Nanoparticle decoration of graphene for enhanced gas sensing

The unique properties of chemically-synthesized nanoparticles are out of reach for top-down nanofabrication techniques alone. Systematic and reproducible harnessing of such properties calls for hybrid fabrication methods, enabling a high degree of spatial nanoparticle organization and assembly yield. The latter are essential to tailor the integration of nanoscale components within advanced nanoelectronic devices. In particular, graphene-based sensing can be significantly enhanced by the controlled integration of nanoparticle arrays or monolayers.

Topographically-templated capillary assembly of nanoparticles is a simple and powerful technique to selectively place single nanoparticles in targeted substrate locations pre-specified by topographical features. Recent advances have shown that the technique can achieve ultimate control in terms of placement, spatial selectivity and assembly yield.

This project aims at decorating graphene substrates with predetermined nanoparticle arrays to enable the deployment of graphene-based gas sensors of enhanced sensitivity and selectivity.

Assignment

This experimental project will involve:
• an extensive review of the related state-of-the-art;
• the design, assembly and characterisationof a flow coating setup for capillary nanoparticle deposition;
• the templating of graphene substrates with topographical or chemical patterns;
• the performance and characterisation of the capillary nanoparticle assembly process;
• comprehensive reporting of the full experimental work.

Requirements

You are an ambitious hands-on master student from mechanical engineering, materials science or (applied) physics. You have good communication skills in English, you are independent and also a team player. The graduation project will have a total duration of 9 to 12 months.

If you are eager to work in a motivating atmosphere with highly skilled colleagues, then send us your CV!

Contact

dr. Massimo Mastrangeli

Electronic Components, Technology and Materials Group

Department of Microelectronics

Last modified: 2019-10-11