Deposition of Quantum Dots in a Capillary Tube.
The ability to assemble nanomaterials, such as quantum dots, enables the creation of functional devices that present unique optical and electronic properties. For instance, light-emitting diodes with exceptional color purity can be printed via the evaporative-driven assembly of quantum dots. Nevertheless, current studies of the colloidal deposition of quantum dots have been limited to the surfaces of a planar substrate. Here, we investigate the evaporation-driven assembly of quantum dots inside a confined cylindrical geometry. Specifically, we observe distinct deposition patterns, such as banding structures along the length of a capillary tube. Such coating behavior can be influenced by the evaporation speed as well as the concentration of quantum dots. Understanding the factors governing the coating process can provide a means to control the assembly of quantum dots inside a capillary tube, ultimately enabling the creation of novel photonic devices.
Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States.
Yong Lin
YL
Kong
Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States.
François
F
Boulogne
Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States.
Hyoungsoo
H
Kim
Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States.
Janine
J
Nunes
Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States.
Jie
J
Feng
Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States.
Howard A
HA
Stone