Direct patterning of nitrogen-doped chemical vapor deposited graphene-based microstructures for charge carrier measurements employing femtosecond laser ablation

Kovalchuk, N. G.; Niherysh, Kiryl; Felsharuk, Andrei; Свито, И. А.; Tamulevičius, Tomas; Tamulevičius, Sigitas; Каргин, Н. И.; Komissarov, I.; Prischepa, S. L.

doi:10.1088/1361-6463/ab1c4b

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…An important distinguishing feature of the sputtering process was that samples of different thicknesses were deposited in the same deposition run, which made it possible to assign all differences between films only to the effect of thickness and to exclude variations in technological parameters from sample to sample. Graphene was grown by atmospheric pressure chemical vapor deposition (APCVD) and afterwards transferred on superconducting films by a wet room temperature process [432][433][434]. Note that the graphene deposition process was ex situ.…”

Section: Superconductor Film-graphene Sheet Hybridsmentioning

confidence: 99%

Phonon softening in nanostructured phonon–mediated superconductors (review)

Prischepa

Kushnir

2023

J. Phys.: Condens. Matter

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Various aspects of phonon spectrum changes in nanostructured phonon-mediated superconductors are considered. It is shown how, with the development of experimental techniques and, accordingly, obtaining new results, the understanding of the influence of the surface and nanoscale on the magnitude of the electron-phonon interaction and the critical temperature Tc changed and deepened. The review is organized as follows. After the Introduction, in the first part we give the quick theoretical background for the description of superconductivity within the framework of various formalisms. In the second part we describe the properties of granular thin films paying attention to the impact of grain sizes and methods of deposition on the Tc value. The role of material parameters is underlined and different aspects of the behavior of granular thin films are discussed. In the third section the impact of external sources of modification of the phonon spectra like noble gases and organic molecules are considered. Problems and progress in this area are discussed. The fourth part is dedicated to the phonon modification and related quantum size effects in nanostructured superconductors. In the fifth part we review the results of direct evidence of phonon softening in nanostructured superconductors and in the sixth section we discuss a possible alternative description of the superconducting properties of nanostructured superconductors related to the concept of metamaterials. In the seventh and eighth parts we review the impact of substrates with lattice mismatched parameters and graphene sheets, respectively, on the modification of the phonon spectrum and enhancement of superconductivity in various superconducting thin films. Finally, in the last ninth section we consider the nonequilibrium superconductivity driven by femtosecond pulses of light, which leads to generation of coherent phonons and to a significant increase in the critical temperature in a number of superconducting materials.

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Section: Superconductor Film-graphene Sheet Hybridsmentioning

confidence: 99%

Phonon softening in nanostructured phonon–mediated superconductors (review)

Prischepa

Kushnir

2023

J. Phys.: Condens. Matter

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“…Besides heating, the extreme thermodynamic conditions driven by intense laser radiation can provoke ablation processes in carbon materials [174][175][176][177]. Selective ablation provides a powerful tool for high-resolution (sub-micron scale) subtractive patterning of graphenebased layers in a rapid and versatile way [178][179][180][181][182][183][184]. Graphene-based films, even with micrometric thicknesses, can be laser-patterned for the fabrication of electrode structures that can be used in a wide variety of apparatus, such as microheaters, thermal sensors, and thermostatic devices [185].…”

Section: Treatments Based On Laser Ablationmentioning

confidence: 99%

Laser processing of graphene and related materials for energy storage: State of the art and future prospects

Kumar

Pino

Sahoo³

et al. 2022

Progress in Energy and Combustion Science

163

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“…For example, the femtosecond-laser irradiation of graphene films immersed in distilled water was used to prepare graphene microflower surfaces with special nanostructured edges [35]. N-doped graphene was selectively patterned for ablation to obtain topologies for charge carrier measurements [36]. However, the laser in this part of the study only served as an auxiliary processing tool following the graphene production.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Micron-Structured Heatable Graphene Hydrophobic Surfaces for Deicing and Anti-Icing by Laser Direct Writing

Li,

Zhong,

Zou

et al. 2023

Coatings

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As a novel method to prepare graphene, the laser-induced graphene (LIG) technology has numerous outstanding properties and has been widely applied in various fields. Nevertheless, the challenge remains to easily and efficiently prepare multifunctional surfaces of graphene through laser microregulation and fine structure design. Here, we successfully fabricated a micron-structure gully graphene surface with hydrophobicity and electrothermal functionality under atmospheric conditions using a 10.6 μm CO2 laser to directly write on the surface of a polyimide film (PI). The impact of the laser scanning speed on the surface morphology and chemical composition of the product was investigated by analyzing the SEM (scanning electron microscope) observations and Raman spectra, respectively. The mechanical stability of the surface was studied by analyzing the contact angle of water droplets on the surface after mechanical circulation and the delayed icing effect after repeated icing. The deicing and anti-icing performance of the surface were analyzed based on its resistance to surface icing and electric deicing time. According to the experimental results, we first observed a linear negative correlation between the generated structure linewidth and the laser scanning speed. Additionally, we successfully achieved one-step preparation of primitive continuous graphene structures with a superhydrophobic capability (151°). Furthermore, our findings indicate that micron-structured graphene surfaces exhibit excellent mechanical stability, effectively delay icing formation, and demonstrate efficient electric deicing effects. These results demonstrate the potential application of CO2 laser-induced graphene technology in the field of surface preparation for deicing and anti-icing. This work offers a novel one-step approach for the fabrication of micron-structured heatable graphene surfaces with simultaneous superhydrophobicity, deicing, and anti-icing functionalities on polymer substrates.

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Direct patterning of nitrogen-doped chemical vapor deposited graphene-based microstructures for charge carrier measurements employing femtosecond laser ablation

Cited by 6 publications

References 37 publications

Phonon softening in nanostructured phonon–mediated superconductors (review)

Phonon softening in nanostructured phonon–mediated superconductors (review)

Laser processing of graphene and related materials for energy storage: State of the art and future prospects

Fabrication of Micron-Structured Heatable Graphene Hydrophobic Surfaces for Deicing and Anti-Icing by Laser Direct Writing

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