Nanoengineered Conductive Polyaniline Enabled Sensor for Sensitive Humidity Detection

Sandhu, Samar S.; Kumar, Saurabh; Augustine, Shine; Saha, Udiptya; Arora, Kamal; Bayan, Sayan; Ray, S. K.; Puri, Nitin K.; Malhotra, Bansi D.

doi:10.1109/jsen.2020.3001599

Cited by 14 publications

(12 citation statements)

References 62 publications

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“…However, this bimodal humidity property is undesired. Sandhu et al engineered the PANI into nanogranular structures, which give rise to a unimodal humidity response property with a linear characteristic from 16 to 96.2% RH [ 137 ]. This is probably ascribed to the swelling-resistant morphology of nanogranular shapes.…”

Section: Various Functional Materials For Flexible Humidity Sensorsmentioning

confidence: 99%

Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics

et al. 2022

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In the past decade, the global industry and research attentions on intelligent skin-like electronics have boosted their applications in diverse fields including human healthcare, Internet of Things, human–machine interfaces, artificial intelligence and soft robotics. Among them, flexible humidity sensors play a vital role in noncontact measurements relying on the unique property of rapid response to humidity change. This work presents an overview of recent advances in flexible humidity sensors using various active functional materials for contactless monitoring. Four categories of humidity sensors are highlighted based on resistive, capacitive, impedance-type and voltage-type working mechanisms. Furthermore, typical strategies including chemical doping, structural design and Joule heating are introduced to enhance the performance of humidity sensors. Drawing on the noncontact perception capability, human/plant healthcare management, human–machine interactions as well as integrated humidity sensor-based feedback systems are presented. The burgeoning innovations in this research field will benefit human society, especially during the COVID-19 epidemic, where cross-infection should be averted and contactless sensation is highly desired.

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Section: Various Functional Materials For Flexible Humidity Sensorsmentioning

confidence: 99%

Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics

et al. 2022

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“…It is of great interest in device applications due to stability of doped/undoped states, ease of structural modification and solution processability. 9,14–19 Its winning property is the simplicity of preparation that allows the functionalization of commonly used materials such as fabrics and paper. 20–24 Moreover, when exposed to humidity the effective resistance of PANI film changes due to the formation of hydrogen bonds between water molecules and the nitrogen present in the amine group.…”

Section: Introductionmentioning

confidence: 99%

“…17,25,26 The conductivity of PANI increases with increasing humidity due to continuous proton exchange and this makes PANI-based derivatives and composites attractive candidates for humidity sensing materials. 3,9,17,19,26…”

Section: Introductionmentioning

confidence: 99%

“…PANI and cellulose strongly interact thanks to the presence of hydrogen bonds between the hydroxyl groups of glucose and the repeating N-functionality in polyaniline that helps the paper modification and the preparation of composite materials. 9,32,33 Since these interactions can affects the sensing behavior of polyaniline, several humidity sensors have been fabricated by exploiting these materials as reported in a recent review by Anisimov et al 32…”

Section: Introductionmentioning

confidence: 99%

“…9,32,33 Since these interactions can affects the sensing behavior of polyaniline, several humidity sensors have been fabricated by exploiting these materials as reported in a recent review by Anisimov et al 32 The most used strategy for the fabrication of these paper sensors is the direct deposition of a thin lm of PANI through in situ polymerization or printing on a paper sheet. 3,9 Sandhu et al 9 improved the in situ polymerization protocol for the fabrication of PANI humidity sensor by increasing the electrical conductivity to 1.1 Â 10 −1 from 1.9 Â 10 −6 S cm −1 . Morais et al 3 proposed a humidity sensor composed of conductive PEDOT:PSS poly (3,4ethylenedioxythiophene):poly(styrene sulfonate) and PANI.…”

Section: Introductionmentioning

confidence: 99%

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A resistive sensor for humidity detection based on cellulose/polyaniline

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Cellulose: A Contribution for the Zero e‐Waste Challenge

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The world in the 21st century is confronted with multifaceted challenges against rapid climate change and continuous ecological disturbances caused by revolutionary socio‐economic developments, accelerated expansion of disposable electronic gadgets, and growing dependence on unrecyclable raw materials, among others. The ever‐increasing consumer demand for electronic devices is significantly contributing to the world's fastest‐growing waste stream, known as electronic waste (e‐waste), which is becoming an environmental threat at an alarming rate due to its toxic legacy. The ever‐shortening lifespan of smart technologies has created a “tsunami of e‐waste,” as the United Nations has characterized it, with 50 million tons accumulated each year, of which only 20% undergo formal e‐recycling. Therefore, the challenge of optimizing the current resources management models with an aim of improving the manufacturing processes and lifecycles of electronic devices, as well as building a circular economy, has become significantly prominent. Paper/cellulose, which covers a wide range of essential needs in everyday scenarios (from packaging to writing utilities), constitutes promising candidates for the effective achievement of a circular economy. Particularly, cellulose is revealed as an advantageous material for electronic applications because of its abundant availability, which contributes to its cost‐effectiveness, straightforward fabrication process, and high recyclability and reproducibility.

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Nanoengineered Conductive Polyaniline Enabled Sensor for Sensitive Humidity Detection

Cited by 14 publications

References 62 publications

Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics

Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics

A resistive sensor for humidity detection based on cellulose/polyaniline

Cellulose: A Contribution for the Zero e‐Waste Challenge

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