Category Archives

9 Articles

15/02/2017 - JPCM Review online (Open Access!)

JPCM_Review now online!

Our topical review on Liquid Crystals in micron-scale droplets, shells and fibers is finally published online in the "Journal of Physics: Condensed Matter". In this manuscript, we outline the recent trend towards curved, soft and flexible interfaces in liquid crystal research. After a short introduction to the concepts of liquid crystals, we in particular focus on LC drops and shells or LCs enclosed by electro-spun polymer fibers. And the best thing is: The mansucript is published under Open Access license (Creative Commons 3.0)! So please enjoy reading the manuscript without paywall here!

04/04/2016 - New article published in J. Mater. Chem. C

by Martin Urbanski

DISGONA_Graphical_Abstract

Our new research paper on nematic liquid crystals doped with gold nanoparticles was published online in the "Journal of Materials Chemistry C". The work entitled Nanoparticles dispersed in liquid crystals: Impact on conductivity, low-frequency relaxation and electro-optical performance sheds new light on the influence of nanoparticle doping on the dielectric and conductive behavior of the nematic host phase. We report that the main effect is an ionic contamination, which leads to electrode polarization and a deterioration of electo-optic performance. The liquid crystalline properties (e.g. dielectric anisotropy, order parameter) are, however, not affected by the presence of nanoparticles.

17/03/2016 - SPIE proceedings online

by Martin Urbanski

Good news: Our SPIE manuscript is online now! In collaboration with Giusy Scalia and Jan Lagerwall we studied the effect of carbon nanotubes on the physical properties on a LC host material. By dielectric spectroscopy and careful POM studies we revealed fascinating interactions which might be beneficial for future applications. If you are interested in more details, read the full story here!

30/09/2015 Cdot paper published

by Martin Urbanski

Liquid Crystal Paper ImageOur research paper on liquid crystalline carbon dot dispersions was published online in the journal "Liquid Crystals". The work entitled"Chemically and thermally stable, emissive carbon dots as viable alternatives to semiconductor quantum dots for emissive nematic liquid crystal-nanoparticle mixtures with lower threshold voltage" sheds light onto a new class of luminescent nanoparticles, which could replace widely used but toxic semiconductor particles. It therefore continues our previous studies on LC nanocomposites and is a big step towards wide applicability.

Thanks to Torsten Hegmann and all coauthors for this fruitful collaboration!

17/09/2015 Review on nanoparticle doping published

My review on nanoparticle doping has been published today in the fourth issue of "Liquid Crystals Today", the newsletter of the International Liquid Crystal Society (ILCS). After being awarded the ILCS Blenn-Brown Prize in 2014 I was invited to summarize my research on nanoparticle doping in a review article for the society newsletter. I am very happy that this paper is finally published, if you want to take a look you can find it here.

05/06/2015 - Review article Proofs arrived

Good news from my Review article about nanoparticle doping in nematic liquid crystals: I just got notified that the article is now being processed and was asked to check the final proofs before publication! The review will be published in the 4th issue of Liquid Crystals Today, the peer-reviewed quarterly newsletter of the International Liquid Crystal Society. Although maybe not featuring the best bibliographic measures, this journal is closely connected to the scientific LC community, so I consider this a great opportunity to have my work acknowledged.

10/05/2015 - Cdot report

Cdot_report_image
Although not directly connected to the DISGONA project, I found time to finish the experimental report on the Cdot-Samples from Prof. Hegmann's lab at the Liquid Crystal Institute in Kent, Ohio. We had anticipated these experiments for very long, we discussed the details last year on the ILCC in Dublin already. Finally we got some very interesting results on these promising new type of nanoparticles, so maybe we can have a manuscript for publication soon! Thanks to Torsten for this great collaboration!