Solomon Bililign


Solomon Bililign
Google Scholar

College of Science and Technology


B.S.Physics / Addis Ababa University
M.S.Physics / Addis Ababa University
Ph.D.Physics / University of Iowa


Dr. Solomon Bililign joined NCA&T in 1993. He did his undergraduate and MS work in Physics at Addis Ababa University, Ethiopia, PhD at the University of Iowa and postdoctoral research fellowship at the University of Utah Department of Chemistry. His area of specialization includes Experimental and Theoretical Atomic, Molecular and Optical Physics /and Chemical Physics. He built research capacity in chemical physics and atmospheric sciences at NCA&T with a combined federal grant of over 19 million. He served as the Department Chair. In 2010 he was the recipient of the Presidential Award for Excellence in Science, mathematics and Engineering. He has received the senior researcher award for NCAT in 2002 and 2017, teaching excellence award in 2006, 2015 and 2018.

Research Interests

Research in Bililign group involves the use of Spectroscopic Techniques and theoretical methods for atmospheric applications: The focus is measuring in the lab and the field the optical and physio-chemical properties of Biomass Burning (BB) aerosols and understanding the role of BB Aerosols on climate, regional weather, air quality and health. We investigate
i) How relative humidity (RH) photochemical aging morphology and burn conditions influence the size distribution, optical properties and chemical properties of BB aerosols produced from sub Saharan Africa Biomass Fuels. 2) Toxicity of Complex Aerosols from Biomass Burning.

External URL


Recent Publications

  • Solomon Bililign and P.D.Klieber (1990)Reaction dynamics of Na*(4 2 P)+ H 2: Effect of reactant orbital alignment on reactivity and product rotational state distribution, 42(11) 6938 Physical Review A.  10.1103/physreva.42.6938


  • (1991). (Metal–metal and metal–hydrogen reactive transition states). 91, pp. 97–110. Faraday Discussions of the Chemical Society https://doi.org/10.1039/DC9919100097


  • Solomon Bililign, (1991). (Reactive Collision Dynamics of SODIUM*(4DOUBLETP (J))+ Hydrogen). PhD Dissertation https://www.proquest.com/openview/9ee2b2bc4faf44ebf21139574aadd1d0/1?pq-origsite=gscholar&cbl=18750&diss=y


  • Solomon Bililign, PD Kleiber, (1992). (Nascent rotational quantum state distribution of NaH (NaD) from the reaction of Na*(4 2 P) with H2, D2, and HD). (1) 96, pp. 213–217. The Journal of chemical physics https://doi.org/10.1063/1.462507
  • Solomon Bililign, PD Kleiber, WR Kearney, KM Sando, (1992). (Reactive collision dynamics of Na*(4 2 P)+ H2 and HD: Experiment and theory). (1) 96, pp. 218–229. The Journal of chemical physics.https://doi.org/10.1063/1.462508


  • PD Kleiber, TH Wong, Solomon Bililign, (1993). (Collisional energy transfer in Na (4 p–3 d)–He, H2 collisions). (2) 98, pp. 1101–1104. The Journal of chemical physics.https://doi.org/10.1063/1.464333
  • Ingvar Wallace, David Funk, John Kaup, Solomon Bililign, Michael Morse, William Breckenridge, (1993). (Half-collision studies of singlet-to-triplet energy transfer: action spectroscopy and predissociation dynamics of electronically excited Cd H2 and Cd D2 complexes).Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); https://doi.org/10.1117/12.143091


  • Solomon Bililign, Michael Morse, WH Breckenridge, (1993). (Predissociation lifetimes of vibrational levels of the excited 1 B 1 (K a’= 0) electronic states of Cd⋅ H2 and Cd⋅ D2 complexes). (3) 98, pp. 2115–2122. The Journal of chemical physics.https://doi.org/10.1063/1.464189
  • Solomon Bililign, Maciej Gutowski, Jack Simons, WH Breckenridge, (1993). (Singlet-to-triplet energy transfer via 1Pi1/3Sigma+ 1 curve crossings in group 2 and 12 metal–atom/rare-gas systems). (5) 99, pp. 3815–3822. The Journal of chemical physics.https://doi.org/10.1063/1.466128
  • Solomon Bililign, Maciej Gutowski, Jack Simons, WH Breckenridge, (1994). (Potential energy curves of M (np 2 P)⋅ RG (2pi) excited states and M+⋅ RG ground states (M= Li, Na; RG= He, Ne)). (11) 100, pp. 8212–8218. The Journal of chemical physics.https://doi.org/10.1063/1.466764
  • Solomon Bililign, John Kaup, WH Breckenridge, (1995). (Full-and half-collision studies of metal atom singlet-to-triplet deactivation induced by rare-gas atoms). (20) 99, pp. 7878–7890. The Journal of Physical Chemistry. https://doi.org/10.1021/j100020a009
  • I Wallace, Solomon Bililign, David Funk, John Kaup, Michael Morse, William Breckenridge (1995). (Half-Collision Studies of Singlet-to-Triplet Energy Transfer Within Electronically Excited Cd@H2 and Cd@D2 Complexes). In B. Liu and A. Wagner , (The Chemical Dynamics and Kinetics of Small Radical) Part II, World Scientific.
  • Ingvar Wallace, Solomon Bililign, David Funk, John Kaup, MD Morse, WH Breckenridge, (1995). (HALF-COLLISION STUDIES OF SINGLET-TO-TRIPLET ENERGY TRANSFER WITHIN ELECTRONICALLY EXCITED Cd H 2 AND Cd D 2 COMPLEXES). pp. 536–572 


