John N Porter
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Explore the profile of John N Porter including associated specialties, affiliations and a list of published articles.
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10
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20
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Recent Articles
1.
Misra A, Rowley S, Zhou J, Acosta-Maeda T, Dasilveira L, Ravizza G, et al.
Sci Rep
. 2022 Jun;
12(1):10164.
PMID: 35715549
The "Search for life", which may be extinct or extant on other planetary bodies is one of the major goals of NASA planetary exploration missions. Finding such evidence of biological...
2.
Misra A, Acosta-Maeda T, Zhou J, Egan M, Dasilveira L, Porter J, et al.
Appl Spectrosc
. 2021 Jul;
75(11):1427-1436.
PMID: 34309445
We have developed a compact instrument called the "COmpact COlor BIofinder", or CoCoBi, for the standoff detection of biological materials and organics with polyaromatic hydrocarbons (PAHs) using a nondestructive approach...
3.
Sharma S, Howe B, Misra A, Rognstad M, Porter J, Acosta-Maeda T, et al.
Appl Spectrosc
. 2021 Feb;
75(6):739-746.
PMID: 33635100
We describe the fabrication of an underwater time-gated standoff Raman sensor, consisting of a custom Raman spectrometer, custom scanner, and commercial diode-pumped pulsed 532 nm laser all located inside a...
4.
Sandford M, Misra A, Acosta-Maeda T, Sharma S, Porter J, Egan M, et al.
Appl Spectrosc
. 2020 Jul;
75(3):299-306.
PMID: 32613858
Raman spectroscopy is a technique that can detect and characterize a range of molecular compounds such as water, water ice, water-bearing minerals, and organics of particular interest to planetary science....
5.
Berlanga G, Acosta-Maeda T, Sharma S, Porter J, Dera P, Shelton H, et al.
Appl Opt
. 2019 Dec;
58(32):8971-8980.
PMID: 31873679
We report the remote Raman spectra of natural igneous, metamorphic, and sedimentary rock samples at a standoff distance of 5 m. High-quality remote Raman spectra of unprepared rocks are necessary...
6.
Misra A, Acosta-Maeda T, Porter J, Egan M, Sandford M, Oyama T, et al.
Appl Spectrosc
. 2019 Sep;
74(2):233-240.
PMID: 31517522
The detection and identification of materials from a distance is highly desirable for applications where accessibility is limited or there are safety concerns. Raman spectroscopy can be performed remotely and...
7.
Misra A, Acosta-Maeda T, Porter J, Berlanga G, Muchow D, Sharma S, et al.
Appl Spectrosc
. 2018 Oct;
73(3):320-328.
PMID: 30347998
The remote detection of chemicals using remote Raman spectroscopy and laser-induced breakdown spectroscopy (LIBS) is highly desirable for homeland security and NASA planetary exploration programs. We recently demonstrated Raman spectra...
8.
Acosta-Maeda T, Misra A, Porter J, Bates D, Sharma S
Appl Spectrosc
. 2016 Sep;
71(5):1025-1038.
PMID: 27645726
We determined Raman cross-sections of various organic liquids and inorganic polyatomic ions in aqueous solutions with a 532 nm pulsed laser using remote Raman systems developed at the University of...
9.
Misra A, Sharma S, Acosta T, Porter J, Bates D
Appl Spectrosc
. 2012 Nov;
66(11):1279-85.
PMID: 23146183
The capability to analyze and detect the composition of distant samples (minerals, organics, and chemicals) in real time is of interest for various fields including detecting explosives, geological surveying, and...
10.
Porter J, Cao G
Opt Lett
. 2009 Aug;
34(16):2384-6.
PMID: 19684790
Upper-level wind fields are obtained by tracking the motion of cloud features as seen in calibrated ground-based stereo cameras. By tracking many cloud features, it is possible to obtain horizontal...