phone: (787) 832-4040 ext. 3450
email: samuel.hernandez3@upr.edu , sp.hernandez.uprm@gmail.com
office: Q-129
website: http://academic.uprm.edu/ccsde
Lab: Q-048/042/040
RESEARCH INTERESTS
Physical Chemistry, Vibrational Spectroscopy, Chemometrics, Machine Learning, and Artificial Intelligence Applications to Vibrational Spectroscopy, CHEM-BIO Threats Detection, Applications of Spectroscopy Defense & Security, and Pharma & Biotech

KEYWORDS
Quantum cascade laser (QCL), mid-infrared (MIR), highly energetic materials (HEMs), chemometrics, principal component Analysis (PCA), Raman spectroscopy, Surface-Enhanced Raman Spectroscopy (SERS), standoff Raman and Infrared detection, X-ray diffraction (XRD), explosives, chemical, and biological threat agents
 
EDUCATIONAL BACKGROUND
1986                      Ph.D.                     Physical Chemistry, Johns Hopkins University, Baltimore, MD
1982                      M.A.                      Chemistry, Johns Hopkins University Baltimore, MD
1980                      M.S.                      Chemistry, University of Puerto Rico, Mayagüez, PR
1974                      B.S.                        Chemistry, University of Puerto Rico, Mayagüez, PR

PROFESSIONAL EXPERIENCE: Academic Rank: Professor; Service on Faculty: 40 years (35 after tenure)
 
Recognitions
2015-Present     Member, Board of Directors, PR Institute of Photonics
2012-14                Editor-in-Chief, Sensing and Imaging: An International Journal
2012                       Member, Editorial Board, Hindawi Spectroscopy: An International Journal
2007-2014            Member, Editorial Board, Sensing, and Imaging: An International Journal
2003 2005            Who’s Who among Teachers Swarthmore Who’s Who  
2002                       Who’s Who among Profs. American Univ., Multi-Year Award, Nominated by Students
1993, 1997         Who’s Who among Profs. American Universities, Nominated by Students          
1989                      Armed forces Institute of Pathology, Summer Faculty Fellow Walter Reed, Washington, DC.
1987                       University Puerto Rico-Rio Piedras, Dept. Physics, Summer Res. Fellow, San Juan PR
1986                       NASA/ASEE Summer Faculty Res. Fellow, Goddard Space Flight CTR, Greenbelt, MD
1980-1982            National Hispanic Fellow; NSF Pre-Doctoral Fellow; Ford Foundation Fellow      
1976                       First Prize, Junior Technical Meeting
1974                       BS, University of PR-Mayagüez, Commencement, Magna cum Laude
1974                       BS, UPRM Commencement, Antoine Lavoisier Medal to Most Distinguished Chemistry Student
1974                       Who’s Who Among Students in American Universities and Colleges
1974                       Nominated for Phi Kappa Phi, member since 1974
1974                       ACS Recognition to Best Chemistry Students among Universities in P.R.
1970-1974          Dean’s Honor Roll

GRAD. STUDENTS, POST-DOCTORAL FELLOWS & VISITING SCHOLARS
Visiting Scholars: 5;    Post-Doctoral Fellows: 5
Ph.D. Granted: 19; Ph.D. Candidates: 13
MS Granted: 48; MS Candidates: 10

