January 2014

Bernd Wicklein visits the SNM and LC Nano groups

28/01/14 01:13

Dr. Bernd Wicklein from Stockholm University is visiting the Lagerwall and Scalia groups (SNM and LC Nano, respectively) for two weeks within the framework of our Swedish-Korean collaboration on cellulose nanocrystals.

Tags: visitors

JungHyun awarded for her presentation at KLCC

25/01/14 04:11

JungHyun Noh received a best presentation award for her talk at the Korean Liquid Crystal Conference in Jeonju, 23rd-24th of January 2014, on the microfluidic preparation of cholesteric liquid crystal droplets and the analysis of their photonic behaviour. Congratulations! This work was also recently published in Journal of Materials Chemistry C, which chose to feature her work on the cover page.

Tags: students, presentations, awards

New review on cellulose nanocrystal self-assembly in NPG Asia Materials

11/01/14 08:44

Our review article on the balance between liquid crystalline self-assembly and glass formation in colloidal suspensions of cellulose nanocrystal (CNC) is now published (open access!) in NPG Asia Materials. You can download it without subscription from the nature.com web site here. The paper is a result of our collaboration with Lennart Bergström’s group at Stockholm University as well as with Giusy Scalia’s group here at the GSCST. We discuss how the tendency for liquid crystalline ordering in colloidal suspensions of crystalline nanorods of cellulose competes with gelation, or glass formation. The liquid crystal formation dominates at low CNC concentration but at somewhat higher concentrations gelation sets in and prevents further changes of the liquid crystal phase diagram, as well as a further reduction under equilibrium conditions in the helical pitch of the chiral nematic phase that is the single liquid crystal phase found so far in CNC suspension. We briefly discuss how one might proceed to shift the balance in favor of liquid crystal ordering and thus see also transitions to higher ordered liquid crystal phases, e.g. columnar or smectic.

Tags: publications

Feature on J. Mater. Chem. C cover page

09/01/14 12:47

Journal of Materials Chemistry C chose to feature our article on photonic cross communication between cholesteric droplets on the front page of issue 5, volume 2, 2014. Congratulations JungHyun!

Tags: publications