화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.375, 81-87, 2002
Magnetically induced alignment of ferro-nematic suspension on PVCN-F layer
We have observed magnetically controlled anchoring of ferro-nematic suspensions (FNS) on a fluoro-poly(vinyl)-cinnamate (PVCN-F) layer. We found that with the application of a weak magnetic field to a cell filled with the ferro-suspension, we could induce an easy (orientational) axis of weak anchoring energy on the polymer surface. By varying the direction of the magnetic field, one can change the easy axis orientation of liquid crystal (LC). We believe that the magnetically induced alignment of the ferro-nematic suspension is caused by the precipitation of ferro-particles on the polymer substrate. As a result, this alignment can be manipulated by a small magnetic field. The developed system is very promising for ultra-sensitive magnetically controlled LC devices for information processing and storage.