Title :

MoS₂-graphene hybrid nanostructures enhanced localized surface plasmon resonance biosensors

Author(s) :

El Barghouti, Mohamed [Auteur]
AKJOUJ, ABDELLATIF [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]
Mir, Abdellah [Auteur]

Journal title :

Optics and Laser Technology

Pages :

106306

Publisher :

Elsevier

Publication date :

2020-10

ISSN :

0030-3992

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

We propose a new configuration of a localized surface plasmon resonance (LSPR) biosensor that is based on MoS₂-graphene hybrid structures for ultrasensitive detection of molecules. The performance parameters of ...
Show more >We propose a new configuration of a localized surface plasmon resonance (LSPR) biosensor that is based on MoS₂-graphene hybrid structures for ultrasensitive detection of molecules. The performance parameters of the proposed biosensor are defined in terms of absorption and sensitivity. Our study show that sensitivity can be greatly increased either by adding a bilayer MoS₂/graphene on the Au nanoparticles or by adding the MoS₂ layer or the graphene layer on the surface of the Au nanoparticles. The absorption curves for the proposed LSPR biosensor are analyzed and compared with the conventional biosensors without MoS₂/graphene. By optimizing the structure of the sensor, we find that the sensitivity as high as 360 nm/RIU can be achieved with 8-layers of MoS₂ and 10-layers of graphene. In addition, we show that the sensitivity can be controlled by changing the number of the monolayer of MoS₂ and/or graphene. Finally, we show that this sensor can detect successfully impure water after absorption of target single-stranded DeoxyriboNucleic Acid (ssDNA) biomolecules.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL