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Feedback-controlled electromigration (FCE) has been employed to control metal nanowires with quantized conductance and to create nanogaps. However, the formation of nanostructures by conventional FCE procedure using a microprocessor-based controller with a general purpose operating system (GPOS) is considerably slow process. Therefore, we proposed an ultrafast FCE method using a field-programmable...
We report temperature distribution of graphene during Joule heating process using in-situ near-infrared (NIR) charge-coupled device (CCD) imaging system. Graphene layers were prepared using mechanical exfoliation of a pyrolytic graphite sheet (PGS), which is commercially available from an industrial materials company, and were then deposited on SiO2/Si substrates with approximately 780 nm thermally...
Nanolithography of graphene surfaces using scanning probe microscopy (SPM) scratching with a diamond-coated tip was systematically investigated. The graphene films were obtained by mechanical exfoliation of pyrolytic graphite sheet (PGS). The groove size increased linearly with the applied force. Furthermore, there were no effects of scan speed and scratch angle on the groove size. These results imply...
Temperature distribution of microheaters during electromigration (EM) was observed by near-infrared (NIR) charge coupled device (CCD) imaging system. The temperature of the hot spot, located at the tip of the microheater, was well controlled with varying the applied voltage. Microheaters were broken during EM processes, and breakdown region clearly corresponded to the position of the hot spot. These...
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