A printed H2S sensor with electro-optical response

Sarfraz, Jawad; Ihalainen, Petri; Määttänen, Anni; Gulin, T.; Koskela, J.; Wilén, Carl‐Eric; Kilpelä, Ari; Peltonen, Jouko

doi:10.1016/j.snb.2013.10.011

Cited by 53 publications

(30 citation statements)

References 24 publications

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“…These inkjet-printed sensors have been successfully employed for quantitative detection of H 2 S (1 to 20 ppm). 7,8 In addition, good repeatability, long-term stability, negligible humidity effect (at RH < 80%) and selectivity of printed CuAc-based H 2 S sensors have been reported earlier. 7,8 However, the practical applicability of these sensors is still somewhat limited by rather slow response times and decient sensitivity (to sub-ppm level detection).…”

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confidence: 52%

Sub-ppm electrical detection of hydrogen sulfide gas at room temperature based on printed copper acetate–gold nanoparticle composite films

et al. 2015

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This paper presents the sub-ppm level electrical detection of H 2 S gas at room temperature using printed copper acetate-gold nanoparticle composite films. The excellent sensitivity of these films towards H 2 S can be attributed to the catalytic activity of gold nanoparticles in combination with the plasma oxidation of copper acetate films.Hydrogen sulde (H 2 S) is a toxic gas which poses a threat to human health. According to the National Institute of Occupational Safety and Health, the H 2 S concentration immediately dangerous to life is 100 ppm. 1 On the other hand, the recommended exposure limit is 10 ppm for a maximum duration of 10 min. 1 Contemporary H 2 S sensor devices can be divided into three major categories: semiconductor metal oxide sensors, electrochemical sensors, and optical sensors. 2 Current research aims for the development of robust and cost-effective H 2 S sensors with enhanced sensitivity and stability. In addition, sensors should be able to operate consistently in harsh environmental conditions. This can be accomplished through emerging materials science and modern processing technologies. Nano-materials are of particular interest in gas sensing applications because of their high surface to volume ratio. Furthermore, noble metals have been used as oxidation catalysts for enhancing the reaction on a gas sensor surface by means of a superior oxygen dissociation catalytic ability. 3 It has been reported in the literature that the sensitivity of the sensing layer towards the analyte gas can be improved by doping the sensing material with metals, such as Pt, Au, Pd and Ag. 4-6 Copper acetate (CuAc) has been recently introduced as an easily processable material which is sensitive to H 2 S gas. 7-9 CuAc lms have been shown to directly react with H 2 S gas to form copper sulde (CuS). 9 This resulted in a signicant and irreversible change in resistance of the lm at room temperature with relatively low (1-20 ppm) H 2 S concentrations. 7-9 The large change in resistance is attributed to a direct conversion of highly insulating CuAc (R > 1-100 GU) to a p-type semiconducting CuS (R $ 10-100 U). Chemiresistor-type sensors based on CuAc nanoparticles showing more than eight orders of magnitude change in resistance when exposed to H 2 S on ppm level have been previously demonstrated. 7-9 Furthermore it has been shown that robust CuAc-based H 2 S sensors can be fabricated on low-cost and exible substrates by using massmanufacturing technologies such as inkjet-printing. These inkjet-printed sensors have been successfully employed for quantitative detection of H 2 S (1 to 20 ppm). 7,8 In addition, good repeatability, long-term stability, negligible humidity effect (at RH < 80%) and selectivity of printed CuAc-based H 2 S sensors have been reported earlier. 7,8 However, the practical applicability of these sensors is still somewhat limited by rather slow response times and decient sensitivity (to sub-ppm level detection).This paper reports a CuAc-based chemiresistor-type sensor conguration printed on ...

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confidence: 52%

Sub-ppm electrical detection of hydrogen sulfide gas at room temperature based on printed copper acetate–gold nanoparticle composite films

et al. 2015

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“…Temperature and pressure dependence of ozone gas absorption cross section in the UV and visible spectrums [80,94]. Performance indicators/metrics of ozone sensors and sensors in general include selectivity, sensitivity, accuracy, resolution, response time, fabrication cost, dynamic range, precision and linearity [58,[95][96][97][98][99]. Sensor requirements either in performance, physical, or cost, are application dependent [100].…”

Section: Research Challengesmentioning

confidence: 99%

Fundamental Review to Ozone Gas Sensing Using Optical Fibre Sensors

et al. 2015

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The manuscript is a review of basic essentials to ozone gas sensing with optical methods. Optical methods are employed to monitor optical absorption, emission, reflectance and scattering of gas samples at specific wavelengths of light spectrum. In the light of their importance in numerous disciplines in analytical sciences, necessary integral information that serves both as a basis and reference material for intending researchers and others in the field is inevitable. This review provides insight into necessary essentials to gas sensing with optical fibre sensors. Ozone gas is chosen as a reference gas. Simulation results for ozone gas absorption cross section in the ultraviolet (UV) region of the spectrum using spectralcalc.com simulation have also been included.

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“…Sensors for tracking down specific molecular chains in-vivo combined with time release functions for the release of accompanying substances would allow for more advanced treatment options. Similar sensors and actuators can be modified for used within mechanical systems to produce specific release functions when associated conditions are present such as with hydrogen sulfide sensors by Sarfraz et al [32]. The ability to create such sensors can expand the breadth of the field as it can allow for more simplistic product design instead of often times complex retrofitting or more intricate and specialized design processes.…”

Section: Review Of Printed Electronicsmentioning

confidence: 99%

All-printed smart structures: a viable option?

et al. 2014

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The last two decades have seen evolution of smart materials and structures technologies from theoretical concepts to physical realization in many engineering fields. These include smart sensors and actuators, active damping and vibration control, biomimetics, and structural health monitoring. Recently, additive manufacturing technologies such as 3D printing and printed electronics have received attention as methods to produce 3D objects or electronic components for prototyping or distributed manufacturing purposes. In this paper, the viability of manufacturing all-printed smart structures, with embedded sensors and actuators, will be investigated. To this end, the current 3D printing and printed electronics technologies will be reviewed first. Then, the plausibility of combining these two different additive manufacturing technologies to create all-printed smart structures will be discussed. Potential applications for this type of all-printed smart structures include most of the traditional smart structures where sensors and actuators are embedded or bonded to the structures to measure structural response and cause desired static and dynamic changes in the structure.

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A printed H2S sensor with electro-optical response

Cited by 53 publications

References 24 publications

Sub-ppm electrical detection of hydrogen sulfide gas at room temperature based on printed copper acetate–gold nanoparticle composite films

Sub-ppm electrical detection of hydrogen sulfide gas at room temperature based on printed copper acetate–gold nanoparticle composite films

Fundamental Review to Ozone Gas Sensing Using Optical Fibre Sensors

All-printed smart structures: a viable option?

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