Areal Density Control of Liquid-Supported Carbon Nanotube Thin Films

Abstract

Carbon nanotube (CNT) films have extensive applications due to their excellent electrical, mechanical, and thermal properties. A grand challenge is controlling areal density of CNT films to accommodate various applications. Here, a method based on the Marangoni effect is used to fabricate liquid-supported CNT films with tunable areal density, scalable area, and transferability to arbitrary substrates. By adjusting the viscosity and surface tension of the base liquid media, the Marangoni flow area of surfactant-assisted single-walled CNT (SWCNT) dispersion on the surface of base media was controllable and sparse or dense SWCNT films can be easily obtained. The thickness of the films is controlled by changing the concentration of the SWCNT dispersion. These SWCNTbased transparent-conductive films have widely controllable transmittance and conductivity and exhibit great photoelectric properties (T ∼ 82.4%, R s ∼ 407 Ω/sq).

Multiple graphdiyne‐like chains self‐assemble into carbon nanotubes

“…In Equation (), E Interaction is the interaction energy of the graphdiyne‐like chains/CNT system, E total is the total energy of the composite, E graphdiyne‐like chain is the energy of individual graphdiyne‐like chain molecules, and E CNT is the energy of individual CNT 24,31 . The interaction energy for the graphdiyne‐like chains/CNT system with simulation time is displayed in Figure 3C.…”

“…In Equation ( 1), E Interaction is the interaction energy of the graphdiyne-like chains/CNT system, E total is the total energy of the composite, E graphdiyne-like chain is the energy of individual graphdiyne-like chain molecules, and E CNT is the energy of individual CNT. 24,31 The interaction energy for the graphdiyne-like chains/CNT system with simulation time is displayed in This corresponds to the non-bonded internuclear separation of carbon atoms, which means that the main interaction is vdW type. As we know, in the structure of CNT and graphdiyne-like chain, it ends with a C atom.…”

“…As one-dimensional nanomaterials, CNT 30 have many unusual mechanical, electrical, and chemical properties due to their lightweight and perfect hexagonal structural joint. 31 In recent years, with the deepening of research on CNT and nanomaterials, their broad application prospects have also been continuously demonstrated. 32,33 However, as two new types of carbon materials, graphdiyne and CNT have not yet been reported in literature for their advantages when combined.…”