Pub Date : 2023-11-06DOI: 10.1051/epjap/2023230062
V Madhu Mohan, T Suvarna, P. Balaji Bhargav, P. Mohan Babu
Lithiated CuO (Li-CuO) micro-structures were synthesized by the hydrothermal method using KOH as a reactive solution. The structural properties of pure Li-CuO and other KOH-reacted CuO samples were analysed using XRD analysis. Various vibrational bands were observed by FTIR spectra analysis. The SEM images indicated the formation of Li-CuO hexagonal rods of 1-2 µm dimension. The cyclic efficiencies of pure Li-CuO and 12 M KOH surfactant Li-CuO microstructures were observed to be 78.5% and 91.2%, respectively. The battery discharge characteristics revealed that after 50 cycles, the specific capacity of the battery based on a pure Li-CuO microstructure electrode showed 97 mAh g-1 whereas KOH surfactant Li-CuO microstructures electrode showed 150 mAh g-1 at a constant current density of 17.79 mA g-1 with a 1.0–4.0 V vs. Li/Li+ potential range. The enhancement of specific capacity and its stability due to a well-defined hexagonal crystal structure leads to increased Li+ ion kinetics during the insertion and extraction processes of batteries.
以KOH为反应溶液，采用水热法制备了锂化CuO (Li-CuO)微结构。用XRD分析了纯Li-CuO和其他koh反应的CuO样品的结构性质。FTIR光谱分析观察到不同的振动带。SEM图像显示形成了尺寸为1 ~ 2µm的Li-CuO六角形棒。纯Li-CuO和12 M KOH表面活性剂Li-CuO微观结构的循环效率分别为78.5%和91.2%。电池放电特性表明，循环50次后，纯Li- cuo微结构电极的比容量为97 mAh g-1，而KOH表面活性剂Li- cuo微结构电极在恒流密度为17.79 mA g-1、1.0 ~ 4.0 V vs. Li/Li+电位范围下的比容量为150 mAh g-1。明确的六方晶体结构提高了比容量及其稳定性，从而提高了电池插入和提取过程中的Li+离子动力学。
{"title":"Novel KOH treated Li-CuO as anode for the Application of Lithium-Ion Batteries","authors":"V Madhu Mohan, T Suvarna, P. Balaji Bhargav, P. Mohan Babu","doi":"10.1051/epjap/2023230062","DOIUrl":"https://doi.org/10.1051/epjap/2023230062","url":null,"abstract":"Lithiated CuO (Li-CuO) micro-structures were synthesized by the hydrothermal method using KOH as a reactive solution. The structural properties of pure Li-CuO and other KOH-reacted CuO samples were analysed using XRD analysis. Various vibrational bands were observed by FTIR spectra analysis. The SEM images indicated the formation of Li-CuO hexagonal rods of 1-2 µm dimension. The cyclic efficiencies of pure Li-CuO and 12 M KOH surfactant Li-CuO microstructures were observed to be 78.5% and 91.2%, respectively. The battery discharge characteristics revealed that after 50 cycles, the specific capacity of the battery based on a pure Li-CuO microstructure electrode showed 97 mAh g-1 whereas KOH surfactant Li-CuO microstructures electrode showed 150 mAh g-1 at a constant current density of 17.79 mA g-1 with a 1.0–4.0 V vs. Li/Li+ potential range. The enhancement of specific capacity and its stability due to a well-defined hexagonal crystal structure leads to increased Li+ ion kinetics during the insertion and extraction processes of batteries.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135585477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-23DOI: 10.1051/epjap/2023230072
Julien Thouin, Malyk Benmouffok, Pierre Freton, Jean-Jacques Gonzalez
In thermal plasma spectroscopy, the Boltzmann plot method is particularly popular for measuring plasma temperature independently of pressure. In order to better understand the results of the Botzmann plot measurements performed with atomic oxygen lines on our thermal plasma, which has a non-negligible thickness, a Python code was developed based on the assumption of local thermodynamic equilibrium (LTE) and the calculated plasma composition and properties. This code allows us to simulate a measurement of the oxygen line intensity resulting from an integration over the plasma thickness in a chosen direction for a given temperature profile. From these a simulated Boltzmann plot gave us a simulated temperature. It resulted that this measurement is governed by the maximum of the temperature profile until the maximum temperature exceeds that of the maximum emissivity of the atomic oxygen lines. Above that temperature a limitation was observed, it is possible to measure higher temperatures but the interpretation of that measurement is difficult. Plasma pressure has a limited effect on this limitation. When no limitation is observed, the temperature measurement from the Boltzmann plot method that we simulated is always at least 90% of the maximum of the temperature profile.
