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題名: | Control and Detection of Organosilane Polarization on Nanowire Field-Effect Transistors |
作者: | Lin, M. C.;Chu, C. J.;Tsai, L. C.;Lin, H. Y.;Wu, Cen-Shawn;Wu, Y. P.;Wu, Y. N.;Shieh, D. B.;Su, Y. W.;Chen, C. D. |
貢獻者: | 物理學系 |
日期: | 2007
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上傳時間: | 2013-03-12T04:06:31Z
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出版者: | American Chemical Society |
摘要: | We demonstrated control and detection of UV-induced 3-aminopropyltriethoxysilane (APTES) polarization using silicon nanowire field-effect transistors made by top-down lithograph technology. The electric dipole moment in APTES films induced by UV-illumination was shown to produce negative effective charges. When individual dipoles were aligned with an externally applied electric field, the collective polarization can prevail over the UV-induced charges in the wires and give rise to an abnormal resistance enhancement in n-type wires. Real-time detection of hybridization of 15-mer poly-T/poly-A DNA molecules was performed, and the amount of hybridization-induced charges in the silicon wire was estimated. Based on these results, detection sensitivity of the wire sensors was discussed. |
關聯: | Nano Letters, 7(12): 3656-3661 |
顯示於類別: | [物理學系] 期刊論文
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