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Raju GU, Meti VKV, Banapurmath NR, Yunus Khan TM, Siddhalingeshwar IG, Vaikunte V, Vadlamudi C, Krishnappa S, Sajjan AM, Patil A. Effect of Multi-Walled Carbon Nanotubes and Carbon Fiber Reinforcements on the Mechanical and Tribological Behavior of Hybrid Mg-AZ91D Nanocomposites. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6181. [PMID: 36079562 PMCID: PMC9458067 DOI: 10.3390/ma15176181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Magnesium matrix composites are extensively used in automotive and structural applications due to their low density, high strength, and wear-resistant properties. To reach the scope of industry needs, research is carried out regarding enhancing the mechanical and tribological behavior of the magnesium composites by reinforcing the nano-sized reinforcements. In the present work, research has been carried out to enhance the properties of the magnesium AZ91D hybrid composite by reinforcing carbon fibers (CFs) and multi-walled carbon nanotubes (MWCNTs) with varying weight percentages (AZ91D + 0.5% CF's + 0.5% MWCNT and AZ91D + 0.75% CF's + 0.75% MWCNT, respectively). The experimental tests were carried out to evaluate the mechanical and tribological behavior of the composites. The test results showed that the addition of CF and MWCNT reinforcements improved the hybrid Mg composite's hardness, tensile strength, and impact strength compared to the base Mg matrix. The AZ91D + 0.75% CF's + 0.75% MWCNT hybrid composite showed a 19%, 35%, and 66% increased hardness, tensile strength, and impact strength, respectively, compared to the base Mg AZ91D. The wear test results also showed the improved wear resistance of the Mg composite compared to the base matrix. The enhanced wear resistance of the composite is due to the addition of hard MWCNT and CF reinforcements. The wear rate of the AZ91D + 0.75%CF's + 0.75% MWCNT composite for a load of 30 N at a sliding distance of 1500 m is lower as compared to the base matrix. The SEM micrographs of the worn surfaces revealed the existence of abrasive wear. The improved mechanical and tribological behavior of the magnesium composite is also due to the homogeneous distribution of the hard reinforcement particles along the grain boundaries.
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Affiliation(s)
- G. U. Raju
- Department of Mechanical Engineering, K.L.E. Technological University, Hubballi 580031, India
| | - Vinod Kumar V. Meti
- Department of Automation and Robotics, K.L.E. Technological University, Hubballi 580031, India
| | - N. R. Banapurmath
- Department of Mechanical Engineering, K.L.E. Technological University, Hubballi 580031, India
- Centre of Excellence in Material Science, K.L.E. Technological University, Hubballi 580031, India
| | - T. M. Yunus Khan
- Department of Mechanical Engineering, College of Engineering, King Khalid University, Asir-Abha 61421, Saudi Arabia
| | - I. G. Siddhalingeshwar
- Department of Mechanical Engineering, K.L.E. Technological University, Hubballi 580031, India
| | - Vishal Vaikunte
- Department of Mechanical Engineering, K.L.E. Technological University, Hubballi 580031, India
| | | | | | - A. M. Sajjan
- Centre of Excellence in Material Science, K.L.E. Technological University, Hubballi 580031, India
| | - Adarsh Patil
- Department of Mechanical Engineering, K.L.E. Technological University, Hubballi 580031, India
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Limkatanyu S, Sae-Long W, Mohammad-Sedighi H, Rungamornrat J, Sukontasukkul P, Imjai T, Zhang H. Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems. NANOMATERIALS 2022; 12:nano12101740. [PMID: 35630962 PMCID: PMC9145732 DOI: 10.3390/nano12101740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/17/2022] [Accepted: 05/17/2022] [Indexed: 02/01/2023]
Abstract
This paper proposes a novel nanobar–substrate medium model for static and free vibration analyses of single-walled carbon nanotube (SWCNT) systems embedded in the elastic substrate medium. The modified strain-gradient elasticity theory is utilized to account for the material small-scale effect, while the Gurtin–Murdoch surface theory is employed to represent the surface energy effect. The Winkler foundation model is assigned to consider the interactive mechanism between the nanobar and its surrounding substrate medium. Hamilton’s principle is used to consistently derive the system governing equation, initial conditions, and classical as well as non-classical boundary conditions. Two numerical simulations are employed to demonstrate the essence of the material small-scale effect, the surface energy effect, and the surrounding substrate medium on static and free vibration responses of single-walled carbon nanotube (SWCNT)–substrate medium systems. The simulation results show that the material small-scale effect, the surface energy effect, and the interaction between the substrate and the structure led to a system-stiffness enhancement both in static and free vibration analyses.
