Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Mark F. Witinski"'
Autor:
Marilena Giglio, Andrea Zifarelli, Angelo Sampaolo, Giansergio Menduni, Arianna Elefante, Romain Blanchard, Christian Pfluegl, Mark F. Witinski, Daryoosh Vakhshoori, Hongpeng Wu, Vittorio M.N. Passaro, Pietro Patimisco, Frank K. Tittel, Lei Dong, Vincenzo Spagnolo
Publikováno v:
Photoacoustics, Vol 17, Iss , Pp - (2020)
Here we report on the broadband detection of nitrous oxide (N2O) and methane (CH4) mixtures in dry nitrogen by using a quartz-enhanced photoacoustic (QEPAS) sensor exploiting an array of 32 distributed-feedback quantum cascade lasers, within a spectr
Externí odkaz:
https://doaj.org/article/0d3bde69bdae42769479df9a7973360a
Autor:
Morgan G. Blevins, Harry L. Allen, Beckett C. Colson, Anna-Marie Cook, Alexandra Z. Greenbaum, Sheila S. Hemami, Joseph Hollmann, Ernest Kim, Ava A. LaRocca, Kenneth A. Markoski, Peter Miraglia, Vienna L. Mott, William M. Robberson, Jose A. Santos, Melissa M. Sprachman, Patricia Swierk, Steven Tate, Mark F. Witinski, Louis B. Kratchman, Anna P. M. Michel
Publikováno v:
Sensors, Vol 21, Iss 10, p 3532 (2021)
Microplastics (MPs) have been found in aqueous environments ranging from rural ponds and lakes to the deep ocean. Despite the ubiquity of MPs, our ability to characterize MPs in the environment is limited by the lack of technologies for rapidly and a
Externí odkaz:
https://doaj.org/article/c2fe418f52b543d28231898e7a155a78
Autor:
Patricia Swierk, Jose A. Santos, William Robberson, Mark F. Witinski, Beckett C. Colson, Louis B. Kratchman, Alexandra Z. Greenbaum, Joseph L. Hollmann, Peter Miraglia, Melissa M. Sprachman, Harry L. Allen, Steven Tate, Kenneth A. Markoski, Anna-Marie Cook, Morgan G. Blevins, Sheila S. Hemami, Ernest S. Kim, Anna P. M. Michel, Vienna L. Mott, Ava A. LaRocca
Publikováno v:
Sensors (Basel, Switzerland)
Sensors, Vol 21, Iss 3532, p 3532 (2021)
Sensors, Vol 21, Iss 3532, p 3532 (2021)
Microplastics (MPs) have been found in aqueous environments ranging from rural ponds and lakes to the deep ocean. Despite the ubiquity of MPs, our ability to characterize MPs in the environment is limited by the lack of technologies for rapidly and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::390ef85d335f123218cb55729706dc33
https://pubmed.ncbi.nlm.nih.gov/34069517
https://pubmed.ncbi.nlm.nih.gov/34069517
Autor:
Mark F. Witinski, Angelo Sampaolo, Frank K. Tittel, Daryoosh Vakhshoori, Andrea Zifarelli, Marilena Giglio, Pietro Patimisco, Romain Blanchard, Giansergio Menduni, Vincenzo Spagnolo, Christian Pfluegl, Arianna Elefante
Publikováno v:
Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for Protection of Critical Infrastructures Against Explosives and CBRN ISBN: 9789402420814
Mid-infrared spectral “fingerprints” of many hazardous and harmful gaseous substances are characterized by broad absorption bands, resulting from the merging of several absorption lines corresponding to ro-vibrational transitions. Broadband absor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e319ef5890ac2d164a202853c24fd884
http://hdl.handle.net/11589/226403
http://hdl.handle.net/11589/226403
Autor:
Lei Dong, Romain Blanchard, Mark F. Witinski, Vittorio M. N. Passaro, Andrea Zifarelli, Angelo Sampaolo, Arianna Elefante, Pietro Patimisco, Daryoosh Vakhshoori, Marilena Giglio, Frank K. Tittel, Hongpeng Wu, Vincenzo Spagnolo, Giansergio Menduni, Christian Pfluegl
Publikováno v:
Photoacoustics, Vol 17, Iss, Pp-(2020)
Photoacoustics
Photoacoustics
Graphical abstract
Highlights • Quartz-enhanced photoacoustic-based broadband detection is demonstrated. • Methane detection sensitivity of 200 ppb in 10 s integration time is achieved. • Multi-gas detection of mixtures of methane and nitr
Highlights • Quartz-enhanced photoacoustic-based broadband detection is demonstrated. • Methane detection sensitivity of 200 ppb in 10 s integration time is achieved. • Multi-gas detection of mixtures of methane and nitr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0cbc59843f831e9c841a87e93a95986
http://www.sciencedirect.com/science/article/pii/S2213597919300825
http://www.sciencedirect.com/science/article/pii/S2213597919300825
Autor:
Rhea J. Clewes, Chris R. Howle, Mark F. Witinski, Kalyani Krishnamurthy, Gokhan Ulu, Siobhan M. Conner, Linda Lee, Brandt C. Pein, Greg Vander Rhodes, Daryoosh Vakhshoori, Romain Blanchard
Publikováno v:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XX.
