Carbon nanotube gas sensor array for multiplex analyte discrimination

Guérin, Höel; Poche, H. Le; Pohle, Roland; Buitrago, Elizabeth; Badia, M.; Dijon, Jean; Ionescu, Adrian M.

doi:10.1016/j.snb.2014.10.117

Cited by 19 publications

(15 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the result of the sensor array is highly sensitive to any minor change in the process steps as well as the response of the individual sensor. Regarding the sensing mechanism for the CNT-based gas sensors, there is no complete theory that fully explains the working principles [25]. The debate is whether the CNT layer or metal-CNT interface plays the main role in the sensitivity of the gas sensor.…”

Section: Realization Of Optimum Cnt-based Gas Sensor Arraymentioning

confidence: 99%

“…The sensor array showed excellent discrimination between VOCs found in the breath of patients with lung cancer relative to healthy controls. Guerin et al [25] showed the possibility of discriminating between different gas analytes (ethanol, NH 3 , toulene and H 2 ) by changing the metal electrodes on top of the CNT channel. They used Pt, Pd and Au as metal electrodes where each metal creates an analyte-specific pattern and enables discriminative detection.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Highly sensitive and selective carbon nanotube-based gas sensor arrays functionalized with different metallic nanoparticles

Abdelhalim

Winkler

Loghin

et al. 2015

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

Section: Realization Of Optimum Cnt-based Gas Sensor Arraymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly sensitive and selective carbon nanotube-based gas sensor arrays functionalized with different metallic nanoparticles

Abdelhalim

Winkler

Loghin

et al. 2015

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

“…Carbon nanotubes have a high potential to become a gas sensitive material in such detectors, given that they can now be produced at relatively low cost [ 10 – 14 ] with a wide range of structures that can be used for different sensing applications [ 15 – 17 ]. Moreover, carbon nanotubes can operate at room temperature (in contrast to metal oxides that must be operated at relatively high temperatures [ 18 ]) thus enabling the development of low-power sensors [ 13 , 19 ]. This is essential for achieving long-life, battery-operated, wearable detectors.…”

Section: Introductionmentioning

confidence: 99%

Pt- and Pd-decorated MWCNTs for vapour and gas detection at room temperature

Baccar¹,

Thamri²,

Clément³

et al. 2015

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

SummaryHere we report on the gas sensing properties of multiwalled carbon nanotubes decorated with sputtered Pt or Pd nanoparticles. Sputtering allows for an oxygen plasma treatment that removes amorphous carbon from the surface of the carbon nanotubes and creates oxygenated surface defects in which metal nanoparticles nucleate within a few minutes. The decoration with the 2 nm Pt or the 3 nm Pd nanoparticles is very homogeneous. This procedure is performed at the device level (i.e., for carbon nanotubes deposited onto sensor substrates) for many devices in one batch, which illustrates the scalability for the mass production of affordable nanosensors. The response to selected aromatic and non-aromatic volatile organic compounds, as well as pollutant gases has been studied. Pt- and Pd-decorated multiwalled carbon nanotubes show a fully reversible response to the non-aromatic volatile organic compounds tested when operated at room temperature. In contrast, these nanomaterials were not responsive to the aromatic compounds studied (measured at concentrations up to 50 ppm). Therefore, these sensors could be useful in a small, battery-operated alarm detector, for example, which is able to discriminate aromatic from non-aromatic volatile organic compounds in ambient.

show abstract

“…Surface functionalization of carbon nanotubes can be utilized to render them sensitive to other gases, such as CO [22] and SO 2 . Multiple analyte discrimination is also possible using nanotube sensor arrays [23]. Suspended, ultra-clean carbon nanotube gas sensors are also insensitive to humidity variations [24].…”

Section: Related Workmentioning

confidence: 99%

Towards Internet of Things for event-driven low-power gas sensing using carbon nanotubes

Jeličić

Magno

Chikkadi

et al. 2015

2015 6th International Workshop on Advances in Sensors and Interfaces (IWASI)

View full text Add to dashboard Cite

One of most important applications of sensing devices under the Internet of Things paradigm is air quality monitoring, which is particularly useful in urban and industrial environments where air pollution is an increasing public health problem. As these sensing systems are usually battery-powered and gas sensors are power-hungry, energy-efficient design and power management are required to extend the device's lifetime. In this paper, we present a two-stage concept where a novel lowpower carbon nanotube is used as a gas detector for an energyconsuming metal-oxide (MOX) semiconductor gas sensor. We propose a design of a heterogeneous sensor node where we exploit the low-power nanotube gas sensor and the more accurate MOX sensor. This work performs energy consumption simulations for three event-driven scenarios to evaluate the power consumption reduction, as well as the limitations of carbon nanotubes. Our results show the benefits of the proposed approach over the scenarios with adaptive duty-cycling with only MOX gas sensors, proved with 20%-35% node lifetime prolongation. The delay introduced due to the nanotube recovery time can be overcome by radio duty-cycled activity for detecting alarm messages from the neighbour nodes.

show abstract

Carbon nanotube gas sensor array for multiplex analyte discrimination

Cited by 19 publications

References 57 publications

Highly sensitive and selective carbon nanotube-based gas sensor arrays functionalized with different metallic nanoparticles

Highly sensitive and selective carbon nanotube-based gas sensor arrays functionalized with different metallic nanoparticles

Pt- and Pd-decorated MWCNTs for vapour and gas detection at room temperature

Towards Internet of Things for event-driven low-power gas sensing using carbon nanotubes

Contact Info

Product

Resources

About