Textile chemiresistors with sensitive layers based on polymer ionic liquids: Applicability for detection of toxic gases and chemical warfare agents

Marešová, Eva; Tomeček, David; Fitl, Přemysl; Vlček, Jan; Novotný, Michal; Fišer, Ladislav; Havlová, Š.; Hozák, Pavel; Tudor, Alexandru; Glennon, Thomas; Florea, Larisa; Coyle, Shirley; Diamond, Dermot; Skaličan, Zdeněk; Hoskovcová, Monika; Vrňata, Martin

doi:10.1016/j.snb.2018.03.157

Cited by 10 publications

(7 citation statements)

References 36 publications

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“…Moreover, as can be observed, faster response and recovery times were obtained when testing HCHO than when testing C6H6. The faster response-and recovery-times of HCHO could be correlated with molecular weight of the tested molecules, those with large molecules (C6H6) exhibit slower dynamics [32].…”

Section: Resultsmentioning

confidence: 93%

Imidazole-based ionogel as room temperature benzene and formaldehyde sensor

et al. 2020

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A room temperature benzene and formaldehyde gas sensor system with an ionogel as sensing material is presented. The sensing layer is fabricated employing poly(Nisopropylacrylamide) polymerized in the presence of 1-ethyl-3-methylimidazolium ethylsulfate ionic liquid onto gold interdigitated electrodes. When the ionogel is exposed to increasing formaldehyde concentrations employing N2as a carrier gas, a more stable response is observed in comparison to the bare ionic liquid, but no difference insensitivity occurs. On the other hand, when air is used as carrier gas the sensitivity of the system towards formaldehyde is decreased by one order of magnitude. At room temperature, the proposed sensor exhibited in air higher sensitivities to benzene, at concentrations ranging between 4 and 20 ppm resulting, in a limit of detection of 47 ppb, which is below the standard permitted concentrations. The selectivity of the IL towards HCHO and C6H6is demonstrated by the absence of response when another IL is employed. Humidity from the ambient air slightly affects the resistance of the system proving the protective role of the polymeric matrix. Furthermore, the gas sensor system showed fast response/recovery times considering the thickness of the material, suggesting that ionogel materials can be used as novel and highly efficient volatile organic compounds sensors operating at room temperature.

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Section: Resultsmentioning

confidence: 93%

Imidazole-based ionogel as room temperature benzene and formaldehyde sensor

et al. 2020

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“…Regarding the substrate of devices, glass or silicon wafers have been most widely used for electrical sensors; however, recently, polymer films or commercial fabrics have been used as flexible substrates for ecosystem monitoring. 75,76 The selection of the sensing material is the most important process in the design of electrical sensors. Since the active reaction of the semiconductor materials to specific gas molecules was reported in 1970s, 77 various solid-state materials, including metals, semiconducting metal oxides, CNTs, GO, transition metal dichalcogenides, conductive metal-organic frameworks MOFs, and composite materials [78][79][80][81][82] have been employed as electrical sensing materials.…”

Section: Design Technique Of Electrical Sensormentioning

confidence: 99%

Sensor design strategy for environmental and biological monitoring

Heo

Sung

Trung

et al. 2023

EcoMat

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Rapid industrial growth has severely impacted ecosystems and aggravated economic and health risks to society. Monitoring of ecosystems is fundamental to our understanding of how ecosystem change impacts resources and is critical for developing data-based sustainability. Thus, the design and development of optimized sensors for ecosystem monitoring have received increasing attention.This review provides a comprehensive overview of systematic sensor design strategies for ecosystem monitoring from the material level to the form factor level. We discuss the fundamental transducing mechanisms of a representative sensor system including optical, electrical, and electrochemical sensors. We then review the sensor interfacing strategy for achieving stable and real-time monitoring of environmental biochemical factors from air, water, soil, and living organisms. Finally, we provide a summary of the current performance and prospects of this state-of-the-art sensor technology and an outlook on opportunities for possible future research directions in this emerging field.

