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studied the TE performance of ultralong DWCNT bundles , which were separated from purified DWCNT films.
Cho et al., using a layer-by-layer (LBL) assembly technique, fabricated a stable n-type TE multilayer thin film by alternately depositing DWCNT and graphene, which were stabilized by PEI and polyvinylpyrrolidone (PVP), respectively .
Torsional buckling of a DWCNT embedded on Winkler and Pasternak foundations using nonlocal theory.
Ning and his team  reported formation of a uniform MgFe2O4/MgO solid solution structure as a result of calcination at 1173 K for 12 h and concluded that the reduced structure facilitated several active sites, having a diameter around 4 nm, which helped in generating SWCNTs and DWCNTs. Hydrothermal treatment was applied to produce porous and lamella-like Fe catalysts supported over MgO which became a simple approach for high yield of DWCNTs .
According to investigations using SEM, MWCNTs are more homogeneously distributed on the BNC surface (Figures 3(d) and 4(a)) compared to DWCNT (Figures 3(c) and 4(b)), which is consistent with results of a visual check of samples (the surface of BNC films modified with MWCNT is uniformly black, whereas the surface of BNC pellicles modified with DWCNT contains colourless parts, Figure 1).
To observe the effect of strain on the BNC samples, a tensile force of 4 N has been applied on both DWCNT treated BNC sample and MWCNT treated BNC samples for three hours.
 investigated the lip-lip interactions in the growth of DWCNTs. Furthermore, Jin et al.
Furthermore, Figures 1(b) and 1(c) show the structural derivative processes of the finite MWCNTs (including finite DWCNTs [8, k]@[ 16, k + 2] and TWCNTs [8, k]@[ 16, k + 2] @ [24, k + 4]) and the corresponding unit cells of the infinite MWCNTs.
Kataura, "Interaction between concentric tubes in DWCNTs," European Physical Journal B, vol.
It is clear that the graphene-DWCNT hybrid films show a better performance than pure DWCNT films.
At the same time, hybrid films show better current stability and luminance uniformity than those of the pure DWCNT films prepared by the same method.
In this paper the free vibration frequencies of coaxial DWCNTs are detected, using two different approaches.
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