Fractal nematic colloids
Hashemi, S. M. (Author), Jagodič, Uroš (Author), Mozaffari, M. R. (Author), Ejtehadi, M. R. (Author), Muševič, Igor (Author), Ravnik, Miha (Author)

.pdfPDF - Presentation file, Download (2,34 MB)
MD5: 95641B7810B5CDAE34875B72E54C50D7
URLURL - Source URL, Visit https://www.nature.com/articles/ncomms14026 This link opens in a new window

Fractals are remarkable examples of self-similarity where a structure or dynamic pattern is repeated over multiple spatial or time scales. However, little is known about how fractal stimuli such as fractal surfaces interact with their local environment if it exhibits order. Here we show geometry-induced formation of fractal defect states in Koch nematic colloids, exhibiting fractal self-similarity better than 90% over three orders of magnitude in the length scales, from micrometers to nanometres. We produce polymer Koch-shaped hollow colloidal prisms of three successive fractal iterations by direct laser writing, and characterize their coupling with the nematic by polarization microscopy and numerical modelling. Explicit generation of topological defect pairs is found, with the number of defects following exponential-law dependence and reaching few 100 already at fractal iteration four. This work demonstrates a route for generation of fractal topological defect states in responsive soft matter.

Keywords:soft matter physics, colloidal particles, nematics, fractals, topology
Tipology:1.01 - Original Scientific Article
Organization:FMF - Faculty of Mathematics and Physics
Publisher:Nature Publishing Group
Number of pages:str. 12106-1-14026-9
Numbering:Vol. 8
ISSN on article:2041-1723
DOI:10.1038/ncomms14026 This link opens in a new window
COBISS.SI-ID:30202663 This link opens in a new window
Average score:(0 votes)
Your score:Voting is allowed only to logged in users.
AddThis uses cookies that require your consent. Edit consent...

Record is a part of a journal

Title:Nature communications
Publisher:Springer Nature
COBISS.SI-ID:2315876 This link opens in a new window

Document is financed by a project

Funder:EC - European Commission
Funding Programme:FP7
Project no.:304040
Name:Channelfree liquid crystal microfluidics


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:16.02.2018

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections:


Leave comment

You have to log in to leave a comment.

Comments (0)
0 - 0 / 0
There are no comments!