Surface Microfluidic Patterning and Transporting Organic Small Molecules (pages 2549–2552)
Hong Wang, Wenchong Wang, Liqiang Li, Juan Zhu, Wenxin Wang, Deqing Zhang, Zhaoxiong Xie, Harald Fuchs, Yong Lei and Lifeng Chi
Version of Record online: 13 MAR 2014 | DOI: 10.1002/smll.201400360
A microfluidic method is developed to pattern organic small molecules directly in air. When heated to above its melting point, a powder melts into liquid drops which propagate along the pattern area. The method can further be applied to transport other dye molecules, to create multicolored patterns in one step. The fluorescence microscopy image shows rhodamine B (red), fluorescein (green), and calcein blue (blue) doped N-ethyl-d-glucamine on 100-μm Au lines.