Article
Materials Science, Multidisciplinary
Ronald R. Willey, Olaf Stenzel
Summary: In the field of nanomaterials and meta-materials, thin films are used with thicknesses much thinner than previously used in optical thin film coatings. However, the island structure that occurs during film nucleation and growth poses a problem. The indices of refraction, n and k, also vary with thickness, making it difficult to model. This paper introduces a tool for designing optical thin films with varying indices of refraction.
Article
Chemistry, Multidisciplinary
Natalia Herguedas, Enrique Carretero
Summary: SiOx thin films were prepared on a silicon substrate using magnetron sputtering and characterized using Fourier transform infrared spectroscopy. The results demonstrate the significance of selecting an appropriate range of O2 flow rates in modifying the stoichiometry and refractive index values of SiOx in the mid-infrared range.
Article
Physics, Condensed Matter
Prashant Thapliyal, N. S. Panwar, G. Mohan Rao
Summary: Thin films of (Ta2O5) (1-x)-(TiO2) (x), x = 0.06, were deposited on quartz and P/boron-silicon (1 0 0) substrates by sputtering in an oxygen environment. Annealing of the films at different temperatures resulted in changes in optical and electrical properties, showing different characteristics in optical transmittance and current-voltage characteristics after annealing.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Polymer Science
Jemy James, Rosemary Johnson, Anjali R. Nair, Nitin George Eapen, Blessy Joseph, Guillaume Vignaud, Yves Grohens, David Laroze, Sana Kabdrakhmanova, Nandakumar Kalarikkal, Sabu Thomas
Summary: The objective of this study is to investigate the interaction between acrylic resin and zirconia nanoparticles, and analyze the changes in optical properties and refractive index with incremental loading of nanoparticles. PMMA reinforced with zirconia nanoparticles were prepared using dip coating, spin coating and solvent casting techniques. The spectroscopic and morphological studies provided an overall understanding of the polymer nanocomposite film. The study revealed that the refractive index and optical transparency of the nanocomposite film can be maintained with the incorporation of pure zirconia nanoparticles, and spin coating was found to be the best technique for producing thin films with high transparency and refractive index.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
D. Sahoo, P. Priyadarshini, R. Dandela, D. Alagarasan, R. Ganesan, S. Varadharajaperumal, Ramakanta Naik
Summary: This study investigates the phase transformation and optical properties of As50Se50 thin films upon annealing at different temperatures. The structural changes and optical behavior varied significantly between the annealing temperatures of 423K and 523K.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Deviprasad Sahoo, Satyaprakash Sahoo, Devarajan Alagarasan, Rajamanickam Ganesan, Selvaraj Varadharajaperumal, Ramakanta Naik
Summary: This study investigates the impact of proton irradiation on the structural, optical, and morphological properties of thermally evaporated As40Se50Sb10 thin films. The results show that proton irradiation leads to changes in absorption edge, optical band gap, and nonlinear optical parameters, demonstrating the tuning capabilities of the films. X-ray diffraction indicates the amorphous nature of the films post-irradiation, and microstructural changes are observed from Raman spectra. The higher values of nonlinear optical parameters with proton irradiation are crucial for advanced photonic applications.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Optics
A. M. Abdel Hakeem, H. M. Ali, M. M. Abd El-Raheem, M. F. Hasaneen
Summary: Cadmium telluride thin films were deposited on different substrates using thermal evaporation, with structural and morphological studies conducted using XRD and FE-SEM. The films exhibited a polycrystalline structure with uneven and irregular grains. Optical measurements revealed that CdTe films deposited on FTO substrates were suitable for solar cell absorber materials.
