Effect of NaCl and Moisture Content on Electrical and Dielectric Properties of Paper

Sirviö, Petri; Sidaravičius, Jonas; Maldžius, Robertas; Backfolk, Kaj; Montrimas, E.

doi:10.2352/j.imagingsci.technol.2009.53.2.020501

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…The frequency independent bulk resistance, R, decreases exponentially with increasing RH. This exponential humidity dependence with a variation over three orders of magnitude is in very good agreement with previous results found in literature [15,16]. The ion-related resistance, R i , drops by four orders of magnitude and the double-layer associated capacitance, C i , simultaneously increases by 2.5 orders of magnitude.…”

Section: Resultssupporting

confidence: 92%

Paper-based printed impedance sensors for water sorption and humidity analysis

Alkin

Stockinger

Zirkl

et al. 2017

Flex. Print. Electron.

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The hygroscopic nature of cellulose-based materials poses a challenge in utilising paper for printed electronics. Adsorbed moisture strongly modulates the conductive and dielectric properties of paper. While affecting the function of printed electronic elements, this behaviour is beneficial for low-cost humidity sensing. Here we describe a simple, sensitive paper-based sensor with a pair of inkjet-printed interdigitated electrodes for analysing water sorption of cellulose over a wide range of relative humidity from 10% to 90%. Impedance spectroscopy between 100 Hz and 1 MHz reveals the humidity-dependent electrical properties of paper. We show in particular that measurements at 1 MHz provide reliable information about the water adsorption and desorption of paper. In contrast, testing at frequencies below 200 kHz is dominated by ionic electrode polarisation, masking the water sorption kinetics of the sensor. Transient adsorption follows nearly an exponential function, while desorption is described by a stretched exponential law. At equilibrated conditions, the effective paper permittivity measured during adsorption and desorption is characterised by a Guggenheim-Anderson-de Boer sorption isotherm which allows for a quantitative evaluation of the sorption hysteresis. Our means of sensing provides a simple and practical method of recording and analysing simultaneously conductivity and permittivity as well as wetting and drying of moist paper.

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Section: Resultssupporting

confidence: 92%

Paper-based printed impedance sensors for water sorption and humidity analysis

Alkin

Stockinger

Zirkl

et al. 2017

Flex. Print. Electron.

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show abstract

“…Results demonstrating this effect have been presented in [ 238 ]. It was also established that ionic addition not only increases the number of available free ions but also changes the water state and the paper structure, which influence the ionic motion in an electric field [ 234 ]. At that O’Sullivan [ 239 ] established an interesting regularity in the effect of salt content on the conductivity of paper.…”

Section: Configuration Of Paper-based Humidity Sensors and Mechanisms...mentioning

confidence: 99%

“… ( a ) Moisture content in 160 g/m 2 paper in dependence on RH. 1—Data extracted from [ 234 ], 2—[ 235 ]; 3—[ 236 ]; 4—[ 237 ]; ( b ) Effective moisture diffusivity of bleached kraft paperboard (BKP) at 23.9 °C and atmospheric pressure. Adapted with permission from [ 224 ].…”

Section: Figurementioning

confidence: 99%

Paper-Based Humidity Sensors as Promising Flexible Devices: State of the Art: Part 1. General Consideration

Korotcenkov

2023

Nanomaterials

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In the first part of the review article “General considerations” we give information about conventional flexible platforms and consider the advantages and disadvantages of paper when used in humidity sensors, both as a substrate and as a humidity-sensitive material. This consideration shows that paper, especially nanopaper, is a very promising material for the development of low-cost flexible humidity sensors suitable for a wide range of applications. Various humidity-sensitive materials suitable for use in paper-based sensors are analyzed and the humidity-sensitive characteristics of paper and other humidity-sensitive materials are compared. Various configurations of humidity sensors that can be developed on the basis of paper are considered, and a description of the mechanisms of their operation is given. Next, we discuss the manufacturing features of paper-based humidity sensors. The main attention is paid to the consideration of such problems as patterning and electrode formation. It is shown that printing technologies are the most suitable for mass production of paper-based flexible humidity sensors. At the same time, these technologies are effective both in the formation of a humidity-sensitive layer and in the manufacture of electrodes.

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Electronics with and on Paper

2012

Transparent Oxide Electronics

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Effect of NaCl and Moisture Content on Electrical and Dielectric Properties of Paper

Cited by 6 publications

References 7 publications

Paper-based printed impedance sensors for water sorption and humidity analysis

Paper-based printed impedance sensors for water sorption and humidity analysis

Paper-Based Humidity Sensors as Promising Flexible Devices: State of the Art: Part 1. General Consideration

Electronics with and on Paper

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