{"title":"Interpretation of temperature measurements by the Boltzmann plot method on spatially integrated plasma oxygen spectral lines","authors":"Julien Thouin, Malyk Benmouffok, Pierre Freton, Jean-Jacques Gonzalez","doi":"10.1051/epjap/2023230072","DOIUrl":"https://doi.org/10.1051/epjap/2023230072","url":null,"abstract":"In thermal plasma spectroscopy, the Boltzmann plot method is particularly popular for measuring plasma temperature independently of pressure. In order to better understand the results of the Botzmann plot measurements performed with atomic oxygen lines on our thermal plasma, which has a non-negligible thickness, a Python code was developed based on the assumption of local thermodynamic equilibrium (LTE) and the calculated plasma composition and properties. This code allows us to simulate a measurement of the oxygen line intensity resulting from an integration over the plasma thickness in a chosen direction for a given temperature profile. From these a simulated Boltzmann plot gave us a simulated temperature. It resulted that this measurement is governed by the maximum of the temperature profile until the maximum temperature exceeds that of the maximum emissivity of the atomic oxygen lines. Above that temperature a limitation was observed, it is possible to measure higher temperatures but the interpretation of that measurement is difficult. Plasma pressure has a limited effect on this limitation. When no limitation is observed, the temperature measurement from the Boltzmann plot method that we simulated is always at least 90% of the maximum of the temperature profile.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135365761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this article, Mg impurity effect on structural, electronic, magnetic and optical properties ofC3N monolayer have been investigated using first principles calculations in the density functional theory framework utilizing Wien2K computational code. The results provide that the impurity added to the C3N monolayer changes the nature of the C3N monolayer to create magnetic half-metallic properties with 0.99 magnetization.By investigating the mechanical stability of these two structures, it is observed that the pure C3N structure is more stable than the Mg-doped structure.Moreover, optical properties such as dielectric function, reflection coefficient, energy loss function, absorption coefficient and optical conductivity were calculated. The pure C3N monolayer and the C3N with Mg impurity are both optically anisotropic, leading to birefringence for the pure and doped states. The results also provide a basic understanding of the design of composite structures applied in nanodevices based on two-dimensional advanced materials which is used in the spintronics industry
{"title":"Calculation of structural, electronic, magnetic and optical properties of C3N monolayer substituted with magnesium","authors":"Erfan Cholaki, Borhan Arghavani Nia, Sahar Rezaee, Sajad Parsamehr","doi":"10.1051/epjap/2023230147","DOIUrl":"https://doi.org/10.1051/epjap/2023230147","url":null,"abstract":"In this article, Mg impurity effect on structural, electronic, magnetic and optical properties ofC3N monolayer have been investigated using first principles calculations in the density functional theory framework utilizing Wien2K computational code. The results provide that the impurity added to the C3N monolayer changes the nature of the C3N monolayer to create magnetic half-metallic properties with 0.99 magnetization.By investigating the mechanical stability of these two structures, it is observed that the pure C3N structure is more stable than the Mg-doped structure.Moreover, optical properties such as dielectric function, reflection coefficient, energy loss function, absorption coefficient and optical conductivity were calculated. The pure C3N monolayer and the C3N with Mg impurity are both optically anisotropic, leading to birefringence for the pure and doped states. The results also provide a basic understanding of the design of composite structures applied in nanodevices based on two-dimensional advanced materials which is used in the spintronics industry","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135944027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Laser ablation (LA) in a liquid was used for loading clusters on various supporting materials. An advantage of LA in a liquid is that the cluster generation conditions are almost independent of the material. Gold, silver, and copper clusters were implanted in the pores of zeolite particles using a laser ablation of an Au, Ag, or a Cu plate in water dispersed with zeolite ZSM-5 particles. We found the evidence for Au and Ag clusters trapped in the pores of the zeolite through LA in water that the samples fluoresced between 400 and 500 nm under 350 nm excitation after calcination at 300 ℃. However, the sample with Cu did not exhibit PL because the Cu particles produced by LA in water were oxidized. The Au and Ag clusters were estimated to be composed of ~6 atoms based on the relationship between the HOMO–LUMO energy gap and the cluster size predicted using the jellium model.
