Water Activated Graphene Oxide Transfer Using Wax Printed Membranes for Fast Patterning of a Touch Sensitive Device

Baptista-Pires, Luis; Mayorga‐Martinez, Carmen C.; Medina‐Sánchez, Mariana; Montón, Helena; Merkoçi, Arben

doi:10.1021/acsnano.5b05963

Cited by 31 publications

(30 citation statements)

References 49 publications

(73 reference statements)

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“…Graphene oxide (GO) has also been used for the preparation of conductivei nks. [31][32][33][34] Owing to the abundant hydrophilic groupst hat cover their surface, GO nanosheets are easily dispersed in water and thus can also be deposited to form homogenous patterns. Then, ar eduction step follows to induce electrical conductivity in the final patterns.A lthough various reducing techniquesh ave been used, the conductivity of the reduced GO nanoplatelets remains unsatisfactory.S ong and co-workers [34] showedr ecently that giant GO nanoplatelets that were well-orienteda nd assembled duringt he printing process can reach high conductivity values (4.5 10 4 Sm À1 )a fter chemicalr eductionb yh ydroiodic acid.…”

Section: Introductionmentioning

confidence: 99%

Highly Conductive Water‐Based Polymer/Graphene Nanocomposites for Printed Electronics

Koutsioukis

Georgakilas

Belessi

et al. 2017

Chemistry A European J

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The preparation and characterization of highly conductive carbon inks is described based on nanocomposites that combine a polystyrene-acrylic resin or water-soluble polymers with a hydrophilic graphene/carbon nanotube hybrid. The water-based carbon inks showed high electrical conductivity and could be effectively used in advanced technologies such as gravure printing for printed electronics. Moreover, the conductivity was shown to be increased with a power law of the nanohybrid volume fraction, with an exponent close to that predicted from the percolation theory, indicating a limited impact of the polymer tunneling barrier on the electrical conductivity of such nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Highly Conductive Water‐Based Polymer/Graphene Nanocomposites for Printed Electronics

Koutsioukis

Georgakilas

Belessi

et al. 2017

Chemistry A European J

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“…spin-coating methods, layer-by-layer assembly or patterning through wax-printed membranes. [4][5][6] Optical transparency may play a key role in visual detection, optoelectronic interfaces, and wearable devices. In this context, light transmittance in GO can be controlled according to GO layers.…”

Section: The Number Of Layers Lateral Size and Oxidation Degree Of mentioning

confidence: 99%

Graphene Oxide as an Optical Biosensing Platform: A Progress Report

2018

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IntroductionAs a 2D material, graphene oxide (GO) is a lattice-like nanostructure of hexagonal carbon rings disrupted by oxygen-containing moieties. In 2012, we discussed the outstanding physicochemical properties offered by GO and how these features can be exploited in unprecedented optical biosensing systems. [1] In fact, GO can be processed in suspension, easily complexed with biomolecules, and offers a universal highly efficient long-range photoluminescence quenching agent-among other functional properties. Furthermore, we highlighted that GO photoluminescences with energy transfer donor/acceptor molecules exposed A few years ago, crucial graphene oxide (GO) features such as the carbon/oxygen ratio, number of layers, and lateral size were scarcely investigated and, thus, their impact on the overall optical biosensing performance was almost unknown. Nowadays valuable insights about these features are well documented in the literature, whereas others remain controversial. Moreover, most of the biosensing systems based on GO were amenable to operating as colloidal suspensions. Currently, the literature reports conceptually new approaches obviating the need of GO colloidal suspensions, enabling the integration of GO onto a solid phase and leading to their application in new biosensing devices. Furthermore, most GO-based biosensing devices exploit photoluminescent signals. However, further progress is also achieved in powerful label-free optical techniques exploiting GO in biosensing, particularly using optical fibers, surface plasmon resonance, and surface enhanced Raman scattering. Herein, a critical overview on these topics is offered, highlighting the key role of the physicochemical properties of GO. New challenges and opportunities in this exciting field are also highlighted.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201805043.in a planar surface. [1] However, GO properties can be tailored according to its oxidation degree, lateral size, and number of layers, which was something little explored 6 years ago, and thus their impact on the overall biosensing performance was almost unknown. In addition, most of the biosensing systems based on GO were amenable to working as colloidal suspensions. Though, recent literature reports conceptually new approaches obviating the need of colloidal suspensions, which facilitates integration of GO-based biosensors into the solid phase and allows for their applications in new devices. Furthermore, the majority of the GO-based optical biosensing techniques rely on photoluminescent signals. However, further progress has also been achieved in powerful label-free optical techniques exploiting GO in biosensing. Here, we introduce a progress report on this exciting topic, underscoring challenges and opportunities in (bio)sensing accordingly. Number of LayersGO aqueous suspensions are highly stable in the form of mono layers. However, GO multilayer films can be built via

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“…[46].B riefly, graphene was dispersed in water at ac oncentration of 0.25 mg mL À1 and filtered through ah ydrophilic 0.025 mmp ore size nitrocellulose filter membranew ith ad iameter of 47 mm having had ap attern printed on it by using aX erox ColorQube 8570 printer.T his pattern was then transferred onto the paper by aroll-to-roll mechanism (built into the printer) [46].B riefly, graphene was dispersed in water at ac oncentration of 0.25 mg mL À1 and filtered through ah ydrophilic 0.025 mmp ore size nitrocellulose filter membranew ith ad iameter of 47 mm having had ap attern printed on it by using aX erox ColorQube 8570 printer.T his pattern was then transferred onto the paper by aroll-to-roll mechanism (built into the printer)…”

Section: Materials and Reagentsmentioning

confidence: 99%

Design and Fabrication of Printed Paper‐Based Hybrid Micro‐Supercapacitor by using Graphene and Redox‐Active Electrolyte

et al. 2018

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Inspired by future needs of flexible, simple, and low-cost energy storage devices, smart graphene-based micro-supercapacitors on conventional Xerox paper substrates were developed. The use of redox-active species (iodine redox couple) was explored to further improve the paper device's performance. The device based on printed graphene paper itself already had a remarkable maximum volumetric capacitance of 29.6 mF cm (volume of whole device) at 6.5 mA cm . The performance of the hybrid electrode with redox-active potassium iodide at the graphene surface was tested. Remarkably, the hybrid device showed improved volumetric capacitance of 130 mF cm . The maximum energy density for a graphene+KI device in H SO electrolyte was estimated to be 0.026 mWh cm . Thus, this work offers a new simple, and lightweight micro-supercapacitor based on low-cost printed graphene paper, which will have great applications in portable electronics.

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Water Activated Graphene Oxide Transfer Using Wax Printed Membranes for Fast Patterning of a Touch Sensitive Device

Cited by 31 publications

References 49 publications

Highly Conductive Water‐Based Polymer/Graphene Nanocomposites for Printed Electronics

Highly Conductive Water‐Based Polymer/Graphene Nanocomposites for Printed Electronics

Graphene Oxide as an Optical Biosensing Platform: A Progress Report

Design and Fabrication of Printed Paper‐Based Hybrid Micro‐Supercapacitor by using Graphene and Redox‐Active Electrolyte

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