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Affiliation(s)
- Suchart Limkatanyu
- Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90112, Thailand;
| | - Worathep Sae-Long
- Civil Engineering Program, School of Engineering, University of Phayao, Phayao 56000, Thailand
- Correspondence:
| | - Hamid Mohammad-Sedighi
- Mechanical Engineering Department, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz 6135783151, Iran;
- Drilling Center of Excellence and Research Center, Shahid Chamran University of Ahvaz, Ahvaz 6135783151, Iran
| | - Jaroon Rungamornrat
- Applied Mechanics and Structures Research Unit, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Piti Sukontasukkul
- Construction and Building Materials Research Center, Department of Civil Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand;
| | - Thanongsak Imjai
- School of Engineering and Technology, Center of Excellence in Sustainable Disaster Management, Walailak University, Nakhon Si Thammarat 80161, Thailand;
| | - Hexin Zhang
- School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh EH14 1DJ, UK;
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Ţălu Ş, Kulesza S, Bramowicz M, Zhuyu L. Surface texture and fractal analysis of cemented carbide cutting tools. Microsc Res Tech 2022; 85:418-424. [PMID: 34322946 DOI: 10.1002/jemt.23886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/27/2021] [Accepted: 07/14/2021] [Indexed: 02/05/2023]
Abstract
This work highlights the usefulness of multi-scale-fractal and surface-texture analysis in the machining of cemented carbide cutting edge by electrolytic-abrasive honing (EAH) process. In order to achieve this, a fresh (untreated) cutting edge sample and the same sample after machining by electrolytic-abrasive honing (treated) were studied upon their characteristics of surface texture and material properties to provide manufacturers a sustainable advantage in strengthening their tools. The surface characteristics of untreated and honed samples have been analyzed by evaluating four similar locations in the regions of each sample. Scanning electron microscopy (SEM) has been used for the characterization of materials surface. It was found that the unprepared cutting edge and the electrolytic-abrasive sharp surface regions of the samples could be distinguished by area scale analysis and surface texture characteristics. The present study will help in improving the life span estimation of the tools and highlight the opportunities for the statistical modeling of lubrication mechanisms between the tool and the workpiece.
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Affiliation(s)
- Ştefan Ţălu
- Technical University of Cluj-Napoca, The Directorate of Research, Development and Innovation Management (DMCDI), Cluj-Napoca, Romania
| | - Slawomir Kulesza
- University of Warmia and Mazury in Olsztyn, Faculty of Technical Sciences, Olsztyn, Poland
| | - Miroslaw Bramowicz
- University of Warmia and Mazury in Olsztyn, Faculty of Technical Sciences, Olsztyn, Poland
| | - Li Zhuyu
- Dalian Polytechnic University, School of Mechanical Engineering and Automation, Dalian, Liaoning, China
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Maity G, Yadav RP, Ojha S, Singhal R, Kanjilal D, Patel SP. Micro‐morphological investigations on wettability of Al‐incorporated
c
‐Si thin films using statistical surface roughness parameters. SURF INTERFACE ANAL 2021. [DOI: 10.1002/sia.7036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gurupada Maity
- Department of Pure and Applied Physics Guru Ghasidas Vishwavidyalaya (A Central University) Bilaspur India
| | - Ram Pratap Yadav
- Department of Physics Deen Dayal Upadhyay Govt. PG College Allahabad India
| | - Sunil Ojha
- Inter University Accelerator Centre New Delhi India
| | - Rahul Singhal
- Department of Physics Malaviya National Institute of Technology Jaipur India
| | | | - Shiv Poojan Patel
- Department of Pure and Applied Physics Guru Ghasidas Vishwavidyalaya (A Central University) Bilaspur India
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Multifractal analysis of human canine teeth at nano scale: atomic force microscopy studies. INTERNATIONAL NANO LETTERS 2020. [DOI: 10.1007/s40089-019-00293-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractThe aim of the present study is to explore the 3-D micromorphology of human canine teeth materials using multifractal analysis through atomic force microscopy (AFM). The 3-D surfaces of ten extracted canine teeth of a group of 40 year old men were studied (enamel, inter enamel, inter dentin, and cementum) by AFM images in tapping mode and on square areas of 1 μm × 1 μm (512 × 512 points). The AFM images and surface multifractal analysis confirm the dependency of surface micromorphology to their structure–property of these materials across the length scales of the teeth structural architecture. Surface statistical parameters and hence, multifractal approach have been considered as reliable and sensitive tools for quantifying the 3-D surface microtexture changes of human canine teeth materials. The surface of inter dentin had the most irregular topography (the width spectrum Δα = 2.8361, value bigger than all the other Δα sample values), while the most regular topography (the width spectrum Δα = 2.6804, value lower than all the other sample values) was found in cementum. It has been concluded that multifractal analyses can be used as mathematical tools to explore the 3-D micromorphology of human canine teeth materials.
