Article
Crystallography
Mikhail Zinovev, Nikolay N. Yudin, Igor Kinyaevskiy, Sergey Podzyvalov, Vladimir Kuznetsov, Elena Slyunko, Houssain Baalbaki, Denis Vlasov
Summary: A multispectral anti-reflective coating with high radiation strength has been developed for laser applications in the IR spectrum for nonlinear ZnGeP2 crystals. The coating, made with YbF3/ZnS using ion-beam deposition, has a high LIDT and good adhesion to the substrate. The double compound did not dissociate under high-energy ions.
Article
Materials Science, Multidisciplinary
M. Hossain, G. Al Kubaisi, B. Aissa, S. Mansour
Summary: In this study, controlled changes in the wetting behavior of silica thin films were achieved by treating coated surfaces with acetone solvent, resulting in a shift from superhydrophilic to hydrophilic. X-ray photoelectron spectroscopy analysis indicated different stoichiometries for treated and untreated samples, paving the way for cost-effective and efficient anti-soiling and self-cleaning coatings.
MATERIALS SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Abuduwaili Mijiti, Mamatrishat Mamat, Fuerkaiti Xiaerding, Qing Wang, Abuduresuli Abudurexiti, Litipu Aihaiti
Summary: The BiFeO3 (BFO) thin films prepared by electron beam evaporation were systematically investigated to determine optimal deposition power and elemental composition, with the purest phase identified at 650 degrees C. The study also employed X-ray diffraction, Raman spectroscopy, and scanning electron microscopy to analyze surface morphology and structure thickness. Additionally, X-ray photoelectron spectroscopy was used to study changes in chemical bond structure at various annealing temperatures, revealing increased oxygen absorption with higher temperatures. Magnetic properties and resistivity were also measured, indicating correlations between magnetization, microstructures, and surface morphology.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Ceramics
Ahmed Saeed Hassanien
Summary: This article focuses on the study of the linear and nonlinear optical characteristics of thermally evaporated a-CuxGe20-xSe40Te40 thin films. Measurements and analyses of optical constants, potentials, and oscillator models were conducted to investigate the effects of different Cu ratios on the film properties. The article also discusses other important optoelectrical and dielectric parameters.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Physics, Condensed Matter
Ahmed Saeed Hassanien, Ishu Sharma, Kamal A. Aly
Summary: This study focuses on the optical characteristics of thermally evaporated Pb10Se90-xGex thin films. Elemental analysis and optical properties were investigated using X-ray spectroscopy and transmission spectra, revealing changes in optical band gap and Urbach energy with increasing Ge ratio. The discussed parameters are strongly dependent on the Ge concentration.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Physics, Condensed Matter
Ahmed Saeed Hassanien, Ishu Sharma
Summary: This article discusses the study of various dielectric and optoelectrical parameters of amorphous Pb10Se90-xGex thin films, demonstrating their potential use in optoelectronic applications and IR photodetectors.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
M. Duris, D. Deubel, L. Bodiou, C. Vaudry, J-C Keromnes, J. Charrier
Summary: Germanium/Zinc Sulphide (Ge/ZnS) single and multilayers were deposited on Silicon substrates using ion assisted electron beam deposition for applications in the 2-15 μm wavelength region. Refractive indices of Ge and ZnS films were determined from measured reflectance and transmittance spectra. Mid-infrared filters with designs ranging from 3 to 29 layers, including high-, anti-reflection coatings and dichroic filters, were successfully fabricated, with experimental spectra showing good agreement with simulations, particularly in the long-wave infrared region.
