Surface patterning and biological evaluation of semi-interpenetrated poly(HEMA)/poly(alkyl β-malolactonate)s

Semi-interpenetrating hydrogel networks were prepared by radical polimerization of monomer HEMA, co-monomer EGDMA as cross-linking agent and in the presence of 1 wt % of poly(alkyl β-malolactonate)s. Biological evaluation in terms of cell adhesion and proliferation of the prepared materials showed the ability of HEMA-based hydrogels to sustain a good cell adhesion and proliferation. Moreover, a method based on soft-lithography to obtained surface microstructured semi-interpenetrating hydrogel networks was developed, thus allowing for further investigation of the influence of surface topography on cell behavior.     

基于软光刻的高聚物多模光功率分配器

设计并制作了一种紧凑型高聚物光功率分配器,该器件长度比传统器件结构缩短近1/3,实现了器件的微型化改进.利用设计仿真工具BeamProp对器件所需参量进行详细的筛选分析,最终确定了器件结构的具体数值.采用极具优势的软光刻技术印制成功高聚物1×8光功率分配器,在实际的测量中所得损耗结果与模拟仿真符合较好.该器件很大程度上迎合了通信器件微型化的发展趋势,且所采用的制作工艺具有加工便捷,成型快速,成本低廉等独特优势,使器件的规模生产成为可能.