Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Vasanthi Sivaprakasam"'
Autor:
Vasanthi Sivaprakasam, Matthew B. Hart
Publikováno v:
ACS Omega, Vol 6, Iss 15, Pp 10150-10159 (2021)
Externí odkaz:
https://doaj.org/article/ef1d23cf87a740ff9025ff2e05b378f8
Autor:
Matthew B. Hart, Vasanthi Sivaprakasam
Publikováno v:
ACS Omega
ACS Omega, Vol 6, Iss 15, Pp 10150-10159 (2021)
ACS Omega, Vol 6, Iss 15, Pp 10150-10159 (2021)
Surface-enhanced Raman spectroscopy (SERS) is conducted from single aerosol particles held in a linear electrodynamic quadrupole trap. SERS measurements from two representative types of ambient aerosol particles, semi-liquid and solid aerosols, are d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c315d846609b22c92e1466d9755194af
http://europepmc.org/articles/PMC8153665
http://europepmc.org/articles/PMC8153665
Autor:
Vasanthi Sivaprakasam, Di Lin, Michael K. Yetzbacher, Heath E. Gemar, Joel M. Portier, Abbie T. Watnik
Publikováno v:
Optics Express. 31:5443
We have developed a multi-spectral SWIR lidar system capable of measuring simultaneous spatial-spectral information for imaging and spectral discrimination through partial obscurations. We employ objects in the presence and absence of a series of obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ddaf8764ecf04a9ebd7c6f5e544f0f0
https://doi.org/10.1364/oe.477499
https://doi.org/10.1364/oe.477499
Autor:
Steven C. Hill, Yong-Le Pan, Benoît Crouzy, Brian Damit, Anne E. Perring, Bernard Clot, David Topping, Martin Gallagher, Vasanthi Sivaprakasam, Ofir Shoshanim, Ian Crawford, Johannes Schneider, David C. Doughty, Maria A. Zawadowicz, J. Alex Huffman, Fiona Tummon, Nicole J. Savage
Publikováno v:
Huffman, J A, Perring, A E, Savage, N J, Clot, B, Crouzy, B, Tummon, F, Shoshanim, O, Damit, B, Schneider, J, Sivaprakasam, V, Zawadowicz, M A, Crawford, I, Gallagher, M, Topping, D, Doughty, D C, Hill, S C & Pan, Y 2019, ' Real-time sensing of bioaerosols: Review and current perspectives ', Aerosol Science and Technology, pp. 1-56 . https://doi.org/10.1080/02786826.2019.1664724
Detection of bioaerosols, or primary biological aerosol particles (PBAPs), has become increasingly important for a wide variety of research communities and scientific questions. In particular, real-time (RT) techniques for autonomous, online detectio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::698f23ef0891f36810d4d3e70ce4044a
https://doi.org/10.1080/02786826.2019.1664724
https://doi.org/10.1080/02786826.2019.1664724
Publikováno v:
OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES).
We present initial results from a prototype hyperspectral imaging and ranging system. The system utilizes a high-speed imaging detector, enabling source modulation without stabilization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c773fdb93d3ebe4345276bd2ee46b05d
https://doi.org/10.1364/hise.2021.hf2i.3
https://doi.org/10.1364/hise.2021.hf2i.3
Publikováno v:
Optical Sensors and Sensing Congress.
A multi-spectral supercontinuum based lidar system is developed and characterized to provide higher classification and detection of objects in obscured environments with potential applications for forest canopy mapping, pollution monitoring of waterw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8fb8f09454aa9b0dc9defbb1752ab85
https://doi.org/10.1364/lacsea.2020.lm4a.5
https://doi.org/10.1364/lacsea.2020.lm4a.5
Autor:
Vasanthi Sivaprakasam
Publikováno v:
Conference on Lasers and Electro-Optics.
A SERS technique is developed for potential in situ detection, chemical identification and dynamics study of individual aerosol particles. Our technique involves generating and trapping aerosols containing analyte molecules and metallic nanoparticles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d135130f6c9bf624d82d7d9c4a91b807
https://doi.org/10.1364/cleo_at.2020.atu4i.5
https://doi.org/10.1364/cleo_at.2020.atu4i.5
Publikováno v:
The Journal of Physical Chemistry C. 121:22326-22334
We report the observation and measurement of surface enhanced Raman spectroscopy (SERS) signatures from individual suspended aerosol particles. To our knowledge, this is the first report of SERS from single suspended particles formed from droplets co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3797ba1e9cda69113099ec3fb3335499
https://doi.org/10.1021/acs.jpcc.7b05310
https://doi.org/10.1021/acs.jpcc.7b05310
Autor:
Vasanthi Sivaprakasam
Publikováno v:
Optical Sensors and Sensing Congress (ES, FTS, HISE, Sensors).
Spectroscopic studies of individual aerosol particles using Surface Enhanced Raman, polarized elastic light scattering and fluorescence measurements for broad classification and potential chemical identification of aerosols and their chemical dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f7d20bae7cd86fdcbfb60896170bc6e
https://doi.org/10.1364/es.2019.ew4a.1
https://doi.org/10.1364/es.2019.ew4a.1
Publikováno v:
Optics in the Life Sciences Congress.
We describe a linear electrodynamic quadrupole trap to interrogate particles in a controlled environment. Single or multiple particles ranging in size from 0.5 um to above 100 um can be held indefinitely for study.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6a02349441e92338b4ac2daf525925f
https://doi.org/10.1364/ota.2017.otm3e.2
https://doi.org/10.1364/ota.2017.otm3e.2