| abstract |
An FBAR device may be chemically functionalized by depositing an interactive layer so that targeted chemicals are preferentially adsorbed. Such miniaturized chemical sensors may be combined with wireless network technology. For example, a chemical sensor may be integrated in a cell phone, PDA, a watch, or a car with wireless connection and GPS. Since such devices are widely populated, a national sensor network may be established. Consequently, a national toxicity map can be generated in real time. Detailed chemical information may be obtained, such as if a chemical is released by a source fixed on ground or by a moving object, or if is spread by explosives or by wind and so on. |