Figure 4: Electrical control of CNT–liposome nanotrain movement.
From: Carbon nanotube–liposome supramolecular nanotrains for intelligent molecular-transport systems
(a) Schematic illustration of the experiment system. S, start; G, goal. (b) Design drawing of the microdevice based on a straight microchannel. Red arrows show the direction of CNT–liposome nanotrain movement. (c) Movement of the CNT–liposome nanotrains in a straight microchannel after applying a voltage. The white square shows the location at which the fluorescence intensity of the moving CNT–liposome nanotrains was analysed. Applying a voltage=50 V. Magnification of the inset close-up figure: X10. Scale bars, 100 μm. (d) Speed of the CNT–liposome nanotrains and current in microchannel versus applying a voltage. (e) Fluorescent intensity curves of the moved CNT–liposome nanotrain at various applied voltages (50–400 W). (f) Schematic illustration of the single λ phage DNA intercalated with GelRed molecules. (g) Fluorescence microscopic image of the λ phage DNA molecules in a straight microchannel. Applying a voltage=200 V. Magnification: X10. (h) Speed of the CNT–liposome nanotrains and λ phage DNA molecules in a straight microchannel after applying voltage. Scale bar, 100 μm. (i) Switchback control of the CNT–liposome nanotrain movement. Red arrows show the direction of CNT–liposome nanotrain movement. (j) A direct observation of the switchback movement of the CNT–liposome nanotrains by fluorescence microscopy. Magnification: X10. Applying voltage=300 V. Scale bars, 100 μm.
