Search Results - "Lewicki, Rafał"

QEPAS based ppb-level detection of CO and N2O using a high power CW DFB-QCL by Ma, Yufei, Lewicki, Rafał, Razeghi, Manijeh, Tittel, Frank K

“…An ultra-sensitive and selective quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor platform was demonstrated for detection of carbon monoxide (CO) and…”
Get full text

Quantum cascade lasers in chemical physics by Curl, Robert F., Capasso, Federico, Gmachl, Claire, Kosterev, Anatoliy A., McManus, Barry, Lewicki, Rafał, Pusharsky, Michael, Wysocki, Gerard, Tittel, Frank K.

“…Quantum cascade lasers (an array of 32 QC lasers is depicted). In the short space of 15 years since their first demonstration, quantum cascade lasers have…”
Get full text

Ppb-level detection of nitric oxide using an external cavity quantum cascade laser based QEPAS sensor by Dong, Lei, Spagnolo, Vincenzo, Lewicki, Rafał, Tittel, Frank K

“…Geometrical parameters of micro-resonator for a quartz enhanced photoacoustic spectroscopy sensor are optimized to perform sensitive and background-free…”
Get full text

Development of a mid-infrared nitrogen dioxide sensor based on Faraday rotation spectroscopy by Liu, Kun, Lewicki, Rafał, Tittel, Frank K.

“…A sensitive nitrogen dioxide (NO2) sensor system based on Faraday Rotation Spectroscopy (FRS) was developed. The advantages of FRS include high detection…”
Get full text

Ultrasensitive detection of nitric oxide at 5.33 μm by using external cavity quantum cascade laser-based Faraday rotation spectroscopy by Lewicki, Rafał, Doty, James H. III, Curl, Robert F, Tittel, Frank K, Wysocki, Gerard

“…A transportable prototype Faraday rotation spectroscopic system based on a tunable external cavity quantum cascade laser has been developed for ultrasensitive…”
Get full text

CW DFB RT diode laser-based sensor for trace-gas detection of ethane using a novel compact multipass gas absorption cell by Krzempek, Karol, Jahjah, Mohammad, Lewicki, Rafał, Stefański, Przemysław, So, Stephen, Thomazy, David, Tittel, Frank K.

“…The development of a continuous wave, thermoelectrically cooled (TEC), distributed feedback diode laser-based spectroscopic trace-gas sensor for…”
Get full text

A compact QCL based methane and nitrous oxide sensor for environmental and medical applications by Jahjah, Mohammad, Ren, Wei, Stefański, Przemysław, Lewicki, Rafał, Zhang, Jiawei, Jiang, Wenzhe, Tarka, Jan, Tittel, Frank K

“…A methane (CH4) and nitrous oxide (N2O) sensor based on a sensitive, selective and well established technique of quartz enhanced photoacoustic spectroscopy…”
Get more information

Measurements of carbon monoxide mixing ratios in Houston using a compact high-power CW DFB-QCL-based QEPAS sensor by Stefański, Przemysław, Lewicki, Rafał, Sanchez, Nancy P., Tarka, Jan, Griffin, Robert J., Razeghi, Manijeh, Tittel, Frank K.

“…Measurements of carbon monoxide (CO) mixing ratios in Houston, Texas, during the period from May 16, 2013 to May 28, 2013 were performed using a sensitive,…”
Get full text

CW DFB RT diode laser-based sensor for trace-gas detection of ethane using a novel compact multipass gas absorption cell by Krzempek, Karol, Jahjah, Mohammad, Lewicki, Rafał, Stefański, Przemysław, So, Stephen, Thomazy, David, Tittel, Frank K.

Get full text

Role of atmospheric ammonia in particulate matter formation in Houston during summertime by Gong, Longwen, Lewicki, Rafał, Griffin, Robert J., Tittel, Frank K., Lonsdale, Chantelle R., Stevens, Robin G., Pierce, Jeffrey R., Malloy, Quentin G.J., Travis, Severin A., Bobmanuel, Loliya M., Lefer, Barry L., Flynn, James H.

