Nitrogen-incorporated ultrananocrystalline diamond and multi-layer-graphene-like hybrid carbon films

Tzeng, Yonhua; Yeh, Shoupu; Fang, Wei; Chu, Yuehchieh

doi:10.1038/srep04531

Cited by 32 publications

(23 citation statements)

References 37 publications

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“…The rheological behavior of these hybrids was explored with extensive machine learning methods. Interestingly, N-doped UNCD/MLGN hybrid films were employed in the construction of biocompatible carbon-based heaters for possible electrosurgical applications [164].…”

Section: Materials' Processing Technologiesmentioning

confidence: 99%

Mixed sp2–sp3 Nanocarbon Materials: A Status Quo Review

Vejpravová

2021

Nanomaterials

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Carbon nanomaterials with a different character of the chemical bond—graphene (sp2) and nanodiamond (sp3)—are the building bricks for a new class of all-carbon hybrid nanomaterials, where the two different carbon networks with sp3 and sp2 hybridization coexist, interacting and even transforming into one another. The extraordinary physiochemical properties defined by the unique electronic band structure of the two border nanoallotropes ensure the immense application potential and versatility of these all-carbon nanomaterials. The review summarizes the status quo of sp2 – sp3 nanomaterials, including graphene/graphene-oxide—nanodiamond composites and hybrids, graphene/graphene-oxide—diamond heterojunctions, and other sp2–sp3 nanocarbon hybrids for sensing, electronic, and other emergent applications. Novel sp2–sp3 transitional nanocarbon phases and architectures are also discussed. Furthermore, the two-way sp2 (graphene) to sp3 (diamond surface and nanodiamond) transformations at the nanoscale, essential for innovative fabrication, and stability and chemical reactivity assessment are discussed based on extensive theoretical, computational and experimental studies.

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Section: Materials' Processing Technologiesmentioning

confidence: 99%

Mixed sp2–sp3 Nanocarbon Materials: A Status Quo Review

Vejpravová

2021

Nanomaterials

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“…Presence of graphitic phases at the interfaces of ZnO nanorods/UNCD needles decreases the resistivity of layer and core‐shell heterostructures, thus, delivered superior EFE . Nitrogen‐incorporated UNCD grains serve as “high‐density diamond nuclei” in the hybrid carbon film . In all those studies and many others, factors related to performance of UNCD/NCD films are linked with the tiny grains of UNCD/NCD films.…”

Section: Introductionmentioning

confidence: 99%

“…Nitrogen-incorporated UNCD grains serve as 'high-density diamond nuclei' in the hybrid carbon film [32]. In all those studies and many others, factors related to performance of UNCD/NCD films are linked with the tiny grains of UNCD/NCD films.…”

Section: Introductionmentioning

confidence: 99%

Phase transitions and critical phenomena of tiny grains carbon films synthesized in microwave‐based vapor deposition system

Ali

Lin

2018

Surface & Interface Analysis

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Different peak trends of tiny grains carbon film have been observed under the investigations of the Raman spectroscopy and energy loss spectroscopy. Carbon films known in nanocrystalline and ultrananocrystalline diamond films are synthesized by employing microwave-based vapor deposition system. Carbon atoms exhibit several state behaviors depending on the incurred positions of their electrons. Different morphology of tiny grains under different chamber pressure is related to different rate of arriving typical energies at/near substrate surface. Those tiny grains of carbon film, which evolved in graphitic state atoms are converted to structure of smooth elements where elongation of atoms of one-dimensional arrays is as per exerting surface format forces along opposite poles from their centers. Such tiny grains in the film are the cause of v 1 peak under the investigation of the Raman spectrum because of the enhanced propagation of input laser signals through channelized inter-state electron gaps of elongated graphitic state atoms. Those tiny grains of carbon film, which evolved in fullerene state are the cause of v 2 peak. The tiny grains related to v 1 peak possess a low intensity as compared with the ones which comprised atoms having state behaviors known in their exceptional hardness. Tiny grains representing v 1 peakin the Raman spectrum are also the cause of field emission characteristic of a carbon film. Different peak recordings were made for the Raman at defined positions indicating a different state of carbon atoms for a different phase of deposited tiny grains, which is in line to their energy loss spectroscopy.

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“…In previous reports two-dimensional structure in BNCD films has been found from 2D weak localization transport. 2,10 Although further investigation into the nature of the grain boundary will most definitely be required to verify the 2D conduction channels claimed here, there is a growing amount of both experimental evidence and theoretical analysis that suggest the nano-diamond crystal grains are separated by a sp 2 hybridised carbon phase similar to disordered graphene [14][15][16] highlighting the possibility of Dirac fermion or chiral superconductivity in this system. The effect of structurally arranged boron in these graphitic boundaries has recently been researched with respect to inducing interfacial superconductivity.…”

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confidence: 99%

Possible observation of the Berezinskii-Kosterlitz-Thouless transition in boron-doped diamond films

Coleman

Bhattacharyya

2017

AIP Advances

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The occurrence of the Berezinskii-Kosterlitz-Thouless (BKT) transition is investigated in heavily boron-doped nanocrystalline diamond films through a combination of current-voltage and resistance measurements. We observe transport features suggesting a robust BKT transition along with transport features related to vortex pinning in nanocrystalline diamond films with smaller grain size. The vortex core energy determined through analysis of the resistance temperature curves was found to be anti-correlated to the BKT transition temperatures. It is also observed that the higher BKT temperature is related to an increased vortex-antivortex binding energy derived from the activated transport regions. Further, the magnetic field induced superconductor insulator transition shows the possibility of the charge glass state. The consequences of granularity such as localization and vortex pinning can lead to tuneable BKT temperatures and strongly affects the field induced insulating state.

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Nitrogen-incorporated ultrananocrystalline diamond and multi-layer-graphene-like hybrid carbon films

Cited by 32 publications

References 37 publications

Mixed sp2–sp3 Nanocarbon Materials: A Status Quo Review

Mixed sp2–sp3 Nanocarbon Materials: A Status Quo Review

Phase transitions and critical phenomena of tiny grains carbon films synthesized in microwave‐based vapor deposition system

Possible observation of the Berezinskii-Kosterlitz-Thouless transition in boron-doped diamond films

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