Abstract
We developed a portable odorant detection system consisting of CMOS imaging sensor and collagen micropillars with cells that express olfactory receptors. Although the sensitivity of the CMOS image sensor was insufficient to detect the fluorescence signal from a single cell, stacking cells in the pillars allowed vertical accumulation of fluorescence from each cell and achieved supply of sufficient odorant-induced fluorescence to the CMOS image sensor. We think that our portable odor detection system will be a useful platform for quantitative and selective portable odorant sensor.
