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Uvarova L, Rednyk S, Dohnal P, Kassayová M, Saito S, Roučka Š, Plašil R, Johnsen R, Glosík J. Recombination of vibrationally cold N2+ ions with electrons. J Chem Phys 2023; 158:2887561. [PMID: 37125712 DOI: 10.1063/5.0149110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/17/2023] [Indexed: 05/02/2023] Open
Abstract
Recombination of vibrationally cold N2+ ions with electrons was studied in the temperature range of 140-250 K. A cryogenic stationary afterglow apparatus equipped with cavity ring-down spectrometer and microwave diagnostics was utilized to probe in situ the time evolutions of number densities of particular rotational and vibrational states of N2+ ions and of electrons. The obtained value of the recombination rate coefficient for the recombination of the vibrational ground state of N2+ with electrons is αv=0 = (2.95 ± 0.50) × 10-7(300/T)(0.28±0.07) cm3 s-1, while that for the first vibrationally excited state was inferred as αv=1 = (4 ± 4) × 10-8 cm3 s-1 at 250 K.
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Affiliation(s)
- L Uvarova
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - S Rednyk
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - P Dohnal
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - M Kassayová
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - S Saito
- Department of Physics, Rikkyo University, Tokyo, Japan
| | - Š Roučka
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - R Plašil
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
| | - R Johnsen
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | - J Glosík
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, Prague, Czech Republic
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Morozov IA, Kamenetskikh AS, Beliaev AY, Scherban MG, Lemkina LM, Eroshenko DV, Kiselkov DM. Structural‐mechanical and biomedical surface properties of elastic polyurethane after
PECVD
of Ar/
C
2
H
2
. J Appl Polym Sci 2021. [DOI: 10.1002/app.49725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ilya A. Morozov
- Institute of Continuous Media Mechanics UB RAS Perm Russia
- Department of Physical Chemistry Perm State University Perm Russia
| | | | | | | | - Larisa M. Lemkina
- Institute of Ecology and Genetics of Microorganisms UB RAS Perm Russia
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Plasma-activated interfaces for biomedical engineering. Bioact Mater 2021; 6:2134-2143. [PMID: 33511312 PMCID: PMC7810626 DOI: 10.1016/j.bioactmat.2021.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/16/2020] [Accepted: 01/01/2021] [Indexed: 02/06/2023] Open
Abstract
As an important phenomenon to monitor disease development, cell signaling usually takes place at the interface between organisms/cells or between organisms/cells and abiotic materials. Therefore, finding a strategy to build the specific biomedical interfaces will help regulate information transmission and produce better therapeutic results to benefit patients. In the past decades, plasmas containing energetic and active species have been employed to construct various interfaces to meet biomedical demands such as bacteria inactivation, tissue regeneration, cancer therapy, and so on. Based on the potent functions of plasma modified surfaces, this mini-review is aimed to summarize the state-of-art plasma-activated interfaces and provide guidance to researchers to select the proper plasma and processing conditions to design and prepare interfaces with the optimal biological and related functions. After a brief introduction, plasma-activated interfaces are described and categorized according to different criteria including direct plasma-cells interfaces and indirect plasma-material-cells interfaces and recent research activities on the application of plasma-activated interfaces are described. The authors hope that this mini-review will spur interdisciplinary research efforts in this important area and expedite associated clinical applications. The Interfaces between organisms/cells and abiotic materials are crucial for cell signaling. Plasmas containing energetic and active species are potent tool to construct biomedical interfaces. The objective here is to summarize recent plasma-activated interfaces to spur interdisciplinary efforts for clinical applications.
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Guo S, Liu N, Liu K, Li Y, Zhang W, Zhu B, Gu B, Wen N. Effects of carbon and nitrogen plasma immersion ion implantation on bioactivity of zirconia. RSC Adv 2020; 10:35917-35929. [PMID: 35517098 PMCID: PMC9056952 DOI: 10.1039/d0ra05853j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 09/06/2020] [Indexed: 01/11/2023] Open
Abstract
Zirconia is considered the most promising alternative material to titanium implants. However, zirconia is a biologically inert material and its surface modification is essential to obtain efficient osseointegration. Plasma immersion ion implantation (PIII) is a controllable and flexible approach that constructs functional groups on the surface of biomaterials and enhances osteogenic ability of host osteoclast cells. Zirconia disks were randomly divided into 4 groups (n = 50/group): (1) Blank, (2) C60N0, (3) C60N6, and (4) C60N18. Carbon and nitrogen plasma immersion ion implantation on zirconia (C and N2-PIII) surface modification was completed with the corresponding parameters. When zirconia was modified by carbon and nitrogen plasma implantation, a new chemical structure was formed on the material surface while the surface roughness of the material remained unaltered. The nitrogen-containing functional groups with high potential were introduced but the bulk crystal structure of zirconia was not changed, indicating that the stability of zirconia was not affected. In vitro data showed that zirconia with high surface potential promoted adhesion, proliferation, and osteogenic differentiation of BMSCs. C60N6 was found to be superior to the other groups. Our results demonstrate that a zirconia surface modified by C and N2-PIII can introduce desirable nitrogen functional groups and create a suitable extracellular environment to promote BMSCs biological activity. Taken together, these results suggest that C and N2-PIII modified zirconia is a promising material for use in the field of medical implantation. Zirconia is considered the most promising alternative material to titanium implants.![]()
