A unique deposition that can be achieved in coacervation during evaporation is the arrangement of gradients of dyes in the coacervates (Figure ). By adding single or multiple dyes on top of the evaporating droplet with the peptide, the coacervates that form can encapsulate the dyes at differing concentrations. This can be used to form surface gradients of the single dye or gradients of combinations of dyes in ways that was previously impossible (Figures and). This special deposition method may allow to fabricate gradients of indicators that can be used as sensors with higher sensitivity. Forming gradients of drug molecules may aid in research focused on finding the optimal drug dosage for specific cells or optimizing synergistic or antagonistic drug combinations. The gradients could also be used to study antibiotic resistance by probing the response of different bacteria to various concentrations of antibiotics. Additionally, it may be possible to utilize these gradients in dye-sensitized solar cells, photonic devices, and metamaterials.