In memory of Eduard Vakarin
On May 22, 2015 a sudden regrettable death took away Eduard Vakarin at an early age. Although Vakarin never held a prominent academic position, he established a reputation in the statistical mechanical theory of Condensed Matter by his investigation of different real coupled systems. The results he...
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| Дата: | 2015 |
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| Формат: | Стаття |
| Мова: | English |
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Інститут фізики конденсованих систем НАН України
2015
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| Назва видання: | Condensed Matter Physics |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/155262 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | In memory of Eduard Vakarin // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 37002: 1–2. — англ. |
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irk-123456789-1552622019-08-30T23:28:11Z In memory of Eduard Vakarin Obituary On May 22, 2015 a sudden regrettable death took away Eduard Vakarin at an early age. Although Vakarin never held a prominent academic position, he established a reputation in the statistical mechanical theory of Condensed Matter by his investigation of different real coupled systems. The results he obtained are significant from both fundamental and practical perspectives. 2015 Article In memory of Eduard Vakarin // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 37002: 1–2. — англ. 1607-324X DOI:10.5488/CMP.18.37002 http://dspace.nbuv.gov.ua/handle/123456789/155262 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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English |
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Obituary Obituary |
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Obituary Obituary In memory of Eduard Vakarin Condensed Matter Physics |
| description |
On May 22, 2015 a sudden regrettable death took away Eduard Vakarin at an early age. Although Vakarin never held a prominent academic position, he established a reputation in the statistical mechanical theory of Condensed Matter by his investigation of different real coupled systems. The results he obtained are significant from both fundamental and practical perspectives. |
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Article |
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In memory of Eduard Vakarin |
| title_short |
In memory of Eduard Vakarin |
| title_full |
In memory of Eduard Vakarin |
| title_fullStr |
In memory of Eduard Vakarin |
| title_full_unstemmed |
In memory of Eduard Vakarin |
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in memory of eduard vakarin |
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Інститут фізики конденсованих систем НАН України |
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2015 |
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Obituary |
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http://dspace.nbuv.gov.ua/handle/123456789/155262 |
| citation_txt |
In memory of Eduard Vakarin // Condensed Matter Physics. — 2015. — Т. 18, № 3. — С. 37002: 1–2. — англ. |
| series |
Condensed Matter Physics |
| first_indexed |
2025-07-14T07:19:19Z |
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2025-07-14T07:19:19Z |
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1837606631567785984 |
| fulltext |
Condensed Matter Physics, 2015, Vol. 18, No 3, 37002: 1–2
DOI: 10.5488/CMP.18.37002
http://www.icmp.lviv.ua/journal
Personalia
In memory of Eduard Vakarin
On May 22, 2015 a sudden regrettable death took away Eduard Vakarin at an early age. Although
Vakarin never held a prominent academic position, he established a reputation in the statistical mechan-
ical theory of Condensed Matter by his investigation of different real coupled systems. The results he
obtained are significant from both fundamental and practical perspectives.
E. Vakarin was born in Ukraine in the city of Lviv on February 28, 1967. After finishing the Lviv
University in 1992, he started his scientific activities under the supervision of M. Holovko as a post-
graduate student at the Institute of CondensedMatter Physics (ICMP) of the National Academy of Sciences
of Ukraine (NASU). In 1996 he defended his Ph. D. dissertation entitled “The influence of association phe-
nomena on the interfacial properties”. Later on, from 1996 till 2001, he worked as a researcher at the
ICMP of NASU. From 2001 till 2015 he continued his scientific activities as the first class researcher of
CNRS in the group of J.P. Badiali at the Université Pierre etMarie Curie and the École Nationale Supérieure
de Chimie de Paris in Paris, France. Here in 2008 he defended his habilitation thesis entitled “Theoretical
approaches for the description of real systems. Statistical mechanics of coupled systems”.
In early works by E. Vakarin, for the description of associative fluids near a surface, the associative
version of the Henderson-Abraham-Barker approach was developed. Within the framework of this ap-
proach, the drying effect of a fluid from the surface due to the association of the fluid was found. For a
crystalline surface, due to the competition between intramolecular correlation and attraction between
molecules with lattice sites, there was found the possibility to have cooperative adsorption of fluid at
surprisingly rather small densities. This phenomenon was used to explain the anomalous adsorption of
polymers in the diluted-semidiluted concentration regime and to clarify the mechanism of low-pressure
insertion and separation of chain-line molecules in host matrices. E. Vakarin together with Yu. Duda
reformulated the associative integral equation theory for network forming fluids. The liquid-gas phase
transition in such fluids was found and it was shown that the liquid phase including the critical point is
entirely embedded in the percolation region. It is also shown that the crystalline surface enhances the
clustering in fluids. For the non-rigid surface it was possible to investigate the modification of the sur-
face by absorbent. In this study it was shown that the presence of an absorbent may induce distortive
and roughening transitions on the underlying substrate, a structural rearrangement of surface and some
other complex phenomena due to the competing adsorbent-substrate interactions.Within the framework
of this research, the effect of ice films morphology on HCl uptake was investigated as a possible mecha-
nism of chlorine accumulation in polar stratospheric clouds.
Another important aspect of E. Vakarin’s activities is connected with the investigations of the physics
associated with intercalation of ions into host matrixes. He extensively used the fact that an insertion pro-
37002-1
http://dx.doi.org/10.5488/CMP.18.37002
http://www.icmp.lviv.ua/journal
cess can be considered as 3D adsorption. In particular, for the first time he explicitly took into account
the fact that a change on the volume of the host material may have a strong effect on the insertion mech-
anism. Employing the lattice gas model, combined with the linear elasticity theory, Eduard argues that
the major feature of the intercalation isotherms can be well understood in terms of a coupling between
the configurational and structural transitions. The theory developed provides a quantitative description
of different insertion processes and was used for the interpretation of the experiments obtained in the
teams of M.D. Levi (Bar-Ilan University, Israel) and G. Garcia-Belmonte (Universitat Jaume 1, Spain). The
idea regarding the deformation of a matrix by adsorption of fluid was used in collaboration withW. Dong
(ENS Lyon, France) for investigation of some aspects concerning phase transition in porousmaterials. The
question was related to the following: how should we characterise a porous material simply beyond the
porosity and why computer simulations can give divergent results.
From this kind of study Eduard decided to investigate fundamental problems related to the entropy
in complex systems and in non-extensive media. Statistical properties of such systems were studied
within a combination of the maximum information principle and the super-statistical approach with
parametrized information entropymeasures such as Tsallis or Renyi. In his latest work, E. Vakarin devel-
oped the theoretical tools needed to investigate the process of aging in lithium batteries. This is not only
a very important subject for producers of batteries but also a very fundamental problem to be solved.
We present our condolences to the family of E. Vakarin, to colleagues and friends in connection with
his untimely death.
J.P. Badiali, D. di Caprio, M.F. Holovko
37002-2
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