Thermophoretic transport of ionic liquid droplets in carbon nanotubes

Rakesh Rajegowda; Sridhar Kumar Kannam; Remco Hartkamp; Sarith P. Sathian

doi:10.1088/1361-6528/aa6290

Thermophoretic transport of ionic liquid droplets in carbon nanotubes

Rakesh Rajegowda, Sridhar Kumar Kannam, Remco Hartkamp, Sarith P. Sathian^*

^*Corresponding author for this work

Process and Energy

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Abstract

Thermal-gradient induced transport of ionic liquid (IL) and water droplets through a carbon nanotube (CNT) is investigated in this study using molecular dynamics simulations. Energetic analysis indicates that IL transport through a CNT is driven primarily by the fluid-solid interaction, while fluid-fluid interactions dominate in water-CNT systems. Droplet diffusion analysis via the moment scaling spectrum reveals sub-diffusive motion of the IL droplet, in contrast to the self-diffusive motion of the water droplet. The Soret coefficient and energetic analysis of the systems suggest that the CNT shows more affinity for interaction with IL than with the water droplet. Thermophoretic transport of IL is shown to be feasible, which can create new opportunities in nanofluidic applications.

Original language	English
Article number	155401
Number of pages	9
Journal	Nanotechnology
Volume	28
Issue number	15
DOIs	https://doi.org/10.1088/1361-6528/aa6290
Publication status	Published - 2017

Bibliographical note

Accepted Author Manuscript

Keywords

carbon nanotubes
ionic liquid droplets
nanoscale transport
thermal gradients
thermophoresis

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title = "Thermophoretic transport of ionic liquid droplets in carbon nanotubes",

abstract = "Thermal-gradient induced transport of ionic liquid (IL) and water droplets through a carbon nanotube (CNT) is investigated in this study using molecular dynamics simulations. Energetic analysis indicates that IL transport through a CNT is driven primarily by the fluid-solid interaction, while fluid-fluid interactions dominate in water-CNT systems. Droplet diffusion analysis via the moment scaling spectrum reveals sub-diffusive motion of the IL droplet, in contrast to the self-diffusive motion of the water droplet. The Soret coefficient and energetic analysis of the systems suggest that the CNT shows more affinity for interaction with IL than with the water droplet. Thermophoretic transport of IL is shown to be feasible, which can create new opportunities in nanofluidic applications.",

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AU - Rajegowda, Rakesh

AU - Kannam, Sridhar Kumar

AU - Hartkamp, Remco

AU - Sathian, Sarith P.

N1 - Accepted Author Manuscript

PY - 2017

Y1 - 2017

N2 - Thermal-gradient induced transport of ionic liquid (IL) and water droplets through a carbon nanotube (CNT) is investigated in this study using molecular dynamics simulations. Energetic analysis indicates that IL transport through a CNT is driven primarily by the fluid-solid interaction, while fluid-fluid interactions dominate in water-CNT systems. Droplet diffusion analysis via the moment scaling spectrum reveals sub-diffusive motion of the IL droplet, in contrast to the self-diffusive motion of the water droplet. The Soret coefficient and energetic analysis of the systems suggest that the CNT shows more affinity for interaction with IL than with the water droplet. Thermophoretic transport of IL is shown to be feasible, which can create new opportunities in nanofluidic applications.

AB - Thermal-gradient induced transport of ionic liquid (IL) and water droplets through a carbon nanotube (CNT) is investigated in this study using molecular dynamics simulations. Energetic analysis indicates that IL transport through a CNT is driven primarily by the fluid-solid interaction, while fluid-fluid interactions dominate in water-CNT systems. Droplet diffusion analysis via the moment scaling spectrum reveals sub-diffusive motion of the IL droplet, in contrast to the self-diffusive motion of the water droplet. The Soret coefficient and energetic analysis of the systems suggest that the CNT shows more affinity for interaction with IL than with the water droplet. Thermophoretic transport of IL is shown to be feasible, which can create new opportunities in nanofluidic applications.

KW - carbon nanotubes

KW - ionic liquid droplets

KW - nanoscale transport

KW - thermal gradients

KW - thermophoresis

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JO - Nanotechnology

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Thermophoretic transport of ionic liquid droplets in carbon nanotubes

Abstract

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