Center researchers have developed an exotic functional filtering membrane made by confining liquid crystal helical nanofilaments in nanometer-dimension cylindrical pores of aluminum oxide. The nanofilaments are chiral, that is can be left or right handed as shown in the electron microscope image on the right. If they are all made with one handedness then this is a convenient way of separating chiral molecules passing through the membrane. This work has been published in "Physico-Chemical Confinement of Helical Nanofilaments," S. Lee, H. Kim, T.J. Shin, E. Tsai, J.M. Richardson, E. Korblova, D.M. Walba, N.A. Clark, S.B. Lee, and D.K. Yoon, Soft Matter 11, (18), 3653-3659 (2015); "Multidimensional Helical Nanostructures in Multiscale Nanochannels," S. Lee, H. Kim, E. Tsai, J.M. Richardson, E. Korblova, D.M. Walba, N.A. Clark, S.B. Lee, and D.K. Yoon, Langmuir 31, (29), 8156-8161 (2015); and "Multistep Hierarchical Self-Assembly of Chiral Nanopore Arrays," H. Kim, S. Lee, T.J. Shin, E. Korblova, D.M. Walba, N.A. Clark, S.B. Lee, and D.K. Yoon, PNAS 111, 14342-14347 (2014).

Groups: Clark, Walba, Yoon
(February 2014)


Liquid Crystals of nanoDNA
Helical nanofilaments of the banana B4 liquid crystal phase formed in nanochannels in a porous anodic aluminum oxide film.
 

 

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