Title :

Tunneling mechanism and contact mechanics of colloidal nanoparticle assemblies

Author(s) :

Biaye, Moussa [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Zbydniewska, Ewa [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Melin, Thierry [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Deresmes, D. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Copie, Guillaume [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Cleri, Fabrizio [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Sangeetha, Neralagatta [Auteur]
Laboratoire de physique et chimie des nano-objets [LPCNO]
Decorde, Nicolas [Auteur]
Laboratoire de physique et chimie des nano-objets [LPCNO]
Viallet, Benoit [Auteur]
Laboratoire de physique et chimie des nano-objets [LPCNO]
Grisolia, Jérémie [Auteur]
Laboratoire de physique et chimie des nano-objets [LPCNO]
Ressier, Laurence [Auteur]
Laboratoire de physique et chimie des nano-objets [LPCNO]
Diesinger, Heinrich [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Nanotechnology

Pages :

475502

Publisher :

Institute of Physics

Publication date :

2016-11-25

ISSN :

0957-4484

HAL domain(s) :

Chimie

English abstract : [en]

Nanoparticle assemblies with thiol-terminated alkyl chains are studied by conducting atomic force microscopy (c-AFM) regarding their use as strain gauges for touch-sensitive panels. Current–force spectroscopy is used as a ...
Show more >Nanoparticle assemblies with thiol-terminated alkyl chains are studied by conducting atomic force microscopy (c-AFM) regarding their use as strain gauges for touch-sensitive panels. Current–force spectroscopy is used as a characterization tool complementary to the macroscopic setup since it allows a bias to be applied to a limited number of junctions, overcoming the Coulomb blockade energy and focusing on the contact electromechanics and the transport mechanism across the ligand. First, transition voltage spectroscopy is applied with varying force to target the underlying tunneling mechanism by observing whether the transition between the ohmic and exponential current–voltage behavior is force-dependent. Secondly, current–force spectroscopy in the ohmic range below the transition voltage is performed. The current–force behavior of the AFM probe in contact with a nanoparticle multilayer is associated with the spread of force and current within the nanoparticle lattice and at the level of adjacent particles by detailed contact mechanics treatment. The result is twofold: concerning the architecture of sensors, this work is a sample case of contact electromechanics at scales ranging from the device scale down to the individual ligand molecule. Regarding transport across the molecule, the vacuum tunneling mechanism is favored over the conduction by coherent molecular states, which is a decision-making aid for the choice of ligand in applications.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

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

Source :

Harvested from HAL