Ag-coated submicron particles of polystyrene formed by dewetting process and their application in multi-functional biosensor-chips
Ag-coated submicron particles of polystyrene formed by dewetting process and their application in multi-functional biosensor-chips
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DOI：
10.1016/j.colsurfa.2018.07.007
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发表时间：
2018-12
期刊：
影响因子：
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通讯作者：
Marie Taguchi;Tasuku Ogami;Jun Ando;T. Fukuda;A. Emoto
中科院分区：
文献类型：
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作者：
Marie Taguchi;Tasuku Ogami;Jun Ando;T. Fukuda;A. Emoto
研究了旋转镀膜过程中基于脱湿工艺的亚微米聚苯乙烯（PS）颗粒的形成。分析了玻璃基板的表面形貌。使用相对较高分子量（Mw≥3250）的PS实现了颗粒的形成。此外，还观察到颗粒的形成是由初始的湿薄膜、二次旋毛虫分解结构和最终的脱湿颗粒的顺序形态变化进行的。根据颗粒直径与可见光波长的关系，制备的样品在可见光区表现出明显的光学共振。光共振与环境折射率密切相关，可用于光学传感器芯片。最后，展示了一种多功能生物传感器芯片，用于检测水溶液中的葡萄糖。
The formation of submicron polystyrene (PS) particles based on dewetting process during spin-coating was investigated. The surface morphologies on glass substrates were analyzed. The formation of particles was achieved using PS with relatively high molecular weight (Mw≥ 3250). In addition, it was observed that the particle formation proceeded through sequential morphological changes in the order of initial wet thin film, secondary spinodal-decomposed structures, and eventual dewetted particles. One of the fabricated samples exhibited obvious optical resonance in the visible region based on the relationship between particle dimeters and optical wavelengths in the visible region. The optical resonance strongly depended on the ambient refractive index, which can be used for optical sensor-chips. Finally, a multi-functional biosensor-chip was demonstrated to detect glucose in water solutions.