In an effort to improve these sheets, they are processing them which could affect their properties. From there, they are experimenting with attaching bacterial spores to sheets of the microbial cellulose, and then using the contractile properties of these spores in the presence of differing relative humidities to cause the sheets to bend. To attach the spores to the cellulose, they are attempting to express cellulose binding domains (CBDs) on the spore coats. The sheets of microbial cellulose that they processed and gave us allowed us to compare the usefulness of the microbial cellulose as a basis for a biosensor through our experiments in testing the binding affinities of a CBD on both processed and unprocessed sheets. In turn, our experiments testing the binding affinities helped guide the Stanford-Brown choice of cellulose processing technique for making sheets to which the spores will attach.