All-inkjet-printed dissolved oxygen sensors on flexible plastic substrates

Moya, Ana; Sowade, Enrico; Campo, F. Javier del; Mitra, Kalyan Yoti; Ramón, Eloi; Villa, Rosa; Baumann, Reinhard R.; Gabriel, Gemma

doi:10.1016/j.orgel.2016.10.002

Cited by 58 publications

(63 citation statements)

References 39 publications

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“…Photonic curing after thermal sintering at 130 • C yields structures that feature about 10% of the conductivity of bulk gold, which is a 60-fold higher conductivity than previously reported structures on cyclic olefin polymer [16] that were sintered in Ar plasma for 30 min. On other substrates, like polyethylene naphthalate (PEN) or SU-8 covered polytetrafluoroethylene (PTFE) conductivities of a comparable order of magnitude were achieved by thermal sintering at 150 • C [17] and 130 • C [37], respectively. However, the latter sources report the necessity of performing an electrochemical activation step prior to use.…”

Section: Discussionmentioning

confidence: 99%

“…By using nanoparticle gold inks, the melting point typically can be lowered to 150 • C and below [14,15]. This allows the fabrication of conductive gold structures on polymer substrates with a relatively low glass-transition temperature, but high resistances [16] or a required post-production activation step [17] demonstrate that challenges still remain.…”

Section: Introductionmentioning

confidence: 99%

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Inkjet-Printing of Nanoparticle Gold and Silver Ink on Cyclic Olefin Copolymer for DNA-Sensing Applications

Trotter

Juric

Bagherian

et al. 2020

Sensors

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Inkjet technology as a maskless, direct-writing technology offers the potential for structured deposition of functional materials for the realization of electrodes for, e.g., sensing applications. In this work, electrodes were realized by inkjet-printing of commercial nanoparticle gold ink on planar substrates and, for the first time, onto the 2.5D surfaces of a 0.5 mm-deep microfluidic chamber produced in cyclic olefin copolymer (COC). The challenges of a poor wetting behavior and a low process temperature of the COC used were solved by a pretreatment with oxygen plasma and the combination of thermal (130 • C for 1 h) and photonic (955 mJ/cm 2 ) steps for sintering. By performing the photonic curing, the resistance could be reduced by about 50% to 22.7 µΩ cm. The printed gold structures were mechanically stable (optimal cross-cut value) and porous (roughness factors between 8.6 and 24.4 for 3 and 9 inkjet-printed layers, respectively). Thiolated DNA probes were immobilized throughout the porous structure without the necessity of a surface activation step. Hybridization of labeled DNA probes resulted in specific signals comparable to signals on commercial screen-printed electrodes and could be reproduced after regeneration. The process described may facilitate the integration of electrodes in 2.5D lab-on-a-chip systems.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inkjet-Printing of Nanoparticle Gold and Silver Ink on Cyclic Olefin Copolymer for DNA-Sensing Applications

Trotter

Juric

Bagherian

et al. 2020

Sensors

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“…This approach offers the possibility of modifying a certain substrate with a plenty of materials, i.e. enzymes [17], nanoparticles [18], conductive inks [19], etc. Even if commercial formulations of printable inks are available, one can obtain homemade printable inks that are strictly related on their rheological properties such as viscosity and surface tension.…”

Section: Introductionmentioning

confidence: 99%

Electroanalysis moves towards paper-based printed electronics: carbon black nanomodified inkjet-printed sensor for ascorbic acid detection as a case study

Cinti

Colozza

Cacciotti

et al. 2018

Sensors and Actuators B: Chemical

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“…Recently, inkjet printing has become an attractive alternative for microfabrication. It is an additive manufacturing technique that enables the mask-and contact-less deposition of a variety of functional materials, such as metal and metal oxide nanoparticles, organometallic compounds, conductive polymers, carbonaceous materials, protein microarrays and living cells with high accuracy and micrometer resolution using picoliter droplets [24][25][26][27][28][29][30][31][32][33][34][35]. The advantages of IJP include low ink waste, easily changeable layouts and the possibility of multi material deposition to create material gradients and multi-layer devices [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, IJP can reduce the overall fabrication time and costs of an entire device due to the possibility of rapid iterative design changes during the sensor development stage and due to the up-scalability of the production rate from the prototype to the industrial level. In this way, IJP has been used for the fabrication of a broad range of chemical sensors based on gold on paper [39][40][41] as well as polymer substrates [27,42,43], silver [30,44] polyaniline [45,46] or CNTs [47][48][49][50]. CNTs are attractive functional materials for sensing platforms due to several advantageous CNT properties, such as good electrical conductivity, chemical and mechanical stability, high flexibility, electrocatalytic activity and reduced surface fouling characteristics for specific applications [51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Inkjet-printed microtiter plates for portable electrochemical immunoassays

Jović

Zhu

Lesch

et al. 2017

Journal of Electroanalytical Chemistry

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Herein, we present the large-scale fabrication of multiplexed three-electrode sensors used in a point-of-care device platform that couples a magnetic bead-based immunoassay strategy with amperometric detection for rapid and highly sensitive analysis. The multiplexed sensors consisted of eight independent electrochemical cells, each with a carbon nanotube (CNT) working electrode, CNT counter electrode and a silver-silver chloride quasi-reference electrode. The microchips were fabricated on flexible polyethylene terephthalate (PET) sheets by sequential multilayer inkjet printing (IJP) of silver, CNT and insulator inks that were either simultaneously or subsequently post-processed (e.g. through UV photo-polymerization or photonic curing). Finally, plastic wells were mounted on top of the inkjet-printed patterns to obtain an eight-well microtiter plate where each well had a solution capacity of 50 μL. Due to the high precision of the IJP process, the microtiter plates showed high reproducibility among the individual electrochemical cells (1-2% of deviation). Furthermore, the microchips can be reusable for at least up to 20 times as demonstrated herein. In a customized multichannel potentiostat with eight implemented magnets matching the positions of the working electrodes, the electrochemical readout of magnetic bead based sandwich and competitive immunoassays was successfully realized for the detection of thyroid-stimulating hormone (TSH) and atrazine (ATR) in aqueous and urine samples, respectively. The achieved limits of detection for ATR (i.e. 0.01 μg/L) and TSH (i.e. 0.5 μIU/mL) demonstrated the potential of the IJP microtiter plates for the environmental and biological quantification of analytes in a very reliable high throughput platform. This work shows that IJP has certainly reached the status of a batch production tool for electroanalytical sensing platforms.

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All-inkjet-printed dissolved oxygen sensors on flexible plastic substrates

Cited by 58 publications

References 39 publications

Inkjet-Printing of Nanoparticle Gold and Silver Ink on Cyclic Olefin Copolymer for DNA-Sensing Applications

Inkjet-Printing of Nanoparticle Gold and Silver Ink on Cyclic Olefin Copolymer for DNA-Sensing Applications

Electroanalysis moves towards paper-based printed electronics: carbon black nanomodified inkjet-printed sensor for ascorbic acid detection as a case study

Inkjet-printed microtiter plates for portable electrochemical immunoassays

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