Deposition of composite coatings from particle-particle and particle-yeast blends by convective-sedimentation assembly

► Coatings from bimodal particle suspensions can be conveniently deposited by convective-evaporative assembly. ► Substrate wettability and suspension composition affect coating microstructure. ► Size ratio and charge affect deposition and convective mixing or demixing. ► Saccharomyces cerevisiae behave as negatively-charged particles. ► Particle-yeast coatings are open-packed structures (15-45% mean void space).