Optical Trapping of Plasmonic Mesocapsules: Enhanced Optical Forces and SERS

2016 ◽  
Vol 121 (1) ◽  
pp. 691-700 ◽  
Author(s):  
D. Spadaro ◽  
M. A. Iatí ◽  
J. Pérez-Piñeiro ◽  
C. Vázquez-Vázquez ◽  
M. A. Correa-Duarte ◽  
...  
Keyword(s):  
Optical Trapping ◽  
Optical Forces

scholarly journals Optical trapping and optical force positioning of two-dimensional materials

Nanoscale ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 1245-1255 ◽  
Author(s):  
M. G. Donato ◽  
E. Messina ◽  
A. Foti ◽  
T. J. Smart ◽  
P. H. Jones ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Optical Trapping ◽  
Layered Materials ◽  
Optical Force ◽  
Two Dimensional ◽  
Optical Forces ◽  
Two Dimensional Materials ◽  
Liquid Phase Exfoliation

Optical forces are used for trapping, characterization, and positioning of layered materials (hBN, MoS2, and WS2) obtained by liquid phase exfoliation.

Optical forces in lossless arbitrary refractive index optical trapping and micromanipulation

Metamaterials ◽  
2012 ◽  
Vol 6 (1-2) ◽  
pp. 51-63 ◽  
Author(s):  
Leonardo A. Ambrosio ◽  
Hugo E. Hernández-Figueroa
Keyword(s):  
Refractive Index ◽  
Optical Trapping ◽  
Optical Forces

Nanowire-type plasmonic waveguides as strong and tunable optical tweezers

2019 ◽  
Vol 33 (07) ◽  
pp. 1950081 ◽  
Author(s):  
Shu Yang ◽  
Kang Zhao
Keyword(s):  
Long Range ◽  
Optical Tweezers ◽  
Optical Trapping ◽  
Near Field ◽  
Optical Forces ◽  
Plasmonic Waveguides ◽  
Trapping Forces

A series of nanowire-type plasmonic waveguides are proposed. The mode properties of these waveguides and their dependences on various geometry parameters are studied. It is shown that they can generate deep subwavelength confinement and long-range propagation simultaneously. Moreover, the optical forces exerted on dielectric nanoparticles by these waveguides are calculated. It is found that the optical trapping forces are very strong, and that their distribution can be effectively regulated by certain geometry parameters. Using these features, strong and tunable near-field optical tweezers can be designed.

Optical Trapping, Sensing, and Imaging by Photonic Nanojets

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 434
Author(s):  
Heng Li ◽  
Wanying Song ◽  
Yanan Zhao ◽  
Qin Cao ◽  
Ahao Wen
Keyword(s):  
Optical Tweezers ◽  
Optical Trapping ◽  
Near Field ◽  
Super Resolution ◽  
Diffraction Limit ◽  
Research Progress ◽  
Optical Forces ◽  
Resolution Imaging ◽  
Photonic Nanojets ◽  
Near Field Scanning

The optical trapping, sensing, and imaging of nanostructures and biological samples are research hotspots in the fields of biomedicine and nanophotonics. However, because of the diffraction limit of light, traditional optical tweezers and microscopy are difficult to use to trap and observe objects smaller than 200 nm. Near-field scanning probes, metamaterial superlenses, and photonic crystals have been designed to overcome the diffraction limit, and thus are used for nanoscale optical trapping, sensing, and imaging. Additionally, photonic nanojets that are simply generated by dielectric microspheres can break the diffraction limit and enhance optical forces, detection signals, and imaging resolution. In this review, we summarize the current types of microsphere lenses, as well as their principles and applications in nano-optical trapping, signal enhancement, and super-resolution imaging, with particular attention paid to research progress in photonic nanojets for the trapping, sensing, and imaging of biological cells and tissues.

scholarly journals Tunable optical forces enhanced by plasmonic modes hybridization in optical trapping of gold nanorods with plasmonic nanocavity

2018 ◽  
Vol 26 (5) ◽  
pp. 6202 ◽  
Author(s):  
Wen-Hao Huang ◽  
Shun-Feng Li ◽  
Hai-Tao Xu ◽  
Zheng-Xun Xiang ◽  
Yong-Bing Long ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Optical Trapping ◽  
Optical Forces

scholarly journals Optical Manipulation with Plasmonic Beam Shaping Antenna Structures

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Young Chul Jun ◽  
Igal Brener
Keyword(s):  
Optical Trapping ◽  
Near Field ◽  
Beam Shaping ◽  
Optical Force ◽  
Metal Nanostructures ◽  
Optical Manipulation ◽  
Far Field ◽  
Optical Forces ◽  
Optical Components

Near-field optical trapping of objects using plasmonic antenna structures has recently attracted great attention. However, metal nanostructures also provide a compact platform for general wavefront engineering of intermediate and far-field beams. Here, we analyze optical forces generated by plasmonic beam shaping antenna structures and show that they can be used for general optical manipulation such as guiding of a dielectric particle along a linear or curved trajectory. This removes the need for bulky diffractive optical components and facilitates the integration of optical force manipulation into a highly functional, compact system.

Scaling of optical forces on Au–PEG core–shell nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93139-93146 ◽  
Author(s):  
Donatella Spadaro ◽  
Maria A. Iatì ◽  
Maria G. Donato ◽  
Pietro G. Gucciardi ◽  
Rosalba Saija ◽  
...  
Keyword(s):  
Optical Trapping ◽  
Core Shell ◽  
Optical Forces ◽  
Polymer Particles ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Optical trapping of hybrid core–shell gold–polymer particles is studied.

Influences of the Inserted Angle of an Optical Fiber for an Optical Trapping

2012 ◽  
Vol 523-524 ◽  
pp. 1053-1058
Author(s):  
Nobuyuki Watanabe ◽  
Kozo Taguchi
Keyword(s):  
Laser Beam ◽  
Optical Fiber ◽  
Optical Trapping ◽  
Axial Direction ◽  
Optical Force ◽  
Radius Of Curvature ◽  
Optical Forces ◽  
System A ◽  
Sample Chamber ◽  
Pulling Force

Biological cell could be trapped by a single laser beam from an optical fiber end inserted at an angle to a sample chamber. We have already developed an optical trapping system. A temperature stabilized 1480nm cw diode laser was used as the light source. The fiber end had a hemispherical micro-lens with 5μm radius of curvature for focusing the laser beam. These trapping fibers were inserted into a sample cell at an angle. The microsphere, 10μm diameter particle (refractive index 1.4), could be trapped. We theoretically analyzed the optical forces exerted on a microsphere by laser beams. The optical force on a microsphere divides itself into two components, the force in the beam axial direction of the light and a transverse force. The transverse optical force acted to pull the sphere back. We investigated the relation between the pulling force and the inserted angle of an optical fiber into a sample chamber. The microsphere is trapped at the point where the horizontal directed optical forces are balanced. We theoretically verified that the inserted angle of an optical fiber into a sample chamber was important parameter. It was found that a small inserted angle produced a weak pulling force.

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