Transparent Electrodes with Nanotubes and Graphene for Printed Optoelectronic Applications

Słoma, Marcin; Wróblewski, Grzegorz; Janczak, Daniel; Jakubowska, М.

doi:10.1155/2014/143094

Cited by 12 publications

(7 citation statements)

References 44 publications

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“…It is worth emphasizing that the facility of application on the PET substrate is because the organic–inorganic copolymer composite with iron oxide powder is in the form of a ready-to-use and commercially available formulation and that the printing process by means of thermal curing is possible with the basic office device. In turn, in the case of carbon nanomaterial-based pastes and inks applied on PET substrates, it is necessary to use dedicated screen printing or spray coating tools [ 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

Versatile and Easily Designable Polyester-Laser Toner Interfaces for Site-Oriented Adsorption of Antibodies

Drozd

Ivanova

Tokarska

et al. 2022

IJMS

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Laser toners appear as attractive materials for barriers and easily laminated interphases for Lab-on-a-Foil microfluidics, due to the excellent adhesion to paper and various membranes or foils. This work shows for the first time a comprehensive study on the adsorption of antibodies on toner-covered poly(ethylene terephthalate) (PET@toner) substrates, together with assessment of such platforms in rapid prototyping of disposable microdevices and microarrays for immunodiagnostics. In the framework of presented research, the surface properties and antibody binding capacity of PET substrates with varying levels of toner coverage (0–100%) were characterized in detail. It was proven that polystyrene–acrylate copolymer-based toner offers higher antibody adsorption efficiency compared with unmodified polystyrene and PET as well as faster adsorption kinetics. Comparative studies of the influence of pH on the effectiveness of antibodies immobilization as well as measurements of surface ζ-potential of PET, toner, and polystyrene confirmed the dominant role of hydrophobic interactions in adsorption mechanism. The applicability of PET@toner substrates as removable masks for protection of foil against permanent hydrophilization was also shown. It opens up the possibility of precise tuning of wettability and antibody binding capacity. Therefore, PET@toner foils are presented as useful platforms in the construction of immunoarrays or components of microfluidic systems.

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Section: Resultsmentioning

confidence: 99%

Versatile and Easily Designable Polyester-Laser Toner Interfaces for Site-Oriented Adsorption of Antibodies

Drozd

Ivanova

Tokarska

et al. 2022

IJMS

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“…Investigated TFEL displays consisted of 4 layers shown in Figure 1: a functional filler (GNPs, luminophores and dielectric powders) and a polymer vehicle -polymethyl methacrylate (PMMA) 1 . Oligo walled carbon nanotubes were obtained by the process of combusting the chemical vapor deposition (CCVD).They have a small diameter with length around 10-20 m and they are organized in bundles.…”

Section: Structure and Proprieties Of The Investigated Displaysmentioning

confidence: 99%

Detection of subsurface defects and measurement of thickness of screen layers made of graphene and carbon nanotubes with application of full-field optical coherence tomography in Linnik configuration

Mlynarska

Tomczewski²,

Pakuła

et al. 2015

SPIE Proceedings

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Optical coherence tomography (OCT) is noncontact and nondestructive interferometric method which allows visualization of internal structure of an investigated sample. Till now it has found many applications in measurements of biological tissues, technical materials and conservation of art. Optical coherence tomography in full-field configuration is a great technique for visualization of subsurface structures of measured sample with high resolution. In this technique, en-face data acquisition is applied, which allows application of microscope objectives with high numerical aperture while the depth of field is not a problem. These objectives allow obtaining ultra high transverse resolution like in traditional microscopy. Additionally, light sources with broad spectrum, like low cost incandescent lamps (i.e. halogen lamp), allow measurements with micrometer scaleaxial resolution.In this paper the authors present application of full-field optical coherence tomography with a Linnik microscope for the thickness measurement of layers in flexible display with electrodes made of graphene and carbone nanotubes. Thicknesses of layer have a huge impact on the display parameters. There is a correlation between the thickness of the graphene layer and its electrical resistance. Graphene is a new and very promising material which is durable, flexible and has a good adhesion to diverse substrates. It gives a theoretical possibility to create flexible electronics, such as graphene bendable screens. Using OCT we can evaluate the quality of printed layers and detect subsurface defects.

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“…Transparent conducting metal oxide (TCO) electrodes are widely used in many fields of modern electronics (see [39], and the references in it) because these offer the combination of optical and electric methods in biosensor applications. The oxidized, coloured product of the enzyme reaction is usually very specific and its accumulation can be easily detected by optical spectroscopy, while the electric method offers good sensitivity [40,41].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Sensing of Hydrogen Peroxide by ITO/MWCNT/Horseradish Peroxidase Enzyme Electrode

Magyar

Rinyu

Janovics

et al. 2016

Journal of Nanomaterials

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The accurate and sensitive determination of H2O2 is very important in many cases because it is a product of reactions catalysed by several oxidase enzymes in living cells and it is essential in environmental and pharmaceutical analyses. The fabrication of enzyme protein activity based biosensors is a very promising way for this purpose because the function of biological molecules is very specific, sensitive, and selective. Horseradish peroxidase (HRP) is the most commonly used enzyme for H2O2 detection because it can oxidize hydrogen atoms and, for example, xenobiotics in the presence of H2O2. In order to define the limit of detection (LOD) of H2O2 we made calibrations with guaiacol and amplex red (AR), which are hydrogen donors of HRP. The accumulation of the reaction products, tetraguaiacol, and resorufin, respectively, then can be easily detected by absorption or emission (fluorescence) spectroscopy. In our experiments an enzyme electrode was fabricated from ITO (indium tin oxide), functionalized multiwalled carbon nanotubes (f-MWCNTs), and HRP. Although the enzyme activity was smaller by about two orders of magnitude when the enzyme was bound to the f-MWCNTs (ca. 10−2 M H2O2/(M HRP·sec) compared to ca. 2 M H2O2/(M HRP·sec) and 5 M H2O2/(M HRP·sec) with AR and guaiacol in buffer solution), LOD of the H2O2 decomposition was about 6 pM H2O2/sec and 10 pM H2O2/sec in the case of AR and guaiacol, respectively.

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Transparent Electrodes with Nanotubes and Graphene for Printed Optoelectronic Applications

Cited by 12 publications

References 44 publications

Versatile and Easily Designable Polyester-Laser Toner Interfaces for Site-Oriented Adsorption of Antibodies

Versatile and Easily Designable Polyester-Laser Toner Interfaces for Site-Oriented Adsorption of Antibodies

Detection of subsurface defects and measurement of thickness of screen layers made of graphene and carbon nanotubes with application of full-field optical coherence tomography in Linnik configuration

Real-Time Sensing of Hydrogen Peroxide by ITO/MWCNT/Horseradish Peroxidase Enzyme Electrode

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