Article
Engineering, Electrical & Electronic
Nagabhushan Jnaneshwar Choudhari, Sajan D. George, Y. Raviprakash
Summary: Cu2ZnSnS4 (CZTS) thin films were synthesized using a two-step procedure, and it was found that the sample with the stack order SLG/ZnS/Sn/Cu and sulfurization time of 30 min exhibited better crystallite size, lower lattice strain and dislocation density, near stoichiometric composition, and optimal band gap value.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
M. Novakovic, M. Popovic, V. Rajic
Summary: The effects of thermal annealing on the structural and magnetic properties of Co thin films were investigated. The films were prepared using electron-beam evaporation method and annealed at temperatures of 200, 300, and 400 degrees C. Characterization techniques such as X-ray diffraction, Rutherford back-scattering spectrometry, X-ray photoelectron spectroscopy, transmission electron microscopy, and energy-dispersive X-ray spectrometry were employed to analyze the films' structure, composition, and magnetic behavior. It was found that annealing induced a phase transition from HCP to FCC, resulting in a change in the films' magnetic anisotropy and coercive field. The highest coercivity was observed at 400 degrees C, where the formation of CoSi at the interface was also observed. (c) 2022 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Nimra Saeed, Saad Akhtar, Muhammad Bilal Hanif, Sajid Hussain, Salahuddin Dogar, Farrukh Aziz Bhatti, Michal Mosialek, Bogna Daria Napruszewska, Martin Motola, Abdul Faheem Khan
Summary: V2O5 thin films were fabricated on soda lime glass substrates using e-beam evaporation and magnetron sputtering techniques at a substrate temperature of 200 degrees C. The thin films showed different structural, optical, and electrical properties depending on the deposition method. XRD, UV-Visible spectroscopy, RBS, FESEM, and Hall measurement techniques were used to characterize the films. The results showed that sputtered films had better crystallinity, optical properties, and conductivity compared to e-beam deposited films, making them suitable for the fabrication of cost-effective and reliable microbolometers infrared (IR) sensors.
Article
Materials Science, Multidisciplinary
M. I. Hossain, Y. Zakaria, A. Zikri, A. Samara, B. Aissa, F. El-Mellouhi, N. S. Hasan, A. Belaidi, A. Mahmood, Said Mansour
Summary: E-beam evaporated metal-oxide thin films with different stoichiometries have been studied as carrier transport materials for large-scale perovskite solar cell devices. The films, deposited through reactive evaporation of pure metals in various oxygen atmosphere pressures, exhibit excellent optical and electrical properties. Numerical modeling using SCAPS-1D software demonstrates a power conversion efficiency exceeding 26%. The variation of oxygen concentration in the films with respect to deposition pressures is confirmed by X-ray photoelectron spectroscopy and optical characterization. The electrical measurements and field emission scanning electron microscopy further confirm the reasonable data range and the homogeneous and dense deposition of the films.
MATERIALS TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Chandra Prakash Singh, Saurabh Kumar Pandey
Summary: This article investigates the influence of copper electrode on the electrical response of tin-oxide-based bipolar resistive switching (RS) device. The crystal structure, energy bandgap, surface morphology, and nanostructure of the device are characterized, and the electrical behavior is recorded. The results show that the device exhibits reversible RS phenomena and good resistive window.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Multidisciplinary
Ahmed Saeed Hassanien, Ishu Sharma
Summary: This study investigates the optical properties of a thin film material and characterizes it using various techniques. The results show that the film possesses good amorphous nature and low refractive index, making it suitable for a variety of optical applications.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Chemistry, Physical
M. S. Vasilyeva, I. V. Lukiyanchuk, K. A. Sergeeva, A. A. Sergeev, E. V. Shchitovskaya, V. S. Egorkin, V. G. Kuryavii, A. Yu. Ustinov, S. L. Sinebryukhov, S. V. Gnedenkov
Summary: A coating with a porous structure, good adhesion to the substrate, and containing titanium dioxide modifications has been obtained through plasma electrolytic oxidation. Gold nanoparticles were deposited on the surface to form a Ti/TiO2/Au composite. The presence of the gold layer resulted in an increase in photocurrent densities. The number of charge carriers and flat band potential were calculated for the materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
Anuradha Purohit, Himanshu, S. L. Patel, S. Chander, M. S. Dhaka
