Publication List (JMU students co-authors are mentioned in bold font)

My Google Scholar Profile can be found here.

30. Kenneth D. Shaughnessy, Emma G. Langford, Chester J. Szwejkowski, Patrick Hopkins and Costel Constantin "Goniometry Versus Profilometry Studies of Contact Angle for PEDOT:PSS Deposited Onto Silicon and Fused Silica Substrates " " MRS Advances vol. 1, 471 (2016). PDF

29. Emma G. Langford, Kenneth D. Shaughnessy, Thomas C. Devore, David Lawrence and Costel "Analysis of PEDOT:PSS Films After Sulfuric Acid Treatment on Silicon and Fused Silica using FT-IR and UV-VIS" MRS Advances vol. 1, 465 (2016). PDF

28. David H. Olson, Kenneth D. Shaughnessy, Emma G. Langford, Michael Boyle, Muhammad B. Haider, David Lawrence and Costel Constantin "Structural and Electrical Characterization of Amorphous and Crystalline Manganese Oxide Thin Films Deposited by DC Magnetron Sputtering" MRS Advances vol. 1, 293 (2016). PDF

27. Charles B. Crook, Costel Constantin, Towfiq Ahmed, Jian-Xin Zhu, Alexander V. Balatsky, Jason T. Haraldsen "Proximity-induced magnetism in transition-metal substituted graphene" Scientific Reports 5:12322 (2015). PDF

26. M. Hedden, N. Francis, J.T. Haraldsen, T Ahmed, Costel Constantin "Thermoelectric Properties of Nano-Meso-Micro β-MnO2 Powders as a Function of Electrical Resistance" Nanoscale Research Letters 10:292 (2015). PDF

25. Brian F. Donovan, Chester J. Szwejkowski, John C. Duda, Ramez Cheaito, John T. Gaskins, C-Y. Peter Yang, Costel Constantin, Reese E. Jones, Patrick E. Hopkins "Thermal boundary conductance across metal-gallium nitride inteface " Appl. Phys. Lett. 105, 203502 (2014). PDF

24. Ramez Cheaito, John T. Gaskins, Matthew E. Caplan, Brian F. Donovan, Brian M. Foley, Ashutosh Giri, John C. Duda, Chester J. Szwejkowski, Costel Constantin, Harlan J. Brown-Shaklee, Jon F. Ihlefeld, Patrick E. Hopkins "Thermal boundary conductance accumulation and interfacial phonon transmission: Measurements and theory " Phys. Rev. B., vol. 91, Iss. 3-15, (2015). PDF

23. Chester J Szwejkowski, Nicole C Creange, Kai Sun, Ashutosh Giri, Brian F Donovan, Costel Constantin, Patrick E Hopkins "Size effects in the thermal conductivity of gallium oxide (β-Ga2O3) films grown via open-atmosphere annealing of gallium nitride" J. Appl. Phys. 117, 084308 (2015). PDF

22. Brian M. Foley, Caroline S. Gorham, John C. Duda, Ramez Cheaito, Chester J. Szwejkowski, Costel Constantin, Bryan Kaehr, and Patrick E. Hopkins "Protein Thermal Conductivity Measured in the Solid State Reveals Anharmonic Interactions of Vibrations in a Fractal Structure" J. Phys. Chem. Lett. 5, 1077-1082 (2014).PDF

21.Costel Constantin, Christopher Wm. Hughes, Brian H. Augustine, and Scott Paulson "Shenandoah Valley Nanoscience Outreach Collaboration " MRS Proceedings, 1583, mrss13-1583-eee04-03 (2013).PDF

20.Matthew Chamberlin, Renee Ahern, Costel Constantin "Seebeck Coefficient of Nanolayer Growth of Anatase TiO2-x/Al-foil by Atomic Layer Deposition" MRS Proceedings, 1494, mrsf12-1494-f09-32 (2013).PDF

19.Y.H. Liu, Kangkang Wang, Wenzhi Lin, Abhijit Chinchore, Meng Shi, Jeongihm Pak, A.R. Smith, Costel Constantin "The effect of growth parameters on CrN thin films grown by molecular beam epitaxy " Thin Solid Films 520, pg. 90-94, (2011). PDF

18.Matthew Chamberlin, Costel Constantin "Zinc and Zinc Oxide Nanowires Grown on PEDOT:PSS/SiO2 Conductive Polymer Thin Films by Vapor Phase Transport Deposition " MRS Proceedings, 1360, mrss11-1360-oo15-54 (2011). PDF

17.Costel Constantin,Abhijit Chinchore, Arthur R. Smith " "Reflection High Energy Electron Diffraction and Atomic Force Microscopy Study of MnxScy alloys grown by Molecular Beam Epitaxy" Mat. Res. Soc. Symp. Proc. 1295-N05-37 (2011).PDF

16. Costel Constantin, Kangkang Wang, Abhijit Chinchore, Arthur R. Smith, Han-Jong Chia, John Markert "Structural, Magnetic and Electronic Properties of Dilute MnScN(001) Grown by RF Nitrogen Plasma Molecular Beam Epitaxy" Mat. Res. Soc. Symp.Proc. 1290-I08-02 (2011).PDF

15. Phil Hess, Costel Constantin, Kangkang Wang, Abhijit Chincore, Arthur R. Smith, Kai Sun "Two Point Correlation Function and Monte Carlo Simulations of Clustering Properties of Manganese Populated Areas In Scandium Nitride System" JYI Vol 20, Issue 4, Oct. (2010).PDF

