Selective water transport across uniform sub-nanometer pores in microfabricated membranes

T. Humplik; R. Raj; S. C. Maroo; T. Laoui; E. N. Wang

doi:10.31438/trf.hh2014.30

Selective water transport across uniform sub-nanometer pores in microfabricated membranes

T. Humplik, R. Raj, S. C. Maroo, T. Laoui, E. N. Wang

Department of Mechanical & Aerospace Engineering

Research output: Chapter in Book/Entry/Poem › Conference contribution

Abstract

We demonstrate selective water transport through uniform sub-nanometer pores using microfabricated zeolite membranes. Despite advances in micro/nanoscale manipulation, creating well-defined sub-nanometer pores for transport studies is challenging. We fabricated the first model platform to characterize and measure water transport limited to ≈5.5 Å pores over >20 mm² areas. Furthermore, with these membranes, we elucidated the effect of surface chemistry and pore confinement on water permeability. Using a custom-built flow cell, we showed osmotically-driven water transport where a more hydrophobic interface allows for an ≈10x increase in water flux. These insights will help tailor high performance desalination membranes, and can be extended to gas separation, sensing, and energy storage systems.

Original language	English (US)
Title of host publication	2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
Editors	Mark G. Allen, Mehran Mehregany
Publisher	Transducer Research Foundation
Pages	107-108
Number of pages	2
ISBN (Electronic)	9781940470016
DOIs	https://doi.org/10.31438/trf.hh2014.30
State	Published - 2014
Event	2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014 - Hilton Head Island, United States Duration: Jun 8 2014 → Jun 12 2014

Publication series

Name	Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop

Conference

Conference	2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
Country/Territory	United States
City	Hilton Head Island
Period	6/8/14 → 6/12/14

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering
Hardware and Architecture

Access to Document

10.31438/trf.hh2014.30

Cite this

Humplik, T., Raj, R., Maroo, S. C., Laoui, T., & Wang, E. N. (2014). Selective water transport across uniform sub-nanometer pores in microfabricated membranes. In M. G. Allen, & M. Mehregany (Eds.), 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014 (pp. 107-108). (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop). Transducer Research Foundation. https://doi.org/10.31438/trf.hh2014.30

Selective water transport across uniform sub-nanometer pores in microfabricated membranes. / Humplik, T.; Raj, R.; Maroo, S. C. et al.
2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014. ed. / Mark G. Allen; Mehran Mehregany. Transducer Research Foundation, 2014. p. 107-108 (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop).

Research output: Chapter in Book/Entry/Poem › Conference contribution

Humplik, T, Raj, R, Maroo, SC, Laoui, T & Wang, EN 2014, Selective water transport across uniform sub-nanometer pores in microfabricated membranes. in MG Allen & M Mehregany (eds), 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014. Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop, Transducer Research Foundation, pp. 107-108, 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014, Hilton Head Island, United States, 6/8/14. https://doi.org/10.31438/trf.hh2014.30

Humplik T, Raj R, Maroo SC, Laoui T, Wang EN. Selective water transport across uniform sub-nanometer pores in microfabricated membranes. In Allen MG, Mehregany M, editors, 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014. Transducer Research Foundation. 2014. p. 107-108. (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop). doi: 10.31438/trf.hh2014.30

Humplik, T. ; Raj, R. ; Maroo, S. C. et al. / Selective water transport across uniform sub-nanometer pores in microfabricated membranes. 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014. editor / Mark G. Allen ; Mehran Mehregany. Transducer Research Foundation, 2014. pp. 107-108 (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop).

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abstract = "We demonstrate selective water transport through uniform sub-nanometer pores using microfabricated zeolite membranes. Despite advances in micro/nanoscale manipulation, creating well-defined sub-nanometer pores for transport studies is challenging. We fabricated the first model platform to characterize and measure water transport limited to ≈5.5 {\AA} pores over >20 mm2 areas. Furthermore, with these membranes, we elucidated the effect of surface chemistry and pore confinement on water permeability. Using a custom-built flow cell, we showed osmotically-driven water transport where a more hydrophobic interface allows for an ≈10x increase in water flux. These insights will help tailor high performance desalination membranes, and can be extended to gas separation, sensing, and energy storage systems.",

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AB - We demonstrate selective water transport through uniform sub-nanometer pores using microfabricated zeolite membranes. Despite advances in micro/nanoscale manipulation, creating well-defined sub-nanometer pores for transport studies is challenging. We fabricated the first model platform to characterize and measure water transport limited to ≈5.5 Å pores over >20 mm2 areas. Furthermore, with these membranes, we elucidated the effect of surface chemistry and pore confinement on water permeability. Using a custom-built flow cell, we showed osmotically-driven water transport where a more hydrophobic interface allows for an ≈10x increase in water flux. These insights will help tailor high performance desalination membranes, and can be extended to gas separation, sensing, and energy storage systems.

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Selective water transport across uniform sub-nanometer pores in microfabricated membranes

Abstract

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Conference

ASJC Scopus subject areas

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