Screen-Printed Remotely Readable Environmental Sensor Pair

Voutilainen, Juha-Veikko; Happonen, Tuomas; Häkkinen, Juha; Fabritius, Tapio

doi:10.1109/jsen.2016.2532383

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…Further, 3D printed structures, such as origami, are gaining interest owing to their ease of fabrication, which was previously an issue with the technique owing to the support structures required for fabrication. Some of the recent works involve combination of inkjet and screen printing in the development of batteryless sensors [ 98 , 99 , 100 , 101 ]. For this review, we have discussed and compared the recent advances in the three popular printing fabrication techniques with respect to their fabrication time, power consumption, and complexity.…”

Section: Discussionmentioning

confidence: 99%

Review of Batteryless Wireless Sensors Using Additively Manufactured Microwave Resonators

Memon

Lim

2017

Sensors

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The significant improvements observed in the field of bulk-production of printed microchip technologies in the past decade have allowed the fabrication of microchip printing on numerous materials including organic and flexible substrates. Printed sensors and electronics are of significant interest owing to the fast and low-cost fabrication techniques used in their fabrication. The increasing amount of research and deployment of specially printed electronic sensors in a number of applications demonstrates the immense attention paid by researchers to this topic in the pursuit of achieving wider-scale electronics on different dielectric materials. Although there are many traditional methods for fabricating radio frequency (RF) components, they are time-consuming, expensive, complicated, and require more power for operation than additive fabrication methods. This paper serves as a summary/review of improvements made to the additive printing technologies. The article focuses on three recently developed printing methods for the fabrication of wireless sensors operating at microwave frequencies. The fabrication methods discussed include inkjet printing, three-dimensional (3D) printing, and screen printing.

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Section: Discussionmentioning

confidence: 99%

Review of Batteryless Wireless Sensors Using Additively Manufactured Microwave Resonators

Memon

Lim

2017

Sensors

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“…Even the switch to paper as a humidity sensing medium could be demonstrated for the use of 2-step inkjet printable capacitive humidity sensors in a proof-of-concept [9]. With the help of screen printing, remotely readable and flexibly hybrid temperature/humidity sensor pairs could be produced by adding temperature-and humidity-sensitive elements to screen printed antenna coils [10]. However, resistive humidity sensors were also recently produced by combining laser ablation of interdigitated electrodes and screen printing of humidity-sensitive TiO2 particles [11].…”

Section: Technologies For Lightweight Structures 1(2) (2017)mentioning

confidence: 99%

Additive manufacturing of capacitive humidity sensors by screen printing for condition monitoring of FRP composites

Seifert

Martin

Seider

et al. 2022

TLS

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Screen printing as a method of additive manufacturing applicable for the production of highly sensitive humidity sensors is presented. For this purpose, manufacturing, benchmarking and optimization of sensitive micro-composite dielectric paste systems suitable for screen printing are demonstrated. Furthermore, commercially available silver paste systems were rheologically and electrically characterized and benchmarked. Thereby bulk silver conductivities of up to 15 % were measured with average layer thicknesses in the range between 3 - 10 μm and an occurring surface roughness Ra between 0.7 - 3.7 μm. The printed sensors capacitance was measured along with the characterization of its humidity sensing capability. The capacitance of the printed sensors varied between 6.2 - 8.5 pF depending on the layer thickness of the micro-composite dielectric materials and increased up to 26 pF while detecting 90 % relative humidity. Differences between water molecule absorption and desorption are determined by the occurring hysteresis between the detection of increasing and decreasing humidity. Malfunctions of the sensors due to the arising cross contact between top and bottom electrode could be addressed by varying the layer thickness or selection of materials.

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“…Because of the high viscosity paste, screen printing allows the use of coarse substrates as HEPA. Screen printing has been used to fabricate environmental sensors also previously [16,17], but those sensors were printed only on one side of the substrate and they were not dedicated for filtering applications.…”

Section: Introductionmentioning

confidence: 99%

Double-sided environmental sensor for high-efficiency particulate air filter

Vilmi

Śliz

Fabritius

2020

2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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A capacitive environmental sensor pair is fabricated on a High-Efficient Particulate Air (HEPA) filter. The sensors are fabricated on both sides of the filter. The front side sensor is exposed to the conditions of the dirty side of a filter while the other is used as a reference on the back side. The capacitances on both sensors are measured to analyze particulate accumulation on the filter. It is observed that the capacitance of the front side sensor changes significantly, when the filter becomes dirty, whilst the reference capacitance has a minor change. The capacitance difference between the sensors was up to 45 %. After cleaning the filter, the capacitance values returned to the initial level on both sides. The proposed sensor concept is capable for a quantitative online monitoring of air filter condition, enabling interesting possibilities in IoT based automation systems.

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Screen-Printed Remotely Readable Environmental Sensor Pair

Cited by 7 publications

References 24 publications

Review of Batteryless Wireless Sensors Using Additively Manufactured Microwave Resonators

Review of Batteryless Wireless Sensors Using Additively Manufactured Microwave Resonators

Additive manufacturing of capacitive humidity sensors by screen printing for condition monitoring of FRP composites

Double-sided environmental sensor for high-efficiency particulate air filter

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