Linear carbon chains inside multi-walled carbon nanotubes: Growth mechanism, thermal stability and electrical properties

Kang, Cheon Soo; Fujisawa, Kazunori; Ko, Yong-Il; Muramatsu, Hiroyuki; Hayashi, T.; Endo, Morinobu; Kim, Hee Jou; Lim, Daun; Kim, Jin Hee; Jung, Yong Chae; Terrones, Mauricio; Dresselhaus, M. S.; Kim, Yoong Ahm

doi:10.1016/j.carbon.2016.05.069

Cited by 37 publications

(19 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Synthesis of novel 2D materials with semiconducting character, made mainly from carbon atoms have been among the most interesting research topics in the field of novel materials [25,26,27,28,29,30,31]. New forms of carbon allotropes with sp or sp-sp 2 hybrid structures have already been investigated.…”

Section: Introductionmentioning

confidence: 99%

Electronic, optical and thermal properties of highly stretchable 2D carbon Ene-yne graphyne

Mortazavi

Shahrokhi

Rabczuk

et al. 2017

Carbon

View full text Add to dashboard Cite

Recently, a new carbon-based two-dimensional (2D) material, so called carbon Ene-yne (CEY), was successfully synthesized. In this work, we examine electronic, optical and thermal properties of this novel material. We studied the stretchability of CEY via density functional theory (DFT) calculations. Using the PBE and HSE06 functionals, as well as the G 0 W 0 method and the Bethe-Salpeter equation, we systematically explored electronic and optical properties of 2D CEY. In particular, we investigated the change of band-gap and optical properties under uniaxial and biaxial strain. Ab-initio molecular dynamics simulations confirm that CEY is stable at temperatures as high as 1500 K. Using non-equilibrium molecular dynamics simulations, the thermal conductivity of CEY was predicted to be anisotropic and three orders of magnitude smaller than that of graphene. We found that in the visible range, the optical conductivity under high strain levels is larger than that of graphene. This enhancement in optical conductivity may allow CEY to be used in photovoltaic cells. Moreover, CEY shows anisotropic optical responses for x-and y-polarized light, which may be suitable as an optical linear polarizer. The comprehensive insight provided by the present investigation should serve as a guide for possible applications of CEY in nanodevices.

show abstract

Section: Introductionmentioning

confidence: 99%

Electronic, optical and thermal properties of highly stretchable 2D carbon Ene-yne graphyne

Mortazavi

Shahrokhi

Rabczuk

et al. 2017

Carbon

View full text Add to dashboard Cite

show abstract

“…The LCC@MWCNT were synthesized using the arc discharge method described in a previous work [38]. Isolated LCCs@MWCNT (Fig.…”

mentioning

confidence: 99%

“…The solution was then drop casted onto a silicon substrate equipped with horseshoe probes (70 μm diameter) [39]. Resonance Raman spectra (RRS) were acquired in a backscattering geometry using a 532 nm (2.33 eV) laser, a constant power density of 0.25 mW=μm 2 and a 50× objective (the LCCs' energy gaps are around 2.13 eV [36,38,40]). A membrane anvil diamond cell was used to apply the pressure loads [28,36,41].…”

mentioning

confidence: 99%

Anharmonicity and Universal Response of Linear Carbon Chain Mechanical Properties under Hydrostatic Pressure

et al. 2020

Self Cite

View full text Add to dashboard Cite

Isolated linear carbon chains (LCCs) encapsulated by multiwalled carbon nanotubes are studied under hydrostatic pressure (P) via resonance Raman scattering. The LCCs' spectroscopic signature C band around 1850 cm −1 softens linearly with increasing P. A simple anharmonic force-constant model not only describes such softening but also shows that the LCCs' Young's modulus (E), Grüneisen parameter (γ), and strain (ε) follow universal P −1 and P 2 laws, respectively. In particular, γ also presents a unified behavior for all LCCs. To the best of our knowledge, these are the first results reported on such isolated systems and the first work to explore universal P-dependent responses for LCCs' E, ε, and γ.

show abstract

“…On the other hand, the CNT is also one of the most promising nanomaterials for assembling nanocomposite structures, such as fluid-filled CNTs [23,24], metal nanowire-filled SWCNTs [25,26], carbon-atom chain-filled SWCNTs (CCSCs) [27,28,29], and C 60 chain-filled SWCNTs [30]. It is well-known that the van der Waals (vdW) interactions between the filled mass chain and the CNT play an important role in the dynamics behavior of the CNT composite structures.…”

Section: Introductionmentioning

confidence: 99%

Flexural Wave Propagation in Mass Chain-Filled Carbon Nanotubes

2019

View full text Add to dashboard Cite

The propagation characteristics of terahertz (THz) flexural waves in mass chain-filled single-walled carbon nanotubes (MCSCs) are studied using a continuum mechanics approach and molecular dynamics (MD) simulations, where each single-walled carbon nanotube (SWCNT) is modeled as a nonlocal Timoshenko beam based on the nonlocal strain gradient theory. The effect of the surrounding elastic medium and the van der Waals (vdW) interactions between the mass chain and the SWCNT on the wave propagation is quantitatively considered in governing equations, respectively. The analytical expressions of two flexural wave branches and the bandgap between the two branches are derived. When combining our MD simulations of the carbon-atom chain-filled SWCNT, the wave within the bandgap disperses rapidly, and the mass chain has a significant influence on the phase velocity of the flexural wave. The present theoretical solution has a high accuracy in a wide frequency range up to the THz region. In particular, the surrounding elastic medium of the MCSCs remarkably affects the phase velocity for low frequencies, but not for high frequencies. The present study indicates that the wave propagation of a SWCNT could be modulated by changing the filled mass chain and the surrounding elastic medium.

show abstract

Linear carbon chains inside multi-walled carbon nanotubes: Growth mechanism, thermal stability and electrical properties

Cited by 37 publications

References 43 publications

Electronic, optical and thermal properties of highly stretchable 2D carbon Ene-yne graphyne

Electronic, optical and thermal properties of highly stretchable 2D carbon Ene-yne graphyne

Anharmonicity and Universal Response of Linear Carbon Chain Mechanical Properties under Hydrostatic Pressure

Flexural Wave Propagation in Mass Chain-Filled Carbon Nanotubes

Contact Info

Product

Resources

About