Mol. Optoelectronics

[Japanese]
AIST

Nobutsugu MINAMI
Invited Senior Research Scientist
Nanosystem Research Insitute

Updated 1 April 2010

(Topics)
September 2008 Highly Sensitive Gas Sensor Developed Using Carbon Nanotubes
- NO₂ Sensor that can be prepared by a simple and cheap method -
　（Press Release in Japanese, 30 September 2008）

June 2008 An on/off ratio of 10⁵ has been achieved for a carbon nanotube thin film FET with a mobility higher than 2cm²/Vs by the separation/extraction of highly pure semiconducting carbon nanotubes　（Press Release 10 June 2008）

August 2006Chirality Distribution Revealed for the First Time for Double-Wall Carbon Nanotubes and Arc-Discharge Single-Wall Carbon Nanotubes by the Development of an IR-Extended Photoluminescence Mapping System (up to 2.3micron)!!
June 2005 "Light Emitting Thin Films Successfully Prepared from Carbon Nanotubes" (Sansoken Today, in Japanese with an English Abstract)
　　　　[PDF Version]
March 2005 Aligned Carbon Nanotubes Emit Highly Polarized Light(Press Release)
August 2004 "Producing Carbon Nano-Jelly in AIST" (Asian Pacific Nanotech Weekly)
July 2004 Nanotech Version of Japanese Marbling "Sumi-Nagashi" (News Article in Japanese)
March 2004 Carbon nanotubes made into high-quality thin films!! (Nanotech2004 Exhibition)
Oct 2003 "Modified nanotubes show electronic promise" (Chemistry in Britain, October, 2003, p.11: Interviewed on the basis of our J. Mater. Chem. paper below)
July 2003 "Chemical Functionalization of Single-wall Carbon Nanotubes" Selected as a Hot Article for J. Mater. Chem. (Interviewed via email)
Oct 2002 Homogeneous thin film realized for single-wall carbon nanotubes!!(AIST Today Digest in English, No.7 Winter 2003)

since June 25, 2001

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Photogallery Tsukuba
"Four Seasons"

◆OBJECTIVES◆ 　　Shining light on materials stimulates a variety of phenomena such as light emission of different colors, generation of electricity, photochemical reactions and so on. On the other hand, some materials are known to emit light when they are exposed to electrical, mechanical, or thermal stimuli. Investigation of these phenomena from different points of view should lead us to the discovery of hitherto unknown properties and functions of materials. Making use of various experimental techniques (optical, spectroscopic, and electrical), we are trying to understand the relationship between such photoconversion processes and the nanoscopic structures of materials (structure of molecules and their aggregates, molecular alignment, hybridization of different materials etc.). In addition, understanding the relationship between intermolecular interactions and optoelectronic properties constitutes an indispensable prerequisite for the development of various applications such as chemical sensors. We believe that this approach will eventually lead to the development of materials with novel optical and electronic functions.

◆METHODOLOGY◆ 　 [Materials] 　
New carbonaceous materials mainly carbon nanotubes 　

[Synthesis and Processing] 　
1) Chemical functionalization of conjugated molecules
2) Thin film processing (LB technique, capillary filling, vacuum vapor deposition, spin coating, polymer dispersion, etc.) 　
3) Hybridization of different materials 　
4) Molecular alignment and self-organization

[Measurements] 　
1) UV-Vis spectrophotometry, various kinds of luminescence, modulation spectroscopy, and other spectroscopic techniques
2) Photoconductivity, photovoltaics, electroluminescence, their spectral behavior, and other electrical measurements 　
3) Optical and electrical transient measurements in ns and ps time regime using short pulse lasers 　
4) STM/AFM, FT-IR, Raman, SEM, AFM, XRD, and other structural analyses 　

◆PROJECTS◆

Exploratory research and development of optical and electronic properties of new carbonaceous materials (carbon nanotubes and their chemically functionalized forms)
- Chemical and electrochemical control of electronic properties of single-wall carbon nanotubes (SWNT)
- Optoelectronic properties of SWNT
- Chemical functionalization and thin-film processing of SWNTs
- Optoelectronic applications of carbon nanotubes including chemical sensors

◆MEMBERS◆ 　　 Nobutsugu MINAMI Said KAZAOUI （Nanotube Research Center）　　　　　

Publications 　 Research Facilities 　 Contact us 　
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Photogallery Tsukuba
(Four Seasons)