|Budget Amount *help
¥50,050,000 (Direct Cost : ¥38,500,000、Indirect Cost : ¥11,550,000)
Fiscal Year 2012 : ¥11,570,000 (Direct Cost : ¥8,900,000、Indirect Cost : ¥2,670,000)
Fiscal Year 2011 : ¥11,570,000 (Direct Cost : ¥8,900,000、Indirect Cost : ¥2,670,000)
Fiscal Year 2010 : ¥10,660,000 (Direct Cost : ¥8,200,000、Indirect Cost : ¥2,460,000)
Fiscal Year 2009 : ¥11,570,000 (Direct Cost : ¥8,900,000、Indirect Cost : ¥2,670,000)
Fiscal Year 2008 : ¥4,680,000 (Direct Cost : ¥3,600,000、Indirect Cost : ¥1,080,000)
Optical properties of carbon nanotubes and graphene, which are novel low-dimensional material composed of carbon atoms, have theoretically been studied and compared with those of semiconductor-compound quantum structures. In carbon nanotubes, its one-dimensionality strongly enhances the interaction effect so that they have higher potential for external-field control of the optical responses. Absorption coefficient of monolayer graphene is known to have a universal value proportional to the fine-structure constant. This study has clarified that the continuum absorption of band-to-band transitions in semiconductor quantum wells also has the same value.