Optical vortex trap for resonant confinement of metal nanoparticles

Maria Dienerowitz; Michael Mazilu; Peter Reece; Thomas Fraser Krauss; Kishan Dholakia

doi:10.1364/OE.16.004991

Optical vortex trap for resonant confinement of metal nanoparticles

Maria Dienerowitz, Michael Mazilu, Peter Reece, Thomas Fraser Krauss, Kishan Dholakia

Research output: Contribution to journal › Article › peer-review

Abstract

The confinement and controlled movement of metal nanoparticles and nanorods is an emergent area within optical micromanipulation. In this letter we experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field possessing a helical phasefront that confines the nanoparticle to the vortex core (dark) region. We interpret our data with a theoretical framework based upon the Maxwell stress tensor formulation to elucidate the total forces upon nanometric particles near the particle plasmon resonance. Rotation of the particle due to orbital angular momentum transfer is observed. This geometry may have several advantages for advanced manipulation of metal nanoparticles. (C) 2008 Optical Society of America.

Original language	English
Pages (from-to)	4991-4999
Number of pages	9
Journal	Optics Express
Volume	16
Issue number	7
DOIs	https://doi.org/10.1364/OE.16.004991
Publication status	Published - 31 Mar 2008

Keywords

ORBITAL ANGULAR-MOMENTUM
GAUSSIAN LASER MODES
GOLD NANOPARTICLES
RADIATION PRESSURE
PARTICLES
SINGLE
SPECTROSCOPY
FORCES
ATOMS
LIGHT

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abstract = "The confinement and controlled movement of metal nanoparticles and nanorods is an emergent area within optical micromanipulation. In this letter we experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field possessing a helical phasefront that confines the nanoparticle to the vortex core (dark) region. We interpret our data with a theoretical framework based upon the Maxwell stress tensor formulation to elucidate the total forces upon nanometric particles near the particle plasmon resonance. Rotation of the particle due to orbital angular momentum transfer is observed. This geometry may have several advantages for advanced manipulation of metal nanoparticles. (C) 2008 Optical Society of America.",

keywords = "ORBITAL ANGULAR-MOMENTUM, GAUSSIAN LASER MODES, GOLD NANOPARTICLES, RADIATION PRESSURE, PARTICLES, SINGLE, SPECTROSCOPY, FORCES, ATOMS, LIGHT",

author = "Maria Dienerowitz and Michael Mazilu and Peter Reece and Krauss, {Thomas Fraser} and Kishan Dholakia",

year = "2008",

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doi = "10.1364/OE.16.004991",

language = "English",

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T1 - Optical vortex trap for resonant confinement of metal nanoparticles

AU - Dienerowitz, Maria

AU - Mazilu, Michael

AU - Reece, Peter

AU - Krauss, Thomas Fraser

AU - Dholakia, Kishan

PY - 2008/3/31

Y1 - 2008/3/31

N2 - The confinement and controlled movement of metal nanoparticles and nanorods is an emergent area within optical micromanipulation. In this letter we experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field possessing a helical phasefront that confines the nanoparticle to the vortex core (dark) region. We interpret our data with a theoretical framework based upon the Maxwell stress tensor formulation to elucidate the total forces upon nanometric particles near the particle plasmon resonance. Rotation of the particle due to orbital angular momentum transfer is observed. This geometry may have several advantages for advanced manipulation of metal nanoparticles. (C) 2008 Optical Society of America.

AB - The confinement and controlled movement of metal nanoparticles and nanorods is an emergent area within optical micromanipulation. In this letter we experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field possessing a helical phasefront that confines the nanoparticle to the vortex core (dark) region. We interpret our data with a theoretical framework based upon the Maxwell stress tensor formulation to elucidate the total forces upon nanometric particles near the particle plasmon resonance. Rotation of the particle due to orbital angular momentum transfer is observed. This geometry may have several advantages for advanced manipulation of metal nanoparticles. (C) 2008 Optical Society of America.

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KW - GAUSSIAN LASER MODES

KW - GOLD NANOPARTICLES

KW - RADIATION PRESSURE

KW - PARTICLES

KW - SINGLE

KW - SPECTROSCOPY

KW - FORCES

KW - ATOMS

KW - LIGHT

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DO - 10.1364/OE.16.004991

M3 - Article

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VL - 16

SP - 4991

EP - 4999

JO - Optics Express

JF - Optics Express

IS - 7

ER -

Optical vortex trap for resonant confinement of metal nanoparticles

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Keywords

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