An ultra-sensitive piezoresistive polymer nano-composite microcantilever sensor electronic nose platform for explosive vapor detection

Patil, Sushil D.; Duragkar, Nikhil; Rao, V. Ramgopal

doi:10.1016/j.snb.2013.10.111

Cited by 77 publications

(32 citation statements)

References 28 publications

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“…104–107 Each of the sensor types have various advantages and disadvantages; thus, it is important to consider the ultimate aim of analysis and type of sample to be characterized. Both mass and electrical/electrochemical sensors both provide sensitivity and selectivity in vapour and liquid analysis; however, these devices have a delicate setup, are unfortunately prone to drift due to changes in environment such as temperature and humidity, and require complex data analysis to extract the de-convolute the sensor response signal from the background noise.…”

Section: Discussionmentioning

confidence: 99%

Biomimetic cross-reactive sensor arrays: prospects in biodiagnostics

Fitzgerald

Fenniri

2016

RSC Adv.

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Biomimetic cross-reactive sensor arrays have been used to detect and analyze a wide variety of vapour and liquid components in applications such as food science, public health and safety, and diagnostics. As technology has advanced over the past three decades, these systems have become selective, sensitive, and affordable. Currently, the need for non-invasive and accurate devices for early disease diagnosis remains a challenge. This review provides an overview of the various types of Biomimetic cross-reactive sensor arrays (also referred to as electronic noses and tongues in the literature), their current use and future directions, and an outlook for future technological development.

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Section: Discussionmentioning

confidence: 99%

Biomimetic cross-reactive sensor arrays: prospects in biodiagnostics

Fitzgerald

Fenniri

2016

RSC Adv.

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“…In the past decade, a large number of analytical methods for trace explosive screening have been investigated, including gas chromatography-mass spectrometry (GC-MS) [7][8][9][10], electronic noses [11][12][13][14], ion mobility spectrometry [5,[15][16][17][18], surface acoustic wave devices [19][20][21] and fluorimetry [22][23][24][25]. Some effective approaches, such as solid-phase microextraction (SPME) [26][27][28], have been extensively explored for ultrasensitive gaseous detection of non-volatile explosives at the ppb or ppt level.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Silica-Dye Microspheres for Enhanced Colorimetric Detection of Cyclohexanone

2018

Chemosensors

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Forensic detection of non-volatile nitro explosives poses a difficult analytical challenge. A colorimetric sensor comprising of ultrasonically prepared silica-dye microspheres was developed for the sensitive gas detection of cyclohexanone, a volatile marker of explosives 1,3,5-trinitro-1,3,5-triazinane (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX). The silica-dye composites were synthesized from the hydrolysis of ultrasonically sprayed organosiloxanes under mild heating conditions (150 • C), which yielded microspherical, nanoporous structures with high surface area (~300 m 2 /g) for gas exposure. The sensor inks were deposited on cellulose paper and given sensitive colorimetric responses to trace the amount of cyclohexanone vapors even at sub-ppm levels, with a detection limit down to~150 ppb. The sensor showed high chemical specificity towards cyclohexanone against humidity and other classes of common solvents, including ethanol, acetonitrile, ether, ethyl acetate, and ammonia. Paper-based colorimetric sensors with hierarchical nanostructures could represent an alternative sensing material for practical applications in the detection of explosives.

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“…In the past decade, a large number of analytical methods for trace explosive screening have been investigated, including GC-MS [7][8][9][10], electronic noses [11][12][13][14], ion mobility spectrometry [5,[15][16][17][18], surface acoustic wave devices [19][20][21] and fluorimetry [22][23][24][25]. Some effective approaches, such as solid-phase microextraction (SPME) [26][27][28], have been extensively explored for ultrasensitive gaseous detection of non-volatile explosives at ppb or ppt level.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Silica-Dye Microspheres for Enhanced Colorimetric Detection of Cyclohexanone

Li¹

2018

Preprint

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Forensic detection of non-volatile nitro explosives poses a tough analytical challenge. A colorimetric sensor comprising ultrasonically prepared silica-dye microspheres was developed for sensitive gas detection of cyclohexanone, a volatile marker of explosives 1,3,5-trinitro-1,3,5-triazinane (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX). The silica-dye composites were synthesized from the hydrolysis of ultrasonically sprayed organosiloxanes under mildly heating conditions (150 oC), which yields microspherical, nanoporous structures with high surface area (~300 m2/g) for gas exposure. The sensor inks were deposited on cellulose paper and gave sensitive colorimetric responses to trace amount of cyclohexanone vapors even at sub-ppm levels, with the detection limit down to ~150 ppb. The sensor showed high chemical specificity towards cyclohexanone against humidity and other classes of common solvents, including ethanol, acetonitrile, ether, ethyl acetate, and ammonia. Paper-based colorimetric sensors with hierarchical nanostructures could represent an alternative sensing materials for practical applications in the detection of explosives.

show abstract

An ultra-sensitive piezoresistive polymer nano-composite microcantilever sensor electronic nose platform for explosive vapor detection

Cited by 77 publications

References 28 publications

Biomimetic cross-reactive sensor arrays: prospects in biodiagnostics

Biomimetic cross-reactive sensor arrays: prospects in biodiagnostics

Nanoporous Silica-Dye Microspheres for Enhanced Colorimetric Detection of Cyclohexanone

Nanoporous Silica-Dye Microspheres for Enhanced Colorimetric Detection of Cyclohexanone

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