Welcome to our new bachelors student - Joana!
She will be learning microfluidic LC shell production and be working with Rao for the next few months
(Click the figure image above to access the article online, please email Jan if you cannot download the pdf file)
Congratulations to JungHyun & Rao on the publication in the Journal of Molecular Liquids titled: “Sub-second dynamic phototuning of alignment in azodendrimer-doped nematic liquid crystal shells”!
For the 1st time(!!), a study documents the photoswitching of azodendrimer in liquid crystal shells produced by microfluidics. Ultimately, our group members & colleagues find that phase separation may occur in shells when the dendrimer is in the trans ground state, and that photo switching turns such shells uniform - further indicating that the cis state is better soluble in the LC.
Hooray for the good start to the 2018 year
(Fyi - Also, I think this paper is the 1st to show results obtained from our new confocal microscope as well…so HD, so cool)
(Click the graphical abstract image above to access the article online, please email either Jan or Rao if you cannot download the pdf file)
Congratulations to Larry & Rao on the publication in Langmuir titled: “Microfluidic Tensiometry Technique for the Characterization of the Interfacial Tension between Immiscible Liquids”!
This is Larry's 1st paper in our group (!) and also Rao's 1st time serving as last author on a paper (!)
In this study, Larry and Rao borrow inspiration from the biologists and use the novel technique of micropipette aspiration (commonly used to measure the viscoelastic properties of living cells) to measure the interfacial tension of 5CB, water, and surfactants with a high degree of accuracy (from the sub-millinewton per meter to several hundred millinewton per meter range) solely from experimental observations of the droplet deformation. This is highly unique as information on the liquid density is not needed to find the interfacial tension.
Congratulations to YooMee Kye on her successful defense of her M.Sc. thesis entitled "Multi-core liquid crystal-polymer composite fibers produced by electrospinning" at the GSCST, Suwon, Korea, on the 12th of June 2015. Her work (the key results of which we hope will soon appear also as a journal article) is the first study of electrospinning fibers with more than one liquid crystal core, importantly with each core containing a different liquid crystal. This gives one and the same fiber multiple functionalities and the ability to respond to different stimuli. Below you see us enjoying an excellent Korean dinner as we celebrated the defense in the evening.
Also this summer we have the pleasure to host three students from the USA, within the framework of an NSF-funded IRES program devoted to liquid crystal fibers and filaments, headed by Prof. Tony Jakli at Kent State University (co-PIs are Prof. Margaret Frey, Cornell, and Prof. John West, Kent State University). This year our visitors are Emily Kerr, Aditi Naik and Vanessa Sanchez. Here you see them enjoying Luxembourgish Flammkuchen together with Jan and Catherine (who is the local group member working the most with them during their stay).
We welcome Camila Honorato as a member of our group! She will be working as a doctoral candidate in the MISONANCE project, carried out in collaboration with the team of Prof. Tanja Schilling at PhyMS, UL. Camila will study the self-assembly of water-suspended cellulose nanocrystals into lyotropic liquid crystal phases, and how this self-assembly competes with the tendency of electrostatically charged nanorod suspensions to arrest into a jammed state. She will interact closely with Anja Kuhnold from Prof. Schilling's group, who is doing theory and computer modeling corresponding to Camila's experiments.
Benjamin Henx, bachelor student in the University of Luxembourg physics program, will do his thesis work together with JungHyun during the 2015 spring semester. He will be working on microfluidics, liquid crystals and polymerization.
Sammy Wagner, student in the University of Luxembourg Master program for physics, will carry out his Master thesis work in the Experimental Soft Matter Physics group. He will be working with suspensions of cellulose nanocrystals, studying liquid crystal and glass formation in connection to our project on the topic, MISONANCE.
Duckhee Kim, who did an internship with Jan while Duckhee did his undergraduate studies at SKKU and Jan was at SNU, is starting his Master studies in physics at University of Luxembourg. He joins the Experimental Soft Matter Physics group on part-time basis as a 'student researcher'.