  • JT Bahns, L Lynds, WC Stwalley, V Simmons, T Robinson, Solomon Bililign, (1997). (Airborne-mercury detection by resonant UV laser pumping). (10) 22, pp. 727–729. Optics letters.https://doi.org/10.1364/OL.22.000727
  • Solomon Bililign, Liping Liu, CS Feigerle, John Miller, (1997). (Metal ion chemistry in clusters initiated by ionization/dissociation of organometallic precursors). (25) 101, pp. 4569–4573. The Journal of Physical Chemistry A. https://doi.org/10.1021/jp970476d
  • Solomon Bililign, CS Feigerle, John Miller, (1998). (Inverse laser ablation: formation and chemistry of nanoparticles from gaseous precursors). 127, pp. 344–349. Applied surface science.https://doi.org/10.1016/S0169-4332(97)00653-3
  • Solomon Bililign, CS Feigerle, John Miller, M Velegrakis, (1998). (Nonstatistical bond breaking in the multiphoton ionization/dissociation of [Fe (CO) 5] m Ar n clusters). (15) 108, pp. 6312–6319. The Journal of chemical physics.https://doi.org/10.1063/1.476038
  • Solomon Bililign, Brian Hattaway, Neri Geum, Gwang-Hi Jeung, (2000). (Energy Transfer in Li*(3p)- H2 Collisions). (42) 104, pp. 9454–9458. The Journal of Physical Chemistry A. https://doi.org/10.1021/jp0020992
  • CS Feigerle, Solomon Bililign, John Miller, (2000). (Nanochemistry–chemical reactions of iron and benzene within molecular clusters). (2) 2, pp. 147–155. Journal of Nanoparticle Research.https://doi.org/10.1023/A:1010034122603
  • Solomon Bililign, Brian Hattaway, Tito Robinson, Gwang-Hi Jeung, (2001). (Far-wing scattering studies on the reaction Li*(2p, 3p)+ H 2→ LiH (v ″= 1, 2, J ″)+ H). (16) 114, pp. 7052–7058. The Journal of Chemical Physics.https://doi.org/10.1063/1.1359774
  • Solomon Bililign, Brian Hattaway, Gwang-Hi Jeung, (2002). (Nonradiative Energy Transfer in Li*(3p)- CH4 Collisions). (2) 106, pp. 222–227. The Journal of Physical Chemistry A. https://doi.org/10.1021/jp012616w
  • Brian Hattaway, Solomon Bililign, Lionel Uhl, Vincent Ledentu, Gwang-Hi Jeung, (2004). (Energy transfer in Li (4p)+(Ar, H 2, CH 4) collisions). (4) 120, pp. 1739–1745. The Journal of chemical physics.https://doi.org/10.1063/1.1634557
  • James Swindell, II, Benjamin McCarter, Vivek Komaragiri, Solomon Bililign, (2004). (Quenching of Li (3P) by CH 4, C 2 H 4, C 2 H 6, C 3 H 8). (1) 305, pp. 299–305. Chemical physics.https://doi.org/10.1016/j.chemphys.2004.06.068
  • Vivek Komaragiri, Benjamin McCarter, Solomon Bililign, Denis Hagebaum-Reignier, Vincent Ledentu, Gwang-Hi Jeung, (2005). (Experimental and theoretical studies of the quenching of Li (3 p, 4 p) by N 2). (2) 123, pp. 024303. The Journal of chemical physics.10.1063/1.1993588
  • Kevin Wedderburn, Solomon Bililign, Mel Levy, Robert Gdanitz, (2006). (Geometries and stabilities of 3d-transition metal-cation benzene complexes, M+ Bz n (M= Sc,Cu, n= 1, 2)). (2) 326, pp. 600-604. Chemical physics.10.1016/j.chemphys.2006.03.025
  • Solomon Bililign, Yuh Lang Lin, Lyubov Kurkalova, Yevgenly Rastigeyev, Keith Schimmel, Sunyoung , Robert Davis, Shamsuddin Ilias, Yaw Kyei, Godfrey Uzochukwu (2009). (Climate and water resources: a challenge to integrated science/social policy formulation). (2) Summer 2009, pp. 63-72. Convergence Review.
  • Natenael Semmineh, Solomon Bililign, Denis Hagebaum-Reignier, Gwang-Hi Jeung, (2009). (Experimental studies of collisions of excited Li (4p) atoms with C 2 H 4, C 2 H 6, C 3 H 8 and theoretical interpretation of the Li-C 2 H 4 system). (2) 355, pp. 157-163. Chemical Physics. https://doi.org/10.1016/j.chemphys.2008.12.007
  • Marc Fiddler, Israel Begashaw, Matthew Mickens, Michael Collingwood, Zerihun Assefa, Solomon Bililign, (2009). (Laser spectroscopy for atmospheric and environmental sensing). (12) 9, pp. 10447-10512. Sensors. https://doi.org/10.3390/s91210447
  • Israel Begashaw, Marc Fiddler, Solomon Bililign, Steven Brown, (2011). (Measurement of the Fourth O- H Overtone Absorption Cross Section in Acetic Acid Using Cavity Ring-Down Spectroscopy). (5) 115, pp. 753-761. The Journal of Physical Chemistry A https://doi.org/10.1021/jp1087338