{"title":"Photoluminescence from metal clusters formed in the pores of zeolite by pulsed laser ablation in a liquid phase","authors":"Yoshihiro Takeda, Namiki Toyama, Kazuhiro Egashira","doi":"10.1051/epjap/2023230064","DOIUrl":"https://doi.org/10.1051/epjap/2023230064","url":null,"abstract":"Laser ablation (LA) in a liquid was used for loading clusters on various supporting materials. An advantage of LA in a liquid is that the cluster generation conditions are almost independent of the material. Gold, silver, and copper clusters were implanted in the pores of zeolite particles using a laser ablation of an Au, Ag, or a Cu plate in water dispersed with zeolite ZSM-5 particles. We found the evidence for Au and Ag clusters trapped in the pores of the zeolite through LA in water that the samples fluoresced between 400 and 500 nm under 350 nm excitation after calcination at 300 ℃. However, the sample with Cu did not exhibit PL because the Cu particles produced by LA in water were oxidized. The Au and Ag clusters were estimated to be composed of ~6 atoms based on the relationship between the HOMO–LUMO energy gap and the cluster size predicted using the jellium model.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135963932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-19DOI: 10.1051/epjap/2023230134
Jonathan Agil, Bruno Letourneur, Sylvie George, Rémy Battesti, Carlo Rizzo
In this paper, first we present a review of experimental data corresponding to phase retardation per reflection of interferential mirrors. Then, we report our new measurements on both commercial and tailor-made mirrors. To be able to measure the phase retardation as a function of the number of layers, additional pairs of layers are deposited on some of the mirrors. The results obtained with this special set of mirrors allow us to fully characterise the waveplate associated with the additional pairs of layers. We finally implemented a computational study whose results are compared with the experimental ones. Thanks to the additional layers, we have achieved reflectivity never measured before at $lambda=1064$~nm, with an associated finesse of $mathcal{F}=895~000$.
{"title":"Characterisation of the waveplate associated to layers in interferential mirrors","authors":"Jonathan Agil, Bruno Letourneur, Sylvie George, Rémy Battesti, Carlo Rizzo","doi":"10.1051/epjap/2023230134","DOIUrl":"https://doi.org/10.1051/epjap/2023230134","url":null,"abstract":"In this paper, first we present a review of experimental data corresponding to phase retardation per reflection of interferential mirrors. Then, we report our new measurements on both commercial and tailor-made mirrors. To be able to measure the phase retardation as a function of the number of layers, additional pairs of layers are deposited on some of the mirrors. The results obtained with this special set of mirrors allow us to fully characterise the waveplate associated with the additional pairs of layers. We finally implemented a computational study whose results are compared with the experimental ones. Thanks to the additional layers, we have achieved reflectivity never measured before at $lambda=1064$~nm, with an associated finesse of $mathcal{F}=895~000$.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-14DOI: 10.1051/epjap/2023230099
Youssef El Arfaoui, Mohammed Khenfouch, Nabil Habiballah
In this work, we used both DFT and TDDFT to investigate the structural, electronic and optical properties of the hybrid organic-inorganic FASnI3 perovskite. Indeed, we apply the DFT approach implemented under Quantum Espresso code to investigate and discuss the solar perovskite FASnI3 applying the calculation approximations: GGA-PBE and GGA-PBESol. When applying the PBE approximation, the band structure demonstrates that this perovskite has a direct band gap of (1.36eV), which agrees well with the results of the existing experiments. The DOS and PDOS have been illustrated and discussed for the two cases. We have also examined of including the spin-orbit coupling effect on the band gap of this material, in addition, the optical properties of the this FASnI3 have been computing and discussed. The band gap and optical properties allowed us to assume that this material could potentially be the best match for photovoltaic use. Further, applying SCAPS software, an n-i-p planar FASnI3 solar perovskite device was modeled and simulated. The device performances have simulated with (ZnO, ZnS, ZnSe, TiO2 and CdS) materials as an Electron Transport Layers. It is found that various factors influencing the device performance such as the thickness of the FASnI3, different ETLs, the impact of the temperature, are also investigated and discussed. In addition, the impact of the active layer defect level and doping level were examined. The simulation results demonstrates that high efficiency of 28.13% can be produced with an absorber thickness of around 600nm, and a total defect density of 1014cm-3 with (ZnO) as an ETL at a temperature of 300k. Finally, these theoretical simulation results could pave the path to design and fabricate, efficient lead-free PSCs.
