Aller au menu Aller au contenu
Grenoble INP
Physico chemistry of solids, thin films, biotechnologies
Applications for micro & nano- technologies, energy, health ...

Seminar LMGP - 24/10/2017 - Maxime LEGALLAIS

Published on September 18, 2017
A+Augmenter la taille du texteA-Réduire la taille du texteImprimer le documentTélécharger au format PDFEnvoyer cette page par mail Partagez cet article Facebook Twitter Linked In Google+ Viadeo
Seminar October 24, 2017
2:00 pm - 2nd floor - seminar room
Grenoble INP - Phelma
Laboratoire LMGP
3 parvis Louis Néel - 38000 Grenoble
Accès : TRAM B arrêt Cité internationale
Free entrance - No registration

Design, study and modeling of a new generation of silicon nanowire transistors for biosensing applications

LE GALLAIS-M-200.jpg

LE GALLAIS-M-200.jpg

Maxime LEGALLAIS - PhD student LMGP - IMEP-LaHC

Abstract
A nanonet exhibits remarkable properties which arises from, not only, the intrinsic properties of each nanostructure but also from their assembly into network which makes them particularly attractive for various applications, notably in the field of optics, electronics or even biomedical. During this Ph.D. work, silicon nanowire-based nanonets were integrated for the first time into field effect transistors with a back gate configuration. The developed technological process is perfectly suitable with a large-scale and massive production of these devices at low cost without exceeding a thermal budget of 400°C. Major technological breakthroughs were achieved through the control of the sintering of nanowire junctions, the contact silicidation and the nanowire passivation with alumina. The as-fabricated nanonet transistors display outstanding, air stable and reproducible electrical characteristics which can compete with single nanowire-based devices. An in-depth study of percolation using experimental measurements and Monte-Carlo simulations highlighted that the conduction limitation by nanowire junctions allow to enhance drastically the electrical performances. After device integration into biosensors, it has been shown that transistors are electrically sensitive to DNA hybridization.

Beneficiating from a fabrication process compatible with the microelectronic industry, a 3D integration of these nanonet-based transistors onto a readout circuit can therefore be envisioned which opens new avenues for portable biosensors, allowing direct and label-free detection of DNA. Furthermore, mechanical flexibility and optical transparency offer other opportunities in flexible electronic field.

A+Augmenter la taille du texteA-Réduire la taille du texteImprimer le documentTélécharger au format PDFEnvoyer cette page par mail Partagez cet article Facebook Twitter Linked In Google+ Viadeo

Written by Michele San Martin

Date of update September 18, 2017

Communauté Université Grenoble Alpes
×
To improve the quality of this site and the service rendered to the user, we use cookies audience measurement. By continuing your visit to this site, you agree to our use of cookies for this purpose. More