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Multifractal and optical bandgap characterization of Ta2O5 thin films deposited by electron gun method. OPTICAL AND QUANTUM ELECTRONICS 2020. [DOI: 10.1007/s11082-019-2173-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Țălu Ș, Ghaderi A, Stępień K, Mwema FM. Advanced Micromorphology Analysis of Cu/Fe NPs Thin Films. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/611/1/012016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Ţălu Ş, Morozov IA, Yadav RP. Multifractal analysis of sputtered indium tin oxide thin film surfaces. APPLIED SURFACE SCIENCE 2019. [DOI: 10.1016/j.apsusc.2019.04.170] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Stach S, Ţălu Ş, Trabattoni S, Tavazzi S, Głuchaczka A, Siek P, Zając J, Giovanzana S. Morphological Properties of Siloxane-Hydrogel Contact Lens Surfaces. Curr Eye Res 2017; 42:498-505. [PMID: 27610546 DOI: 10.1080/02713683.2016.1217546] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE The aim of this study was to quantitatively characterize the micromorphology of contact lens (CL) surfaces using atomic force microscopy (AFM) and multifractal analysis. MATERIALS AND METHODS AFM and multifractal analysis were used to characterize the topography of new and worn siloxane-hydrogel CLs made of Filcon V (I FDA group). CL surface roughness was studied by AFM in intermittent-contact mode, in air, on square areas of 25 and 100 μm2, by using a Nanoscope V MultiMode (Bruker). Detailed surface characterization of the surface topography was obtained using statistical parameters of 3-D (three-dimensional) surface roughness, in accordance with ISO 25178-2: 2012. RESULTS Before wear, the surface was found to be characterized by out-of-plane and sharp structures, whilst after a wear of 8 h, two typical morphologies were observed. One morphology (sharp type) has a similar aspect as the unworn CLs and the other morphology (smooth type) is characterized by troughs and bumpy structures. The analysis of the AFM images revealed a multifractal geometry. The generalized dimension Dq and the singularity spectrum f(α) provided quantitative values that characterize the local scale properties of CL surface geometry at nanometer scale. CONCLUSIONS Surface statistical parameters deduced by multifractal analysis can be used to assess the CL micromorphology and can be used by manufacturers in developing CLs with improved surface characteristics. These parameters can also be used in understanding the tribological interactions of the back surface of the CL with the corneal surface and the front surface of the CL with the under-surface of the eyelid (friction, wear, and micro-elastohydrodynamic lubrication at a nanometer scale).