  • Mohammed SAYEMUZZAMAN, Keith Schimmel, Michael PORTER, Solomon Bililign, Ademe Mekonnen, Yuh Lang Lin, Yevgenly Rastigeyev, Jing Zhang, Kendra WHITEHEAD, Candice YOUNG (2012). (CLIMATE MISCONCEPTION REMEDIATION WITH 3-D VISUALIZATIONS). 2012 GSA Annual Meeting in Charlotte.

    • Solomon Bililign, Yuh Lang Lin, Robert Davis, Shamsuddin Ilias, Lyubov Kurkalova, Yaw Kyei, Yevgenly Rastigeyev, Godfrey Uzochukwu, Sunyoung Bae, (2012). (Effects of global warming on North Carolina). (2) 3, pp. 52-70. International Journal of Climate Change: Impacts and Responses. https://doi.org/10.18848/1835-7156/CGP/v03i02/37108  

  • Keith Schimmel, Muktha Jost, Shawn Watlington, Terrie Mcmanus, Solomon Bililign, Terry Worrell, Yuh Lang Lin (2012). (Middle and High School Teacher Professional Development Through University Research Experiences and Curriculum Development). American Society for Engineering Education.
  • MC Barth, AK Cochran, MN Fiddler, JM Roberts, Solomon Bililign, (2013). (Numerical modeling of cloud chemistry effects on isocyanic acid (HNCO)). (15) 118, pp. 8688 to 8701. Journal of Geophysical Research: Atmospheres. 
  • Solomon Bililign, (2013). (The Need for Interdisciplinary Research and Education for Sustainable Human Development to Deal with Global Challenges). (1) 1, pp. 8. International Journal of African Development.https://scholarworks.wmich.edu/ijad/vol1/iss1/8
  • Sujeeta Singh, Marc Fiddler, Damon Smith, Solomon Bililign, (2014). (Error analysis and uncertainty in the determination of aerosol optical properties using cavity ring-down spectroscopy, integrating nephelometry, and the extinction-minus-scattering method). (12) 48, pp. 1345 to 1359. Aerosol Science and Technologyhttps://doi.org/10.1080/02786826.2014.984062
  • Solomon Bililign, Keith Schimmel, John Roop, Gregory Meyerson (2015). (A university without departments and colleges -A new structure to strengthen disciplinary and interdisciplinary education and research). (3) 11, International Journal for Innovation Education and Research.
  • Sujeeta Singh, Marc Fiddler, Solomon Bililign, (2016). (Measurement of size-dependent single scattering albedo of fresh biomass burning aerosols using the extinction-minus-scattering technique with a combination of cavity ring-down spectroscopy and nephelometry). (21) 16, pp. 13491 to 13507. Atmospheric Chemistry and Physics https://doi.org/10.5194/acp-16-13491-2016


