Chemical and topographical patterns combined with solution shear for selective-area deposition of highly-aligned semiconducting carbon nanotubes

Abstract

Selective deposition of semiconducting carbon nanotubes (s-CNTs) into densely packed, aligned arrays of individualized s-CNTs is necessary to realize their potential in semiconductor electronics. We report the combination of chemical...

Controlled Preparation of Single-Walled Carbon Nanotubes as Materials for Electronics

“…Langmuir–Blodgett (LB), 142 Langmuir–Schaefer (LS), 143 evaporation-induced self-assembly (EISA), 23 floating evaporative self-assembly (FESA), 144 tangential flow interfacial self-assembly (TaFISA), 145 dimension-limited self-alignment (DLSA), 32 and binary liquid interface-confined self-assembly (BLIS) 34 utilize interfaces and contact lines to facilitate co-orientation. Spatially hindered integration based on a DNA template (SHIDT) 48 and Shear on Patterns 146 design the interactions between SWCNTs and patterned substrates. The arrays prepared by these methods present densities of 25–500 μm –1 and the two-dimensional order parameter 147 , 148 S 2D > 0.75.…”

A simple simulation-derived descriptor for the deposition of polymer-wrapped carbon nanotubes on functionalized substrates

“…8 Because of their flexiblity with respect to substrate options, solution deposition methods coupled with various other methods have been used to achieve s-CNT alignment on substrates. [9][10][11][12][13][14][15][16][17][18] Functionalizing the s-CNT or the substrates enables control of the spatial localization of s-CNT deposition, largely via covalent bonding. [19][20][21] Large biomolecules such as DNA have also been used to select different species of CNTs 22 and place CNTs at specific positions and specific orientations.…”