Optofluidics

Complex light beams realized by phase modulation techniques represent a versatile tool in several fields of optics as the material structuring at small scales and the optical manipulation of micro-objects. Soft matter based micro-particles, with controlled supramolecular structure, studied by implementation of optical trapping, lead to new opto-mechanical properties.

Structured light fields for optical control and manipulation

Methods to generate structured light fields are studied: light patterns and complex vectorial beams are realized by using optical phase modulation by means of polarization holograms. Taking advantage of the diffraction properties, the high efficiency, and the intrinsic achromaticity of the polarization holograms, the method overcome the limitations related to stability and efficiency, making it attractive for applications. These light fields coupled with photosensitive soft materials are used to investigate manifold new optical effects: perform materials structuring; design defects architectures in materials; optical manipulation of micro-objetcs.

Keywords: Complex and vector beams; vectorial light patterns; optical tweezers

Main collaborations:

Ruiz, Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Messico

Yu. Reznikov Istituto di Fisica dell’Accademia Nazionale delle Scienze dell’Ucraina, Kiev, Ucraina

Images from ref. 1

Chiral microdroplets/microparticles optofluidics

Optical studies of chiral microparticles combine soft matter science with both photonics and optical manipulation. The particles are made by liquid crystalline polymer and are realized by controlling both the internal structure and the surface features. They constitute spherical microresonators suitable for several applications in photonics such as lasing. These microparticles enable the implementation of new strategies for optical trapping. Investigations on their opto-mechanical properties have shown that several kinds of optical manipulation (trapping, rotation and orbiting motion) are realized by means of the spin angular momentum transfer from photons to micro-particles.

Keywords: Photopolymerization; optical polarized and confocal microscopies; optical manipulation by complex beams

Main collaborations:Volke-Sepulveda Institute of Physics, National Autonomous University of Mexico

O.M. Maragò, CNR-IPCF Messina

Facilities & Labs

BeyondNano @ Rende (CS)

People

Viso_donnaGabriella

Cipparrone

Associate Professor

Alfredo_MazzullaAlfredo

Mazzulla

CNR Researcher

Pasquale_PagliusiPasquale

Pagliusi

Associate Professor

Publications

  1. M. G. Donato, A. Mazzulla, P. Pagliusi, Magazzù, J. Hernandez, C. Provenzano, P. G. Gucciardi, O. M. Maragò, G. Cipparrone Light-induced rotations of chiral birefringent microparticles in optical tweezers. SCIENTIFIC REPORTS (Nature Publishing Group) 6, 31977 (2016) ISSN 2045-2322 DOI: 10.1038/srep31977
  2. J. Hernandez, C. Provenzano, A. Mazzulla, P. Pagliusi, G. Cipparrone Cholesteric solid micro-particles: fundamentals, chiral optomechanics and microphotonics. LIQUID CRYSTALS REVIEW 4, 59-79 (2016) ISSN: 2045-2322 DOI: 10.1080/21680396.2016.1193065
  3. J. Hernandez, A. Mazzulla, C. Provenzano, P. Pagliusi, G. Cipparrone Chiral resolution of linearly polarized and unpolarized light mediated by spin angular momentum transfer, SCIENTIFIC REPORTS (Nature Publishing Group) 5, 16926, (2015) ISSN 2045-2322, DOI: 10.1038/srep16926
  4. G. Donato, J Hernandez, A. Mazzulla, C Provenzano, R Saija, R Sayed, S Vasi, A Magazzù, P Pagliusi, R Bartolino, P G Gucciardi, O M Maragò, G Cipparrone Polarization-dependent optomechanics mediated by chiral microresonators. NATURE COMMUNICATIONS 5, 3656, (2014) ISSN: 2041-1723, DOI: 10.1038/ncomms4656
  5. C. Provenzano, A. Mazzulla, P. Pagliusi, M.P. De Santo, G. Desiderio, I. Perrotta, G. Cipparrone Self-organized internal architectures of chiral micro-particles. APL MATERIALS 2, 022103, (2014) ISSN: 2166-532X, DOI: 10.1063/1.4863837
  6. J. Hernández, A. Mazzulla, A. Pane, K. Volke-Sepulveda, G. Cipparrone Attractive-repulsive dynamics on light-responsive chiral microparticles induced by polarized tweezers. LAB ON A CHIP 13, 459-467, (2013) ISSN: 1473-0197, doi: 10.1039/C2LC40703E
  7. U. Ruiz, P. Pagliusi, C. Provenzano and G. Cipparrone Highly efficient generation of vector beams through polarization holograms. APPL. PHYS. LETT. 102, 161104 (2013)Doi:10.1063/1.4801317
  8. U. Ruiz, P. Pagliusi, C. Provenzano, K. Volke-Sepúlveda, and Gabriella Cipparrone Polarization holograms allow highly efficient generation of complex light beams. Optics Express 21 7505-7510 (2013) doi: 10.1364/OE.21.007505
  9. D. Lysenko, P. Pagliusi, C. Provenzano, Yu. Reznikov, K. Slyusarenko and G. Cipparrone Periodic defects lines in liquid crystal cell guided by polarization holograms at an aligning surface. APPL. PHYS. LETT. 103, 151913 (2013); Doi: 10.1063/1.4824880
  10. G. Cipparrone, A. Mazzulla, A. Pane, R.J. Hernandez, R. Bartolino Chiral Self-assembled Solid Microspheres: a Novel Multifunctional Microphotonic Device. ADVANCED MATERIALS 23, 5773-5778, (2011) ISSN: 0935-9648, doi: 10.1002/adma.201102828

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September 14-22, 2019

 

Science coffee. Tre scienziate si raccontano: Luisa Torsi, Loretta L del Mercato, Eva Degl'Innocenti Bari - Fiera del Levante, 20 settembre 2019 - 17.30

Luisa Torsi, chimica, docente all’Università degli Studi di Bari e alla ABO Akademi University in Finlandia, tra le protagoniste della mostra della Fondazione Bracco . Loretta L del Mercato, biotecnologa - Ricercatrice CNR Nanotec. Esperta nell’uso delle nanotecnologie applicate in campo biomedico. Attualmente la ricerca si concentra sullo sviluppo di modelli cellulari di tumore del pancreas che consentano di testare l'efficacia di diverse terapie anticancro. Coordina il progetto ERC-StG “INTERCELLMED” finanziato dal Consiglio europeo della ricerca (Erc). Eva Degl'Innocenti, Direttrice MARTA di Taranto [/vc_column_text][/vc_column][/vc_row]

ICONS - A Symposium on Colloidal Nanocrystals

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October 10-11, 2019

 

Cnr Nanotec Lecce

 

The symposium focuses on colloidal semiconductor nanocrystals (also known as quantum dots), which are a central topic in materials science and nanotechnology nowadays. The event will bring together renowned scientists in this research field discussing on fundamentals and future directions of this promising class of materials.  The program consists of two half-day sessions with four talks each covering synthesis, characterization, properties, and applications of colloidal semiconductor nanocrystals. The detailed program will be soon available.

The symposium is intended for anyone that is interested on this topic and will be free of charge. Attendees may present their own work in the dedicated poster session. Registration, with an eventual abstract submission for poster presentation, is required (please, send an e-mail to:   carlo.giansante@nanotec.cnr.it). The event is co-organized by Consiglio Nazionale delle Ricerche - Istituto di Nanotecnologia and Istituto Italiano di Tecnologia.

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