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Showing 1 to 12 of 42 entries
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Photoconductivity Relaxation Mechanisms of InGaAs/GaAs Quantum Dot Chain Structures.

Nanoscale research letters

Kondratenko SV, Iliash SA, Vakulenko OV, Mazur YI, Benamara M, Marega E, Salamo GJ.
PMID: 28282982
Nanoscale Res Lett. 2017 Dec;12(1):183. doi: 10.1186/s11671-017-1954-7. Epub 2017 Mar 09.

An experimental study of the photoconductivity time decay in InGaAs/GaAs quantum dot chain structures is reported. Different photoconductivity relaxations resulting from spectrally selecting photoexcitation of InGaAs QWR or QDs as well as GaAs spacers were measured. The photoconductivity relaxation...

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Kondratenko SV, Iliash SA, Vakulenko OV, et al. Photoconductivity Relaxation Mechanisms of InGaAs/GaAs Quantum Dot Chain Structures. Nanoscale Res Lett. 2017;12(1):183doi: 10.1186/s11671-017-1954-7.
Kondratenko, S. V., Iliash, S. A., Vakulenko, O. V., Mazur, Y. I., Benamara, M., Marega, E., & Salamo, G. J. (2017). Photoconductivity Relaxation Mechanisms of InGaAs/GaAs Quantum Dot Chain Structures. Nanoscale research letters, 12(1), 183. https://doi.org/10.1186/s11671-017-1954-7
Kondratenko, Serhiy V, et al. "Photoconductivity Relaxation Mechanisms of InGaAs/GaAs Quantum Dot Chain Structures." Nanoscale research letters vol. 12,1 (2017): 183. doi: https://doi.org/10.1186/s11671-017-1954-7
Kondratenko SV, Iliash SA, Vakulenko OV, Mazur YI, Benamara M, Marega E, Salamo GJ. Photoconductivity Relaxation Mechanisms of InGaAs/GaAs Quantum Dot Chain Structures. Nanoscale Res Lett. 2017 Dec;12(1):183. doi: 10.1186/s11671-017-1954-7. Epub 2017 Mar 09. PMID: 28282982; PMCID: PMC5344880.
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Influence of the flow on the orientational dynamics induced by temperature gradient in nematic hybrid-oriented cells.

The Journal of chemical physics

Zakharov AV, Vakulenko AA.
PMID: 17764294
J Chem Phys. 2007 Aug 28;127(8):084907. doi: 10.1063/1.2772598.

The numerical study of the system of hydrodynamic equations that include the director motion, fluid flow, and the temperature field redistribution across the hybrid-oriented liquid crystal (LC) cell under influence of the temperature gradient has been investigated. Calculations show...

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Zakharov AV, Vakulenko AA. Influence of the flow on the orientational dynamics induced by temperature gradient in nematic hybrid-oriented cells. J Chem Phys. 2007;127(8):084907doi: 10.1063/1.2772598.
Zakharov, A. V., & Vakulenko, A. A. (2007). Influence of the flow on the orientational dynamics induced by temperature gradient in nematic hybrid-oriented cells. The Journal of chemical physics, 127(8), 084907. https://doi.org/10.1063/1.2772598
Zakharov, A V, and Vakulenko, A A. "Influence of the flow on the orientational dynamics induced by temperature gradient in nematic hybrid-oriented cells." The Journal of chemical physics vol. 127,8 (2007): 084907. doi: https://doi.org/10.1063/1.2772598
Zakharov AV, Vakulenko AA. Influence of the flow on the orientational dynamics induced by temperature gradient in nematic hybrid-oriented cells. J Chem Phys. 2007 Aug 28;127(8):084907. doi: 10.1063/1.2772598. PMID: 17764294.
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Theoretical analysis of physicochemical processes occurring during water treatment by ozone and ultraviolet radiation.

Advances in colloid and interface science

Mishchuk NA, Goncharuk VV, Vakulenko VF.
PMID: 18328995
Adv Colloid Interface Sci. 2008 Jun 22;139(1):62-73. doi: 10.1016/j.cis.2008.01.003. Epub 2008 Jan 26.

The paper presents a kinetic model developed for ozone dissolution in water and taking into account convective and diffusion processes occurring in the vicinity of floating bubbles that contain an ozone-air mixture. It was shown that the gradient of...

