Aligned silver nanorod arrays produce high sensitivity surface-enhanced Raman spectroscopy substrates

Chaney, Stephen B.; Shanmukh, Saratchandra; Dluhy, Richard A.; Zhao, Y.-P.
July 2005
Applied Physics Letters;7/18/2005, Vol. 87 Issue 3, p031908
Academic Journal
Substrates consisting of silver nanorod arrays with an irregular surface lattice (i.e., random nucleation sites) and with varying rod lengths were fabricated by an oblique angle vapor deposition method. These arrays were evaluated as potential surface-enhanced Raman spectroscopy (SERS) substrates using trans-1,2-bis(4-pyridyl)ethene as a reported molecule. SERS activity was shown to depend upon the length of the nanorods. The Ag nanorods with average lengths of 508.29±44.86 nm, and having aspect ratios of 5.69±1.49 exhibited the maximum SERS enhancement factors of greater than 108. Theoretical calculations indicate that this large SERS enhancement may be partially explained by the shape, density, and lateral arrangement of the Ag nanorod arrays.


Related Articles

  • Silicon nanocrystal formation in annealed silicon-rich silicon oxide films prepared by plasma enhanced chemical vapor deposition. Daldosso, N.; Das, G.; Larcheri, S.; Mariotto, G.; Dalba, G.; Pavesi, L.; Irrera, A.; Priolo, F.; Iacona, F.; Rocca, F. // Journal of Applied Physics;6/1/2007, Vol. 101 Issue 11, p113510 

    Silicon-rich silicon oxide films deposited by plasma enhanced chemical vapor deposition with different total Si contents (from 39 to 46 at. %) have been annealed at increasing temperature (up to 1250 °C) in order to study the Si nanocrystal (Si-nc) nucleation as well as the structural changes...

  • Carbon helixes produced by hot filament assisted chemical vapor deposition. Jayatissa, Ahalapitiya H.; Kun Guo // Journal of Materials Science: Materials in Electronics;May2010, Vol. 21 Issue 5, p509 

    Carbon helix nanofibers were synthesized by a hot filament assisted chemical vapor deposition at a substrate temperature of 600 °C. It was observed that the formation of a carbon helix structure was attributed to the mixing of cobalt catalyst particles with copper. The diameter of carbon...

  • PRESSING INDUCED POLYMORPHIC PHASE TRANSITION IN SUBMICRON-SIZED GAMMA-HMX. Lee, K.-Y.; Moore, D. S. // AIP Conference Proceedings;12/12/2007, Vol. 955 Issue 1, p975 

    Using Raman spectroscopy, a novel submicron-sized HMX (sm-HMX) was determined to be both the gamma polymorph and stable with respect to conversion to beta-HMX under ambient conditions for at least a year. Pressing of sm-HMX powder in a small diameter pellet press at pressures from 10,000 psi to...

  • Experimental studies of the vapor phase nucleation of refractory compounds. V. The condensation of lithium. Ferguson, Frank T.; Nuth, Joseph A.; Nuth III, Joseph A. // Journal of Chemical Physics;9/8/2000, Vol. 113 Issue 10 

    Lithium nucleation was studied over the range of 830-1100 K in a gas evaporation apparatus yielding supersaturation ratios of approximately 300 to 7 over this temperature range, respectively, at an estimated flux of 10[sup 9] cm-3 s-1. During runs we observed the same fluorescence phenomena due...

  • Silver Nanoparticles and Graphitic Carbon Through Thermal Decomposition of a Silver/Acetylenedicarboxylic Salt. Dallas, Panagiotis; Bourlinos, Athanasios B.; Komninou, Philomela; Karakassides, Michael; Niarchos, Dimitrios // Nanoscale Research Letters;Nov2009, Vol. 4 Issue 11, p1358 

    Spherically shaped silver nanoparticles embedded in a carbon matrix were synthesized by thermal decomposition of a Ag(I)/acetylenedicarboxylic acid salt. The silver nanoparticles, which are formed either by pyrolysis at 300 °C in an autoclave or thermolysis in xylene suspension at reflux...

  • Confocal Raman spectroscopic observation of hexagonal diamond formation from dissolved carbon in nickel under chemical vapor deposition conditions. Nishitani-Gamo, Mikka; Sakaguchi, Isao; Loh, Kian Ping; Kanda, Hisao; Ando, Toshihiro // Applied Physics Letters;8/10/1998, Vol. 73 Issue 6, p765 

    We have studied nucleation and growth of diamond on nickel substrate by microwave plasma assisted chemical vapor deposition followed by in situ carbon–hydrogen solution treatment. The Raman depth profiles of isolated diamond crystals on the (100) and (111) surfaces were measured by...

  • Enhanced light sensing characteristics of nanostructured gallium nitride/silicon heterojunctions: Interface matters. Saron, K. M. A.; Hashim, M. R.; Naderi, N.; Allam, Nageh K. // Journal of Applied Physics;Oct2013, Vol. 114 Issue 13, p134510 

    We report on the growth of highly pure and single crystalline gallium nitride (GaN) nanostructures on different silicon (Si) substrates by thermal vapor deposition via the direct reaction of gallium with volatile ammonia solution. The structural and optical characteristics of the as-grown GaN/Si...

  • Infrared study of amorphous B1-xCx films. Shirai, Koun; Emura, Shuichi; Gonda, Shun-ichi; Kumashiro, Yukinobu // Journal of Applied Physics;9/1/1995, Vol. 78 Issue 5, p3392 

    Presents a study that investigated the properties of boron (B)-carbon (C) films by using infrared and Raman spectra. Information on the crystal structure of boron-rich solids; Distinction between host and foreign atoms in amorphous solids; Use of plasma chemical-vapor deposition method.

  • Femtosecond laser fabrication of micro and nano-disks in single layer graphene using vortex Bessel beams. Wetzel, Benjamin; Xie, Chen; Lacourt, Pierre-Ambroise; Dudley, John M.; Courvoisier, Francois // Applied Physics Letters;12/9/2013, Vol. 103 Issue 24, p241111 

    We report the fabrication of micro and nano-disks in single layer chemical vapor deposition graphene on glass substrate using femtosecond laser ablation with vortex Bessel beams. The fabricated graphene disks with diameters ranging from 650 nm to 4 μm were characterized by spatially resolved...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics