Park Jungho, Moon Jooho, Shin Hyunjung, Wang Dake, Park Minseo
Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, South Korea.
J Colloid Interface Sci. 2006 Jun 15;298(2):713-9. doi: 10.1016/j.jcis.2006.01.031. Epub 2006 Feb 3.
An array of the colloidal photonic crystals was directly fabricated using an ink-jet printing. The colloidal ink droplets containing the monodispersed polystyrene latex particles were selectively deposited on a hydrophobic surface. Solvent evaporation from each ink droplet leads to a formation of microdome-shaped colloidal assembles of close-packed structures. Microspectroscopic analysis has confirmed that the individual assembly serves as a photonic crystal and its optical properties can be correlated with the microstructural features. Unlike other techniques of patterned growth of colloidal photonic crystal, the substrate does not need to be patterned first and no template is needed in the direct writing by the ink-jet printing. Using our strategy, we have rapidly produced the colloidal photonic crystal microarrays composed of different-sized spheres addressably patterned on the same substrate.
使用喷墨打印直接制备了一系列胶体光子晶体。含有单分散聚苯乙烯胶乳颗粒的胶体墨滴被选择性地沉积在疏水表面上。每个墨滴中的溶剂蒸发导致形成紧密堆积结构的微圆顶形胶体聚集体。微观光谱分析证实，单个聚集体可作为光子晶体，其光学性质与微观结构特征相关。与其他胶体光子晶体图案化生长技术不同，该方法无需先对衬底进行图案化，在喷墨打印直接写入过程中也无需模板。采用我们的策略，我们已在同一衬底上快速制备出由不同尺寸球体组成的可寻址图案化的胶体光子晶体微阵列。
