Direct Synthesis of Multiplexed Metal‐Nanowire‐Based Devices by Using Carbon Nanotubes as Vector Templates

Abstract

We present the synthesis of metal nanowires in a multiplexed device configuration using single‐walled carbon nanotubes (SWNTs) as nanoscale vector templates. The SWNT templates control the dimensionality of the wires, allowing precise control of their size, shape, and orientation; moreover, a solution‐processable approach enables their linear deposition between specific electrode pairs in electronic devices. Electrical characterization demonstrated the successful fabrication of metal nanowire electronic devices, while multiscale characterization of the different fabrication steps revealed details of the structure and charge transfer between the material encapsulated and the carbon nanotube. Overall the strategy presented allows facile, low‐cost, and direct synthesis of multiplexed metal nanowire devices for nanoelectronic applications.

Solid-State Reaction Synthesis of Nanoscale Materials: Strategies and Applications

“…Due to the limitations in accessing different compositions and dimensions by growing 1D NMs using the classical synthetic methods, new synthetic routes based on DSC-SSRs have been attempted. In this regard, a variety of 1D nanospaces inside presynthesized, tubular NMs can be highly advantageous to predetermine the morphology and aspect ratio of templated 1D NMs. , In addition, by adopting the SSR conversion strategy, presynthesized 1D NMs can be subjected to SSRs after coating with a protective layer of a confiner, which would result in a variety of new 1D-NM compositions and morphologies. , …”

“…In this regard, a variety of 1D nanospaces inside presynthesized, tubular NMs can be highly advantageous to predetermine the morphology and aspect ratio of templated 1D NMs. 752,753 In addition, by adopting the SSR conversion strategy, presynthesized 1D NMs can be subjected to SSRs after coating with a protective layer of a confiner, which would result in a variety of new 1D-NM compositions and morphologies. 754,755 3.2.3.1.…”

Engineering of Microcage Carbon Nanotube Architectures with Decoupled Multimodal Porosity and Amplified Catalytic Performance

“…XANES confirms, on a bulk scale, the presence of metallic Cu 0 NPs in the decorated aerogels, as indicated by the characteristic Cu K‐edge position (8979 eV) and post‐edge features of the Cu@DWCNT aerogel spectrum (Figure 2B). [ 56 ] In addition, XANES also confirms the absence of Cu II precursor species (as evidenced by the absence of the Cu II characteristic pre‐edge peak at 8978 eV stemming from the Cu(acac) 2 ), [ 57 ] indicating that the decorated aerogels are free of any unconverted precursor and highlighting the efficacy of the thermal‐shock‐decomposition process in generating Cu–CuO NPs. The post K‐edge features (the extended fine structure) appear slightly shifted (Figure 2B, position b and c) for the aerogel‐supported Cu–CuO when compared to an unsupported Cu 0 reference sample.…”

Tuning Structure and Properties of Pt Catalysts Confined in Single‐Walled Carbon Nanotubes (SWNTs) for Electrocatalysis

“…Confinement effect has been reported to enhance the activity of nanocatalysts by increasing the number or activity of catalytic sites. [10][11][12][13] 1D Carbon nanotubes can function as confinement vector or nanoreactor due to their excellent electrical properties and suitable narrow channel spaces, [14][15][16][17][18][19][20][21] and the space-confined effect on improving catalysis performance of metal catalyst within carbon nanotubes has been observed for electrocatalysis and chemical catalysis. [22][23][24][25][26] Recently, SWNT-confined Pt catalyst exhibited higher catalytic activity than the conventional Pt catalysts supported on SWNTs for amperometric hydrogen sensing.…”