Yuri Melnichenko


Position: Instrument Scientist

Group: Structure and Dynamics of Soft Matter

Facility: High Flux Isotope Reactor

Email: melnichenkoy@ornl.gov

Phone: (865) 576-7746

Senior Research Staff Member, Research Staff Member, Postdoctoral associate, Neutron Scattering Directorate, ORNL

Visiting Researcher, Max Planck Institute for Polymer Research, Germany

Senior Research Scientist, Research Scientist, Inst. for Macromolecular Chemistry, Ukrainian Academy of Science, Kiev, Ukraine

Research Scientist, PhD Student, Kiev State University, Ukraine


Doctor of. Science Physics and Mathematics, Institute for Macromol. Chemistry, Academy of
Sciences, USSR (1992).

PhD (Cand. of Sc.) Physics, Dept. of Physics, Kiev State University (1985).

MS Physics, Dept. of Physics, Kiev State University (1976).


Small-angle neutron scattering investigations of the structure, thermodynamic, and dynamic properties of polymer melts and blends; solutions of polymers in organic and supercritical solvents at ambient and elevated pressures; homopolymers, block copolymers, and block copolymer micelles in supercritical fluids; polyelectrolytes, structural transformations in biopolymers; fullerenes and fullerene derivatives; the influence of small pores on the structure and dynamics of confined fluids. Complementary techniques: X-ray scattering, quasielastic and inelastic neutron scattering, dynamic and static light scattering.

Selected Publications

From more than 150 peer reviewed articles:

Y. B. Melnichenko and G. D. Wignall, Small-angle neutron scattering in materials science: Recent practical applications, J. Appl. Phys. Reviews 102, 021101 (2007).

G. D. Wignall and Y. B. Melnichenko, Recent applications of small-angle scattering in strongly interacting soft matter, Rep. Progr. Phys. 68, 1761 (2005).

M. M. Crawford, R. J. Smalley, G. Cohen, B. Hogan, B. Wood, S. K. Kumar, Y. B. Melnichenko, L. He, W. Guise and B. Hammouda, Chain conformation in polymer nanocomposites with uniformly dispersed nanoparticles, Phys. Rev. Lett, 110, 196001 (2013).

L. He, G. Cheng, and Y. B. Melnichenko, Partial Collapse and Reswelling of a Polymer in the Critical Demixing Region of Good Solvents, Phys. Rev. Lett. 109, 067801 (2012).

G. Cheng, W.W. Graessley and Y. B. Melnichenko, Polymer solutions in good solvents: Crossover from semidilute to concentrated solutions, Phys. Rev. Lett. 102, 157801 (2009).

Y. B. Melnichenko, M. A. Anisimov, A. Povodyrev, G. D. Wignall, J. S. Sengers and W. A. Van Hook, Sharp Crossover of the Susceptibility in Polymer Solutions, Phys. Rev. Lett.,79, 5266 (1997).

Y. B. Melnichenko and G. D. Wignall, Dimensions of Polymer Chains in Critical Semidilute Solutions, Phys. Rev. Lett., 78, 686 (1997).

J. Schueller, Y. B. Melnichenko*, R. Richert, and E. W. Fischer, Dielectric Studies of Glass Transition in Pores, Phys. Rev. Lett., 73, 2224 (1994).

Y. B. Melnichenko, N. V. Lavrik, E. Popov, J. Bahadur, L. He, I. I. Kravchenko, G. Smith, V. Pipich, and N. K. Szekely, Cavitation on deterministically nanostructured surfaces in contact with an aqueous phase: A small-angle neutron scattering study, Langmuir 30, 9985 – 9990 (2014)

Y. B. Melnichenko and S. Ciccariello, Small angle neutron scattering study of deuterated propane adsorption in silica aerogel J. Chem. Phys. C 116, 24661 (2012).

Awards, Honors and Memberships

2013 Dalway J. Swaine Award from the Society for Organic Chemistry

Fellow, American Physical Society (2005), for “Significant contribution to the fundamental science underlying universal aspects of macromolecules in polymer solutions, supercritical mixtures and polymer blends”

ORNL Significant Achievement Award (2006), for "Design and installation of the two new small-angle neutron scattering instruments at HFIR"

Fellow, Humboldt Foundation (1993), Germany

Max Planck Society Fellowship, (1994), Germany

Member, Americal Physical Society

Member, Neurtron Scattering Society of America