Multicomponent Olfactory Display Using Solenoid Valves and SAW Atomizer and its Blending-Capability Evaluation

An olfactory display for blending many ingredients at any recipe was developed. It consists of microdispensers based upon solenoid valves and surface acoustic wave atomizer. The accuracy and stability were much improved compared with previous olfactory display using micropumps. Then, its blending capability was tested using sensory test such as triangle test. It was found that the scent blended in the proposed olfactory display was identical to the one blended in advance in the liquid phase. Finally, the durability of the amorphous Teflon coating used for enhancing atomization capability was investigated. The durability of the amorphous Teflon coating was much improved when the concentration of silane-coupling agent was modified.