Research

　In the Maki group, we focus on the novel nanodevices for the investigation of new quantum physics and their application for functional electronic and optoelectronic devices. In these studies, we use various promising nanomaterials, such as nanocarbon materials (carbon nanotubes and graphene), metal and semiconductor wires and quantum dots and polymers. By using these materials, we develop various kinds of electronic photonic and optoelectronic devices, such as light emitters, photodetectors, quantum light sources, quantum transport devices, superconducting devices, transistors, and display devices. We investigate (i) the fundamentals of quantum physics and its device properties and (ii) the application of these devices to quantum information technology such as quantum computing and quantum cryptography and that to integrated optoelectronics.

- CNT-based single photon sources at telecommunication wavelength and room temperature
- Ultrahigh-speed nanocarbon blackbody emitters integrated on silicon chips
- CNT-based electroluminescence (EL) emitters
- Nanocarbon photodetectors
- Tunable bandgap engineering for nanocarbon materials

- Superconducting nanowire devices
- CNT-based quantum dot devices
- CNT double-quantum dots
- Field effect transistors

- Quantum dot devices with gold nanowires
- Electrochromic display devices
- Electrical detection of ferromagnetism in Pd nanoparticles by magnetoresistance measurement