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Affiliation(s)
- Sebastian Stach
- a Department of Biomedical Computer Systems , University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics , Sosnowiec , Poland
| | - Ştefan Ţălu
- b Department of Automotive Engineering and Transportation, Faculty of Mechanical Engineering, Discipline of Descriptive Geometry and Engineering Graphics , Technical University of Cluj-Napoca , Cluj-Napoca , Cluj , Romania
| | - Silvia Trabattoni
- c Department of Materials Science , University of Milano Bicocca , Milano , Italy
| | - Silvia Tavazzi
- c Department of Materials Science , University of Milano Bicocca , Milano , Italy
| | - Alicja Głuchaczka
- a Department of Biomedical Computer Systems , University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics , Sosnowiec , Poland
| | - Patrycja Siek
- a Department of Biomedical Computer Systems , University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics , Sosnowiec , Poland
| | - Joanna Zając
- a Department of Biomedical Computer Systems , University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics , Sosnowiec , Poland
| | - Stefano Giovanzana
- d Department of Materials Science , University of Milano Bicocca, Piazza dell'Ateneo Nuovo , Milano , Italy
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11
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Structural Properties of Silicon Carbide Nano Structures Grown on Quartz Substrate Using CVD Method. THEOR EXP CHEM+ 2016. [DOI: 10.1007/s11237-016-9477-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Ţălu Ş, Stach S, Kaczmarska M, Fornal M, Grodzicki T, Pohorecki W, Burda K. Multifractal characterization of morphology of human red blood cells membrane skeleton. J Microsc 2016; 262:59-72. [PMID: 27002485 DOI: 10.1111/jmi.12342] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 09/29/2015] [Indexed: 02/05/2023]
Abstract
The purpose of this paper is to show applicability of multifractal analysis in investigations of the morphological changes of ultra-structures of red blood cells (RBCs) membrane skeleton measured using atomic force microscopy (AFM). Human RBCs obtained from healthy and hypertensive donors as well as healthy erythrocytes irradiated with neutrons (45 μGy) were studied. The membrane skeleton of the cells was imaged using AFM in a contact mode. Morphological characterization of the three-dimensional RBC surfaces was realized by a multifractal method. The nanometre scale study of human RBCs surface morphology revealed a multifractal geometry. The generalized dimensions Dq and the singularity spectrum f(α) provided quantitative values that characterize the local scale properties of their membrane skeleton organization. Surface characterization was made using areal ISO 25178-2: 2012 topography parameters in combination with AFM topography measurement. The surface structure of human RBCs is complex with hierarchical substructures resulting from the organization of the erythrocyte membrane skeleton. The analysed AFM images confirm a multifractal nature of the surface that could be useful in histology to quantify human RBC architectural changes associated with different disease states. In case of very precise measurements when the red cell surface is not wrinkled even very fine differences can be uncovered as was shown for the erythrocytes treated with a very low dose of ionizing radiation.
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Affiliation(s)
- Ş Ţălu
- Technical University of Cluj-Napoca, Faculty of Mechanical Engineering, Department of AET, Discipline of Descriptive Geometry and Engineering Graphics, Cluj-Napoca, Cluj, Romania
| | - S Stach
- University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics, Department of Biomedical Computer Systems, Sosnowiec, Poland
| | - M Kaczmarska
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Department of Medical Physics and Biophysics, Kraków, al. Mickiewicza, Poland
| | - M Fornal
- Jagiellonian University, Collegium Medicum, Department of Internal Medicine and Gerontology, Kraków, ul. Sniadeckich, Poland
| | - T Grodzicki
- Jagiellonian University, Collegium Medicum, Department of Internal Medicine and Gerontology, Kraków, ul. Sniadeckich, Poland
| | - W Pohorecki
- AGH University of Science and Technology, Faculty of Energy and Fuels, Department of Nuclear Energy, Kraków, al. Mickiewicza, Poland
| | - K Burda
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Department of Medical Physics and Biophysics, Kraków, al. Mickiewicza, Poland
