2014
DOI: 10.5012/bkcs.2014.35.3.725
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Diameter Effect of Silver Nanorod Arrays to Surface-enhanced Raman Scattering

Abstract: The effect the diameter of silver nanorod arrays whose distance between the nanorods was uniform at 65 nm have on Surface-enhanced Raman Scattering (SERS) has been studied by varying the diameter from 28 to 51 nm. Nanorod length was fixed at approximately 62 nm, which is the optimum length for SERS by excitation with a 632.8 nm laser line. The transverse and longitudinal modes of the surface plasmon of these silver nanorods were near 400 and 630 nm, respectively. The extinction of the longitudinal mode increas… Show more

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Cited by 9 publications
(6 citation statements)
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“…38,39 For instance, nanorods generate two SPR bands corresponding to their large and small axes. 40,41 UV−vis spectroscopy measurements revealed that silver nanoparticles with sizes of 40 and 60 nm, suspended in an aqueous solution, exhibit SPR peaks in the blue light region. The SPR peaks were observed at wavelengths of 435 and 450 nm, respectively (Figure 2a).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…38,39 For instance, nanorods generate two SPR bands corresponding to their large and small axes. 40,41 UV−vis spectroscopy measurements revealed that silver nanoparticles with sizes of 40 and 60 nm, suspended in an aqueous solution, exhibit SPR peaks in the blue light region. The SPR peaks were observed at wavelengths of 435 and 450 nm, respectively (Figure 2a).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“… It is worth noting that the SPR peak position depends on the silver nanoclusters’ dielectric constant and the particles’ interdistance. The choice of spherical-shaped silver nanoparticles is deliberate as they present a single SPR peak. In contrast, asymmetrically shaped nanoparticles exhibit multiple absorption peaks. , For instance, nanorods generate two SPR bands corresponding to their large and small axes. , …”
Section: Results and Discussionmentioning
confidence: 99%
“…There have been some number of reports on realizing ultrahigh E.F.'s of >10 in large area, among which probablly the most promising examples are the development of silver nanorod (AgNR) arrays by oblique angle deposition technique 3,4) and a Ag nanowire bundle array by a sophisticated process including anodic aluminum oxide (AAO) template technique. 5) E.F.'s of >10 7 in large area also have been realized based on various techniques, such as aligned AgNR arrays by the AAO template technique, 9,10) silver nanoparticles (AgNP's) on a gold nanofunnel array by the AAO, 11) multilayer aggregated AgNP's, 12) and so on. It is known that single molecule detection based on SERS is possible when the E.F. is >10 8 .…”
Section: Introductionmentioning
confidence: 99%
“…Methods to achieve multi-band plasmon resonance include tuning nanostructure geometry, 1 ordering particles into lattices, 2-5 combining metals with different optical properties [6][7][8][9] and composing core-shell nanostructures. 12 Lattice resonances supported by ordered plasmonic nanostructures can be orders of magnitude more intense than individual particles due to EM eld coupling among the nanostructures in the array. 12 Lattice resonances supported by ordered plasmonic nanostructures can be orders of magnitude more intense than individual particles due to EM eld coupling among the nanostructures in the array.…”
Section: Introductionmentioning
confidence: 99%
“…10,11 Nanorod geometries, for example, possess both longitudinal and transverse SPR modes, with the former providing the highest electromagnetic (EM) eld enhancement. 12 Lattice resonances supported by ordered plasmonic nanostructures can be orders of magnitude more intense than individual particles due to EM eld coupling among the nanostructures in the array. [13][14][15][16] Recently reported was simultaneous enhancement from bimetallic particles at different spectral ranges.…”
Section: Introductionmentioning
confidence: 99%