Zellers LabIntegrated Environmental Microsystems
Zellers Lab - Integrated Environmental Microsystems | |||||||
Exposure Science, Exposure Technology, air monitoring, biological monitoring, direct-reading instruments, sampling strategies, exposure modeling, Lab-On-A-Chip, Micro Gas Chromatography, Micro Instrumentation, Integrated Environmental Microsystems; Microsensor Arrays; Microanalytical, ; Chemometrics, VOCs, Complex Mixtures; Industrial Hygiene, Environmental Monitoring, Biomarkers, Homeland Security, Separations, Preconcentration, Detection, MEMS
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| Description |  |
The assessment of human exposure to complex mixtures of natural and anthropogenic chemicals ranks among the most important global environmental health challenges. Our ability to meet evolving needs in this area relies critically on innovations in exposure science and technology. Advances that facilitate accurate, high-resolution measurements are integral to mankind's efforts to unravel the intricate relationships between exposure and the risks of adverse health effects, and to minimize such risks.
Professor Zellers' research and teaching interests lies at the intersection of Environmental Health Science, Chemistry, and Engineering. His work deals with the fundamental and applied aspects of exposure science and technology and contributes to the broad goal of developing the means to quantitatively analyze complex chemical mixtures of arbitrary composition in field settings.
 Microsensors and Microsensor Arrays.
In the area of chemical microsensors, Dr. Zellers' focus has evolved from a primary focus on microsensors that utilize surface-acoustic-wave (SAW) propagation through small piezoelectric substrates to a broader set of transduction platforms, including film-bulk-acoustic-resonators, chemiresistors, capacitors, cantilevers, calorimeters, and multi-transducer arrays employing combinations of such devices... >> more |
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Lab On A Chip.
Increasing evidence suggests that the number of vapors that can be simultaneously recognized and differentiated with standalone sensor arrays is limited and that quantitative analyses of even moderately complex vapor mixtures requires coupling the microsensor array to an upstream GC separation stage. For detecting low analyte concentrations, preconcentration may also be required, particularly for.. >> more |
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Preconcentration Materials and Devices.
For preconcentration, various adsorbent materials are being developed, including carbon molecular sieves, graphitized carbons, and carbon nanotubes, with judiciously designed or selected surface areas, pore-size distributions, and/or functionalities for use in multi-stage preconcentator devices. Our collaborators in electrical and mechanical engineering are building such microfabricated devices with.. >> more |
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Separation Technology.
For separation of complex mixture components, we employ chromatographic separation channels etched into small Si chips. Among the most critical factors affecting the performance of such channels used as gas chromatographic (GC) separation microcolumns are the consistency and uniformity of stationary phase deposition, deactivation of surface-adsorption sites on the microcolumn walls, and the stability.. >> more |
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Chemometrics.
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Applications.
Indoor air quality, breath biomarker analysis, homeland security, environmental tobacco smoke, industrial hygiene. |
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Publications.
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