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Mishchuk NA, Goncharuk VV, Vakulenko VF. Theoretical analysis of physicochemical processes occurring during water treatment by ozone and ultraviolet radiation. Adv Colloid Interface Sci. 2008;139(1):62-73doi: 10.1016/j.cis.2008.01.003.
Mishchuk, N. A., Goncharuk, V. V., & Vakulenko, V. F. (2008). Theoretical analysis of physicochemical processes occurring during water treatment by ozone and ultraviolet radiation. Advances in colloid and interface science, 139(1), 62-73. https://doi.org/10.1016/j.cis.2008.01.003
Mishchuk, N A, et al. "Theoretical analysis of physicochemical processes occurring during water treatment by ozone and ultraviolet radiation." Advances in colloid and interface science vol. 139,1 (2008): 62-73. doi: https://doi.org/10.1016/j.cis.2008.01.003
Mishchuk NA, Goncharuk VV, Vakulenko VF. Theoretical analysis of physicochemical processes occurring during water treatment by ozone and ultraviolet radiation. Adv Colloid Interface Sci. 2008 Jun 22;139(1):62-73. doi: 10.1016/j.cis.2008.01.003. Epub 2008 Jan 26. PMID: 18328995.
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Intrinsic torsional reorientations in a twisted nematic liquid crystal cell.

Physical review. E, Statistical, nonlinear, and soft matter physics

Zakharov AV, Vakulenko AA.
PMID: 16196590
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Aug;72(2):021712. doi: 10.1103/PhysRevE.72.021712. Epub 2005 Aug 31.

The nature of the orientational relaxation process of the director n to its equilibrium orientation neq, in the twisted nematic cell, under the influence of an external electric field, is investigated. The influence of the electric, elastic, and viscous...

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Zakharov AV, Vakulenko AA. Intrinsic torsional reorientations in a twisted nematic liquid crystal cell. Phys Rev E Stat Nonlin Soft Matter Phys. 2005;72(2):021712doi: 10.1103/PhysRevE.72.021712.
Zakharov, A. V., & Vakulenko, A. A. (2005). Intrinsic torsional reorientations in a twisted nematic liquid crystal cell. Physical review. E, Statistical, nonlinear, and soft matter physics, 72(2), 021712. https://doi.org/10.1103/PhysRevE.72.021712
Zakharov, A V, and Vakulenko, A A. "Intrinsic torsional reorientations in a twisted nematic liquid crystal cell." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 72,2 (2005): 021712. doi: https://doi.org/10.1103/PhysRevE.72.021712
Zakharov AV, Vakulenko AA. Intrinsic torsional reorientations in a twisted nematic liquid crystal cell. Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Aug;72(2):021712. doi: 10.1103/PhysRevE.72.021712. Epub 2005 Aug 31. PMID: 16196590.
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Reprint of: inhibition of Escherichia coli RNAp by T7 Gp2 protein: role of negatively charged strip of amino acid residues in Gp2.

Journal of molecular biology

Sheppard C, Cámara B, Shadrin A, Akulenko N, Liu M, Baldwin G, Severinov K, Cota E, Matthews S, Wigneshweraraj SR.
PMID: 21819993
J Mol Biol. 2011 Oct 07;412(5):832-41. doi: 10.1016/j.jmb.2011.07.064. Epub 2011 Jul 30.

Gp2, a 7 kDa protein encoded by T7 bacteriophage, is a potent inhibitor of Escherichia coli RNA polymerase (RNAp), the enzyme responsible for transcription of all bacterial genes and early viral genes. A prominent feature in the structure of...

