Means For Identifying Sensed Particle Matter

There is growing interest in ubiquitous monitoring of the ambient atmosphere indoors and outdoors. To address this opportunity, low-cost, fixed and portable particulate monitors are under development. UC Berkeley researchers developed a portable particulate monitor. That patent pending device samples the ambient atmosphere and measures the mass of particles. UC Berkeley researchers have expanded the functionality of that portable device to include the analysis and identification of particles that it senses. The enhanced device can also clean itself of particles and thereby extend its operating life. The Berkeley monitor can determine the concentration of particles in the ambient air such as particles produced from combustion, emission or distribution of bioaerosols, bacterial aerosols, allergens (i.e. pollen), and gaseous pollutants. It could therefore could be used to alert users to the presence of allergens, particles that are harmful to inhale (i.e. silica), as well as toxic or explosive gases. In addition to portable applications, these devices could be permanently installed in buildings, HVAC systems and forced-air furnaces. Michael Cohen mcohen@berkeley.edu 510-643-4218

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