title: 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.
authors.affiliation: Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, CAS Key Laboratory of Mechanical Behavior and Design of Materials, the National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei 230026, PR China.
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Liu
authors.forename: Jin-Long
authors.initials: JL
authors.lastname: Wang
authors.forename: Wei-Ran
authors.initials: WR
authors.lastname: Huang
authors.forename: Le
authors.initials: L
authors.lastname: Yu
authors.forename: Xi-Feng
authors.initials: XF
authors.lastname: Ren
authors.forename: Wu-Cheng
authors.initials: WC
authors.lastname: Wen
authors.forename: Shu-Hong
authors.initials: SH
authors.lastname: Yu
mesh_terms: D002197:Capillary Action; D003460:Crystallization / Q000379:methods*; D017743:Equipment Reuse; D005898:Glass / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D012834:Silver