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Sheppard C, Cámara B, Shadrin A, et al. Reprint of: inhibition of Escherichia coli RNAp by T7 Gp2 protein: role of negatively charged strip of amino acid residues in Gp2. J Mol Biol. 2011;412(5):832-41doi: 10.1016/j.jmb.2011.07.064.
Sheppard, C., Cámara, B., Shadrin, A., Akulenko, N., Liu, M., Baldwin, G., Severinov, K., Cota, E., Matthews, S., & Wigneshweraraj, S. R. (2011). Reprint of: inhibition of Escherichia coli RNAp by T7 Gp2 protein: role of negatively charged strip of amino acid residues in Gp2. Journal of molecular biology, 412(5), 832-41. https://doi.org/10.1016/j.jmb.2011.07.064
Sheppard, Carol, et al. "Reprint of: inhibition of Escherichia coli RNAp by T7 Gp2 protein: role of negatively charged strip of amino acid residues in Gp2." Journal of molecular biology vol. 412,5 (2011): 832-41. doi: https://doi.org/10.1016/j.jmb.2011.07.064
Sheppard C, Cámara B, Shadrin A, Akulenko N, Liu M, Baldwin G, Severinov K, Cota E, Matthews S, Wigneshweraraj SR. Reprint of: inhibition of Escherichia coli RNAp by T7 Gp2 protein: role of negatively charged strip of amino acid residues in Gp2. J Mol Biol. 2011 Oct 07;412(5):832-41. doi: 10.1016/j.jmb.2011.07.064. Epub 2011 Jul 30. PMID: 21819993.
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Influence of an external field on the surface tension of free-standing smectic films.

Physical review. E, Statistical, nonlinear, and soft matter physics

Zakharov AV, Vakunenko AA.
PMID: 23030927
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Sep;86(3):031701. doi: 10.1103/PhysRevE.86.031701. Epub 2012 Sep 07.

We have carried out a theoretical study of the effect of the electric field E on the thermodynamical properties and surface tension γ of free-standing smectic films. Calculations, based upon the extended McMillan approach with anisotropic forces, show a...

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Zakharov AV, Vakunenko AA. Influence of an external field on the surface tension of free-standing smectic films. Phys Rev E Stat Nonlin Soft Matter Phys. 2012;86(3):031701doi: 10.1103/PhysRevE.86.031701.
Zakharov, A. V., & Vakunenko, A. A. (2012). Influence of an external field on the surface tension of free-standing smectic films. Physical review. E, Statistical, nonlinear, and soft matter physics, 86(3), 031701. https://doi.org/10.1103/PhysRevE.86.031701
Zakharov, A V, and Vakunenko, A A. "Influence of an external field on the surface tension of free-standing smectic films." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 86,3 (2012): 031701. doi: https://doi.org/10.1103/PhysRevE.86.031701
Zakharov AV, Vakunenko AA. Influence of an external field on the surface tension of free-standing smectic films. Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Sep;86(3):031701. doi: 10.1103/PhysRevE.86.031701. Epub 2012 Sep 07. PMID: 23030927.
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Aminoglycoside resistance profile and structural architecture of the aminoglycoside acetyltransferase AAC(6')-Im.

Microbial cell (Graz, Austria)

Smith CA, Bhattacharya M, Toth M, Stewart NK, Vakulenko SB.
PMID: 29234669
Microb Cell. 2017 Nov 09;4(12):402-410. doi: 10.15698/mic2017.12.602.

Aminoglycoside 6'-acetyltransferase-Im (AAC(6')-Im) is the closest monofunctional homolog of the AAC(6')-Ie acetyltransferase of the bifunctional enzyme AAC(6')-Ie/APH(2")-Ia. The AAC(6')-Im acetyltransferase confers 4- to 64-fold higher MICs to 4,6-disubstituted aminoglycosides and the 4,5-disubstituted aminoglycoside neomycin than AAC(6')-Ie, yet unlike AAC(6')-Ie,...

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Smith CA, Bhattacharya M, Toth M, et al. Aminoglycoside resistance profile and structural architecture of the aminoglycoside acetyltransferase AAC(6')-Im. Microb Cell. 2017;4(12):402-410doi: 10.15698/mic2017.12.602.
Smith, C. A., Bhattacharya, M., Toth, M., Stewart, N. K., & Vakulenko, S. B. (2017). Aminoglycoside resistance profile and structural architecture of the aminoglycoside acetyltransferase AAC(6')-Im. Microbial cell (Graz, Austria), 4(12), 402-410. https://doi.org/10.15698/mic2017.12.602
Smith, Clyde A, et al. "Aminoglycoside resistance profile and structural architecture of the aminoglycoside acetyltransferase AAC(6')-Im." Microbial cell (Graz, Austria) vol. 4,12 (2017): 402-410. doi: https://doi.org/10.15698/mic2017.12.602
Smith CA, Bhattacharya M, Toth M, Stewart NK, Vakulenko SB. Aminoglycoside resistance profile and structural architecture of the aminoglycoside acetyltransferase AAC(6')-Im. Microb Cell. 2017 Nov 09;4(12):402-410. doi: 10.15698/mic2017.12.602. PMID: 29234669; PMCID: PMC5722643.
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A constitutive stress response is a result of low temperature growth in the Antarctic green alga Chlamydomonas sp. UWO241.

