Biosensors are able to detect minute molecules to help monitor a person’s health and their environment. Scientists are developing sensors that are sensitive enough to detect even the smallest presence of molecules. As a result, disease or dangerous environmental contaminants can quickly be assessed. This device consists of a tiny glass slide of sliver with protein receptors applied to it. When the receptors bind with their matching signal molecule, light waves traveling across the chip are perturbed into a recognizable interference pattern. Using this combination of light waves and biomolecules has resulted in a biochip a magnitude more sensitive than other current comparable sensors.