Evolution of plasmonic extinction, modulated by magnetic field

Axe 2 - Matériaux multifonctionnels et environnement

Post-doctorat de Brigita Rozic

Current position : Research assistant, Condensed Matter Physics Department (F5), Jožef Stefan Institute (JSI), Ljubljana, Slovenia

Laboratoires co-porteurs

• Institut des NanoSciences de Paris (INSP)
  Porteuse de projet : Emmanuelle Lacaze
• Physicochimie des Electrolytes et Nanosystèmes interfaciaux (PHENIX - ancien PECSA)
  Autres encadrants : Vincent Dupuis, Jérôme Fresnais

Résumé

• study the impact on the plasmon resonance of embedding gold nanorods (GNRs) and magnetic nanoparticles (MNPs) in smectic liquid crystals (LCs) and in elastomeric polydimethylsiloxane (PDMS)
• synthesis and functionalisation of magnetic NPs 
• study the influence of the magnetic field on the self-organization of the MNPs in hybrid systems (LCs and GNRs) and consequently on the plasmon resonance
• in the presence of arrays of smectic defects and GNRs create chains of nanorods with a highly anisotropic localized surface plasmon resonance (LSPR)
• study the influence of the stretching of the polymeric matrix with gold nanorods on the GNRs LSPR
• GNRs will be provided by research groups from Germany and USA

Publications

• Brigita Rožič, Jérôme Fresnais, Celine Molinaro, Joseph Calixte, Shivakumar Umadevi et al. 
  Oriented Gold Nanorods and Gold Nanorod Chains within Smectic Liquid Crystal Topological Defects
  ACS Nano, American Chemical Society, 2017, 11 (7), pp.6728-6738.
  DOI : 10.1021/acsnano.7b01132〉
  Ref Hal : hal-01551477v1
• Maja Trček, George Cordoyiannis, Brigita Rožič, Vassilios Tzitzios, George Nounesis et al. 
  Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host
  Liquid Crystal, Taylor & Francis, 2017, 44 (10), pp.1575-1581
  DOI : 10.1080/02678292.2017.1306887
  Ref HAL : hal-01527841v1

Conférences, séminaires

• JMC14-CMD25 - August 2014 in Paris
  Oral presentation : Soft materials as plasmonic systems
• Seminar at Physico-chimie et dynamique des surfaces Institut des NanoSciences de Paris (INSP), UPMC, Paris, France - 9th October 2015
  Presentation: Control in Localized Surface Plasmon Resonance of Gold Nanorods by using Liquid Crystal and Elastomeric material  
• ECLC 2015 - 7-11 September 2015
  Manchester, UK
  Oral presentation: Control in localized surface plasmon resonance of gold nanorods by using liquid crystal material  
• 6th Workshop on Liquid Crystals for Photonics -14-16 September 2016
  Ljubljana, Slovenia
  Poster presentation: Controlling the optical properties of gold nanorods by using liquid crystal materials  
• 7th Workshop on Liquid Crystals for Photonics, WLCP 2018, 17-21 September 2018
  Jastrzębia Góra, Poland
  Oral presentation: Oriented gold nanorods and gold nanorod chains within smectic liquid crystal topological defects