Next Article in Journal
Identification of Novel Small Molecules as Inhibitors of Hepatitis C Virus by Structure-Based Virtual Screening
Next Article in Special Issue
Synthesis of 1,4-Bis(phenylethynyl)benzenes and Their Application as Blue Phase Liquid Crystal Composition
Previous Article in Journal
Usefulness of Plasma YKL-40 in Management of Community-Acquired Pneumonia Severity in Patients
Previous Article in Special Issue
Enhanced Solar Cell Conversion Efficiency Using Birefringent Liquid Crystal Polymer Homeotropic Films from Reactive Mesogens
Int. J. Mol. Sci. 2013, 14(11), 22826-22844; doi:10.3390/ijms141122826

Tuning Fluidic Resistance via Liquid Crystal Microfluidics

Max Planck Institute for Dynamics and Self Organization (MPIDS), Am Faßberg 17, 37077 Göttingen, Germany
Received: 26 September 2013 / Revised: 4 November 2013 / Accepted: 8 November 2013 / Published: 19 November 2013
View Full-Text   |   Download PDF [2808 KB, 19 June 2014; original version 19 June 2014]   |   Browse Figures


Flow of molecularly ordered fluids, like liquid crystals, is inherently coupled with the average local orientation of the molecules, or the director. The anisotropic coupling—typically absent in isotropic fluids—bestows unique functionalities to the flowing matrix. In this work, we harness this anisotropy to pattern different pathways to tunable fluidic resistance within microfluidic devices. We use a nematic liquid crystalline material flowing in microchannels to demonstrate passive and active modulation of the flow resistance. While appropriate surface anchoring conditions—which imprint distinct fluidic resistances within microchannels under similar hydrodynamic parameters—act as passive cues, an external field, e.g., temperature, is used to actively modulate the flow resistance in the microfluidic device. We apply this simple concept to fabricate basic fluidic circuits, which can be hierarchically extended to create complex resistance networks, without any additional design or morphological patterning of the microchannels.
Keywords: microfluidics; liquid crystals; surface anchoring; flow resistance; flow circuits microfluidics; liquid crystals; surface anchoring; flow resistance; flow circuits
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
MDPI and ACS Style

Sengupta, A. Tuning Fluidic Resistance via Liquid Crystal Microfluidics. Int. J. Mol. Sci. 2013, 14, 22826-22844.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


Cited By

[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert