A paper based 2‐element antenna for WLAN MIMO applications fabricated using inkjet technology

Wignes, Francesca L.; Glascoe, Cody; Makar, Gregory; Karakolak, Tutku; Sekhar, Praveen Kumar

doi:10.1002/mop.30822

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…However, the temperature of the paper substrate is not able to withstand both the required curing temperatures of the Au and Cu inks [6]. Compared to the Au and Cu inks, the silver nanoparticles ink (AgNPs) has been highly recommended due to the fact that AgNPs has low reactivity to air [7], minimal resistance to corrosion [8], a lower melting temperature [9] and lower costs [10]. Because of these, the commercial silver ink is dominating the market.…”

Section: Introductionmentioning

confidence: 99%

Inkjet-Printed Flexible Temperature Sensor Based on Silver Nanoparticles Ink

Liew

Lee

2020

7th International Electronic Conference on Sensors and Applications

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In this research, a flexible inkjet-printed temperature sensor with in-house silver nanoparticles ink is presented and compared with the sensor printed with commercial silver nanoparticles ink. These sensors have an average width of 0.5 ± 0.04 mm in the latter and 0.5 ± 0.03 mm in the former. These serpentine-structure sensors were printed on polyethylene terephthalate (PET) substrate by using a Fujifilm Dimatix 2850 printer. The corresponding results indicating resistance have been recorded in the range of 30–100 °C to evaluate the sensor performance. The result of the studies showed that there was a linear relationship between the resistance and temperature for both ink types. The printed sensors developed using the in-house ink presented higher sensitivity, 0.1086 Ω/°C, compared to the commercial ink, which was 0.0543 Ω/°C. Therefore, the flexible inkjet-printed temperature sensor with the in-house silver nanoparticles ink is recommended for the large-scale productions and implementations.

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Section: Introductionmentioning

confidence: 99%

Inkjet-Printed Flexible Temperature Sensor Based on Silver Nanoparticles Ink

Liew

Lee

2020

7th International Electronic Conference on Sensors and Applications

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“…9 The hydrophobic and resin coated, Kodak photo paper is a common choice due to its conductive single layer traces allowing multiple layers of printing capability. 10 There are numerous research papers regarding inks, where many researchers have claimed to have founded excellent device performance using either gold 11 or copper 12 ink. However, when devices are implemented utilizing such inks, they quickly convert into their oxidized form (Au 2 O 3 or CuO) rendering them insulating.…”

mentioning

confidence: 99%

“…In addition, the required curing temperatures of gold and copper exceed the temperature that the paper substrate can withstand. Silver nanoparticle ink (AgNP) is preferred over Au or Cu due to its lower melting temperature, 13 lower cost, 14 minimal resistance to corrosion, 10 and low reactivity in air. 15 Apart from the ink, the critical factor that influences the conductivity of the printed samples is sintering.…”

mentioning

confidence: 99%

Investigation of Printing Properties on Paper Substrate

Saha

Knaus

Khosla

et al. 2018

J. Electrochem. Soc.

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In this article, the optimum printing parameters were found when using silver nanoparticle ink to print on Kodak 4-Star photo paper substrate. Fujifilm Dimatix 2831 was used as the inkjet printer. The printing parameters of interest included the number of printing layers, the drop spacing, and curing temperature of the ink. Analysis of Variance (ANOVA) analysis of the experimental data reveals sintering temperature to be significant (p < 0.05) to improve the conductivity. Pattern conductivity and surface roughness were used to identify the optimum printing parameters. The optimum printing parameters were found to be 15 μm drop spacing, two printing layer, and a sintering temperature of 90 • C. The best conductivity measured under the above mentioned condition was found to be 5.56 × 10 6 −1 m −1 . Further, the bending test indicated that the printed patterns were unaffected (in terms of conductivity) when flexed around a cylindrical support indicating excellent stability under stress. This study paves the way for developing mechanically robust flexible devices with excellent electrical properties for Internet of Things (IoT) applications.

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Inkjet-Printed Flexible Temperature Sensor using Hybrid Reduced Graphene Oxide – Silver Nanoparticles(rGO/AgNPs) Conductive Ink and Silver Nanoparticles Ink

Liew

Rashid

Lee

et al. 2021

J. Phys.: Conf. Ser.

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This paper presents a new temperature sensor, inkjet-printed with the in-house developed hybrid rGO/Ag nanoparticles ink (rGO/AgNPs ink). Its performance is studied, and the results indicate that its sensitivity is better than the commercial sensor. The meander—shaped electrodes were fabricated using drop-on-demand inkjet printer (Fujifilm Dimatix 2850 printer) on polyethylene terephthalate (PET) substrate. Compared to the sensitivity 0.0543 ?/oc of the sensor developed with commercial ink, the in-house developed sensor shows higher sensitivity 0.1086 ?/oc. Besides, the printed sensors exhibit its resistance increasing linearly with temperature from 30°C to 100°C. The bending tests results also prove that the characteristics of the sensors do not vary significantly, indicating excellent mechanical stability and flexibility. Therefore, the flexible inkjet-printed temperature sensor with the in-house hybrid rGO/AgNPs ink is recommended for the large-scale productions and implementations.

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A paper based 2‐element antenna for WLAN MIMO applications fabricated using inkjet technology

Cited by 3 publications

References 11 publications

Inkjet-Printed Flexible Temperature Sensor Based on Silver Nanoparticles Ink

Inkjet-Printed Flexible Temperature Sensor Based on Silver Nanoparticles Ink

Investigation of Printing Properties on Paper Substrate

Inkjet-Printed Flexible Temperature Sensor using Hybrid Reduced Graphene Oxide – Silver Nanoparticles(rGO/AgNPs) Conductive Ink and Silver Nanoparticles Ink

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