{"title":"DFT and SCAPS-1D calculations of FASnI3-based perovskite solar cell using ZnO as an electron transport layer","authors":"Youssef El Arfaoui, Mohammed Khenfouch, Nabil Habiballah","doi":"10.1051/epjap/2023230099","DOIUrl":"https://doi.org/10.1051/epjap/2023230099","url":null,"abstract":"In this work, we used both DFT and TDDFT to investigate the structural, electronic and optical properties of the hybrid organic-inorganic FASnI3 perovskite. Indeed, we apply the DFT approach implemented under Quantum Espresso code to investigate and discuss the solar perovskite FASnI3 applying the calculation approximations: GGA-PBE and GGA-PBESol. When applying the PBE approximation, the band structure demonstrates that this perovskite has a direct band gap of (1.36eV), which agrees well with the results of the existing experiments. The DOS and PDOS have been illustrated and discussed for the two cases. We have also examined of including the spin-orbit coupling effect on the band gap of this material, in addition, the optical properties of the this FASnI3 have been computing and discussed. The band gap and optical properties allowed us to assume that this material could potentially be the best match for photovoltaic use. Further, applying SCAPS software, an n-i-p planar FASnI3 solar perovskite device was modeled and simulated. The device performances have simulated with (ZnO, ZnS, ZnSe, TiO2 and CdS) materials as an Electron Transport Layers. It is found that various factors influencing the device performance such as the thickness of the FASnI3, different ETLs, the impact of the temperature, are also investigated and discussed. In addition, the impact of the active layer defect level and doping level were examined. The simulation results demonstrates that high efficiency of 28.13% can be produced with an absorber thickness of around 600nm, and a total defect density of 1014cm-3 with (ZnO) as an ETL at a temperature of 300k. Finally, these theoretical simulation results could pave the path to design and fabricate, efficient lead-free PSCs.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135488617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Non-Hermitian degeneracies, also known as exceptional points, have recently attracted increased attention due to their enhanced sensitivity and distinct topological features. We realize the non-Hermitian system experimentally using four coupled microwave meta-atoms with asymmetric losses. By tuning eigenfrequencies and dissipative losses of meta-atoms, we obtain both theoretically and experimentally that multiple EPs can collide and merge, leading to higher-order singularities much richer than those seen in two-state systems. These findings are expected to enrich our understanding of EP physics and provide a robust foundation for the exploration of high-order EP applications.
{"title":"Experimental study of the high-order exceptional points in a four-state non-Hermitian microwave meta-atoms system","authors":"Yaqiong Ding ，Xiaoyu Liu, Yuanwei Tong, Lijuan Dong","doi":"10.1051/epjap/2023230155","DOIUrl":"https://doi.org/10.1051/epjap/2023230155","url":null,"abstract":"Non-Hermitian degeneracies, also known as exceptional points, have recently attracted increased attention due to their enhanced sensitivity and distinct topological features. We realize the non-Hermitian system experimentally using four coupled microwave meta-atoms with asymmetric losses. By tuning eigenfrequencies and dissipative losses of meta-atoms, we obtain both theoretically and experimentally that multiple EPs can collide and merge, leading to higher-order singularities much richer than those seen in two-state systems. These findings are expected to enrich our understanding of EP physics and provide a robust foundation for the exploration of high-order EP applications.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136054028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1051/epjap/2023230186
Hamid Oughaddou, Abdelkader Kara, Nabil Rochdi, Yannick J. Dappe, Laurene Tetard
{"title":"Special issue on advances in renewable energies, materials and technology","authors":"Hamid Oughaddou, Abdelkader Kara, Nabil Rochdi, Yannick J. Dappe, Laurene Tetard","doi":"10.1051/epjap/2023230186","DOIUrl":"https://doi.org/10.1051/epjap/2023230186","url":null,"abstract":"","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135610248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1051/EPJAP/2021210110
L. Brès, N. Gherardi, N. Naudé, B. Rives
Surface activation of Carbon Fiber Reinforced Polymers (CFRP) using (Poly-EtherEtherKetone) (PEEK) matrices is required to achieve strong and long-term adherent painting on the composite. Among the different techniques, an industrial atmospheric pressure remote plasma has been used in this work to treat PEEK CFRP surfaces. The characterization of this device by means of electrical diagnostics related to the effect of such post-discharge on the surface modifications is discussed. Firstly, electrical characteristics of the discharge show fairly high currents associated to high voltages which suggest a nonestablished and cold arc. Power consumed by the electrical supply associated to post-discharge length and surface temperatures allowed a better understanding of the industrial device. Secondly, the effects of plasma on surface chemistry and topography are analyzed by water contact angle measurements, X-ray Photoelectron Spectroscopy (XPS) and Atomic Force Microscopy (AFM). Investigations showed that treated surfaces exhibited better hydrophilicity mainly due to an incorporation of oxygen containing groups (up to 8.4% more) under air plasma whereas an increase of the nanoroughness and specific surface is preponderant under nitrogen plasma. Different hydrophilic capabilities of the surface obtained in air and nitrogen gas plasmas highlight a potential optimization of activation performances according to industrial specification.
