Functional aqueous-based polyaniline inkjet inks for fully printed high-performance pH-sensitive electrodes

Bilbao, Emanuel; Kapadia, Sunil; Riechert, Verónica Mariel; Amalvy, Javier Ignacio; Molinari, Fabricio N.; Escobar, Mariano; Baumann, Reinhard R.; Monsalve, Leandro N.

doi:10.1016/j.snb.2021.130558

Cited by 20 publications

(11 citation statements)

References 41 publications

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“…All-solid-state (ASS) pH electrodes were fabricated via screen printing. − Briefly, the pattern of the pH electrodes was designed using the CorelDraw software and printed on a screen mesh. Subsequently, an Ag/AgCl layer, a carbon layer, and an insulating layer were printed and dried onto a cleaned PET plate.…”

Section: Methodsmentioning

confidence: 99%

Paper-Based Sandwich-Structured Wearable Sensor with Sebum Filtering for Continuous Detection of Sweat pH

et al. 2023

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Wearable sweat sensors, a product of the development of flexible electronics and microfluidic technologies, can continuously and noninvasively monitor abundant biomarkers in human sweat; however, sweat interferences, such as sebum, can reduce sensor reliability and accuracy. Herein, for the first time, the influence of sebum on the potentiometric response of an all-solidstate pH sensor was studied, and the obtained experimental results show that sebum mixed in sweat can decrease the potential response of the sensor and the slope of its calibration curve. A paper-based sandwich-structured pH sensor that can filter the sebum mixed in sweat was proposed based on commonly used oilcontrol sheets. Moreover, the hydrophilic properties, microstructure, and microfluidic performance of the sensor were investigated. The detection performance of the paper-based sandwich-structured pH sensor was comprehensively evaluated in terms of calibration in the presence of sebum and potentiometric response upon the addition of sebum. Furthermore, the antiinterference ability of the sensor was evaluated using different analytes under various deformation conditions. On-body trials were conducted to verify the performance, and their results showed that the proposed sensor can filter over 90% of the sebum in sweat, significantly enhancing sensor reliability and accuracy. Additionally, microfluidic channels could be simply fabricated using a scissor and paper, obviating the need for complex micromachining processes, such as photolithography and laser engraving. Overall, this work illustrates the influence of sebum on the detection performance of traditional potentiometric wearable sensors and paves the way for their development for real-world applications.

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Section: Methodsmentioning

confidence: 99%

Paper-Based Sandwich-Structured Wearable Sensor with Sebum Filtering for Continuous Detection of Sweat pH

et al. 2023

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“…Moreover, these printed electrodes can remove complicated photolithography processes for electrode fabrication, thereby securing product price competitiveness in the market. [1][2][3] The combination of a exible substrate and printed electronics has expanded the application of electronic devices to wearables and curved designs. A low-temperature process is desirable for printed electrodes due to the low melting temperature of the exible plastic substrate (∼150 °C).…”

Section: Introductionmentioning

confidence: 99%

Room temperature processed protective layer for printed silver electrodes

Kim

Park

et al. 2023

RSC Adv.

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“…Some earlier works have been devoted to DW approaches where PANI was doped by sulfonic acid or was a nanofibrous material for applications in sensor technology. − Here, we report on the development of two different novel types of PANI-based inks, well suited for AJP systems. The produced materials have been first characterized by SEM and current–voltage measurements to explore the formation and optimization of well-defined, compact, and conducting films by the developed inks.…”

Section: Introductionmentioning

confidence: 99%

Aerosol Jet Printed Organic Memristive Microdevices Based on a Chitosan:PANI Composite Conductive Channel

Sajapin

Vurro

D’Angelo

et al. 2022

ACS Appl. Electron. Mater.

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In this study we show a chitosan:polyaniline (CPA)-based ink, responding to eco-biofriendly criteria, specifically developed for the manufacturing of the first organic memristive device (OMD) with an aerosol jet printed conductive channel. Our contribution is in the context of bioelectronics, where there is an increasing interest in emulating neuromorphic functions. In this framework, memristive devices and systems have been shown to be well suited. In particular organic-based devices are envisaged as very promising in some applications, such as brain–machine interfacing, owing to specific properties of organics (e.g., biocompatibility, mixed ionic–electronic conduction). On the other hand, the research activities on flexible organic (bio)electronic devices and direct writing (DW) noncontact techniques increasingly overlap in the effort of achieving reliable applications benefiting from the rapid prototyping to accomplish a fast device optimization. In this context, ink-based techniques, such as aerosol jet printing (AJP), although particularly well suited to implement 3D-printed electronics due to advantages it offers in terms of a wide set of allowed printable materials, still require research efforts aimed at conferring printability to the desired precursors. The developed CPA composite was characterized by FTIR, DLS, and MALDI-TOF techniques, while the related aerosol jet printed films were studied by SEM and profilometry. Taking advantage of the intrinsic and stable electrical conductivity of CPA films, which do not necessarily require any acidic treatment to promote a sustained charge carrier conduction, 10 μm short-channel OMDs were hence manufactured by interfacing the printed CPA layers with a solid polyelectrolyte (SPE). We accordingly demonstrated prototypes of stable and best performing OMD devices with downscaled features, showing well-defined counterclockwise hysteresis/rectification and an enhanced durability. These properties pave the way to further improving performance, as well as to realizing a direct integration of the devices into hardware neural networks by in-line fabrication routes.

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Functional aqueous-based polyaniline inkjet inks for fully printed high-performance pH-sensitive electrodes

Cited by 20 publications

References 41 publications

Paper-Based Sandwich-Structured Wearable Sensor with Sebum Filtering for Continuous Detection of Sweat pH

Paper-Based Sandwich-Structured Wearable Sensor with Sebum Filtering for Continuous Detection of Sweat pH

Room temperature processed protective layer for printed silver electrodes

Aerosol Jet Printed Organic Memristive Microdevices Based on a Chitosan:PANI Composite Conductive Channel

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