Summary: The physical properties of CdS thin films were investigated in this study, with the choice of substrate impacting the structural parameters and Cd/S weight percentage ratio. The selection of substrate during device fabrication was found to play a crucial role in the properties of the thin CdS layers.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Optics
Vladimir Pervak, Tatiana Amotchkina, Daniel Hahner, Sebastian Jung, Yurij Pervak, Michael Trubetskov, Ferenc Krausz
Article
Optics
M. Trubetskov
Article
Optics
M. Trubetskov, T. Amotchkina, L. Lehnert, J. Sancho-Parramon, K. Golyari, V Janicki, M. Ossiander, M. Schultze, V Pervak
Article
Optics
Jennifer D. T. Kruschwitz, Vladimir Pervak, Jason Keck, Eric Baltz, Amit Deliwala, Zachary Gerig, Fabien Lemarchand, Samuel Pellicori, Kageyuki Sato, William Southwell, Michael Trubetskov, Kunihiko Yano, Wenjia Yuan
Article
Multidisciplinary Sciences
Ioachim Pupeza, Marinus Huber, Michael Trubetskov, Wolfgang Schweinberger, Syed A. Hussain, Christina Hofer, Kilian Fritsch, Markus Poetzlberger, Lenard Vamos, Ernst Fill, Tatiana Amotchkina, Kosmas V. Kepesidis, Alexander Apolonski, Nicholas Karpowicz, Vladimir Pervak, Oleg Pronin, Frank Fleischmann, Abdallah Azzeer, Mihaela Zigman, Ferenc Krausz
Article
Optics
Y. Chen, D. Hahner, M. Trubetskov, S. Schrameyer, W. Sakiew, K. Starke, V Pervak
APPLIED PHYSICS B-LASERS AND OPTICS
(2020)
Article
Optics
Penghui Ma, Yu Chen, Tatiana Amotchkina, Michael Trubetskov, Vladimir Pervak, Li Li
Article
Multidisciplinary Sciences
Marinus Huber, Kosmas Kepesidis, Liudmila Voronina, Masa Bozic, Michael Trubetskov, Nadia Harbeck, Ferenc Krausz, Mihaela Zigman
Summary: Health state transitions are reflected in characteristic changes in molecular composition of biofluids. The authors demonstrate that blood-based phenotypes are sufficiently stable over time using infrared molecular fingerprinting, providing the basis for time- and cost-effective health monitoring.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Alexander Weigel, Philip Jacob, David Groters, Theresa Buberl, Marinus Huber, Michael Trubetskov, Joachim Heberle, Ioachim Pupeza
Summary: Ultra-rapid electro-optic sampling of midinfrared pulses centered at 9 μm has been demonstrated, showcasing high spectral intensity dynamic range and precision. The technique, utilizing mirror scanning with sonotrode resonance, shows promise in applications such as molecular fingerprinting and tracking of biological processes and chemical reactions.
Article
Optics
Yu Chen, Daniel Hahner, Michael Trubetskov, Vladimir Pervak
Summary: A new method using two mirrors with anti-phase GDD produced in one coating run is proposed to suppress GDD oscillations. The anti-phase GDD is achieved by spectral shift between the mirrors, effectively suppressing GD and GDD oscillations and improving pulse quality with shorter pulses and smaller pre- and post-pulses.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Jennifer D. T. Kruschwitz, Michael Trubetskov, Jason Keck
Summary: The paragraph introduces the design problems for the Optical Interference Coating (OIC) 2022 Topical Meeting, which include black box coatings for reverse engineering and white-balanced, multi-bandpass filters for three-dimensional cinema projection in outdoor environments. Fourteen designers from China, France, Germany, Japan, Russia, and the United States submitted a total of 32 designs for the problems. The design problems and the submitted solutions are described and evaluated.
Article
Optics
Tatiana Amotchkina, Michael Trubetskov, Vesna Janicki, Jordi Sancho-Parramon
Summary: This study proposes a post-production characterization approach based on spectral photometric and ellipsometric data, which is related to a specially prepared set of samples. In-situ measurements of single-layer and multilayer samples were conducted to determine the reliable thicknesses and refractive indices of the final multilayer sample. Different characterization strategies based on in-situ measurements were compared, and the best approach for practical use, when preparation of the sample set is not feasible, was proposed.
Article
Optics
Tatiana Amochkina, Michael Trubetskov
Summary: This study reports the important and interesting results of designing dispersive mirrors (DMs) for the mid-infrared spectral range. The study constructs the permissible domains of the most important design specifications, such as mirror bandwidth and group delay variation. Estimations of the required total coating thickness, thickness of the thickest layer, and expected number of layers are obtained. The results are validated through an analysis of several hundreds of DM design solutions.
Proceedings Paper
Engineering, Electrical & Electronic
Alexander Weigel, Theresa Buberl, Philip Jacob, Tatiana Amotchkina, Christina Hofer, Michael Trubetskov, Philipp Sulzer, Syed Ali Hussain, Wolfgang Schweinberger, Vladimir Pervak, Ferenc Krausz, Ioachim Pupeza
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
