Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Photonic nanojets in optical tweezers

Full text
Author(s):
Ranha Neves, Antonio Alvaro [1]
Total Authors: 1
Affiliation:
[1] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas, BR-09210170 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER; v. 162, n. SI, p. 122-132, SEP 2015.
Web of Science Citations: 15
Abstract

Photonic nanojets have been brought into attention ten years ago for potential application in ultramicroscopy, because of its sub-wavelength resolution that can enhance detection and interaction with matter. For these novel applications under development, the optical trapping of a sphere acts as an ideal framework to employ photonic nanojets. In the present study, we generated nanojets by using a highly focused incident beam, in contrast to traditional plane waves. The method inherits the advantage of optical trapping, especially for intracellular applications, with the microsphere in equilibrium on the beam propagation axis and positioned arbitrarily in space. Moreover, owing to optical scattering forces, when the sphere is in equilibrium, its center shifts with respect to the focal point of the incident beam. However, when the system is in stable equilibrium with a configuration involving optical tweezers, photonic nanojets cannot be formed. To overcome this issue, we employed double optical tweezers in an unorthodox configuration involving two collinear and co-propagating beams, the precise positioning of which would turn on/off the photonic nanojets, thereby improving the applicability of photonic nanojets. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/07191-9 - 10th International Conference Series on Laser-light and Interactions with Particles
Grantee:Antonio Alvaro Ranha Neves
Support type: Research Grants - Meeting - Abroad