RESEARCH SUPPORT TOTAL: $23,524,060: Research Projects: 38; Completed: 32; On-Going: 6
PATENTS AND INVENTION DISCLOSURES: Awarded (3); Pending (3)
PUBLICATIONS (218): Chapters in Books (27); Peer-Reviewed Papers (191):
SELECTED PUBLICATIONS
1.       Villanueva-López V., Colón-Mercado A.M., Vázquez-Vélez K.M., Castro-Suarez J.R., Rivera, Hernández-Rivera S.P. (2022) Trace Detection of C-4 on Aluminum Using Mid-Infrared Reflection–Absorption Quantum Cascade Laser Spectroscopy. In: Rocha Á., Fajardo-Toro C.H., Rodríguez J.M.R. (eds) Developments and Advances in Defense and Security. Smart Innovation, Systems and Technologies, vol 255. Springer, Singapore. https://doi.org/10.1007/978-981-16-4884-7_18   https://link.springer.com/chapter/10.1007/978-981-16-4884-7_18.
2.       Villanueva-López, V.; Pacheco-Londoño, L. C.; Villarreal-González, R.; Castro-Suarez, J. R.; Román-Ospino, A.; Ortiz-Rivera, W.; Galán-Freyle, N. J.; Hernandez-Rivera, S. P. API Content and Blend Uniformity Using Quantum Cascade Laser Spectroscopy Coupled with Multivariate Analysis. Pharmaceutics 2021, 13 (7), 985. https://doi.org/10.3390/pharmaceutics13070985.
3.       Colón-Mercado, A.M., Vázquez-Vélez, K.M., Colón-González, F.M., Castro-Suárez, J.R., Galán-Freyle, N.J., Villanueva-López, V., Caballero-Agosto, E., Pacheco-Londoño, L.C., and Hernández-Rivera, S.P., Mid Infrared Quantum Cascade Laser Reflection – Absorption Spectroscopy at the Grazing Angle Incidence, Advances in Optics: Reviews, Vol. 5, Yurish, S.Y., ed., International Frequency Sensor Association (IFSA) Publishing, S. L., 2021.
4.       Colón-Mercado, A. M.; Vázquez-Vélez, K. M.; Caballero-Agosto, E.; Villanueva-López, V.; Infante-Castillo, R.; Hernández-Rivera, S. P. Detection of High Explosives Samples Deposited on Reflective and Matte Substrates Using Mid-Infrared Laser Spectroscopy at the Grazing Angle of Incidence Assisted by Multivariate Analysis. Optical Engineering 2020, 59 (09), 1. https://doi.org/10.1117/1.OE.59.9.092011.
5.       Colón-González, F.M., Perez-Almodovar, L.A., Barreto-Pérez, M., Vargas-Alers, G.L., Santos-Rolón, J.M., Hernández-Rivera, S.P. “Raman Scattering Detection of High Explosives on Human Hair”. Opt. Eng., 2020, 59(10), 107103-1-15.
6.       Galán-Freyle, N.J., Ospina-Castro, M.L., Medina-González, A.R., Villarreal-González, R., Hernández-Rivera, S.P., Pacheco-Londoño, L.C. “Artificial Intelligence Assisted Mid-Infrared Laser Spectroscopy In Situ Detection of Petroleum in Soils”, Appl. Sci. 2020, 10, 1319.
7.       Galán-Freyle, N.J., Pacheco-Londoño, L.C., Figueroa-Navedo, A.M. Ortiz-Rivera, W., Castro-Suarez, J.R., and Hernández-Rivera, S.P. “Modulated-laser source induction system for remote detection of infrared emissions of high explosives using laser-induced thermal emission,” Opt. Eng., 2020, 59(9): 092008-1-10.
8.       Pacheco-Londoño. L.C., Warren, E., Galán-Freyle, N.J., Villarreal-González, R., Aparicio-Bolaño, J.A., Ospina-Castro, M.L., Shih, W.C., Hernández-Rivera, S.P., “Mid-infrared Laser Spectroscopy Detection and Quantification of Explosives in Soils Using Multivariate Analysis and Artificial Intelligence,” 2020, App. Sci. 10(6):1319, DOI: 10.3390/app10041319.
9.       Ruiz-Caballero, J. L.; Blanco-Riveiro, L. A.; Ramirez-Marrero, I. A.; Perez-Almodovar, L. A.; Colon-Mercado, A. M.; Castro-Suarez, J. R.; Pacheco-Londoño, L. C.; Hernandez-Rivera, S. P. Enhanced RDX Detection Studies on Various Types of Substrates via Tunable Quantum Cascade Laser Spectrometer Coupled with Grazing Angle Probe. IOP Conf Ser Mater Sci Eng 2019, 519 (1), 012007. https://doi.org/10.1088/1757-899X/519/1/012007.
10.   Pacheco-Londoño, L. C.; Aparicio-Bolaño, J. A.; Galán-Freyle, N. J.; Román-Ospino, A. D.; Ruiz-Caballero, J. L.; Hernandez, S. P. EXPRESS: Classical Least Squares-Assisted MIR Laser Spectroscopy Detection of High Explosives on Fabrics. Appl. Spectrosc. 2018, 000370281878041. https://doi.org/10.1177/0003702818780414.

Patents & Invention Disclosures:
1.       Patent: U.S. 16/184,9820 8/13/2019: “Grazing Angle Probe Mount for Quantum Cascade Lasers.” Inventors: Samuel P. Hernández-Rivera and Leonardo C. Pacheco-Londoño.
2.       Patent: US 10,379,033 B1 08/13/2019 “Coupling of thin layer chromatography (TLC) to quantum cascade laser spectroscopy (QCLS) for qualitative and quantitative field analyses of explosives and other pollutants.” Inventors: Samuel P. Hernández-Rivera; and John R. Castro-Suarez.
3.       Patent: US 8,932,384 B1, 01/13/2015 “Surface Enhanced Raman Spectroscopy Gold Nanorods substrates for the detection of 2,4,6-trinitrotoluene and 3,5-dinitro-4-methylbenzoic acid explosives.” Inventors: O.M. Primera-Pedrozo.; A.N. Chamoun-Emanuelli.; W. Medina-Ramos.; and S.P. Hernández-Rivera.
4.       Invention Disclosure (2022): “LabVIEW Virtual Instrument System for Spectroscopic Data Acquisition and Processing”. Inventors: Vladimir Villanueva-López, Leonardo C. Pacheco-Londoño, and Samuel P. Hernández-Rivera.
5.       Invention Disclosure (2014): “Hydrogen sulfide (H2S) species as an integrated method for inhibiting amyloid fibril formation in Lysozyme and Insulin”. Inventors: Juan López-Garriga; Igor K. Lednev; Samuel P. Hernández-Rivera; Manuel F. Rosario-Alomar; Tatiana Quiñones-Ruiz.
6.       Patent: Application number: 61/471,478 of April 4, 2011. “Synthesis of Ag, Cu, Pt and Au Nanostructures for Continuous Deposits on Surfaces by Micro-Patterned Laser Image Formation.” Inventors: L.C. Pacheco-Londoño, J.A. Aparicio-Bolaños; and S.P. Hernández-Rivera