▎ 摘　　要

Electrooptic cells containing two transparent graphene electrodes and a nematic liquid crystal are fabricated. Between crossed polarizers, the transmission of monochromatic light versus voltage shows the well-known maxima and minima that are characteristic of the Freedericksz transition. The peaks appear approximately at the same voltage as those of conventional test cells equipped with indium tin oxide electrodes. This indicates that the conductivity of the graphene layers is sufficiently high to replace indium tin oxide. However, microscopic studies reveal that the alignment of the liquid crystal is not perfect, yet. Means of improving the alignment are suggested.