2010 Fiscal Year Final Research Report

Development of a new molecular device using thermoelectric measurement system on nano-composite film

Research Project

Project/Area Number	21710115
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Nanomaterials/Nanobioscience
Research Institution	National Institute of Advanced Industrial Science and Technology
Principal Investigator	KIRIHARA Kszuhiro National Institute of Advanced Industrial Science and Technology, ナノシステム研究部門, 研究員 (70392610)
Project Period (FY)	2009 – 2010
Keywords	分子デバイス / 熱電変換 / 熱起電力 / ナノコンポジット
Research Abstract	Purpose of this study is to realize a new molecular device that elucidates the conductivity and electronic structure of target molecules, without applying strong electric field. Micron- and submicron-scale electrode patterns for the thermoelectric measurement were fabricated. As a test case of this system, Seebeck coefficient of individual boron nanobelt was successfully measured. Nanocomposite films of metal nanoparticles (Au) and oxide insulator matrix (Al_2O_3) for immobilization of target molecule were fabricated between micro-electrodes with submicron gap length. The Au nanoparticles with average diameter of approximately 5nm, and inter-particle distance of 2nm were uniformly distributed. In some case, change in current vs bias voltage curve before and after molecular immobilization was found. However, the immobilization could not be reproducibly detected. The inter-particle distance should be smaller than that in our study.

(4 results)