Highly conductive and transparent coatings from flow-aligned silver nanowires with large electrical and optical anisotropy

Xu, Yun; Ge, Dengteng; Calderon-Ortiz, Gabriel A; Exarhos, Annemarie L.; Bretz, Coline; Alsayed, Ahmed; Kurz, Dave; Kikkawa, J. M.; Dreyfus, Rémi; Yang, Shu; Yodh, Arjun G.

doi:10.1039/c9nr09598e

Cited by 19 publications

(15 citation statements)

References 46 publications

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“…In BCI brush painting, the Ag NW provides a conduction pathway due to the low resistivity of the Ag NW and percolating network structure. 23,[27][28][29][30][31] The PEDOT:PSS chains act as a conductive matrix connecting the Ag NW network, as shown in Fig. 1(b) of right inset picture.…”

Section: Resultsmentioning

confidence: 99%

Paintable and writable electrodes using black conductive ink on traditional Korean paper (Hanji)

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Paintable and writable electrodes using black conductive ink on traditional Korean paper (Hanji)

et al. 2020

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“…More specifically, it increases by slightly orienting the nanorods, but, when these are highly aligned, it shows a drastic decrease, especially at low anisotropies and volume fractions [ 35 ]. There are different options to align nanorods or similar one-dimensional NPs, such as nanowires and nanotubes [ 36 , 37 , 38 , 39 ], but none of them, for the time being, seem to exhibit a notably more accurate control on particle orientation than the others.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics of Janus Nanodimers Dispersed in Lamellar Phases of a Block Copolymer

Burgos-Mármol

Patti

2021

Polymers

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We investigate structural and dynamical properties of Janus nanodimers (NDs) dispersed in lamellar phases of a diblock copolymer. By performing molecular dynamics simulations, we show that an accurate tuning of the interactions between NDs and copolymer blocks can lead to a close control of NDs’ space distribution and orientation. In particular, NDs are preferentially found within the lamellae if enthalpy-driven forces offset their entropic counterpart. By contrast, when enthalpy-driven forces are not significant, the distribution of NDs, preferentially observed within the inter-lamellar spacing, is mostly driven by excluded-volume effects. Not only does the degree of affinity between host and guest species drive the NDs’ distribution in the polymer matrix, but it also determines their space orientation. In turn, these key structural properties influence the long-time dynamics and the ability of NDs to diffuse through the polymer matrix.

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“…This provides an effective way to enhance the performance of conductors, where the current only needs to flow in one direction . Various assembly strategies have been developed to align AgNWs, for example, microchannel alignment, shear and flow alignment, − and capillary-assisted alignment . However, these assembly strategies are more applicable in generating coatings and films, instead of patterning and on-demand printing processes.…”

Section: Introductionmentioning

confidence: 99%

Direct Embedment and Alignment of Silver Nanowires by Inkjet Printing for Stretchable Conductors

Al‐Milaji

Huang

et al. 2020

ACS Appl. Electron. Mater.

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Stretchable conductors have attracted tremendous attention owing to their potential applications as electrodes and sensing elements for wearable electronic devices. In this study, we have developed an inkjet printing process to directly embed and align silver nanowires in the polydimethylsiloxane elastomer for stretchable conductors. Instead of printing on top of elastomers, we printed the silver nanowires directly into an uncured liquid elastomer layer to embed the conductive nanowires, therefore eliminating the problems with surface wetting and delamination in conventional approaches, where the conductor is patterned on top of elastomers. This study investigated the process controls to tune the embedment depth and alignment of silver nanowires through inkjet printing. The printing process was captured with a high-speed camera to elucidate the mechanisms that direct the printed features. By controlling the thickness of the liquid elastomer layer and the post-printing treatment of printed lines, stretchable conductors composed of embedded silver nanowires have been fabricated in a single step. Because of the reflow of the viscous liquid elastomer, the printed silver nanowires are aligned along the printing direction, resulting in linewidth of tens of micrometers upon solvent removal. The stretchable conductors showed good mechanical and electrical stability under repeated bending and stretching/releasing cycles. This method of directly embedding silver nanowires into a liquid elastomer offers facile heterogeneous integration for digital patterning of stretchable electronics.

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Highly conductive and transparent coatings from flow-aligned silver nanowires with large electrical and optical anisotropy

Abstract: A robust flow alignment technique generates conductive and transparent silver nanowire coatings with tunable alignment and anisotropy.

Cited by 19 publications

References 46 publications

Paintable and writable electrodes using black conductive ink on traditional Korean paper (Hanji)

Paintable and writable electrodes using black conductive ink on traditional Korean paper (Hanji)

Molecular Dynamics of Janus Nanodimers Dispersed in Lamellar Phases of a Block Copolymer

Direct Embedment and Alignment of Silver Nanowires by Inkjet Printing for Stretchable Conductors

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