“…Simultaneous high-time-resolution measurements of atmospheric NH3, HNO3, soluble gas-phase chloride, and aerosol species were made in Houston, TX, from August…”
Get full text

Real time ammonia detection in exhaled human breath with a quantum cascade laser based sensor by Lewicki, R., Kosterev, A.A., Bakhirkin, Y.A., Thomazy, D.M., Doty, J., Lei Dong, Tittel, F.K., Risby, T.H., Solga, S., Kane, D., Day, T.

“…Quantum cascade laser based breath sensor platform for medical applications employing a quartz-enhanced photoacoustic spectroscopy technique is reported. The…”
Get full text

Breath ammonia and ethanol increase in response to a high protein challenge by Spacek, Lisa A., Mudalel, Matthew L., Lewicki, Rafal, Tittel, Frank K., Risby, Terence H., Stoltzfus, Jill, Munier, Joseph J., Solga, Steven F.

“…Abstract Quantifying changes in ammonia and ethanol in blood and body fluid assays in response to food is cumbersome. We used breath analysis of ammonia,…”
Get full text

Factors influencing breath ammonia determination by Solga, Steven F, Mudalel, Matthew, Spacek, Lisa A, Lewicki, Rafal, Tittel, Frank, Loccioni, Claudio, Russo, Adolfo, Risby, Terence H

“…Amongst volatile compounds (VCs) present in exhaled breath, ammonia has held great promise and yet it has confounded researchers due to its inherent…”
Get more information

QEPAS based ppb-level detection of CO and N_2O using a high power CW DFB-QCL by Ma, Yufei, Lewicki, Rafał, Razeghi, Manijeh, Tittel, Frank K.

Get full text

QEPAS based detection of broadband absorbing molecules using a widely tunable, cw quantum cascade laser at 8.4 μm by Lewicki, Rafal, Wysocki, Gerard, Kosterev, Anatoliy A., Tittel, Frank K.

Get full text

Support Vector Machine Modeling Using Particle Swarm Optimization Approach for the Retrieval of Atmospheric Ammonia Concentrations by Zhang, Jiawei, Tittel, Frank K., Gong, Longwen, Lewicki, Rafal, Griffin, Robert J., Jiang, Wenzhe, Jiang, Bin, Li, Mingbao

“…This study was performed in order to improve the estimation accuracy of atmospheric ammonia (NH 3 ) concentration levels in the Greater Houston area during…”
Get full text

Mo1014 A High Protein Challenge Increases Gut-Derived Exhaled Breath Ammonia by Mudalel, Matthew L, Spacek, Lisa A, Tittel, Frank K, Lewicki, Rafal, Risby, Terence H, Stoltzfus, Jill, Solga, Steven F

Get full text

High-Performance Quantum Cascade Lasers Grown by Metal-Organic Vapor Phase Epitaxy and Their Applications to Trace Gas Sensing by Troccoli, M., Diehl, L., Bour, D.P., Corzine, S.W., Yu, N., Wang, C.Y., Belkin, M.A., Hofler, G., Lewicki, R., Wysocki, G., Tittel, F.K., Capasso, F.

“…We present an overview of our results on the design, material growth, device characterization, and spectroscopic applications of MOVPE-grown quantum cascade…”
Get full text

Changes in the concentration of breath ammonia in response to exercise: a preliminary investigation by Solga, Steven F, Mudalel, Matthew, Spacek, Lisa A, Lewicki, Rafal, Tittel, Frank K, Loccioni, Claudio, Russo, Adolfo, Ragnoni, Alessandro, Risby, Terence H

“…Breath ammonia has proven to be a difficult compound to measure accurately. The goal of this study was to evaluate the effects that the physiological…”
Get more information

Ultrasensitive detection of nitric oxide at 5.33 km by using external cavity quantum cascade laser- based Faraday rotation spectroscopy by Lewicki, Rafal, Doty, James H, Curl, Robert F, Tittel, Frank K, Wysocki, Gerard

“…A transportable prototype Faraday rotation spectroscopic system based on a tunable external cavity quantum cascade laser has been developed for ultrasensitive…”
Get full text