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It was possible to form a nanoscale hole array with extremely accurate periodicity using the electron-beam lithography method and reactive ion etching method by adopting aluminum as a metal material with which surface plasmon resonance can be obtained in the entire visible light region, resulting in the successful development of a color filter for the five colors red, orange, yellow, green, and blue. The newly-developed device displays excellent monochromaticity and transmittance. |
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Two quantum dots in close proximity, which confine electrons, and the device structure that controls electrical transmission, including electrodes, etc., were all fabricated in a single graphene sheet by direct processing of a graphene sheet consisting of three layers of graphene (thickness: approximately 1nm) using the electron beam lithography and reactive ion etching techniques. The researchers also succeeded in demonstrating single electron device operation, in which the electrons in the quantum dots are transferred individually, and in modifying the coupling of the electrons between the two quantum dots utilizing the graphene gate electrode. As a result, this work realized a coupled quantum dot device,
which is the most fundamental integrated nanodevice.
“Nano Letters” in press |
