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Ileana Pazos (Fed)

Research Chemist

Dr. Ileana M. Pazos is a Research Chemist in the Physical Measurement Laboratory at the National Institute of Standards and Technology in Gaithersburg, Maryland. Her focus is in supporting various applications in industrial ionizing radiation-processing through the High-Dose Dosimetry program. She is also involved in the Photonic Dosimetry project that aims to develop micron-scaled radiation sensors.


Pazos, I.M.; Ahmed, I.; León Berríos, M.I.; Gai, F. 2015. Sensing pH via p-Cyanophenylalanine Fluorescence: Application to Determine Peptide pKa and Membrane-Penetration Kinetics. Anal. Biochem; 483; 21-26.

Chuntonov, L., Pazos, I.M.; Ma, J.; Gai, F. 2015. Kinetics of Exchange Between Zero-, One-, and Two-Hydrogen Bonded States of Methyl and Ethyl Acetate in Methanol. J. Phys. Chem. B; 119; 4512-4520.

Ma, J.; Pazos, I.M.; Zhang, W.; Culik, R.M.; Gai, F. 2015. Site-Specific Infrared Probes of Proteins. Ann. Rev. Phys. Chem.; 66; 357-377.

Pazos, I.M.; Ghosh, A.; Tucker, M. J.; Gai, F. 2014. Ester Carbonyl Vibration as a Sensitive Probe of Protein Local Electric Field. Angew. Chem. Int. Ed.; 53; 6080-6084. 

Ma, J.; Pazos, I.M.; Gai, F. 2014. Microscopic Insights into the Protein-Stabilizing Effect of Trimethylamine N-oxide (TMAO). Proc. the Nat. Acad. of Sci. U.S.A.; 111; 8476-8481. 

Culik, R.M.; Abaskharon, R.M.; Pazos, I.M.; Gai, F. 2014. Experimental Validation of the Role of Trifluoroethanol as a Nano-Crowder. J. Phys. Chem. B; 118; 11455-11461.

Pazos, I.M.; Roesch, R.M.; Gai, F. 2013. Quenching of p-Cyanophenylalanine Fluorescence by Various Anions. Chem. Phys. Letts. 563; 93-96. 

Pazos, I.M.; Gai, F. 2012. Solute's Perspective on How Trimethylamine Oxide, Urea, and Guanidine Hydrochloride Affect Water's Hydrogen Bonding Ability. J. Phys. Chem. B; 116; 12473-12478.

Schultz, Z. D.; Pazos, I.M.; McNeil-Watson, F.K.; Lewis, E.N.; Levin, I.W. 2009. Magnesium-Induced Lipid Bilayer Microdomain Reorganizations: Implications for Membrane Fusion. J. Phys. Chem. B; 113; 9932-9941. 

Struganova, I.; Wallner, A. S.; Pazos, I.; 2008. Two-Dimensional 1H NMR Spectroscopy of 1,1′-Diethyl-2,2′-Cyanine Iodide in Water and Methanol. J. Mol. Struc. 875; 447-455. 

Lufaso, M.W.; Vanderah, T. A.; Pazos, I.M.; Levin, I.; Roth, R. S.; Nino, J.C.; Provenzano, V.; Schenck, P.K. 2006. Phase Formation, Crystal Chemistry, and Properties in the System Bi2O3-Fe2O3-Nb2O5. J. Sol. State Chem. 179; 3900-3910.


On-chip Silicon Photonics Radiation Sensors

Nikolai N. Klimov, Zeeshan Ahmed, Lonnie T. Cumberland, Ileana M. Pazos, Ronald E. Tosh, Ryan P. Fitzgerald
We have examined the impact of cobalt-60-ray radiation up to 1 megagray (MGy) absorbed dose on silicon photonic devices. We do not find any systematic impact

Assessing Radiation Hardness of Silicon Photonic Sensors.

Zeeshan Ahmed, Lonnie T. Cumberland, Ronald E. Tosh, Nikolai N. Klimov, Ileana M. Pazos, Ryan P. Fitzgerald
In recent years silicon photonic platforms have undergone rapid maturation enabling not only optical communication but complex scientific experiments ranging
Created October 3, 2019, Updated December 8, 2022