Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media
Electroabsorption in metallic nanoparticles within transparent dielectric media has been measured. In particular, gold nanoparticles in glass and subnanometer-size metallic domains in iodine doped nonconjugated conductive polymer have been studied. Measurements have been made for applied ac fields a...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/14/4904 |
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| author | Mrinal Thakur Justin Van Cleave |
| author_facet | Mrinal Thakur Justin Van Cleave |
| author_sort | Mrinal Thakur |
| collection | DOAJ |
| description | Electroabsorption in metallic nanoparticles within transparent dielectric media has been measured. In particular, gold nanoparticles in glass and subnanometer-size metallic domains in iodine doped nonconjugated conductive polymer have been studied. Measurements have been made for applied ac fields at 4 kHz, at a wavelength close to the onset of the surface plasmon resonance. The measured electroabsorption (imaginary part of χ<sup>(3)</sup> or Kerr coefficient) has a quadratic dependence on electric field. Its magnitudes were compared for different sizes of the metallic nanoparticles down to the subnanometer-size particles in iodine-doped nonconjugated conductive polymer. As in the case of quadratic electro-optic effect reported earlier, electroabsorption has approximately a 1/d<sup>3</sup> dependence, d being the diameter of nanoparticle. This is consistent with existing theories on confined metallic systems. |
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| format | Article |
| id | doaj.art-abbbc671b58f4134be834effb9f3af2b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:26:02Z |
| publishDate | 2020-07-01 |
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| spelling | doaj.art-abbbc671b58f4134be834effb9f3af2b2023-11-20T07:02:58ZengMDPI AGApplied Sciences2076-34172020-07-011014490410.3390/app10144904Electroabsorption in Metallic Nanoparticles within Transparent Dielectric MediaMrinal Thakur0Justin Van Cleave1Photonic Materials Research Laboratory, Auburn University, Auburn, AL 36849, USAPhotonic Materials Research Laboratory, Auburn University, Auburn, AL 36849, USAElectroabsorption in metallic nanoparticles within transparent dielectric media has been measured. In particular, gold nanoparticles in glass and subnanometer-size metallic domains in iodine doped nonconjugated conductive polymer have been studied. Measurements have been made for applied ac fields at 4 kHz, at a wavelength close to the onset of the surface plasmon resonance. The measured electroabsorption (imaginary part of χ<sup>(3)</sup> or Kerr coefficient) has a quadratic dependence on electric field. Its magnitudes were compared for different sizes of the metallic nanoparticles down to the subnanometer-size particles in iodine-doped nonconjugated conductive polymer. As in the case of quadratic electro-optic effect reported earlier, electroabsorption has approximately a 1/d<sup>3</sup> dependence, d being the diameter of nanoparticle. This is consistent with existing theories on confined metallic systems.https://www.mdpi.com/2076-3417/10/14/4904electroabsorptionmetallic nano- and subnanometer particlesnonlinear opticsKerr coefficientnonconjugated conductive polymers |
| spellingShingle | Mrinal Thakur Justin Van Cleave Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media Applied Sciences electroabsorption metallic nano- and subnanometer particles nonlinear optics Kerr coefficient nonconjugated conductive polymers |
| title | Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media |
| title_full | Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media |
| title_fullStr | Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media |
| title_full_unstemmed | Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media |
| title_short | Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media |
| title_sort | electroabsorption in metallic nanoparticles within transparent dielectric media |
| topic | electroabsorption metallic nano- and subnanometer particles nonlinear optics Kerr coefficient nonconjugated conductive polymers |
| url | https://www.mdpi.com/2076-3417/10/14/4904 |
| work_keys_str_mv | AT mrinalthakur electroabsorptioninmetallicnanoparticleswithintransparentdielectricmedia AT justinvancleave electroabsorptioninmetallicnanoparticleswithintransparentdielectricmedia |