{"title":"Experimental investigations of a remote atmospheric pressure plasma by electrical diagnostics and related effects on polymer composite surfaces","authors":"L. Brès, N. Gherardi, N. Naudé, B. Rives","doi":"10.1051/EPJAP/2021210110","DOIUrl":"https://doi.org/10.1051/EPJAP/2021210110","url":null,"abstract":"Surface activation of Carbon Fiber Reinforced Polymers (CFRP) using (Poly-EtherEtherKetone) (PEEK) matrices is required to achieve strong and long-term adherent painting on the composite. Among the different techniques, an industrial atmospheric pressure remote plasma has been used in this work to treat PEEK CFRP surfaces. The characterization of this device by means of electrical diagnostics related to the effect of such post-discharge on the surface modifications is discussed. Firstly, electrical characteristics of the discharge show fairly high currents associated to high voltages which suggest a nonestablished and cold arc. Power consumed by the electrical supply associated to post-discharge length and surface temperatures allowed a better understanding of the industrial device. Secondly, the effects of plasma on surface chemistry and topography are analyzed by water contact angle measurements, X-ray Photoelectron Spectroscopy (XPS) and Atomic Force Microscopy (AFM). Investigations showed that treated surfaces exhibited better hydrophilicity mainly due to an incorporation of oxygen containing groups (up to 8.4% more) under air plasma whereas an increase of the nanoroughness and specific surface is preponderant under nitrogen plasma. Different hydrophilic capabilities of the surface obtained in air and nitrogen gas plasmas highlight a potential optimization of activation performances according to industrial specification.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87651142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1051/EPJAP/2021210104
A. Stoilova, D. Dimov, Y. Trifonova, V. Lilova, B. Blagoeva, D. Nazarova, L. Nedelchev
The work presents preparation, structural investigation and optical properties determination of composite films based on the azopolymer (poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt]), shortly PAZO, doped with 1 wt.% particles of the previously synthesized by us new tellurium containing chalcogenide system (GeTe4 )100-x Cux , where x = 5, 10, 15 and 20 mol.%. X-Ray diffraction (XRD) was applied to analyze the structure of the chalcogenide bulk material. Transmission electron microscopy (TEM) has been used to study the particles and the composite films morphology. The transmittance coefficient (T ), the reflectance coefficient (R ), the refractive index (n ), the extinction coefficient (k ), the optical absorption coefficient (α ) and the optical band gap ( ) of the composite films were determined. Birefringence was induced by a He-Cd laser with a wavelength 442 nm and measured with probe Diode Pumped Solid State (DPSS) laser at 635 nm. The influence of the dopants concentration on the optical performance of the composite films has been discussed.
{"title":"Preparation, structural investigation and optical properties determination of composite films based on PAZO polymer doped with GeTe4-Cu chalcogenide particles","authors":"A. Stoilova, D. Dimov, Y. Trifonova, V. Lilova, B. Blagoeva, D. Nazarova, L. Nedelchev","doi":"10.1051/EPJAP/2021210104","DOIUrl":"https://doi.org/10.1051/EPJAP/2021210104","url":null,"abstract":"The work presents preparation, structural investigation and optical properties determination of composite films based on the azopolymer (poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt]), shortly PAZO, doped with 1 wt.% particles of the previously synthesized by us new tellurium containing chalcogenide system (GeTe4 )100-x Cux , where x = 5, 10, 15 and 20 mol.%. X-Ray diffraction (XRD) was applied to analyze the structure of the chalcogenide bulk material. Transmission electron microscopy (TEM) has been used to study the particles and the composite films morphology. The transmittance coefficient (T ), the reflectance coefficient (R ), the refractive index (n ), the extinction coefficient (k ), the optical absorption coefficient (α ) and the optical band gap ( ) of the composite films were determined. Birefringence was induced by a He-Cd laser with a wavelength 442 nm and measured with probe Diode Pumped Solid State (DPSS) laser at 635 nm. The influence of the dopants concentration on the optical performance of the composite films has been discussed.","PeriodicalId":12228,"journal":{"name":"European Physical Journal-applied Physics","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89448867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：