Size-Scaling in Optical Trapping of Silicon Nanowires

Irrera, Alessia; Artoni, Pietro; Saija, Rosalba; Gucciardi, P. G.; Iatí, Maria Antonia; Borghese, Ferdinando; Denti, P.; Iacona, Fabio; Priolo, F.; Maragó, Onofrio M.

doi:10.1021/nl202733j

Cited by 65 publications

(91 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solving the Langevin equation for rotation yields a similar form of the power spectrum from which the restoring torque constant can be extracted. From previous work analysing autocorrelation data it is noted that the characteristic frequency for rotation is somewhat smaller compared with the translation motion and thus is not resolvable in these measurements [17].…”

mentioning

confidence: 89%

Nonconservative dynamics of optically trapped high-aspect-ratio nanowires

et al. 2016

View full text Add to dashboard Cite

We investigate the dynamics of high aspect ratio nanowires trapped axially in a single gradient force optical tweezers. A power spectrum analysis of the Brownian dynamics reveals a broad spectral resonance of the order of a kHz with peak properties that are strongly dependent on the input trapping power. Modelling of the dynamical equations of motion of the trapped nanowire that incorporate non-conservative effects through asymmetric coupling between translational and rotational degrees of freedom provides excellent agreement with the experimental observations. An associated observation of persistent cyclical motion around the equilibrium trapping position using winding analysis provides further evidence for the influence of non-conservative forces.

show abstract

mentioning

confidence: 89%

Nonconservative dynamics of optically trapped high-aspect-ratio nanowires

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Many experiments have been done by using these analytical optical tweezers in many fields of research, namely: physics, biology, nanotechnology, and materials science. In recent time, manipulation, rotation and assembly of different kinds of nanostructures [7,8], such as carbon nanotubes [9], nanowires [10,11], and polymer nanofibers [12], have been also done by using the optical tweezers technique. Also, they have used to manipulate living cells [13][14][15][16] and to investigate the motility and flagellar rotation of single bacterial cells [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Quantitative optical trapping and optical manipulation of micro-sized objects

Sayed¹

2017

Semicond. Phys. Quantum Electron. Optoelectron.

View full text Add to dashboard Cite

Abstract. An optical tweezers technique is used for ultraprecise micromanipulation to measure positions of micrometer scale objects with a precision down to the nanometer scale. It consists of a high performance research microscope with motorized scanning stage and sensitive position detection system. Up to 10 traps can be used quasisimultaneously. Non photodamage optical trapping of Escherichia coli (E. coli) bacteria cells of 2 µm in length, as an example of motile bacteria, has been shown in this paper. Also, efficient optical trapping and rotation of polystyrene latex particles of 3 µm in diameter have been studied, as an optical handle for the pick and place of other tiny objects. A fast galvoscanner is used to produce multiple optical traps for manipulation of micro-sized objects and optical forces of these trapped objects quantified and measured according to explanation of ray optics regime. The diameter of trapped particle is bigger than the wavelength of the trapping laser light. The force constant (k) has been determined in real time from the positional time series recorded from the trapped object that is monitored by a CCD camera through a personal computer.

show abstract

“…11 While optical tweezers has been widely applied to the task of nanoparticle manipulation, [12][13][14][15][16][17] there is increasing interest in techniques for promoting self-organisation. 18,19 Optical binding offers one such possibility.…”

Section: Introductionmentioning

confidence: 99%

Optical binding between knotted and chiral nanoparticles

Simpson

Hanna

2016

SPIE Proceedings

View full text Add to dashboard Cite

General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. ABSTRACTOptical binding occurs when systems of both dielectric particles are illuminated by intense light fields, and results in the formation of clusters and coupled dynamical behaviour. Optical binding between spheres has been studied extensively, but little has appeared in the literature describing binding in lower symmetry systems. Here we discuss computer simulations of optical binding between hypothetical knotted nanowires. The knots chosen are drawn from the class of knots known as torus knots which may be represented with n-fold chiral rotational symmetry. We examine the binding properties of the knots in circularly polarised counter propagating beams.

show abstract

Size-Scaling in Optical Trapping of Silicon Nanowires

Cited by 65 publications

References 41 publications

Nonconservative dynamics of optically trapped high-aspect-ratio nanowires

Nonconservative dynamics of optically trapped high-aspect-ratio nanowires

Quantitative optical trapping and optical manipulation of micro-sized objects

Optical binding between knotted and chiral nanoparticles

Contact Info

Product

Resources

About