Highly aligned carbon nanotube forests coated by superconducting NbC

Zou, Guifu; Luo, Hongmei; Baily, S. A.; Zhang, Mingchao; Haberkorn, N.; Xiong, Jie; Bauer, Elizabeth; McCleskey, T. Mark; Burrell, Anthony K.; Civale, L.; Zhu, Yuntian; MacManus‐Driscoll, Judith L.; Jia, Q. X.

doi:10.1038/ncomms1438

Cited by 31 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[16,21,22] In figure 4A, fitting the relative Raman intensities versus the polarized angles, [21,38] the alignment degree for SWfilm is calculated to be 0.46, while for EDD-film and ADD-film the degrees are 0.62 and 0.59, respectively. [39][40][41][42] According to the azimuth-scan at the close-packing peak, the full width at half maximum (FWHM) is calculated shown in figure 4C. [39][40][41][42] According to the azimuth-scan at the close-packing peak, the full width at half maximum (FWHM) is calculated shown in figure 4C.…”

Section: Articlementioning

confidence: 99%

Tuning carbon nanotube assembly for flexible, strong and conductive films

Wang

et al. 2015

Nanoscale

View full text Add to dashboard Cite

Carbon nanotubes are ideal scaffolds for designing and architecting flexible graphite films with tunable mechanical, electrical and thermal properties. Herein, we demonstrate that the assembly of aligned carbon nanotubes with different aggregation density and morphology leads to different mechanical properties and anisotropic electrical conduction along the films. Using drying evaporation under tension treatment, the carbon nanotubes can be assembled into strong films with tensile strength and Young's modulus as high as 3.2 GPa and 124 GPa, respectively, leading to a remarkable toughness of 54.38 J g(-1), greatly outperforming conventional graphite films, spider webs and even Kevlar fiber films. Different types of solvents may result in the assembly of CNTs with different aggregation morphology and therefore different modulus. In addition, we reveal that the high density assembly of aligned CNTs correlates with better electric conduction along the axial direction, enabling these flexible graphite films to be both strong and conductive.

show abstract

Section: Articlementioning

confidence: 99%

Tuning carbon nanotube assembly for flexible, strong and conductive films

Wang

et al. 2015

Nanoscale

View full text Add to dashboard Cite

show abstract

“…Graphene and CNTs share many fascinating characteristics, such as ultrahigh charge carrier mobility, gigantic thermal conductivity, extremely large surface area, exceptional mechanical strength, and flexibility, arising from the purely sp 2 hybrid carbon structures with abundant delocalized π‐electrons . These exclusive properties, along with their atomic scale dimension, have caused rapid advance of various relevant applications, extending from flexible electronics, nanoelectronics, energy conversion/storage, catalysis, to nanocomposites …”

Section: Introductionmentioning

confidence: 99%

25th Anniversary Article: Chemically Modified/Doped Carbon Nanotubes & Graphene for Optimized Nanostructures & Nanodevices

et al. 2013

View full text Add to dashboard Cite

Outstanding pristine properties of carbon nanotubes and graphene have limited the scope for real-life applications without precise controllability of the material structures and properties. This invited article to celebrate the 25th anniversary of Advanced Materials reviews the current research status in the chemical modification/doping of carbon nanotubes and graphene and their relevant applications with optimized structures and properties. A broad aspect of specific correlations between chemical modification/doping schemes of the graphitic carbons with their novel tunable material properties is summarized. An overview of the practical benefits from chemical modification/doping, including the controllability of electronic energy level, charge carrier density, surface energy and surface reactivity for diverse advanced applications is presented, namely flexible electronics/optoelectronics, energy conversion/storage, nanocomposites, and environmental remediation, with a particular emphasis on their optimized interfacial structures and properties. Future research direction is also proposed to surpass existing technological bottlenecks and realize idealized graphitic carbon applications.

show abstract

“…In this short communication, we focus on an inter-metallic superconducting compound i.e., NbC, on which there are only few scant reports [5][6][7][8][9] in literature. Our interest on this compound is two fold, first though it was discovered long back in 1964 itself [5], the same is yet least studied superconductor.…”

Section: Introductionmentioning

confidence: 99%

Vacuum Encapsulated Synthesis of 11.5 K NbC Superconductor

Jha

Awana

2012

J Supercond Nov Magn

View full text Add to dashboard Cite

Bulk polycrystalline NbC samples are synthesized through solid state reaction route in an evacuated sealed quartz tube. Studied NbC samples are crystallized in NaCl-type cubic structure with space group Fm-3m. To control cell parameters and minute unreacted phases, different samples are synthesized with various heat treatments. Finally, phase pure NbC is achieved. The grain size of the as systemized material being seen from SEM (scanning electron microscopy) is nonuniform of around 3-10 μm size. Crystal structure and lattice parameters of samples have been calculated by Rietveld analysis of room temperature X-ray powder diffraction data. The lattice parameter increases with synthesis temperature and scales with superconducting transition temperature (T c ). Both AC and DC magnetization exhibited highest T c at around 11.5 K for an NbC sample with lattice parameter a = 4.471 Å. The lower critical field (H c1 ) and irreversibility field (H irr ) measured at 3 K are around 250 Oe and 4.5 kOe, respectively. The upper critical field (H c2 ) being determined from in-field AC susceptibility measurements is 7.8 kOe and 11.7 kOe with 50 % and 90 % diamagnetism criteria, respectively.

show abstract

Highly aligned carbon nanotube forests coated by superconducting NbC

Cited by 31 publications

References 19 publications

Tuning carbon nanotube assembly for flexible, strong and conductive films

Tuning carbon nanotube assembly for flexible, strong and conductive films

25th Anniversary Article: Chemically Modified/Doped Carbon Nanotubes & Graphene for Optimized Nanostructures & Nanodevices

Vacuum Encapsulated Synthesis of 11.5 K NbC Superconductor

Contact Info

Product

Resources

About