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Ordering Ag nanowire arrays by a glass capillary: a portable, reusable and durable SERS substrate.

ABSTRACT: Assembly of nanowires into ordered macroscopic structures with new functionalities has been a recent focus. In this Letter, we report a new route for ordering hydrophilic Ag nanowires with high aspect ratio by flowing through a glass capillary. The present glass capillary with well-defined silver nanowire films inside can serve as a portable and reusable substrate for surface-enhanced Raman spectroscopy (SERS), which may provide a versatile and promising platform for detecting mixture pollutions. By controlling the flow parameters of nanowire suspensions, initially random Ag nanowires can be aligned to form nanowire arrays with tunable density, forming cambered nanowire films adhered onto the inner wall of the capillary. Compared with the planar ordered Ag nanowire films by the Langmuir-Blodgett (LB) technique, the cambered nanowire films show better SERS performance.

SUBMITTER: Liu JW

PROVIDER: S-EPMC3523285 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature

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Ordering Ag nanowire arrays by a glass capillary: a portable, reusable and durable SERS substrate.

Liu Jian-Wei JW Wang Jin-Long JL Huang Wei-Ran WR Yu Le L Ren Xi-Feng XF Wen Wu-Cheng WC Yu Shu-Hong SH

Scientific reports 20121217

Assembly of nanowires into ordered macroscopic structures with new functionalities has been a recent focus. In this Letter, we report a new route for ordering hydrophilic Ag nanowires with high aspect ratio by flowing through a glass capillary. The present glass capillary with well-defined silver nanowire films inside can serve as a portable and reusable substrate for surface-enhanced Raman spectroscopy (SERS), which may provide a versatile and promising platform for detecting mixture pollutions ...[more]

PMID: 23248750

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