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(a) High resolution transmission electron microscopy (HRTEM) image show that Fe was present on either the bottom or top of the individual SWNT bridges. For measuring HRTEM, we carefully prepared a separate specimen on the conductive TEM grid. The scale bar represents . (b) Energy dispersive x-ray analysis spectrum showing the existence of Fe at the junction between the SWNT bridge and one side of the electrode interface of Fig. 1(a) . (c) A schematic drawing of the SWNT junction made in this work. Notice that one side of the junction contains catalyst Fe particles due to the root-growth mechanism of our SWNT.
(a) Temperature dependent current vs drain-source voltage characteristics under a vacuum, (b) Coulomb blockade behavior in the negative regime measured at , and (c) the -type field effect transistor response in the positive regime was maintained at .
(a) Channel current vs gate voltage response curves. The inset figure shows the SEM image of the SWNT bridge suspended between the source and drain electrode. (b) Hysteretic curves at low , obtained by sweeping from negative to positive and then in the reverse direction as a function of temperature.
(a) Channel current vs gate voltage response curves with variation of external magnetic field. (b) Applied magnetic field dependent current behavior at low , showing clear gate voltage dependent magneto-current behavior.
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