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Ţălu Ş, Bramowicz M, Kulesza S, Solaymani S, Shafikhani A, Ghaderi A, Ahmadirad M. Gold nanoparticles embedded in carbon film: Micromorphology analysis. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2015.12.029] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Ţălu Ş, Contreras–Bulnes R, Morozov IA, Rodríguez-Vilchis LE, Montoya-Ayala G. Surface nanomorphology of human dental enamel irradiated with an Er:YAG laser. LASER PHYSICS 2015. [DOI: 10.1088/1054-660x/26/2/025601] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Ţălu Ş, Stach S, Raoufi D, Hosseinpanahi F. Film thickness effect on fractality of tin-doped In2O3 thin films. ELECTRONIC MATERIALS LETTERS 2015. [DOI: 10.1007/s13391-015-4280-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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Arman A, Ţălu Ş, Luna C, Ahmadpourian A, Naseri M, Molamohammadi M. Micromorphology characterization of copper thin films by AFM and fractal analysis. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 2015. [DOI: 10.1007/s10854-015-3628-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Ţălu Ş, Bramowicz M, Kulesza S, Shafiekhani A, Ghaderi A, Mashayekhi F, Solaymani S. Microstructure and Tribological Properties of FeNPs@a-C:H Films by Micromorphology Analysis and Fractal Geometry. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02449] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ştefan Ţălu
- Faculty of Mechanical
Engineering, Department of AET, Discipline of Descriptive Geometry
and Engineering Graphics, Technical University of Cluj-Napoca, 103−105
B-dul Muncii Street, 400641 Cluj-Napoca, Romania
| | - Miroslaw Bramowicz
- Faculty
of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Poland
| | - Slawomir Kulesza
- Faculty of Mathematics
and Computer Science, University of Warmia and Mazury in Olsztyn, Sloneczna 54, 10-710 Olsztyn, Poland
| | - Azizollah Shafiekhani
- School of Physics, Institute for Research in Fundamental Sciences, P.O. Box 19395-5531, Tehran, Iran
- Physics Department, Alzahra University, P.O. Box 1993891167, Tehran, Iran
| | - Atefeh Ghaderi
- Young Researchers and Elite Club,
Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Fatemeh Mashayekhi
- Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Shahram Solaymani
- Young Researchers and Elite Club,
Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
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Stach S, Garczyk Ż, Ţălu Ş, Solaymani S, Ghaderi A, Moradian R, Nezafat NB, Elahi SM, Gholamali H. Stereometric Parameters of the Cu/Fe NPs Thin Films. THE JOURNAL OF PHYSICAL CHEMISTRY C 2015. [DOI: 10.1021/acs.jpcc.5b04676] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sebastian Stach
- University of Silesia, Faculty of Computer Science
and Materials Science, Institute of Informatics, Department of Biomedical
Computer Systems, Będzińska
39, 41-205 Sosnowiec, Poland
| | - Żaneta Garczyk
- University of Silesia, Faculty of Computer Science
and Materials Science, Institute of Informatics, Department of Biomedical
Computer Systems, Będzińska
39, 41-205 Sosnowiec, Poland
| | - Ştefan Ţălu
- Technical University of Cluj-Napoca, Faculty of Mechanical
Engineering, Department of AET, Discipline of Descriptive Geometry
and Engineering Graphics, 103-105 B-dul Muncii Street, Cluj-Napoca 400641, Cluj, Romania
| | - Shahram Solaymani
- Young
Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Atefeh Ghaderi
- Physics
Department, Faculty of Science, Razi University, Kermanshah, Iran
| | - Rostam Moradian
- Physics
Department, Faculty of Science, Razi University, Kermanshah, Iran
- Nano
Science and Technology Research Center, Razi University, Kermanshah, Iran
| | - Negin Beryani Nezafat
- Young
Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Seyed Mohammad Elahi
- Plasma Physics
Research Centre, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hedieh Gholamali
- Plasma Physics
Research Centre, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Ţălu Ş, Stach S, Solaymani S, Moradian R, Ghaderi A, Hantehzadeh MR, Elahi SM, Garczyk Ż, Izadyar S. Multifractal spectra of atomic force microscope images of Cu/Fe nanoparticles based films thickness. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Three-Dimensional Surface Parameters and Multi-Fractal Spectrum of Corroded Steel. PLoS One 2015; 10:e0131361. [PMID: 26121468 PMCID: PMC4485623 DOI: 10.1371/journal.pone.0131361] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 06/01/2015] [Indexed: 11/19/2022] Open
Abstract
To study multi-fractal behavior of corroded steel surface, a range of fractal surfaces of corroded surfaces of Q235 steel were constructed by using the Weierstrass-Mandelbrot method under a high total accuracy. The multi-fractal spectrum of fractal surface of corroded steel was calculated to study the multi-fractal characteristics of the W-M corroded surface. Based on the shape feature of the multi-fractal spectrum of corroded steel surface, the least squares method was applied to the quadratic fitting of the multi-fractal spectrum of corroded surface. The fitting function was quantitatively analyzed to simplify the calculation of multi-fractal characteristics of corroded surface. The results showed that the multi-fractal spectrum of corroded surface was fitted well with the method using quadratic curve fitting, and the evolution rules and trends were forecasted accurately. The findings can be applied to research on the mechanisms of corroded surface formation of steel and provide a new approach for the establishment of corrosion damage constitutive models of steel.
