Optical trapping through the localized surface-plasmon resonance of engineered gold nanoblock pairs
Abstract
We have investigated the plasmonic trapping of dielectric nanoparticles by using engineered gold nanoblock pairs with ∼5-nm gaps. Pairs with surface-plasmon resonance peaks at the incident wavelength allow the trapping of 350-nm-diameter nanoparticles with 200 W/cm2 laser intensities, and their plasmon resonance properties and trapping performance are drastically modified by varying the nanoblock size of ∼20%. In addition, plasmon resonance properties of nanoblock pairs strongly depend on the direction of the linear polarization of the incident laser, which determines the trapping performance.
Journal
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- Optics Express
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Optics Express 19 (18), 17462-17468, 2011-08-29
Optical Society of America
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Details 詳細情報について
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- CRID
- 1050001339009403520
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- NII Article ID
- 120003340665
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- HANDLE
- 2115/47135
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- ISSN
- 10944087
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- CiNii Articles