| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
In this year, I conduct the research about the crystal growth and impurity doping behavior of single crystal metal oxide nanowires fabricated via vapor-liquid-solid (VLS) process. In details, the impact of interfacial (LS and VS) selective growth on the electrical transport property of impurity doped nanowires is clarified. Here 6 orders of magnitude control of electrical conductivity of single crystalline Sb-doped SnO2 nanowires is demonstrated. This electrical conductivity range via an intentional impurity doping is the widest of the ones in metal oxide semiconducting nanowires reported so far. This wide range electrical conductivity controllability of single crystalline metal oxide nanowires will be a foundation for the various electronic device applications.
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| 今後の研究の推進方策 |
VOCs (volatile organic compounds) detection/discrimination in human’s exhaled breath by electronic devices is a crucially important issue in terms of the disease-related biomarkers. In this work, I propose an original selector/sensor device system to distinguish a lung cancer marker of nonanal (C9 aldehyde) among the similar molecules of octanal and decanal (C8 and C10 aldehyde).
In this year, the details of research plan is as follows. 1) Adsorption mechanism of nonanal on Sb-SnO2 nanowire array will be studied by combining the p-MAIRS, photoluminescence characterization, and molecular simulation. 2) The electrical discrimination of nonanal among mixtures of C8, C9, C10 aldehyde will be demonstrated using the on-chip selector-sensor devices based on the results obtained so far.
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