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Affiliation(s)
- Shuqin Guo
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital 28 Fuxing Road, Haidian District Beijing 100853 China + (86) 010 66937947.,Department of Stomatology, Beijing Railway Construction Hospital, China Railway Construction Corporation 40 Fuxing Road, Haidian District Beijing 100855 China
| | - Na Liu
- Department of Stomatology, Hainan Hospital, Chinese PLA General Hospital Sanya 572013 Hainan Province China
| | - Ke Liu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Ying Li
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital 28 Fuxing Road, Haidian District Beijing 100853 China + (86) 010 66937947
| | - Wei Zhang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 China
| | - Biao Zhu
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital 28 Fuxing Road, Haidian District Beijing 100853 China + (86) 010 66937947
| | - Bin Gu
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital 28 Fuxing Road, Haidian District Beijing 100853 China + (86) 010 66937947
| | - Ning Wen
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital 28 Fuxing Road, Haidian District Beijing 100853 China + (86) 010 66937947
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Morozov IA, Kamenetskikh AS, Izumov RI, Scherban MG. The study of island carbon coating on nitrogen-activated polyurethane surface. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/1134/1/012042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Elastic polyurethane bearing pendant TGF-β1 affinity peptide for potential tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 83:67-77. [DOI: 10.1016/j.msec.2017.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 09/05/2017] [Accepted: 10/11/2017] [Indexed: 12/18/2022]
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Morozov IA, Mamaev AS, Osorgina IV, Beliaev AY, Izumov RI, Oschepkova TE. Soft polyurethanes treated by plasma immersion ion implantation: Structural and mechanical properties of the surface-modified layer. J Appl Polym Sci 2017. [DOI: 10.1002/app.45983] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ilya A. Morozov
- Institute of Continuous Media Mechanics, Ural Branch of the Russian Academy of Sciences, Academika Koroleva Street 1; Perm 614013 Russia
- Perm State University, Bukireva Street 15; Perm 614990 Russia
| | - Alexander S. Mamaev
- Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, Amundsen Street 106; Ekaterinburg 620016 Russia
| | | | - Anton Y. Beliaev
- Institute of Continuous Media Mechanics, Ural Branch of the Russian Academy of Sciences, Academika Koroleva Street 1; Perm 614013 Russia
| | - Roman I. Izumov
- Institute of Continuous Media Mechanics, Ural Branch of the Russian Academy of Sciences, Academika Koroleva Street 1; Perm 614013 Russia
| | - Tamara E. Oschepkova
- Institute of Technical Chemistry, Ural Branch of the Russian Academy of Sciences, Academika Koroleva Street 3; Perm 614013 Russia
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Samanta A, Podder S, Ghosh CK, Bhattacharya M, Ghosh J, Mallik AK, Dey A, Mukhopadhyay AK. ROS mediated high anti-bacterial efficacy of strain tolerant layered phase pure nano-calcium hydroxide. J Mech Behav Biomed Mater 2017; 72:110-128. [DOI: 10.1016/j.jmbbm.2017.04.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/30/2017] [Accepted: 04/05/2017] [Indexed: 12/18/2022]
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Megevand B, Pruvost S, Lins LC, Livi S, Gérard JF, Duchet-Rumeau J. Probing nanomechanical properties with AFM to understand the structure and behavior of polymer blends compatibilized with ionic liquids. RSC Adv 2016. [DOI: 10.1039/c6ra18492h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The PeakForce QNM AFM mode was used to investigate the nanoscale mechanical properties of poly(butylene-adipate-co-terephthalate)/poly(lactic acid) (PBAT/PLA) blends successfully compatibilized with phosphonium-based ionic liquids (ILs).
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Affiliation(s)
- Benjamin Megevand
- Université de Lyon
- INSA Lyon
- UMR CNRS 5223
- IMP Ingénierie des Matériaux Polymères
- F-69621 Villeurbanne
| | - Sébastien Pruvost
- Université de Lyon
- INSA Lyon
- UMR CNRS 5223
- IMP Ingénierie des Matériaux Polymères
- F-69621 Villeurbanne
| | - Luanda C. Lins
- Université de Lyon
- INSA Lyon
- UMR CNRS 5223
- IMP Ingénierie des Matériaux Polymères
- F-69621 Villeurbanne
| | - Sébastien Livi
- Université de Lyon
- INSA Lyon
- UMR CNRS 5223
- IMP Ingénierie des Matériaux Polymères
- F-69621 Villeurbanne
| | - Jean-François Gérard
- Université de Lyon
- INSA Lyon
- UMR CNRS 5223
- IMP Ingénierie des Matériaux Polymères
- F-69621 Villeurbanne
| | - Jannick Duchet-Rumeau
- Université de Lyon
- INSA Lyon
- UMR CNRS 5223
- IMP Ingénierie des Matériaux Polymères
- F-69621 Villeurbanne
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