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Ţălu Ş, Stach S, Ghodselahi T, Ghaderi A, Solaymani S, Boochani A, Garczyk Ż. Topographic Characterization of Cu-Ni NPs @ a-C:H Films by AFM and Multifractal Analysis. J Phys Chem B 2015; 119:5662-70. [PMID: 25839675 DOI: 10.1021/acs.jpcb.5b00042] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In the present work three-dimensional (3-D) surface topography of Cu-Ni nanoparticles in hydrogenated amorphous carbon (Cu-Ni NPs @ a-C:H) with constant thickness of Cu and three thicknesses of Ni prepared by RF-Plasma Enhanced Chemical Vapor Deposition (RF-PECVD) system were investigated. The thin films of Cu-Ni NPs @ a-C:H with constant thickness of Cu and three thicknesses of Ni deposited by radio frequency (RF)-sputtering and RF-PECVD systems, were characterized. To determine the mass thickness and atomic structure of the films, the Rutherford backscattering spectroscopy (RBS) spectra was applied. The absorption spectra were applied to study localized surface plasmon resonance (LSPR) peaks of Cu-Ni NPs (observed around 608 nm in visible spectra), which is widened and shifted to lower wavelengths as the thickness of Ni over layer increases, and their changes are also evaluated by the 3-D surface topography. These nanostructures were investigated over square areas of 1 μm × 1 μm using atomic force microscopy (AFM) and multifractal analysis. Topographic characterization of surface samples (in amplitude, spatial distribution, and pattern of surface characteristics) highlighted 3-D surfaces with multifractal features which can be quantitatively estimated by the multifractal measures. The 3-D surface topography Cu-Ni NPs @ a-C:H with constant thickness of Cu and three thicknesses of Ni prepared by RF-PECVD system can be characterized using the multifractal geometry in correlation with the surface statistical parameters.
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Affiliation(s)
- Ştefan Ţălu
- †Technical University of Cluj-Napoca, Faculty of Mechanical Engineering, Department of AET, Discipline of Descriptive Geometry and Engineering Graphics, 103-105 B-dul Muncii St., Cluj-Napoca 400641, Cluj, Romania
| | - Sebastian Stach
- ‡University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics, Department of Biomedical Computer Systems, Będzińska 39, 41-205 Sosnowiec, Poland
| | | | - Atefeh Ghaderi
- ∥Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Shahram Solaymani
- ∥Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Arash Boochani
- ⊥Physics Department, Islamic Azad University, Kermanshah Branch, Kermanshah, Iran
| | - Żaneta Garczyk
- ‡University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics, Department of Biomedical Computer Systems, Będzińska 39, 41-205 Sosnowiec, Poland
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Ţălu Ş, Stach S, Lainović T, Vilotić M, Blažić L, Alb SF, Kakaš D. Surface roughness and morphology of dental nanocomposites polished by four different procedures evaluated by a multifractal approach. APPLIED SURFACE SCIENCE 2015. [DOI: 10.1016/j.apsusc.2014.12.120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ţălu Ş, Stach S, Alb SF, Salerno M. Multifractal characterization of a dental restorative composite after air-polishing. CHAOS SOLITONS & FRACTALS 2015. [DOI: 10.1016/j.chaos.2014.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ţălu Ş, Stach S, Ikram M, Pathak D, Wagner T, Nunzi JM. Surface Roughness Characterization of ZnO: TiO2-Organic Blended Solar Cells Layers by Atomic Force Microscopy and Fractal Analysis. INTERNATIONAL JOURNAL OF NANOSCIENCE 2014. [DOI: 10.1142/s0219581x14500203] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The objective of this work is to quantitatively characterize the 3D complexity of ZnO : TiO 2-organic blended solar cells layers by atomic force microscopy and fractal analysis. ZnO : TiO 2-organic blended solar cells layers were investigated by AFM in tapping-mode in air, on square areas of 25 μm2. A detailed methodology for ZnO : TiO 2-organic blended solar cells layers surface fractal characterization, which may be applied for AFM data, is presented. Detailed surface characterization of the surface topography was obtained using statistical parameters, according with ISO 25178-2: 2012. The fractal dimensions Df values (all with average ± standard deviation), obtained with morphological envelopes method, for: blend D1 ( P 3 HT : PCBM : ZnO : TiO 2 blend with ratio 1:0.35:0.175:0.175 mg in 1 ml of Chlorobenzene) is Df = 2.55 ± 0.01; and for blend D2 ( P 3 HT : PCBM : ZnO : TiO 2 blend with ratio 1:0.55:0.075:0.075 mg in 1 ml of Chlorobenzene) is Df = 2.45 ± 0.01. Denoting the ratios in 1 ml of Chlorobenzene with D1 and D2 articles. The 3D surface roughness of samples revealed a fractal structure at nanometer scale. Fractal and AFM analysis may assist manufacturers in developing ZnO : TiO 2-organic blended solar cells layers with better surface characteristics and provides different yet complementary information to that offered by traditional surface statistical parameters.