  • Samin Poudel, Damon Smith, Marc Fiddler, Kenneth Flurchick, Solomon Bililign, (2017). (Optical Properties of Biomass Burning Aerosols: Comparison of Experimental Measurements and T-matrix Calculations.). (11) 8, pp. 228. Atmosphere- Special Issue "Aerosol Optical Properties: Models, Methods & Measurements" https://doi.org/10.3390/atmos8110228
  • Ben Lee, Felipe Lopez-Hilfike, Patrick Veres, Erin McDuffie, Dorothy Fibiger, Tamara Sparks, Marc Fiddler, Jaime Greene, Carlena Ebben, Jason Schroder, Pedro Campuzano-Jost, Siddharth Iyer, Emma D Ambro, Siegfried Schobesberger, Steven Brown, Paul Wooldridge, Ronald Cohen, Solomon Bililign, Jose Jimenez, Theo Kurten, Andrew Weinheimer, Lyatt Jaegle, Joel Thornton, (2018). (Airborne observations of reactive inorganic chlorine and bromine species in the exhaust of coal-fired power plants). (19) 123, pp. 11,225-11,237. Journal of Geophysical Research: Atmospheres 
  • Viral Shah, Lyatt Jaegle, Felipe Lopez-Hilfiker, Ben Lee, Joel Thornton, Jason Schroder, Pedro Campuzano-Jost, Jose Jimenez, Hongyu Guo, Amy Sullivan, Rodney Weber, Jaime Green, Marc Fiddler, Solomon Bililign, Steven Brown, (2018). (Chemical Feedbacks Suppress the Wintertime Response of Atmospheric Particulate Sulfate and Nitrate to Emissions Reductions over the Eastern U.S.). (32) 115, pp. 8110 to 8115. Proceedings of the National Academy of Sciences 


  • Damon Smith, Marc Fiddler, Keanneth Saxton, Solomon Bililign, (2018). (Construction and Characterization of an Indoor Smog Chamber for the Measurement of the Optical and Physicochemical Properties of Aging Biomass Burning Aerosols Native to sub-Saharan Africa). (amt-2018-43) Atmospheric Measurement Techniques -Discussions.https://doi.org/10.5194/amt-2018-43


  • Ben Lee, Felipe Lopez-Hilfiker, Patrick Veres, Erin McDuffie, Dorothy Fibiger, Tamara Sparks , Carlena Ebben, Jaime Green, Jaime Green, Jason Schroder, Pedro Campuzano-Jost, Siddharth Iyer, Emma D'Ambro, Siegfried Schobesberger, Steven Brown, Paul Wooldridge, Ronald Cohen, Solomon Bililign, Jose Jimenez, Theo Kurten, Andrew Weinheimer, Lyatt Jaegle, Joel Thornton, Marc Fiddler, (2018). (Flight deployment of a high-resolution time-of-flight chemical ionization mass spectrometer: observations of reactive halogen and nitrogen oxide species). (14) 123, pp. 7670 to 7686. Journal of Geophysical Research: Atmospheres. 
  • Dorothy Fibige, Erin McDuffie, William Dube, Ken Aikin, Felipe Lopez-Hilfiker, Ben Lee, Jaime Green, Marc Fiddler, John Holloway, Carly Ebben, Tamara Sparks, Paul Wooldridge, Andrew Weinheimer, Denise Montzka, Eric Apel, Rebecca Hornbrook, Alan Hills, Nicola Blake, Josh DiGangi, Glenn Wolfe, Thomas Hanisco, Solomon Bililign, Ronald Cohen, Joel Thornton, Steven Brown, (2018). (Wintertime overnight Nox removal in a coal-fired power plant plume and its implications for understanding winter Nox processing). (2) 123, pp. 1412 to 1425. Journal of Geophysical Research: Atmospheres.https://doi.org/10.1002/2017JD027768
  • Jessica Haskins, Felipe Lopez-Hilifiker, Ben Lee, Viral Shah, Glenn Wolf, Dorothy Fibiger, oshua DiGangi, Erin McDuffie, Patrick Veres, Jason Schroder, Pedro Camuzano-Jost, Douglas Day, Jose Jimenez, Andrew Weinheimer, Tamara Sparks, Ronald Cohen, Teresa Campos, Amy Sullivan, Hongyu Guo, Rodney Weber, Jack Dibb, Jaime Green, Marc Fiddler, Solomon Bililign, Lyatt Jaegle, Steven Brown, Joel Thornton, (2019). (Anthropogenic control over wintertime oxidation of atmospheric pollutants). (24) 46, pp. 14826-14835. Geophysical Research Letters. 
  • Damon Smith, Marc Fiddler, Kenneth Sexton, Solomon Bililign, (2019). (Construction and Characterization of an Indoor Smog Chamber for Measuring the Optical and Physicochemical Properties of Aging Biomass Burning Aerosols ). (3) 19, pp. 467-483. Aerosol and Air Quality Research.|https://doi.org/10.4209/aaqr.2018.06.0243  
  • Solomon Bililign, (2019). (Programs to Build Capacity in Geosciences at HBCUs and MSIs: Examples from North Carolina A and T State University ). (4) 67, pp. 351-365. Journal of Geosciences Education.http://dx.doi.org/10.1080/10899995.2019.1636337
  • Jaime Green, Marc Fiddler, John Holloway, Dorothy Fibiger, Erin McDuffie, Pedro Campuzano-Jost, Jason Schroder, Jose Jimenez, Andrew Weinheimer, Janine Aquino, D Montzka, Samuel Hall, Kirk Ulmann, Viral Shah, Lyatt Jaegle, Joel Thornton, Solomon Bililign, Steven Brown, (2019). (Rates of Wintertime Atmospheric SO2 Oxidation based on Aircraft Observations during Clear Sky Conditions over the Eastern U.S.). (12) 124, pp. 6630-6649. Journal of Geophysical Research-Atmospheres.https://doi.org/10.1029/2020JD033518
  • Damon Smith, Marc Fiddler, Rudra Pokhrel, Solomon Bililign, (2020). (Laboratory studies of fresh and aged biomass burning aerosols emitted from east African biomass fuels-PART 1-Optical properties). 20, pp. 10149–10168. Atmospheric Chemistry and Physics.https://doi.org/10.5194/acp-20-10149-2020


