Grilli Simonetta, Vespini Veronica, Ferraro Pietro
Istituto Nazionale di Ottica Applicata del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy.
Langmuir. 2008 Dec 2;24(23):13262-5. doi: 10.1021/la803046j.
Direct patterning of PDMS films is achieved by modulating the wettability of polar dielectric substrates. Periodic array structures of microbumps can be madeup by functionalizing periodically poled lithium niobate crystals. The modulation of surface wettability is obtained through the spatial distribution of the surface electric charges generated by the pyroelectric effect under electrode-less configuration. An appropriate thermal treatment of the substrates assures both the wettability patterning and the fast cross-linking of the PDMS film.
通过调节极性介电基板的润湿性来实现聚二甲基硅氧烷（PDMS）薄膜的直接图案化。微凸点的周期性阵列结构可以通过对周期性极化的铌酸锂晶体进行功能化来形成。表面润湿性的调节是通过在无电极配置下由热释电效应产生的表面电荷的空间分布来实现的。对基板进行适当的热处理可确保润湿性图案化以及PDMS薄膜的快速交联。
