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

T. Humplik, R. Raj, Shalabh Chandra Maroo, T. Laoui, E. N. Wang

Research output: Chapter in Book/Report/Conference proceedingConference 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 mm 2 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 languageEnglish (US)
Title of host publication2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
EditorsMehran Mehregany, Mark G. Allen
PublisherTransducer Research Foundation
Pages107-108
Number of pages2
ISBN (Electronic)9780964002494
StatePublished - Jan 1 2014
Event2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014 - Hilton Head Island, United States
Duration: Jun 8 2014Jun 12 2014

Publication series

NameTechnical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop

Conference

Conference2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
CountryUnited States
CityHilton Head Island
Period6/8/146/12/14

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Hardware and Architecture

Fingerprint Dive into the research topics of 'Selective water transport across uniform sub-nanometer pores in microfabricated membranes'. Together they form a unique fingerprint.

  • 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. Mehregany, & M. G. Allen (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.