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Proceedings Paper

Multi-walled carbon nanotubes based near-infrared radiation source
Author(s): Ahmed Saeed; Ahmed A. Elsayed; Frédéric Marty; Elyes Nefzaoui; Tarik Bourouina; Heba A. Shawkey; Yasser M. Sabry; Diaa Khalil
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Paper Abstract

Emerging Near-InfraRed (NIR) spectroscopic applications such as biomedical, agrofood, health & beauty and in-line industrial applications require compact and low-cost miniaturized spectrometers. One of the main elements for such devices is the wideband light source, which can be ultimately in the form of an integrated source. In this work, we report a Multi-Walled Carbon Nanotubes (MWCNTs) NIR source for operation with a micro-electro-mechanical system (MEMS) FTIR spectrometer. The source consists of joule micro heater machined on a highly doped silicon substrate, where the heater surrounds an active area. The micro heater is made of a platinum film sputtered on silicon with a thin titanium layer used as an adhesion layer. The chips are singulated then the MWCNTs are plotted in the active area. The SonoPlot® Microplotter II is used to plot a multi-layered 4x4 mm2 MWCNTs thin film with a layer thickness of about 1μm in the active area. A voltage difference is applied to the designated pads on the chip, allowing uniform heating of the square area containing the MWCNTs. The MEMS FTIR spectrometer is used to measure the emitted power spectral density (PSD) from the source with and without the plotting of the MWCNTs thin film. The micro-plotting of the MWCNTs over the silicon substrate improved the PSD recorded by the spectrometer. The reported results show that an engineered light source based on MWCNTs and silicon serves as a good candidate for miniaturized spectrometers.

Paper Details

Date Published: 28 February 2020
PDF: 6 pages
Proc. SPIE 11293, MOEMS and Miniaturized Systems XIX, 112930U (28 February 2020); doi: 10.1117/12.2544396
Show Author Affiliations
Ahmed Saeed, Electronics Research Institute (Egypt)
Ain-Shams Univ. (Egypt)
Ahmed A. Elsayed, Ain-Shams Univ. (Egypt)
Frédéric Marty, Univ. Gustave Eiffel, CNRS (France)
Elyes Nefzaoui, Univ. Gustave Eiffel, CNRS (France)
Tarik Bourouina, Univ. Gustave Eiffel, CNRS (France)
Heba A. Shawkey, Electronics Research Institute (Egypt)
Yasser M. Sabry, Ain-Shams Univ. (Egypt)
Si-Ware Systems (Egypt)
Diaa Khalil, Ain-Shams Univ. (Egypt)
Si-Ware Systems (Egypt)

Published in SPIE Proceedings Vol. 11293:
MOEMS and Miniaturized Systems XIX
Wibool Piyawattanametha; Yong-Hwa Park; Hans Zappe, Editor(s)

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