Controlled deposition of sol–gel sensor material using hemiwicking
Controlled deposition of sol–gel sensor material using hemiwicking
复制标题
使用半芯吸控制溶胶-凝胶传感器材料的沉积
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Kristensen
中科院分区：
文献类型：
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作者：
M. Mikkelsen;R. Marie;Jan Hansen;D. Wencel;C. McDonagh;H. O. Nielsen;A. Kristensen
光学传感器是通过将液体溶胶-凝胶传感器材料沉积在聚碳酸酯表面上制成的，该聚碳酸酯表面装饰有周期性微柱阵列。使用半芯吸原理，液体材料在表面结构的引导下扩散，以均匀地填充表面结构之间的体积，并形成具有由微柱的高度确定的厚度的液体膜。在溶剂蒸发后，传感器材料的均匀层驻留在表面上。该制造方法使得能够在塑料表面上容易地且可再现地沉积具有精确厚度的不同传感器材料的隔离点，并且其提供了用于制造集成在一次性实验室容器中的廉价光学传感器的改进方法。
Optical sensors are fabricated by depositing liquid sol–gel sensor material on a polycarbonate surface, which has been decorated with arrays of periodic micropillars. Using the principle of hemiwicking, the liquid material is spread, guided by the surface structures, to homogeneously fill the volume between the surface structures and form a liquid film with a thickness determined by the height of the micropillars. After evaporation of solvents, a uniform layer of sensor material resides on the surface. This fabrication method enables easy and reproducible deposits of isolated spots of different sensor materials of precise thickness to be made on plastic surfaces, and it provides an improved method for fabricating cheap optical sensors integrated in disposable lab containers.