Work

Filterless non-dispersive infra-red gas detection: A proof of concept

Year: 2017

Type: conference-paper

Abstract: For the first time, we demonstrate the detection of carbon dioxide (CO2) using a non-dispersive infra-red (NDIR) technique that does not require an expensive CMOS-incompatible optical filter. This is achieved by employing a differential IR thermopile detector with micro-engineered (plasmonic) optical properties, fabricated in a commercially available standard CMOS MEMS process. The proof of concept demonstrated here represents a milestone in low-cost gas sensing spectroscopy, and has the potential to impact profoundly in the entire IR field; many consumer electronics applications (wearables, smartphones, tablets and portable medical devices) will become viable, leading to high volume commercial applications for plasmonic devices.

Source: IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

DOI: 10.1109/memsys.2017.7863636

Authors: Andrea De Luca, Syed Z. Ali, RichardH. Hopper, Sophie Boual, Julian W. Gardner, Florin Udrea

Institutions: University of Cambridge, University of Warwick

Language: English

Topic: Spectroscopy and Laser Applications

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

Funder: European Commission

Award: Multi-Sensor-Platform for Smart Building Management