Vladimir Dubrovskii

He obtained his PhD in 1990 and a doctor of sciences degree in 2002, in condensed matter physics.

Starting from 2003, he has been at the forefront of research in this field, collaborating with more than 40 groups in 18 countries (with joint publications).

His main area is in kinetically controlled engineering of nanostructures, including morphology, crustal phase, and size distributions.

In 2005, he and coauthors proved a diffusion-induced character of gold-assisted vapor-liquid-solid (VLS) growth of GaAs nanowires by molecular beam epitaxy [1].

In 2008-2014, following Frank Glas [2], he developed theoretical approaches for understanding and controlling polytypism of III-V nanowires by the growth parameter tuning [3] and catalyst material [4].

This allowed achieving record small GaAs nanowires (down to 5 nm in radius) with pure zincblende structure [5].

Independently of Jerry Tersoff [6], in 2013-2015 he predicted a non-linear focusing effect [7,8] that enabled self-organized ensembles of GaAs nanowires with uniform radii [8].

The works of 2016 brought up the new size distributions describing length statistics in nanowire ensembles [9,10].

In 2009, Dubrovskii discovered fluctuation-induced broadening (the Dubrovskii broadening) of the size distributions described by a Fokker-Planck type kinetic equation in terms of the Kuni invariant variables [15], and presented a map of the power exponents for the spectrum spreading in 2D and 3D systems.

Further studies revealed the influence of kinetic fluctuations on the size distributions of islands and droplets in the stages of their nucleation, growth, and Ostwald ripening [16,17].

Further investigation of the growth systems with size-linear capture rates led to a two-parametric modified beta-distribution (2015) [20] which acquires the Vicsek-Family scaling form [21] in the continuum limit.

Distributions of this type are now widely used for modeling the growth kinetics of semiconductor nanostructures, surface islands and biological objects.

He developed concepts of “mononuclear” growth [22,23] whereby individual nucleation events predetermine physical properties of emerging nanomaterials.

Together with Frank Glas, he predicted narrow sub-Poissonian size distributions [27] in systems with nucleation antibunching [28], and derived analytical asymptotes for their time-independent shapes.

He and coauthors developed semi-analytical models for elastic relaxation and misfit dislocations in nanostructures grown on lattice-mismatched substrates [29] and contributed into development of epitaxial techniques for monolithic integration of high quality optical III-V nanostructures with silicon electronic platform [8,18,30].

Dubrovskii main areas are currently in modeling and shaping of sophisticated nanowire nanoheterostructures, nucleation theory in the nanoscale, physical chemistry of alloys and compounds, and analytic size distributions.

Dubrovskii is lecturing in nucleation theory, epitaxy of nanostructures and growth modeling of nanowires.

He has supervised 10 PhD students, 2 of them under European Marie Curie Initial Training Networks.

"Diffusion-induced growth of GaAs nanowhiskers during molecular beam epitaxy: Theory and experiment".

[5] Gil, Evelyne; Dubrovskii, Vladimir G.; Avit, Geoffrey; André, Yamina; Leroux, Christine; et al. (2014-06-03).

[8] Dubrovskii, V. G.; Xu, T.; Álvarez, A. Díaz; Plissard, S. R.; Caroff, P.; Glas, F.; Grandidier, B.

[9] Dubrovskii, Vladimir G.; Berdnikov, Yury; Schmidtbauer, Jan; Borg, Mattias; Storm, Kristian; Deppert, Knut; Johansson, Jonas (2016-03-21).

[14] Dubrovskii, Vladimir G.; Consonni, Vincent; Trampert, Achim; Geelhaar, Lutz; Riechert, Henning (2012-04-23).

"Stress-Driven Nucleation of Three-Dimensional Crystal Islands: From Quantum Dots to Nanoneedles".

"Zeldovich Nucleation Rate, Self-Consistency Renormalization, and Crystal Phase of Au-Catalyzed GaAs Nanowires".

[24] Dubrovskii, V. G.; Xu, T.; Lambert, Y.; Nys, J.-P.; Grandidier, B.; Stiévenard, D.; Chen, W.; Pareige, P. (2012-03-05).

[full citation needed] [28] Glas, Frank; Harmand, Jean-Christophe; Patriarche, Gilles (2010-03-31).

[29] Zhang, Xu; Dubrovskii, Vladimir G.; Sibirev, Nickolay V.; Ren, Xiaomin (2011-12-07).

"Analytical Study of Elastic Relaxation and Plastic Deformation in Nanostructures on Lattice Mismatched Substrates".

[30] Ng, Kar Wei; Ko, Wai Son; Tran, Thai-Truong D.; Chen, Roger; Nazarenko, Maxim V.; Lu, Fanglu; Dubrovskii, Vladimir G.; Kamp, Martin; Forchel, Alfred; Chang-Hasnain, Connie J.