scholarly journals The hand of light for micro/nano-particle manipulation: research progress of optical tweezers

2020 ◽  
Vol 37 (5) ◽  
pp. 441-458
Author(s):  
Changjun MIN ◽  
Yunqi YUAN ◽  
Yuquan ZHANG ◽  
Xianyou WANG ◽  
Zhibin ZHANG ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Research Progress ◽  
Nano Particle ◽  
Particle Manipulation

scholarly journals Optical vortex lattice: an exploitation of orbital angular momentum

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Liuhao Zhu ◽  
Miaomiao Tang ◽  
Hehe Li ◽  
Yuping Tai ◽  
Xinzhong Li
Keyword(s):  
Angular Momentum ◽  
Optical Tweezers ◽  
Orbital Angular Momentum ◽  
Vortex Lattice ◽  
Optical Vortex ◽  
Yeast Cells ◽  
Particle Manipulation ◽  
Complex Motion ◽  
Potential Applications ◽  
Vortex Beams

Abstract Generally, an optical vortex lattice (OVL) is generated via the superposition of two specific vortex beams. Thus far, OVL has been successfully employed to trap atoms via the dark cores. The topological charge (TC) on each optical vortex (OV) in the lattice is only ±1. Consequently, the orbital angular momentum (OAM) on the lattice is ignored. To expand the potential applications, it is necessary to rediscover and exploit OAM. Here we propose a novel high-order OVL (HO-OVL) that combines the phase multiplication and the arbitrary mode-controllable techniques. TC on each OV in the lattice is up to 51, which generates sufficient OAM to manipulate microparticles. Thereafter, the entire lattice can be modulated to desirable arbitrary modes. Finally, yeast cells are trapped and rotated by the proposed HO-OVL. To the best of our knowledge, this is the first realization of the complex motion of microparticles via OVL. Thus, this work successfully exploits OAM on OVL, thereby revealing potential applications in particle manipulation and optical tweezers.

Research Progress of New Methods for Toughening Epoxy Resin

2012 ◽  
Vol 490-495 ◽  
pp. 3598-3602 ◽  
Author(s):  
Li Ying Guo ◽  
Li Yan Wang ◽  
Xin Su
Keyword(s):  
Epoxy Resin ◽  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Research Progress ◽  
Nano Particle ◽  
Technology Research ◽  
Future Prospects ◽  
Thermoplastic Resin ◽  
Rigid Polymer ◽  
New Methods

The epoxy is a thermosetting resin, for the lack of toughness after cured ,a brief introduction of epoxy resin toughening technology research progress, detailed in the recent years a number of toughening epoxy resins new methods, including toughened thermoplastic resin, IPN toughening, core-shell particle toughening, thermotropic liquid crystalline toughness, rigid polymer toughening, nano-particle toughening and so on. At last, the paper provided an overview of the progress of epoxy toughening modification technology and its future prospects.

Micro and Nano Particle Manipulation Using Optically Modulated Electrokinetic Flows

2009 ◽  
Author(s):  
Stuart J. Williams ◽  
Aloke Kumar ◽  
Steven T. Wereley
Keyword(s):  
Surface Modification ◽  
Parallel Plate ◽  
Near Infrared ◽  
Lab On A Chip ◽  
Nano Particle ◽  
Particle Manipulation ◽  
Physical Mechanisms ◽  
Particle Sorting ◽  
Electrokinetic Flows ◽  
Optically Induced

Recently, we have demonstrated an optically induced AC electrokinetic technique that rapidly, continuously and selectively concentrates colloids on an electrode surface [1–3]. This is demonstrated with a highly focused near-infrared (1,064 nm) laser beam applied to parallel plate electrodes separated by 50 μm without any additional surface modification or patterning of the electrodes. This dynamic optically-induced technique can be applied towards a variety of lab-on-a-chip applications. This paper will explain its physical mechanisms and showcase recent results regarding its particle sorting capabilities. This dynamic, optically induced fluid and particle manipulation technique could be used for a variety of lab-on-a-chip applications.

Flexible particle manipulation techniques with conical refraction-based optical tweezers

2012 ◽  
Author(s):  
C. McDougall ◽  
Robert Henderson ◽  
David J. Carnegie ◽  
Grigorii S. Sokolovskii ◽  
Edik U. Rafailov ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Particle Manipulation ◽  
Conical Refraction

scholarly journals Review on fractional vortex beam

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hao Zhang ◽  
Jun Zeng ◽  
Xingyuan Lu ◽  
Zhuoyi Wang ◽  
Chengliang Zhao ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Theoretical Models ◽  
Optical Devices ◽  
Vortex Beam ◽  
Edge Enhancement ◽  
Particle Manipulation ◽  
Complex Phase ◽  
Communication Capacity ◽  
Vortex Beams ◽  
New Research

Abstract As an indispensable complement to an integer vortex beam, the fractional vortex beam has unique physical properties such as radially notched intensity distribution, complex phase structure consisting of alternating charge vortex chains, and more sophisticated orbital angular momentum modulation dimension. In recent years, we have noticed that the fractional vortex beam was widely used for complex micro-particle manipulation in optical tweezers, improving communication capacity, controllable edge enhancement of image and quantum entanglement. Moreover, this has stimulated extensive research interest, including the deep digging of the phenomenon and physics based on different advanced beam sources and has led to a new research boom in micro/nano-optical devices. Here, we review the recent advances leading to theoretical models, propagation, generation, measurement, and applications of fractional vortex beams and consider the possible directions and challenges in the future.

scholarly journals Applications of Optically Controlled Gold Nanostructures in Biomedical Engineering

2021 ◽  
Vol 8 ◽  
Author(s):  
Pisrut Phummirat ◽  
Nicholas Mann ◽  
Daryl Preece
Keyword(s):  
Optical Tweezers ◽  
Single Molecule ◽  
Biomedical Engineering ◽  
Research Progress ◽  
Future Directions ◽  
Potential Applications ◽  
Low Cytotoxicity ◽  
Microscopic World ◽  
Gold Nanomaterials ◽  
Optically Trapped

Since their inception, optical tweezers have proven to be a useful tool for improving human understanding of the microscopic world with wide-ranging applications across science. In recent years, they have found many particularly appealing applications in the field of biomedical engineering which harnesses the knowledge and skills in engineering to tackle problems in biology and medicine. Notably, metallic nanostructures like gold nanoparticles have proven to be an excellent tool for OT-based micromanipulation due to their large polarizability and relatively low cytotoxicity. In this article, we review the progress made in the application of optically trapped gold nanomaterials to problems in bioengineering. After an introduction to the basic methods of optical trapping, we give an overview of potential applications to bioengineering specifically: nano/biomaterials, microfluidics, drug delivery, biosensing, biophotonics and imaging, and mechanobiology/single-molecule biophysics. We highlight the recent research progress, discuss challenges, and provide possible future directions in this field.

Vaccum Optical Tweezers System and its Research Progress in Precision Measurement

2021 ◽  
Vol 48 (4) ◽  
pp. 0401011
Author(s):  
韩翔 Han Xiang ◽  
陈鑫麟 Chen Xinlin ◽  
熊威 Xiong Wei ◽  
邝腾芳 Kuang Tengfang ◽  
陈志洁 Chen Zhijie ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Precision Measurement ◽  
Research Progress

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.

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