方案摘要
方案下载应用领域 | |
检测样本 | |
检测项目 | |
参考标准 |
In order to seek the method to improve the hemo-compatibility of artificial mechanical heart valve, the surface of rabbit’s heart valve was observed using the scanning electron microscopy (SEM). The results showed that the dual-scale structure which consists of cobblestones-like structure of 8 mmin underside diameter and 3 mm in height, and the fine cilia of about 150 nm in diameter, was helpful to the hemocompatibility of the heart valve. Therefore, the polydimethylsiloxane (PDMS) surface with hierarchical micro-structure was fabricated using femtosecond laser fabrication technique and soft lithography. At the same time, the tests of apparent contact angle and platelet adhesion on both smooth and textured PDMS surfaces were carried out to study their wettability and hemo-compatibility. The results demonstrated that the surface with textured structure displayed more excellent wettabililty and anticoagulation property than that of smooth surface. The apparent contact angle of textured surface enhanced from 113.18 to 163.68 and the amount of adsorbed platelet on such surface was fewer, no distortion and no activation were found.
改进的Washburn法研究矿物岩石颗粒的表面润湿性
接触角测量仪---如何方便地测量墨水、油墨、涂料等的接触角和表面张力
FOAMSCAN泡沫分析仪表征外部设备产生的泡沫特性
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