Plant, cell & environment

Cvetkovska M, Zhang X, Vakulenko G, Benzaquen S, Szyszka-Mroz B, Malczewski N, Smith DR, Hüner NPA.
PMID: 34664276
Plant Cell Environ. 2021 Oct 18; doi: 10.1111/pce.14203. Epub 2021 Oct 18.

The Antarctic green alga Chlamydomonas sp. UWO241 is an obligate psychrophile that thrives in the cold (4-6°C) but is unable to survive at temperatures ≥18°C. Little is known how exposure to heat affects its physiology or whether it mounts...

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Cvetkovska M, Zhang X, Vakulenko G, et al. A constitutive stress response is a result of low temperature growth in the Antarctic green alga Chlamydomonas sp. UWO241. Plant Cell Environ. 2021;doi: 10.1111/pce.14203.
Cvetkovska, M., Zhang, X., Vakulenko, G., Benzaquen, S., Szyszka-Mroz, B., Malczewski, N., Smith, D. R., & Hüner, N. P. A. (2021). A constitutive stress response is a result of low temperature growth in the Antarctic green alga Chlamydomonas sp. UWO241. Plant, cell & environment, . https://doi.org/10.1111/pce.14203
Cvetkovska, Marina, et al. "A constitutive stress response is a result of low temperature growth in the Antarctic green alga Chlamydomonas sp. UWO241." Plant, cell & environment vol. (2021). doi: https://doi.org/10.1111/pce.14203
Cvetkovska M, Zhang X, Vakulenko G, Benzaquen S, Szyszka-Mroz B, Malczewski N, Smith DR, Hüner NPA. A constitutive stress response is a result of low temperature growth in the Antarctic green alga Chlamydomonas sp. UWO241. Plant Cell Environ. 2021 Oct 18; doi: 10.1111/pce.14203. Epub 2021 Oct 18. PMID: 34664276.
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Topological phonon-polariton funneling in midinfrared metasurfaces.

Science (New York, N.Y.)

Guddala S, Komissarenko F, Kiriushechkina S, Vakulenko A, Li M, Menon VM, Alù A, Khanikaev AB.
PMID: 34618590
Science. 2021 Oct 08;374(6564):225-227. doi: 10.1126/science.abj5488. Epub 2021 Oct 07.

[Figure: see text].

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Guddala S, Komissarenko F, Kiriushechkina S, et al. Topological phonon-polariton funneling in midinfrared metasurfaces. Science. 2021;374(6564):225-227doi: 10.1126/science.abj5488.
Guddala, S., Komissarenko, F., Kiriushechkina, S., Vakulenko, A., Li, M., Menon, V. M., Alù, A., & Khanikaev, A. B. (2021). Topological phonon-polariton funneling in midinfrared metasurfaces. Science (New York, N.Y.), 374(6564), 225-227. https://doi.org/10.1126/science.abj5488
Guddala, S, et al. "Topological phonon-polariton funneling in midinfrared metasurfaces." Science (New York, N.Y.) vol. 374,6564 (2021): 225-227. doi: https://doi.org/10.1126/science.abj5488
Guddala S, Komissarenko F, Kiriushechkina S, Vakulenko A, Li M, Menon VM, Alù A, Khanikaev AB. Topological phonon-polariton funneling in midinfrared metasurfaces. Science. 2021 Oct 08;374(6564):225-227. doi: 10.1126/science.abj5488. Epub 2021 Oct 07. PMID: 34618590.
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Near-Field Characterization of Higher-Order Topological Photonic States at Optical Frequencies.

Advanced materials (Deerfield Beach, Fla.)

Vakulenko A, Kiriushechkina S, Wang M, Li M, Zhirihin D, Ni X, Guddala S, Korobkin D, Alù A, Khanikaev AB.
PMID: 33734495
Adv Mater. 2021 May;33(18):e2004376. doi: 10.1002/adma.202004376. Epub 2021 Mar 18.

