vitro blood compatibility was evaluated by haemolysis test, clotting time and platelet adhesion behavior tests. The results show that the haemocompatibility of the alloy could be significantly improved by surface heparinization.
基金ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China （No.10864001）, the Natural Science Foundation of Yunnan Province （No.2008ZC159M）, and No.8 Middle-Aged and Young Academic Talent Reserve Project of Yunnan Province （No.2005PY01-51）.
文摘We demonstrate surface enhanced Raman scattering （SERS） detection of self-assembled nano silver film using a low-cost electrolysis strategy at a proper voltage and silver nitrate concentration in electrolyte. The concentration dependence of SERS from crystal violet （CV） molecules adsorbed to silver film was systematically studied. Importantly, the SERS surface enhancement factor of such nano silver film was 603, which was measured by a portable Raman spectrometer. The minimum concentration of detectable CV molecules can be as low as 10^-11 mol/L. The nano silver film prepared by this electrolysis method is an active, stable, cost-effective, and reusable SERS substrate.
文摘国际材料协会(IUMRS：International Union of Materials Research Societies)的一个高层系列会议是先进材料国际会议，定期在世界各国召开。2003年是第8屑，在日本横滨召开。会议历时5天，由19个专题会议组成，有报告1000余个。内容涉及纳米材料的制备，高分子纳米材料，组合化学，自组装纳米表面，纳米涂装，纳米检测，纳米结构的离子束制备，纳米技术的国际合作问题研究，硅基集成电路材料，先进液晶材料，光子纳米材料，导电高分子，介电和铁电材料，先进超导材料，氧化物薄膜，先进磁性材料等。其内容涉及到现代材料学的各个领域和方面。参加会议的人员也是来自于各个领域。
