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Reduction of Graphene Oxide by Laser Scribing in …

Abstract. Laser scribing, by far proposed as a method for efficiently transforming graphene oxide into reduced graphene, has been employed, using a CW laser beam, to study the modifications of graphene oxide scribed under different controlled atmospheres, including air, N 2, Ar, and a 95 : 5 Ar/H 2 mixture. We have found that laser scribing effects, including chemical composition, order degree ...

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Supercapacitors created from laser-scribed graphene | …

Supercapacitors created from laser-scribed graphene. Ashley N. Paddock, [email protected] A novel graphene-based electrode, produced with a standard LightScribe DVD optical drive, ends the search for an optimal electrochemical capacitor. The discovery could pave the way for a new class of flexible energy-storage devices.

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A Laser Scribed Graphene Oxide and Polyimide Hybrid …

A Laser Scribed Graphene Oxide and Polyimide Hybrid Strain Sensor. Article Preview. Abstract: Strain sensors are devices used in applications such as electronic skin, prosthetic limbs, and e-textile applications, etc., for the purpose of measuring the physical elongation of a desired structure under a given or applied force. An artificial ...

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A Laser Scribed Graphene Oxide and Polyimide Hybrid …

A Laser Scribed Graphene Oxide and Polyimide Hybrid Strain Sensor. Article Preview. Abstract: Strain sensors are devices used in applications such as electronic skin, prosthetic limbs, and e-textile applications, etc., for the purpose of measuring the physical elongation of a desired structure under a given or applied force. An artificial ...

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Enhanced electrochemical performance of laser …

High-performance supercapacitor electrode films of laser scribed graphene (LSG) decorated with manganese dioxide (MnO2) are produced on flexible substrates by two methods. One composite film of small diameter MnO2 particles directly added into graphene oxide sheets is reduced by a facile laser scribing technology. The other composite film is fabricated by in situ synthesis and laser scribing ...

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Biosensors | Free Full-Text | Laser Scribed Graphene ...

In foods, high levels of biogenic amines (BA) are the result of microbial metabolism that could be affected by temperatures and storage conditions. Thus, the level of BA is commonly used as an indicator of food safety and quality. This manuscript outlines the development of laser scribed graphene electrodes, with locally sourced materials, for reagent-free food safety biosensing.

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Biosensors | Free Full-Text | Laser Scribed Graphene ...

In foods, high levels of biogenic amines (BA) are the result of microbial metabolism that could be affected by temperatures and storage conditions. Thus, the level of BA is commonly used as an indicator of food safety and quality. This manuscript outlines the development of laser scribed graphene electrodes, with locally sourced materials, for reagent-free food safety biosensing.

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Flexible temperature sensor with laser scribed …

CO 2 laser is used to reduce the graphene oxide into highly conductive rGO with less than 3×10 -3 S/m in resistivity. Laser-induced reduction is a very fast, facile, chemical-free, room temperature process that uses the photo-thermal reactivity of GO.

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Laser-scribed graphene presents an opportunity to …

Graphene application within electrochemical sensing has been widely reported, but mainly as a composite, which adds summative effects to an underlying electrode. In this work we report the use of laser-scribed graphene as a distinct electrode patterned on a non-conducting flexible substrate. The laser-scribed graphene electrode compared favourably to established carbon macroelectrodes when ...

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Laser-Scribed Graphene Electrodes for Aptamer-Based ...

2017-5-26 · Graphene as a transducer material has produced some of the best-performing sensing approaches to date opening the door toward integrated miniaturized all-carbon point-of-care devices. Addressing this opportunity, laser-scribed graphene (LSG) electrodes are demonstrated here as highly sensitive and reliable biosensor transducers in blood serum ...

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Laser-Scribed Graphene | SpringerLink

Nanostructures and Characteristics of Graphene and Graphene Oxides. Cite this entry as: (2016) Laser-Scribed Graphene. In: Bhushan B. (eds) Encyclopedia of Nanotechnology.

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Flexible Micro Supercapacitor Based on Laser Scribed ...

In the present work, graphene powder has been synthesized by laser scribing method. The resulted flexible light-scribed graphene is very appropriate to be utilized as micro-supercapacitors .Graphene conducts electricity and heat better than anything else and has combination of unique optical and mechanical properties.

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Laser-Scribed Graphene | SpringerLink

Nanostructures and Characteristics of Graphene and Graphene Oxides. Cite this entry as: (2016) Laser-Scribed Graphene. In: Bhushan B. (eds) Encyclopedia of Nanotechnology.

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Laser Scribing of High-Performance and Flexible …

Infrared Route to Graphene Electrodes Electrochemical capacitors can deliver large amounts of power quickly, but have limited energy storage because only the surface regions of electrodes can store charge. Graphene represents an alternative to activated carbon electrodes because of their high conductivity and surface area, but graphene sheets tend to reassociate and lose surface area. El-Kady ...

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Laser Scribing of High-Performance and Flexible …

Schematic illustration of the fabrication of laser-scribed graphene-based electrochemical ca- NanoSystems Institute, University of California, Los Angeles pacitors. (A to D) A GO film supported on a flexible substrate is placed on top of a LightScribe-enabled (UCLA), Los Angeles, CA 90095, USA. 2Department of Chem- istry, Faculty of Science ...

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Laser scribed graphene: A novel platform for highly ...

2020-12-28 · Laser-scribed graphene electrodes (LSGEs) have recently shown a potential for the development of electrochemical biosensors thanks to their electronic properties, porous structures, and large surface area that can support the charge transfer. In this paper, the authors present a comparative study of the electrochemical performances of LSGEs ...

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Researchers shrink laser-induced graphene for flexible ...

The technique creates laser-induced graphene with features more than 60% smaller than the macro version and almost 10 times smaller than typically achieved with an infrared laser. Credit: Tour ...