摘要
通过静电自组装技术在玻璃基底上组装了具备纳米尺度形貌的Al2O3和SiO2纳米粒子薄膜,采用液滴法测量其接触角,利用紫外-可见分光光度计测量其光学吸收特性,并利用原子力显微镜(atomforcemicroscope,AFM)对两种纳米粒子薄膜及空白对比试片的表面结构进行了表征。结果表明,利用静电自组装原理在玻璃基片上组装的表面材料确实具备纳米形貌,且粗糙程度不同,具体为nano-Al2O3>nano-SiO2>CTAB>control。这将为微生物细胞及动物细胞在纳米材料表面上的粘附考评实验做好准备。
The nano-Al2O3 and nano-SiO2 particle-modified surfaces were built up by Layer-by-Layer self-assembled method. The optic characteristics of these nanoparticle-modified surfaces and the control were studied by means of the measurements of contact angle and UV-vis, while the properties of these samples and the control were investigated with atomic force microscope for topography analysis. The results show that nanoparticles can self-assemble on the glasses by Layer-by-Layer electrostatic method. All the nanoparticle-modified surfaces and the control possess nano-topography and different roughness described as nano-Al2O3 > nano-SiO2 > CTAB > control. The prepared nanosurfaces can be used in the experiment of microbial and mammalian cells' adhesion.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2005年第3期403-406,共4页
Journal of Chemical Engineering of Chinese Universities
基金
大连理工大学青年教师培养基金
关键词
纳米粒子
自组装
细胞粘附
生物材料
Biomaterials
Chemical modification
Contact angle
Electrostatics
Nanostructured materials
Self assembly
Silica
Surface roughness
Surface topography