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Affiliation(s)
- Ştefan Ţălu
- Technical University of Cluj-Napoca, Faculty of Mechanical Engineering, Department of AET, Discipline of Descriptive Geometry and Engineering Graphics, 103-105 B-dul Muncii St., Cluj-Napoca 400641, Cluj, Romania
| | - Sebastian Stach
- University of Silesia, Faculty of Computer Science and Materials Science, Institute of Informatics, Department of Biomedical Computer Systems, Będzińska 39, 41-205 Sosnowiec, Poland
| | - Muhammad Ikram
- Department of Physics and Chemistry, Engineering Physics and Astronomy, Queens University, Kingston, Ontario, K7L 3N6, Canada
| | - Dinesh Pathak
- University of Pardubice, Faculty of Chemical Technology, Department of General and Inorganic, Chemistry, Pardubice, Studentska 573, Pardubice 532 10, Czech Republic
| | - Tomas Wagner
- University of Pardubice, Faculty of Chemical Technology, Department of General and Inorganic, Chemistry, Pardubice, Studentska 573, Pardubice 532 10, Czech Republic
| | - Jean-Michel Nunzi
- Department of Physics and Chemistry, Engineering Physics and Astronomy, Queens University, Kingston, Ontario, K7L 3N6, Canada
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AFM imaging and fractal analysis of surface roughness of AlN epilayers on sapphire substrates. APPLIED SURFACE SCIENCE 2014. [DOI: 10.1016/j.apsusc.2014.05.086] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ţălu Ş, Stach S, Mahajan A, Pathak D, Wagner T, Kumar A, Bedi RK. Multifractal analysis of drop-casted copper (II) tetrasulfophthalocyanine film surfaces on the indium tin oxide substrates. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5492] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ştefan Ţălu
- Faculty of Mechanical Engineering, Department of AET, Discipline of Descriptive Geometry and Engineering Graphics; Technical University of Cluj-Napoca; 103-105 B-dul Muncii St. Cluj-Napoca 400641 Cluj Romania
| | - Sebastian Stach
- Faculty of Computer Science and Materials Science, Department of Biomedical Computer Systems, Institute of Informatics; University of Silesia; Będzińska 39 41-205 Sosnowiec Poland
| | - Aman Mahajan
- Material Science Research Laboratory, Department of Physics; Guru Nanak Dev University; Amritsar 143005 India
| | - Dinesh Pathak
- Faculty of Chemical Technology, Department of General and Inorganic Chemistry; University of Pardubice; Pardubice, Studentska 573 Pardubice 532 10 Czech Republic
| | - Tomas Wagner
- Faculty of Chemical Technology, Department of General and Inorganic Chemistry; University of Pardubice; Pardubice, Studentska 573 Pardubice 532 10 Czech Republic
| | - Anshul Kumar
- Material Science Research Laboratory, Department of Physics; Guru Nanak Dev University; Amritsar 143005 India
| | - Ratish Kumar Bedi
- Material Science Research Laboratory, Department of Physics; Guru Nanak Dev University; Amritsar 143005 India
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