LC vision: New application in cancer detection

The thin layers of homogeneously oriented NLC applied on the surface under investigation as a free film can be used as unusual recording media that pe rmits to Visualize the two-dimensional distribution of surface tension with high optical resolution and sensitivity. The changes of surface tension ma y detect different local defects without applying external electrical field s. On this basis a new non-destructive method to study the quality of diffe rent material surfaces has been developed. Here we discuss the new applicat ion of NLC technique for histological identification of malignancies.