  • Damon Smith, Marc Fiddler, Rudra Pokhrel, Tianqu Cui, Jason Surratt, Solomon Bililign, (2020). (Laboratory studies of fresh and aged biomass burning aerosols emitted from east African biomass fuels-PART 2 –Chemical properties and characterization). 20, pp. 10169–10191. Atmospheric Chemistry and Physics. https://doi.org/10.5194/acp-20-10169-2020
  • Kenneth Kunkel, David Easterling, Andrew Ballinger, Solomon Bililign, Sarah Champion, D. Reide Corbett, Kathie Dello, Jenny Dissen, Gary Lackmann, Richard Luettich Jr., L. Baker Perry, Walter Robinson, Laura Stevens, Brooke Stewart, Adam Terando, (2020). (North Carolina Climate Science Report). North Carolina Institute for Climate Studies. . https://ncics.org/nccsr


  • Emmanuel Sarpong, Damon Smith, Marc Fiddler, Solomon Bililign, (2020). ( Refractive Indices of Biomass Burning Aerosols Obtained from African Biomass Fuels using RDG Approximations). (1) 11, pp. 62. Atmospheres https://doi.org/10.3390/atmos11010062
  • William Lassman, Jeffrey Pierce, Evelyn Bangs, Amy Sullivan, Bonne Ford, Gizaw Tsidu, James Sherman, Jeffrey Collett, Solomon Bililign, (2020). (Using low-cost measurement systems to investigate air quality: a case study in Palapye, Botswana. ). (6) 11, pp. 583. Atmopshere.https://doi.org/10.3390/atmos11060583
  • Rudra , Janica , Marc Fiddler, Solomon Bililign (2021). (Determination of Emission Factors of Pollutants From Biomass Burning of African Fuels in Laboratory Measurements). (20) 126, pp. e2021JD034731. Journal of Geophysical Research.
  • Rudra Pokhrel, Marc Fiddler, Janica Gordon, Solomon Bililign, (2021). (Impact of Combustion Conditions on Physical and Morphological Properties of Biomass Burning Aerosol). Aerosol Science and Technology., 55 (1) https://doi.org/10.1080/02786826.2020.1822512
  • Jaime Green, Marc Fiddler, Dorothy Fibiger, Erin McDuffie, Janine Aquino, Teresa Campos, Viral Shah, Lyatt Jaeglé, Joel Thornton, Joshua DiGangi, Glenn Wolfe, Solomon Bililign, Steven Brown, (2021). (Wintertime Formaldehyde: Airborne Observations and Source Apportionment over the Eastern United States). (5) 126, Journal of Geophysical Research -Atmosphere.     https://doi.org/10.1029/2020JD033518