A Programmable Interface Circuit for an Ultralow Power Gas Sensor

Bissi, L.; Cicioni, M.; Placidi, P.; Zampolli, S.; Elmi, I.; Scorzoni, A.

doi:10.1109/tim.2010.2049182

Cited by 27 publications

(8 citation statements)

References 17 publications

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“…Given the challenge of patterning two measuring electrodes on an MOS porous film covering a CNW, the semistor approach is probably the only practical way to develop nanowirebased gas sensors. Recently, Bissi et al [60], the same group that introduced the ultra-low-power microhotplate that ran at an unprecedented low-power value of 8.9 mW (see above), switched to a semistor-like approach. These investigators do introduce a novel three-terminal device by patterning a single metallization layer (Pt) and, as in a semistor approach, there is no passivation layer for electrically insulating the sensing layer from the heater in their design.…”

Section: Integrating Miniaturized Heaters With Nanomaterials For Advamentioning

confidence: 99%

A new approach to gas sensing with nanotechnology

Sharma

Madou

2012

Phil. Trans. R. Soc. A.

145

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Nanosized gas sensor elements are potentially faster, require lower power, come with a lower limit of detection, operate at lower temperatures, obviate the need for expensive catalysts, are more heat shock resistant and might even come at a lower cost than their macro-counterparts. In the last two decades, there have been important developments in two key areas that might make this promise a reality. First is the development of a variety of very good performing nanostructured metal oxide semiconductors (MOSs), the most commonly used materials for gas sensing; and second are advances in very low power loss miniaturized heater elements. Advanced nano- or micro-nanogas sensors have attracted much attention owing to a variety of possible applications. In this article, we first discuss the mechanism underlying MOS-based gas sensor devices, then we describe the advances that have been made towards MOS nanostructured materials and the progress towards low-power nano- and microheaters. Finally, we attempt to design an ideal nanogas sensor by combining the best nanomaterial strategy with the best heater implementation. In this regard, we end with a discussion of a suspended carbon nanowire-based gas sensor design and the advantages it might offer compared with other more conventional gas sensor devices.

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Section: Integrating Miniaturized Heaters With Nanomaterials For Advamentioning

confidence: 99%

A new approach to gas sensing with nanotechnology

Sharma

Madou

2012

Phil. Trans. R. Soc. A.

145

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“…Different digital electronics techniques have been used in lab-on-chip applications; these techniques are based on programmable logic devices and microcontrollers. Programmable resources can be optimized to support a target embedded application without the time and cost of designing a custom application-specific integrated circuit [20], [21].…”

Section: System Architecturementioning

confidence: 99%

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

Conti

Placidi

Biasini

et al. 2013

IEEE Trans. Instrum. Meas.

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Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. Due to skin tissues and peripheral blood irradiation, these exposures can result in deterministic effects (radiodermatitis, aged skin, and hand depilation) or stochastic ones (skin and non-solid cancer incidence). The authors present a novel approach to perform online monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor. The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental setup: the number of photons and the generated charge have been assessed as dosimetric observables from the frames acquired by the sensor using a two-threshold clustering algorithm, the efficiency of which has been evaluated as well. The correlation of these observables with passive dosimeter dose measurements has been analyzed: a good linearity has been demonstrated, and the response difference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.Index Terms-Active Personal Dosimeter, CMOS pixels, dosimetry, interventional radiology (IR), X-ray.

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“…Gas sensors for monitoring principal gases among air pollutants are described in detail by using typical examples here. [19,[31][32][33][34][35][36][37][38][39]. These oxides have the advantages of rapid reactivity, efficiency, and gas selectivity when suitable additives are applied to them.…”

Section: Environmental Gas Sensorsmentioning

confidence: 99%

Gas Sensors for Monitoring Air Pollution

Yoo¹

2011

Monitoring, Control and Effects of Air Pollution

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A Programmable Interface Circuit for an Ultralow Power Gas Sensor

Cited by 27 publications

References 17 publications

A new approach to gas sensing with nanotechnology

A new approach to gas sensing with nanotechnology

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

Gas Sensors for Monitoring Air Pollution

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