JungHyun Noh is the group's first Ph.D. candidate after the move to Luxembourg. She secured a personal Ph.D. grant from the Fonds National de la Recherche Luxembourg (FNR) for a project entitled ULISCO. The project deals with innovative ways of making liquid crystal shells as well as the study of the topological defects arising in these shells.
Congrats to Kevin for defending his B.Sc. thesis entitled "Topological Defects in Liquid Crystal Shells" very successfully. Kevin did a great job while he was with us and we hope that his and JungHyun's research efforts will soon be summarized in a new paper.
Kevin Reguengo de Sousa, undergraduate student in the University of Luxembourg physics program, will be carrying out his thesis work with the group during the fall. He will work together with JungHyun on liquid crystal shells.
It is with great pleasure that we welcome our new Ph.D. candidate, Catherine Reyes, coming from Cornell University where she carried out her Master studies with Prof. Margaret Frey. Catherine should have arrived already in September but the paper work for allowing a US citizen and Cornell graduate to start as Ph.D. candidate in Luxembourg turned out to be beyond our wildest imagination… Anyway, she is finally here and she will be working full time on liquid crystal-funcationalized electrospun fibers for wearable technology.
Congratulations to JungHyun Noh who successfully defended her M.Sc. thesis, “Two Novel Cholesteric Liquid Crystal Systems: Microfluidics-Produced Droplets and Self-Assembled Cellulose Nanocrystal Films” on the 6th of December 2013 at the Graduate School of Convergence Science & Technology. The thesis will soon be available for download from the publications page.
Congratulations to Dr. Hsin-Ling Liang who successfully defended her Ph.D. thesis, “Microfluidic Produced Liquid Crystalline Shells: Self-assembled structures in nematic and smectic shells” on the 25th of September 2013 at Johannes-Gutenberg-Universität Mainz. The thesis will soon be available for download from
the publications page.
Congratulations to Dr. Stefan Schymura who successfully defended his Ph.D. thesis, “Liquid Crystalline Carbon Nanotube Suspensions: From Unique Challenges to Unique Properties” on the 4th of July 2013 at Martin-Luther-Universität Halle-Wittenberg. The thesis is available for download in pdf format by following this link
YooMee Kye, new student at the GSCST on a combined Master-PhD track, joins the SNM lab. She will (at least to begin with) be working with electrospinning of liquid crystal-functionalized fibers with multiple cores.
Congratulations to Dr. Eva Enz who successfully defended her Ph.D. thesis, “Electrospun Polymer - Liquid Crystal Composite Fibres” on the 16th of April 2013 at Martin-Luther-Universität Halle-Wittenberg. The thesis is available for download in pdf format by following this link
Two information events for students interested in joining the GSCST are coming up:
- 9th of October in the AICT Conference Room A101, Gwanggyo Campus
- 11th of October, Mogam Hall 1st floor, Gwanak Campus.
With the 2012 spring semester starting on the first of March, three new M.Sc. students and one new Ph.D. student join the SNM lab:
Following the GRC (Gordon Research) Conference on Liquid Crystals Jan, Catherine, JungHyun and Anshul attended this June in Maine, and a seminar on gender inclusion within research labs Jan and Anshul attended, we felt it was necessary to include a statement about this on our website.
We live in polarizing times when it's become easier than ever to ostracize people just because they may think a bit differently, or look a bit differently, from us, but actually these individual traits can help our communities work and think better.
Have a look at our statement under the Team menu under On Diversity & Inclusion
Welcome to both Anjali (left) and Shameek (right) who have joined our team as phd students starting in July.
Anjali will be working on making LC shells for advancing bio-related projects, while Shameek will be working on finding new polymers for advancing applications related to electrospun LC-fibers.
We have the pleasure to be hosting Ross Volpe, Ph.D. candidate, from Prof. Christopher Yakacki's group
at the University of Denver, Colorado, USA, until August (the longest we've had a guest over yet!).
During his stay, he will mostly work with Rao on further advancing the actuation of micro shells & also start the development on actuating cylinders. We hope that these months will result in a great collaboration!