Skip to Main content Skip to Navigation
Theses

Propriétés optiques et thermoplasmoniques de réseaux de nanocylindres : applications à la détection de molécules et de micro-objets

Abstract : Raman spectroscopy is a technique that is non-invasive, non-destructive, allowing the identification of the molecules contained in a solid, liquid or gaseous sample. However it suffers from one major drawback : low sensitivity. This limit is now about to be pushed through the fast growth of SERS (Surface Enhanced Raman Scattering). This phenomenon has been already implemented successfully in various applications : biomedical, biology, analytical chemistry,environmental science... However, despite a growing number of scientific works, some aspects of the SERS sensors still need to be studied. This work focused on the study of the near-field and the far-field properties of arrays of nanocylinders for the detection of organic compounds. The studied parameters are the period of the array, the diameter of the cylinders, but also the material constituting the nanoparticle as the adhesion layer. The study of optical properties naturally led us to investigate the phenomenon of absorption. The incident light energy is converted into heat. The nanocylindres then behave like nanosources of heat. Thus, part of this work focused on the effects of thermoplasmonics. One of the applications that we demonstrated is the ability to manipulate the micro-objets, thanks to the control of the phenomena of advections.
Complete list of metadatas

Cited literature [258 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01915613
Contributor : Abes Star :  Contact
Submitted on : Wednesday, November 7, 2018 - 5:53:05 PM
Last modification on : Saturday, February 15, 2020 - 2:02:25 AM
Long-term archiving on: : Friday, February 8, 2019 - 3:44:26 PM

File

edgalilee_th_2017_colas.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01915613, version 1

Collections

Citation

Florent Colas. Propriétés optiques et thermoplasmoniques de réseaux de nanocylindres : applications à la détection de molécules et de micro-objets. Micro et nanotechnologies/Microélectronique. Université Sorbonne Paris Cité, 2017. Français. ⟨NNT : 2017USPCD039⟩. ⟨tel-01915613⟩

Share

Metrics

Record views

258

Files downloads

217