14.Costel Constantin, Jeongihm Pak, Kangkang Wang, Abhijit Chinchore, Meng Shi, Arthur R. Smith "Lattice Parameter Variation in ScGaN Alloy Thin Films on MgO(001) Grown by RF Plasma Molecular Beam Epitaxy" Mat. Res. Soc. Symp. Proc. Vol 1202, I05-25.PDF

13.Costel Constantin, Kangkang Wang, Abhijit Chinchore, Han-Jong Chia, John Markert, Arthur R. Smith "Magnetic and Electric Properties of Fe0.1Sc0.9N /ScN(001)/MgO(001) Films Grown by Radio-Frequency Molecular Beam Epitaxy" " Mat. Res. Soc. Symp. Proc. Vol. 1198-E07-22.PDF

12.Costel Constantin, Kai Sun, R. M. Feenstra "Nucleation and Stoichiometry Dependence of rutile-TiO2(001)/GaN(0001) Thin Films Grown by Plasma-Assisted Molecular Beam Epitaxy" Mat. Res. Soc. Symp. Proc. Vol 1108, A09-32.

11. Soukiassian, W. Tian, V. Vaithayanathan, J. H. Haeni, L. Q. Chen, X. X. Xi, D. G. Schlom, D. A. Tenne, H. P. Sun, X. Q. Pan, K. J. Choi, C. B. Eom, Y. L. Li, Q. X. Jia, Costel Constantin, R. M. Feenstra, M. Bernhagen, P. Reiche, R. Uecker, "Growth of nanoscale BaTiO3 / SrTiO3 superlattices by molecular-beam epitaxy" Journal of Material Research, Vol. 23, No. 5, May 2008, 1417-1431.

10. Muhammad B. Haider, Rong Yang, Costel Constantin, Erdong Lu, Arthur R. Smith, and Hamad A. H. Al-Brithen, "Surface Reconstructions of Cubic GaN(001) Grown by rf N-Plasma molecular beam epitaxy under Ga-rich Conditions", Journal of Applied Physics, 100(08), 083516 (2006). PDF

9. Muhammad B. Haider, Rong Yang, Hamad Al-Brithen, Costel Constantin, Arthur R.Smith , Gabriel Caruntu, and Charles J. O'Connor, "Scanning Tunneling Microscopy Study of Cr-doped GaN surface Grown by RF-Plasma Molecular Beam Epitaxy" Mat. Res. Soc. Symp. Proc. 892, 0892-FF04-03.1 (2006).PDF

8.Costel Constantin, Muhammad B. Haider, David Ingram, Arthur R. Smith, Nancy Sandler, Kai Sun, and Pablo Ordejón, "Composition-Dependent Structural Properties in ScGaN Alloy Films: A combined Experimental and Theoretical Study" Journal of Applied Physics 98(12), 123501 (2005).PDF

7. Hamad A. AL-Brithen, Rong Yang, Muhammad B. Haider, Costel Constantin, Erdong Lu, Nancy Sandler, Pablo Ordejon, and Arthur R. Smith, " Scanning Tunneling Microscopy and Surface Simulation of Zinc-Blende GaN(001) Intrinsic 4x Reconstruction: Linear Gallium Tetramers?" Physical Review Letters 95, 146102 (2005).PDF

6. Muhammad B. Haider, Rong Yang, Hamad Al-Brithen, Costel Constantin, David Ingram, Arthur R. Smith, Gabriel Caruntu, and Charles J. O'Connor, "Room Temperature Ferromagnetism in CrGaN: Dependence on Growth Conditions in rf-Plasma Molecular Beam Epitaxy " Journal of Crystal Growth 285(3), 300 (2005).PDF

5. Muhammad B. Haider, Costel Constantin, Hamad Al-Brithen, Gabriel Caruntu, Charles J. O'Conner, and Arthur R. Smith, "Dependence of Magnetic Properties on the Growth Conditions of MnGaN Grown by rf N-plasma Molecular Beam Epitaxy" Physica Status Solidi(a) 202:6, 1135 (2005).PDF

4.Costel Constantin, Muhammad B. Haider, David C. Ingram, and Arthur R. Smith,"Metal/Semiconductor Phase Transition in Chromium Nitride(001) Grown by rf-Plasma Assisted Molecular Beam Epitaxy" Appl. Phys. Lett. 85, 6371 (2004).PDF

3.Costel Constantin, Hamad Al-Brithen, Muhammad B. Haider, David Ingram, and Arthur R. Smith, "ScGaN Alloy Growth by Molecular Beam Epitaxy: Evidence for a Metastable Layered Hexagonal Phase" Phys. Rev B 70, 193309(2004).PDF

2.Costel Constantin, Hamad Al-Brithen, Muhammad B. Haider, David Ingram, and Arthur R. Smith, "Mixing Rocksalt and Wurtzite Structure Binary Nitrides to Form Novel Ternary Alloys: ScGaN and MnGaN" Mat. Res. Soc.Symp. Proc. 799, Z9.5 (2004).PDF

1. Muhammad B. Haider, Costel Constantin Hamad Al-Brithen, Haiqiang Yang, Eugen Trifan, David C. Ingram, and Arthur R. Smith, C.V. Kelly and Y. Ijiri, "Ga/N flux ratio influence on Mn incorporation, surface morphology, and lattice polarity during radio frequency molecular-beam epitaxy of (Ga,Mn)N" J. Appl. Phys. 93(9), 5274, (2003).PDF










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