This article presents new hyperspectral imaging (HSI) results from a standoff chemical detection system that utilizes monolithic arrays of Distributed Feedback (DFB) Quantum Cascade Lasers (QCLs) as a source, with each array element at a slightly dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::436c82df45af7a23272a9c4f0de56721
https://doi.org/10.1117/12.2517760
https://doi.org/10.1117/12.2517760
Autor:
Mark F. Witinski, Andreas C. Geiger, Youlin Liu, James R. W. Ulcickas, Romain Blanchard, Garth J. Simpson
Publikováno v:
Image Sensing Technologies: Materials, Devices, Systems, and Applications VI.
A hyperspectral beam-scanning microscope operating in the long wave infrared (LWIR) is demonstrated for future application to stand-off imaging platforms. A 32-channel quantum-cascade laser (QCL) array enables rapid wavelength modulation for fast hyp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f0d3d5f8bdde8409116d25c5b4f2a4b
https://doi.org/10.1117/12.2518471
https://doi.org/10.1117/12.2518471
Autor:
Mark F. Witinski, Vittorio M. N. Passaro, Marilena Giglio, Christian Pfluegl, Arianna Elefante, Angelo Sampaolo, Pietro Patimisco, Romain Blanchard, Frank K. Tittel, Andrea Zifarelli, Daryoosh Vakhshoori, Giansergio Menduni, Vincenzo Spagnolo
Publikováno v:
Novel In-Plane Semiconductor Lasers XVIII.
We report on a quartz-enhanced photoacoustic (QEPAS) sensor employing a monolithic distributed-feedback quantum cascade laser array operating in a pulsed mode as a light source. The array consists of 32 quantum cascade lasers emitting in a spectral r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::246742de0525ef554ab8f767dd802fa2
https://doi.org/10.1117/12.2507926
https://doi.org/10.1117/12.2507926
Autor:
Christian Pfluegl, Mark F. Witinski, Chien-Sheng Liao, Masud Azimi, Daryoosh Vakhshoori, Romain Blanchard, Fred Huettig
Publikováno v:
Optical Sensors and Sensing Congress (ES, FTS, HISE, Sensors).
Using rapidly-tunable quantum cascade laser arrays, we demonstrate acquisition of absorption spectra over 50cm-1 with < 0.1cm−1 resolution and a minimum detectable absorbance of 1 × 10−4 over the full spectrum in < 0.5s.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbfa3313cdec2485fcb61944e2634009
https://doi.org/10.1364/sensors.2019.stu4d.5
https://doi.org/10.1364/sensors.2019.stu4d.5
Autor:
Mark F. Witinski
Publikováno v:
Micro- and Nanotechnology Sensors, Systems, and Applications X.
This presentation introduces the spectroscopic concepts and results enabled by arrays of Distributed Feedback (DFB) QCLs, with each element at a slightly different wavelength than its neighbor. In portable optical systems, such as standoff threat det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0681167c479b33cd57075b2e49695f58
https://doi.org/10.1117/12.2307834
https://doi.org/10.1117/12.2307834