Optimizing the Conductivity of Ink-Jet Printed Microwave Components on Polymer Substrates by Laser Sintering

Hajjaji, Chaimaa El; George, Julien; Lmansouri, Souhayl; Delhote, Nicolas; Verdeyme, Serge; Baillargeat, Dominique; Piechowiak, Malgorzata Anna; Durand, Olivier

doi:10.23919/eumc.2019.8910768

Cited by 3 publications

(7 citation statements)

References 7 publications

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“…A maximum equivalent electrical conductivity of 14.49 S/μm after IPL sintering and of 6.5 S/μm [32] after laser sintering are obtained at f = 14 GHz. Because of these unconventional sintering methods, the unloaded Q factors of silver-printed planar resonators show an improvement of up to + 55% (with IPL sintering).…”

Section: Discussionmentioning

confidence: 96%

“…The laser sintering of inkjet printed resonators has already been tested with two methods [32], and a third method is proposed in this section. After printing the samples, they were dried at 200°C for 6 h on a hot plate to evaporate the solvents present in the ink.…”

Section: Description Of the Sintering Methodsmentioning

confidence: 99%

“…In this extended version, two additional IPL processing parameters are presented accompanied by SEM images of a sectional view of the metal deposit. A new laser processing technology accompanied by SEM images before and after sintering is also added and compared to a previous work proposed at the EuMW2019 conference [32]. All the mentioned results are summarized in this paper along with the technological parameters and general recommendations needed to reproduce them.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of the conductivity of microwave components printed by inkjet and aerosol jet on polymeric substrates by IPL and laser sintering

Hajjaji

Delhote

Verdeyme

et al. 2021

Int. J. Microw. Wireless Technol.

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In this work, microwave planar resonators are printed with silver nanoparticle inks using two printing technologies, inkjet printing and aerosol jet printing, on polyimide substrates. The microwave resonators used in this paper operate in the frequency band 5–21 GHz. The printing parameters, such as the number of printed layers of silver nanoparticle inks, drop spacing, and sintering time, were optimized to ensure repeatable and conductive test patterns. To improve the electrical conductivity of silver deposits, which are first dried using a hot plate or an oven, two complementary sintering methods are used: intense pulsed light (IPL) and laser sintering. This paper presents the results of different strategies for increasing the final quality factor of printed planar resonators and the trade-offs (sintering time versus final conductivity/unloaded Q) that can be reached. Improvement of the resonator unloaded quality factor (up to +55%) and of the equivalent electrical conductivity (up to 14.94 S/μm) at 14 GHz have been obtained thanks to these nonconventional sintering techniques. The total sintering durations of different combinations of sintering techniques (hot plate, oven, IPL, and laser) range from 960 to 90 min with a final conductivity from 14.94 to 7.1 S/μm at 14 GHz, respectively.

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Section: Discussionmentioning

confidence: 96%

Section: Description Of the Sintering Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of the conductivity of microwave components printed by inkjet and aerosol jet on polymeric substrates by IPL and laser sintering

Hajjaji

Delhote

Verdeyme

et al. 2021

Int. J. Microw. Wireless Technol.

Self Cite

View full text Add to dashboard Cite

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“…Moreover, these parameters change with the substrate material, the pretreatment of the substrate, and the ink composition [33]. Early work has investigated laser and sample parameters for laser sintering of spin-coated, IJP, and AJP samples [34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

“…IJP was studied by many researchers, such as Yang [36], Lee [37], Hajjaji [38], and Niittyen et al [39]. Yang et al [36] investigated a model of the transient heat transfer and molecular dynamics of laser sintering of metal NPs and laser sintering of IJP silver.…”

Section: Introductionmentioning

confidence: 99%

Laser Sintering Direct Ink Write Silver Nanoflake Ink for On-Demand Manufacturing of Electronics in Space

Schlake,

Kandadai

2024

IEEE Flex. Electron.

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Developing manufacturing methods for flexible electronics will enable and improve the large-scale production of flexible, spatially-efficient, and lightweight devices. Laser sintering is a promising post-processing method to produce consolidated films for flexible electronic devices while reducing power consumption compared to standard thermal sintering. This work further explores laser sintering of direct ink write (nScrypt) printed silver as a continuation of previous studies on nScryptprinted silver and aerosol jet-printed gold, platinum, and titanium dioxide for manufacturing printed electronics on the International Space Station. Four different laser wavelengths are studied for laser sintering nScrypt silver nanoflake ink on flexible polyimide and rigid glass substrates. The laser systems investigated are continuous wave (CW) 808 nm, CW 445 nm, CW 1064 nm, and pulsed femtosecond (fs) 1040 nm lasers. The laser power and scanning speed are varied to compare the laser systems and optimize laser sintering parameters for the silver ink. The resistivity of the laser-sintered silver NPs is compared to the resistivity of the unsintered silver to demonstrate the effectiveness of laser sintering. An optimal resistivity of 5.81×10 -8 Ω-m is achieved for the nScrypt silver laser sintered using a fs 1040 nm laser.

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Conductivity Improvement of Microdispensed Microstrip Lines and Grounded Coplanar Waveguides Using Laser Micromachining

Kacar

Weller

Mumcu

2020

IEEE Trans. Compon., Packag. Manufact. Technol.

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Optimizing the Conductivity of Ink-Jet Printed Microwave Components on Polymer Substrates by Laser Sintering

Cited by 3 publications

References 7 publications

Optimization of the conductivity of microwave components printed by inkjet and aerosol jet on polymeric substrates by IPL and laser sintering

Optimization of the conductivity of microwave components printed by inkjet and aerosol jet on polymeric substrates by IPL and laser sintering

Laser Sintering Direct Ink Write Silver Nanoflake Ink for On-Demand Manufacturing of Electronics in Space

Conductivity Improvement of Microdispensed Microstrip Lines and Grounded Coplanar Waveguides Using Laser Micromachining

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