Fabrication of Large-Area, High-Enhancennerit SERS Substrates with Tunable interpartide Spacing and Application in Identifying Microorganisms at the Single Cell Level

Jing Chen; Bo Shen; Gaowu Qin

首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Fabrication of Large-Area, High-Enhancennerit SERS Substrates with Tunable interpartide Spacing and Application in Identifying Microorganisms at the Single Cell Level

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Fabrication of Large-Area, High-Enhancennerit SERS Substrates with Tunable interpartide Spacing and Application in Identifying Microorganisms at the Single Cell Level

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The interpartide spacing of the surface-enhanced Raman scattering (SERS) substrate has a strong relationship with its enhancement factor (EF). How to precisely adjust the interpartide gap and generate SERS substrates with excellent quality and high reliability by a facile way is still a challenge. Here, we propose a convenient and environmentally friendly method to synthesize large-area Ag SERS substrates composed of either monodisperse nanoparticles (NPs), NP-linked nanowires (NWs), NW-weaved mesoporous membrane, or NP-aggregates by simply controlling the pH value in alkaline glucose solution, and their SERS enhancements have been evaluated. In addition, the EF of the Au NW-weaved film substrate prepared by our method is one order higher than that well-known dealloyed Au nanoporous substrate. Finally, the SERS spectrum of yeast at the single cell level is successfully acquired by using the highest EF substrate composed of monodisperse Ag NPs (~8.24 x 10~7) in this work at a very low laser power (0.17 mW).

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《The journal of physical chemistry, C. Nanomaterials and interfaces》 |2012年第5期|3320-3328|共9页
作者
Jing Chen; Bo Shen; Gaowu Qin;
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作者单位

Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;

Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Fabrication of Large-Area, High-Enhancennerit SERS Substrates with Tunable interpartide Spacing and Application in Identifying Microorganisms at the Single Cell Level

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