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“…The sensor responses at room temperature when exposed to toxic gases (nitrogen dioxide or methanol), the sensitive layer behaves like an n-type semiconductor, irrespective of its ionic conductivity. [295] In a recent study, a wearable thermal flow sensor integrated with the temperature sensing function was developed for non-invasive monitoring of human respiration, as shown in Figure 6a-d. [61] The hot wire flow sensor was manufactured on low-cost, lightweight, recyclable, and biodegradable cellulose paper materials, using lightweight and stretchable CNT yarns with graphite pencil shading to produce the electrodes.…”

Section: Plasmonic Photonic Electrochemical and Physical Sensing Devicesmentioning

confidence: 99%

Section: Plasmonic Photonic Electrochemical and Physical Sensing Devicesmentioning

confidence: 99%

Carbon‐Based Nanomaterials and Sensing Tools for Wearable Health Monitoring Devices

Erdem

Derin

Shirejini

et al. 2021

Adv Materials Technologies

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In this manner, sensor technologies have garnered great attention in various fields, including biomedicine, [2][3][4][5] environmental monitoring, [6][7][8][9] smart devices, [10] wearable devices, [11] automobile manufacturing [12] since the semiconductor materials and circuits have been developed. In particular, biosensors are powerful and innovative analytical tools that incorporate biological receptors to recognize biological analytes through either physical or chemical transducers. Primarily, bio-receptors are responsible for identifying and capturing target analytes, and the transducer basically translates biological and chemical information into the detectable signals, which are eventually converted into the concentration of the analyte. [13,14] Considering gold standard methods, such as enzyme-linked immunosorbent assay (ELISA) [15] and polymerase chain reaction (PCR)-based strategies, [16] biosensors mostly hold crucial features, such as i) short assay time, [17] ii) affordable tools and reagents, [18] iii) portability, [19] and iv) facile use and minimum user interpretation. [20] Nowadays, the applications of biosensors have been leveraged by the advancements of portable and miniaturized platforms. In particular, over the past years, wearable health monitoring devices have notable impact on continuous and real-time monitoring of health parameters, thereby accelerating the deployment of biosensing strategies to daily lives. Besides, non-invasive and ease-of-collecting information supports the benefits of the wearable systems for enhancing the awareness of individuals and communities. [21][22][23] The special features of the mechanically flexible and stable wearable sensors include remarkable means, such as portability, comfortability, light-weight, non-invasive, and reliable performance. To put it simply, wearable sensors are readily attached to skin or organ surfaces through an adhesive tape [24] or microneedles, [25] and because of such easy integrations, several researchers have focused on developing wearable sensors for real-time health monitoring. A wearable sensor is basically composed of some vital elements, including a flexible base material attached to the skin or an organ, a signal transfer electrode, and a biorecognition element. Recently, researchers have concentrated on creating integrated sensors that are able to measure various parameters simultaneously, such as pressure, temperature,The healthcare system has a drastic paradigm shift from centralized care to home-based and self-monitoring strategies; aiming to reach more individuals, minimize workload in hospitals, and reduce healthcare-associated expenses. Particularly, wearable technologies are garnering considerable interest by tracking physiological parameters through motion and activities, and monitoring biochemical markers from sweat, saliva, and tears. Through their integrations with sensors, microfluidics, and wireless communication systems, they allow physicians, family members, or individuals to monitor multiple parameters withou...

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Textile chemiresistors with sensitive layers based on polymer ionic liquids: Applicability for detection of toxic gases and chemical warfare agents

Cited by 10 publications

References 36 publications

Imidazole-based ionogel as room temperature benzene and formaldehyde sensor

Imidazole-based ionogel as room temperature benzene and formaldehyde sensor

Sensor design strategy for environmental and biological monitoring

Carbon‐Based Nanomaterials and Sensing Tools for Wearable Health Monitoring Devices

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