Laser Synthesized Graphene and Its Applications

Scardaci, Vittorio

doi:10.3390/app11146304

Cited by 10 publications

(8 citation statements)

References 90 publications

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“…Moreover, some defects related to topology and vacancy still remains on the reduced sheet even after decomposition of the groups with the release of CO 2 with high annealing temperature [ 76 ]. On the other hand, a special thermal reduction method called laser scribing has been widely used over the last decade [ 77 ]. Laser scribing is a facile, fast, and cost-efficient method for the production of graphene.…”

Section: Properties and Synthesis Of Graphenementioning

confidence: 99%

Advanced wearable biosensors for the detection of body fluids and exhaled breath by graphene

et al. 2022

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Given the huge economic burden caused by chronic and acute diseases on human beings, it is an urgent requirement of a cost-effective diagnosis and monitoring process to treat and cure the disease in their preliminary stage to avoid severe complications. Wearable biosensors have been developed by using numerous materials for non-invasive, wireless, and consistent human health monitoring. Graphene, a 2D nanomaterial, has received considerable attention for the development of wearable biosensors due to its outstanding physical, chemical, and structural properties. Moreover, the extremely flexible, foldable, and biocompatible nature of graphene provide a wide scope for developing wearable biosensor devices. Therefore, graphene and its derivatives could be trending materials to fabricate wearable biosensor devices for remote human health management in the near future. Various biofluids and exhaled breath contain many relevant biomarkers which can be exploited by wearable biosensors non-invasively to identify diseases. In this article, we have discussed various methodologies and strategies for synthesizing and pattering graphene. Furthermore, general sensing mechanism of biosensors, and graphene-based biosensing devices for tear, sweat, interstitial fluid (ISF), saliva, and exhaled breath have also been explored and discussed thoroughly. Finally, current challenges and future prospective of graphene-based wearable biosensors have been evaluated with conclusion. Graphical abstract Graphene is a promising 2D material for the development of wearable sensors. Various biofluids (sweat, tears, saliva and ISF) and exhaled breath contains many relevant biomarkers which facilitate in identify diseases. Biosensor is made up of biological recognition element such as enzyme, antibody, nucleic acid, hormone, organelle, or complete cell and physical (transducer, amplifier), provide fast response without causing organ harm.

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Section: Properties and Synthesis Of Graphenementioning

confidence: 99%

Advanced wearable biosensors for the detection of body fluids and exhaled breath by graphene

et al. 2022

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“…Graphene materials are formed during the cooling process, where the reaction atmosphere, laser wavelength, light source, and starting material composition influence the graphene properties. [68] Substrates of quartz [69] and wood [70] were applied in an early study; for instance, Ye et al transformed wood into hierarchical porous laser-induced graphene, where CO 2 as a working substance induced laser with a wavelength of 10.6 μm. [70] The laser obtained a maximum power of 75 W, and the graphene layer decreased with increased power.…”

Section: Bottom-up Methodsmentioning

confidence: 99%

Synthesis and Functionalization of Graphene Materials for Biomedical Applications: Recent Advances, Challenges, and Perspectives

et al. 2023

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Since its discovery in 2004, graphene is increasingly applied in various fields owing to its unique properties. Graphene application in the biomedical domain is promising and intriguing as an emerging 2D material with a high surface area, good mechanical properties, and unrivalled electronic and physical properties. This review summarizes six typical synthesis methods to fabricate pristine graphene (p‐G), graphene oxide (GO), and reduced graphene oxide (rGO), followed by characterization techniques to examine the obtained graphene materials. As bare graphene is generally undesirable in vivo and in vitro, functionalization methods to reduce toxicity, increase biocompatibility, and provide more functionalities are demonstrated. Subsequently, in vivo and in vitro behaviors of various bare and functionalized graphene materials are discussed to evaluate the functionalization effects. Reasonable control of dose (<20 mg kg−1), sizes (50–1000 nm), and functionalization methods for in vivo application are advantageous. Then, the key biomedical applications based on graphene materials are discussed, coupled with the current challenges and outlooks of this growing field. In a broader sense, this review provides a comprehensive discussion on the synthesis, characterization, functionalization, evaluation, and application of p‐G, GO, and rGO in the biomedical field, highlighting their recent advances and potential.

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“…Among them, its mechanical, electrical, and optical properties are considered very attractive for energy-generating devices, which makes graphene a very promising material for near-future energy technology [ 5 , 6 ]. Since its discovery in 2004 by André Geim and Kostya Novoselov at the University of Manchester, several fabrication techniques have been developed and well-established: mechanical exfoliation of highly organized graphite sheets [ 7 ], supersonic spray preparation [ 8 ], laser-assisted processes [ 9 ], or chemical vapor deposition (CVD) [ 10 ]. The main limitations and obstacles to integrating graphene in device technologies remain the following (i) the achievement of cost-effective high-quality crystalline graphene; (ii) compatibility of the parameters used during graphene transference; and (iii) scale-up to mass production for covering large areas.…”

Section: Introductionmentioning

confidence: 99%

Impact of Graphene Monolayer on the Performance of Non-Conventional Silicon Heterojunction Solar Cells with MoOx Hole-Selective Contact

et al. 2023

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In this work, a new design of transparent conductive electrode based on a graphene monolayer is evaluated. This hybrid electrode is incorporated into non-standard, high-efficiency crystalline silicon solar cells, where the conventional emitter is replaced by a MoOx selective contact. The device characterization reveals a clear electrical improvement when the graphene monolayer is placed as part of the electrode. The current–voltage characteristic of the solar cell with graphene shows an improved FF and Voc provided by the front electrode modification. Improved conductance values up to 5.5 mS are achieved for the graphene-based electrode, in comparison with 3 mS for bare ITO. In addition, the device efficiency improves by around 1.6% when graphene is incorporated on top. These results so far open the possibility of noticeably improving the contact technology of non-conventional photovoltaic technologies and further enhancing their performance.

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Laser Synthesized Graphene and Its Applications

Cited by 10 publications

References 90 publications

Advanced wearable biosensors for the detection of body fluids and exhaled breath by graphene

Advanced wearable biosensors for the detection of body fluids and exhaled breath by graphene

Synthesis and Functionalization of Graphene Materials for Biomedical Applications: Recent Advances, Challenges, and Perspectives

Impact of Graphene Monolayer on the Performance of Non-Conventional Silicon Heterojunction Solar Cells with MoOx Hole-Selective Contact

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