Higher-order topological insulators (HOTIs) represent a new type of topological system, supporting boundary states localized over boundaries, two or more dimensions lower than the dimensionality of the system itself. Interestingly, photonic HOTIs can possess a richer physics than their...

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Vakulenko A, Kiriushechkina S, Wang M, et al. Near-Field Characterization of Higher-Order Topological Photonic States at Optical Frequencies. Adv Mater. 2021;33(18):e2004376doi: 10.1002/adma.202004376.
Vakulenko, A., Kiriushechkina, S., Wang, M., Li, M., Zhirihin, D., Ni, X., Guddala, S., Korobkin, D., Alù, A., & Khanikaev, A. B. (2021). Near-Field Characterization of Higher-Order Topological Photonic States at Optical Frequencies. Advanced materials (Deerfield Beach, Fla.), 33(18), e2004376. https://doi.org/10.1002/adma.202004376
Vakulenko, Anton, et al. "Near-Field Characterization of Higher-Order Topological Photonic States at Optical Frequencies." Advanced materials (Deerfield Beach, Fla.) vol. 33,18 (2021): e2004376. doi: https://doi.org/10.1002/adma.202004376
Vakulenko A, Kiriushechkina S, Wang M, Li M, Zhirihin D, Ni X, Guddala S, Korobkin D, Alù A, Khanikaev AB. Near-Field Characterization of Higher-Order Topological Photonic States at Optical Frequencies. Adv Mater. 2021 May;33(18):e2004376. doi: 10.1002/adma.202004376. Epub 2021 Mar 18. PMID: 33734495.
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New way for cell differentiation: Reaction, diffusion and chaotic waves.

Bio Systems

Vakulenko SA, Grigoriev D.
PMID: 35026320
Biosystems. 2022 Jan 10;104605. doi: 10.1016/j.biosystems.2021.104605. Epub 2022 Jan 10.

In this paper, we consider reaction-diffusion systems, which describe the propagation of waves with chaotic and time periodic fronts. Using this property, we show that there exist reaction-diffusion models with a few of reagents, which, by a variation of...

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Vakulenko SA, Grigoriev D. New way for cell differentiation: Reaction, diffusion and chaotic waves. Biosystems. 2022;104605doi: 10.1016/j.biosystems.2021.104605.
Vakulenko, S. A., & Grigoriev, D. (2022). New way for cell differentiation: Reaction, diffusion and chaotic waves. Bio Systems, 104605. https://doi.org/10.1016/j.biosystems.2021.104605
Vakulenko, Sergey A, and Grigoriev, Dmitry. "New way for cell differentiation: Reaction, diffusion and chaotic waves." Bio Systems vol. (2022): 104605. doi: https://doi.org/10.1016/j.biosystems.2021.104605
Vakulenko SA, Grigoriev D. New way for cell differentiation: Reaction, diffusion and chaotic waves. Biosystems. 2022 Jan 10;104605. doi: 10.1016/j.biosystems.2021.104605. Epub 2022 Jan 10. PMID: 35026320.
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Adaptation, fitness landscape learning and fast evolution.

F1000Research

Reinitz J, Vakulenko S, Grigoriev D, Weber A.
PMID: 31656586
F1000Res. 2019 Apr 01;8:358. doi: 10.12688/f1000research.18575.1. eCollection 2019.

We consider evolution of a large population, where fitness of each organism is defined by many phenotypical traits. These traits result from expression of many genes. Under some assumptions on  fitness we prove that such model organisms  are capable,...

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Reinitz J, Vakulenko S, Grigoriev D, et al. Adaptation, fitness landscape learning and fast evolution. F1000Res. 2019;8:358doi: 10.12688/f1000research.18575.1.
Reinitz, J., Vakulenko, S., Grigoriev, D., & Weber, A. (2019). Adaptation, fitness landscape learning and fast evolution. F1000Research, 8358. https://doi.org/10.12688/f1000research.18575.1
Reinitz, John, et al. "Adaptation, fitness landscape learning and fast evolution." F1000Research vol. 8 (2019): 358. doi: https://doi.org/10.12688/f1000research.18575.1
Reinitz J, Vakulenko S, Grigoriev D, Weber A. Adaptation, fitness landscape learning and fast evolution. F1000Res. 2019 Apr 01;8:358. doi: 10.12688/f1000research.18575.1. eCollection 2019. PMID: 31656586; PMCID: PMC6798318.
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