Next Article in Journal
Invisibility and PT Symmetry: A Simple Geometrical Viewpoint
Next Article in Special Issue
Chiral Liquid Crystals: Structures, Phases, Effects
Previous Article in Journal
Symmetry Perspectives on Some Auxetic Body-Bar Frameworks
Previous Article in Special Issue
Dynamic Processes in Prochiral Solvating Agents (pro-CSAs) Studied by NMR Spectroscopy
Article Menu

Export Article

Open AccessReview
Symmetry 2014, 6(2), 383-395;

Hydrodynamic Helical Orientations of Nanofibers in a Vortex

Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
Received: 15 April 2014 / Revised: 14 May 2014 / Accepted: 15 May 2014 / Published: 20 May 2014
(This article belongs to the Special Issue Supramolecular Chirality)
View Full-Text   |   Download PDF [1359 KB, uploaded 20 May 2014]   |  


In this review article, I report our recent studies on spectroscopic visualizations of macroscopic helical alignments of nanofibers in vortex flows. Our designed supramolecular nanofibers, formed through self-assemblies of dye molecules, helically align in torsional flows of a vortex generated by mechanical rotary stirring of the sample solutions. The nanofiber, formed through bundling of linear supramolecular polymers, aligns equally in right- and left-handed vortex flows. However, in contrast, a one-handedly twisted nanofiber, formed through helical bundling of the supramolecular polymers, shows unequal helical alignments in these torsional flows. When the helical handedness of the nanofiber matches that of the vortex flow, the nanofiber aligns more efficiently in the flowing fluid. Such phenomena are observed not only with the artificial helical supramolecular nanofibers but also with biological nanofibers such as double-stranded DNA. View Full-Text
Keywords: nanofiber; supramolecular polymer; DNA; vortex; stirring; linear dichroism; helical alignment nanofiber; supramolecular polymer; DNA; vortex; stirring; linear dichroism; helical alignment

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Tsuda, A. Hydrodynamic Helical Orientations of Nanofibers in a Vortex. Symmetry 2014, 6, 383-395.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Symmetry EISSN 2073-8994 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top