Nanomaterial-Enhanced Graphene Gas Sensor Platform (with SmartSense B.V.)

Graphene-based sensors are among the most promising candidates for next-generation gas sensing technologies. Their exceptional charge carrier mobility and atomic-scale thickness allow direct transduction of surface interactions into electrical signals. However, pristine graphene often exhibits limited selectivity and sensitivity toward specific gas molecules due to its chemically inert surface.

This MSc thesis project, conducted in collaboration with SmartSense B.V., focuses on functionalizing graphene with nanomaterials to enhance its sensitivity and selectivity for target gases such as ethylene and ammonia. By combining graphene’s electrical transduction capabilities with the catalytic or adsorptive properties of metal or metal-oxide nanoparticles, the project aims to create a high-performance, tunable gas sensor platform suitable for real-world applications in agriculture and environmental monitoring.

The candidate will work both at TU Delft and at SmartSense’s R&D facility, gaining practical experience in nanomaterial processing, sensor integration, and data-driven performance analysis.

Assignment

This experimental research project will include:

1. Literature review:
   Comprehensive study of graphene-based gas sensors and nanomaterial functionalization strategies.
2. Design and integration:
   Development of a workflow to deposit and integrate nanomaterials on graphene devices while preserving their electrical integrity.
3. Fabrication and optimization:
   Preparation of GFET devices and systematic optimization of nanomaterial deposition parameters.
4. Characterization:
   Structural and morphological characterization using:
   • Atomic Force Microscopy (AFM)
   • Scanning Electron Microscopy (SEM)
   • Raman spectroscopy
   • X-ray Photoelectron Spectroscopy (XPS)
5. Electrical and gas sensing tests:
   Performance evaluation under exposure to target gases at controlled concentrations and environmental conditions.
6. Data analysis and reporting:
   Quantitative assessment of sensitivity, selectivity, and response dynamics, supported by periodic progress reports and a final thesis document.

Requirements

• Motivation to work at the interface of nanotechnology, materials science, and sensor engineering.
• Ability to work independently and collaboratively in both academic and industrial environments.
• Strong experimental and analytical skills.
• Curiosity-driven mindset and interest in translating lab research into practical applications.

Contact

Last modified: 2025-12-09