@article {118,
	title = {Carbon-nanotube loaded antenna-based ammonia gas sensor},
	journal = {IEEE Transactions on Microwave Theory and Techniques},
	volume = {59},
	year = {2011},
	month = {09/2011},
	pages = {2665-2673},
	chapter = {2665},
	abstract = {<p><span>Carbon nanotubes (CNTs) have been researched extensively for gas-sensing applications due to their unique electrical, chemical, and structural properties. Single-walled carbon nanotubes (SWNTs) have been predominantly used due to their superior electrical conductivity and higher sensitivity relative to multiwalled CNTs. This paper presents the design and characterization of a novel planar sensor fabricated on paper substrate to detect small concentrations of ammonia gas, using the shift in resonance frequency of a patch antenna as the discriminator. We have investigated three main design issues in depth. First, functionalization of the SWNTs with a polymer is studied in order to enhance the gas detection sensitivity. Second, a thin film of the functionalized SWNT is characterized to create a surface impedance model for the explanation and prediction of the resonance shift due to different gas concentrations\&nbsp;\&hellip;</span></p>
},
	url = {https://ieeexplore.ieee.org/abstract/document/6016223},
	author = {Hoseon Lee and George Shaker and Krishna Naishadham and Xiaojuan Song and Michael McKinley and Brent Wagner and Manos Tentzeris}
}
