Optical extinction spectroscopy used to characterize metallic nanowires
We present a method for sizing metallic nanowires through the analysis of the extinction spectra of the scattered light when the wires are illuminated alternatively with p- and s-polarization waves. The method is applied to isolated silver nanowires in air or immersed in index matching oil. The diel...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
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2007
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 09533caa a22010937a 4500 | ||
|---|---|---|---|
| 001 | PAPER-6450 | ||
| 003 | AR-BaUEN | ||
| 005 | 20251015084430.0 | ||
| 008 | 190411s2007 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-34547123332 | |
| 024 | 7 | |2 cas |a silver, 7440-22-4 | |
| 030 | |a NNOTE | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Scaffardi, Lucía Beatriz | |
| 245 | 1 | 0 | |a Optical extinction spectroscopy used to characterize metallic nanowires |
| 260 | |c 2007 | ||
| 270 | 1 | 0 | |m Scaffardi, L.B.; CIOp (CONICET, CIC), cc 124, 1900 La Plata, Argentina; email: lucias@ciop.unlp.edu.ar |
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a We present a method for sizing metallic nanowires through the analysis of the extinction spectra of the scattered light when the wires are illuminated alternatively with p- and s-polarization waves. The method is applied to isolated silver nanowires in air or immersed in index matching oil. The dielectric function of silver is affected by the size of the cylinders, and its influence on the extinction spectra near the plasmon resonance or near the dip position is considered. Due to the size of the nanocylinders, it is necessary to include two different permittivities in the electromagnetic model to analyse the behaviour of the material under different polarization incidences. This introduces anisotropy in the system, which comprises isotropic cylinders. The behaviour of the extinction spectra for p-waves allows us to determine the wire radii, taking into account the plasmon peak position for radii larger than 7 nm, or alternatively, by using the contrast between maximum and minimum intensity near the plasmon frequency, for radii lower than 5 nm. For s-waves, although no plasmon peak appears, we can determine the radii by analysing the contrast between the ridge of the spectra near 260-275 nm and the minimum near 320-330 nm for radii larger than 10 nm, or analysing the slope in the spectra over 350 nm, for radii below 10 nm. The present study shows that spectral extinction is a very simple and inexpensive technique that can be useful for characterizing the radius of nanocylinders when electron microscopy (TEM or SEM) is not available. © IOP Publishing Ltd. |l eng | |
| 593 | |a CIOp (CONICET, CIC), cc 124, 1900 La Plata, Argentina | ||
| 593 | |a Área Departamental de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de La Plata, Argentina | ||
| 593 | |a Instituto de Física Arroyo Seco, Facultad de Cs Exactas, UNICEN, Pinto 399, 7000, Tandil, Argentina | ||
| 593 | |a CONICET, Rivadavia 1917, Buenos Aires, Argentina | ||
| 593 | |a Grupo de Electromagnetismo Aplicado, Departamento de Física-FCEyN - UBA, Argentina | ||
| 593 | |a Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina | ||
| 690 | 1 | 0 | |a ELECTROMAGNETIC MODEL |
| 690 | 1 | 0 | |a INDEX MATCHING OIL |
| 690 | 1 | 0 | |a OPTICAL EXTINCTION SPECTROSCOPY |
| 690 | 1 | 0 | |a PLASMON PEAK POSITION |
| 690 | 1 | 0 | |a POLARIZATION INCIDENCES |
| 690 | 1 | 0 | |a LIGHT POLARIZATION |
| 690 | 1 | 0 | |a LIGHT SCATTERING |
| 690 | 1 | 0 | |a PERMITTIVITY |
| 690 | 1 | 0 | |a SPECTROSCOPIC ANALYSIS |
| 690 | 1 | 0 | |a SURFACE PLASMON RESONANCE |
| 690 | 1 | 0 | |a TRANSMISSION ELECTRON MICROSCOPY |
| 690 | 1 | 0 | |a NANOWIRES |
| 690 | 1 | 0 | |a METALLIC NANOWIRE |
| 690 | 1 | 0 | |a NANOWIRE |
| 690 | 1 | 0 | |a SILVER |
| 690 | 1 | 0 | |a UNCLASSIFIED DRUG |
| 690 | 1 | 0 | |a ANISOTROPY |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a ELECTROMAGNETIC FIELD |
| 690 | 1 | 0 | |a ILLUMINATION |
| 690 | 1 | 0 | |a LIGHT SCATTERING |
| 690 | 1 | 0 | |a P WAVE |
| 690 | 1 | 0 | |a POLARIZATION |
| 690 | 1 | 0 | |a PRIORITY JOURNAL |
| 690 | 1 | 0 | |a SCANNING ELECTRON MICROSCOPY |
| 690 | 1 | 0 | |a SPECTROSCOPY |
| 690 | 1 | 0 | |a TRANSMISSION ELECTRON MICROSCOPY |
| 700 | 1 | |a Lester, Marcelo Fabián | |
| 700 | 1 | |a Skigin, D. | |
| 700 | 1 | |a Tocho, J.O. | |
| 773 | 0 | |d 2007 |g v. 18 |k n. 31 |p Nanotechnology |x 09574484 |t Nanotechnology | |
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