Article
Materials Science, Ceramics
Housei Akazawa
Summary: Both undoped and Er3+-doped Bi2O3 thin films were sputter-deposited on Si(100) substrates, exhibiting varying refractive indices and emission characteristics. Er3+ emissions peaking at 532 nm were observed in the Er3+-doped Bi2O3 films, with concentration quenching potentially influenced by the deposition temperature.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Najm M. Al-Hosiny, Sami S. Alharthi, Ali Badawi
Summary: The optical properties of Gafchromic EBT films were investigated under various solar power intensities, showing a strong dependence of parameters such as absorbance, transmittance, and reflectance on solar power intensity. This suggests that EBT films can be considered suitable candidates for many sensing and dosimetry applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Electrical & Electronic
Rajan Sharma, Sunanda Sharda, K. A. Aly, A. Dahshan, Pankaj Sharma
Summary: Thin films of the (SnSe4)(95-x)(Bi2Te3)(5)(+x) (x = 0, 5, 15) system were prepared by thermal evaporation technique and their structural and optical properties were studied. The results showed that the addition of metallic elements Bi and Te increased the semiconducting behavior of the system.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Lina Grineviciute, Holger Badorreck, Lars Jensen, Detlev Ristau, Marco Jupe, Algirdas Selskis, Tomas Tolenis
Summary: This paper presents an extensive morphological analysis of silica nanostructured anisotropic films, showing how changing deposition angles affects surface filling and phase retardance. It also investigates covering these structures with a dense layer under different conditions, developing a technology to maintain initial anisotropic properties. Simulation of growing silica layers using experimental conditions is also presented, showing minimal impact on the anisotropy of porous layers with deposition at a certain angle during substrate rotation.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Paolo Giusto, Daniel Cruz, Tobias Heil, Nadezda Tarakina, Maddalena Patrini, Markus Antonietti
Summary: By chemically vapor depositing BCN thin films from a single source precursor, high transparency and refractive index values for reflective mirrors and lenses are achieved. These wide-bandgap semiconductor materials, with positive valence band, demonstrate stability against oxidation making them ideal for protective coatings and charge transport layers in solar cells. The simple and low-hazard method can open up possibilities for BCN thin films in optics and optoelectronics.
Article
Materials Science, Multidisciplinary
Stephanie Arouh, Abhinav Nishant, Jeffrey Pyun, Robert A. Norwood
Summary: In this study, Chalcogenide hybrid inorganic/organic polymers (CHIPs) were characterized to study their refractive index and electronic properties. The results show that these materials have great potential for optical and photonic applications, especially in telecommunications, and may also be suitable for applications such as electro-optic devices and capacitors.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Materials Science, Ceramics
Priyanka Priyadarshini, Subhashree Das, Devarajan Alagarasan, Rajamanickam Ganesan, Selvaraj Varadharajaperumal, Ramakanta Naik
Summary: The paper investigated the effects of Bi concentration on the properties of thermally evaporated BixIn35-xSe65 thin films, finding changes in structural, linear, and non-linear optical characteristics with increasing Bi %. The linear optical parameters increased while the non-linear refractive index and susceptibility showed significant increments with Bi % concentration, making the materials suitable for non-linear optical applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Cristian Felipe Ramirez-Gutierrez, Ivan Alonso Lujan-Cabrera, Cesar Isaza, Ely Karina Anaya Rivera, Mario Enrique Rodriguez-Garcia
Summary: Porous silicon (PSi) with branched pore geometry on p(++)-type (111) silicon substrate was fabricated through electronically etching method in hydrofluoric acid media. Optical properties were determined using a photoacoustic (PA) technique, with models compared for pore geometry determination.
Article
Materials Science, Ceramics
Omer Kesmez, Esin Akarsu, H. Erdem Camurlu, Emre Yavuz, Murat Akarsu, Ertugrul Arpac
CERAMICS INTERNATIONAL
(2018)
Article
Engineering, Environmental
Esin Akarsu, Ertugrul Arpac
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Biochemistry & Molecular Biology
Aysun Ozkan, Ayse Erdogan, Odul Ozkan, Esra Manguoglu, Nadir Kiraz
TURKISH JOURNAL OF BIOCHEMISTRY-TURK BIYOKIMYA DERGISI
(2019)
Article
Materials Science, Textiles
Emre Yavuz, Ramazan Erdem, Ertan Kucuksayan, Esin Akarsu, Murat Akarsu
Summary: Hydroxyapatite particles were modified with polyethylene glycol functional silane successfully, maintaining crystal structure unchanged. Electrospun nanofibrous biomembranes incorporating modified HAP exhibited higher cellular protein expression compared to unmodified biomembranes.
FIBERS AND POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Asli Dortler Kesici, Nadir Kiraz
Summary: This study focused on obtaining low-temperature boron carbide fibers from a polymer-precursor mixture, analyzing the fibers produced through electrospinning method from boric acid and polyvinylpyrrolidone, and enhancing the fibers with a compound to form strong cross-links in the composite. Mechanical strength tests were conducted on fiber-reinforced and particle-reinforced composites to compare the results.
Article
Chemistry, Inorganic & Nuclear
Mitat Akkoc, Nesrin Bugday, Serdar Altin, Nadir Kiraz, Sedat Yasar, Ismail Ozdemir
Summary: A novel magnetic nano Fe3O4@SiO2@NHC@Pd-MNPs heterogeneous catalyst was successfully prepared and demonstrated excellent catalytic activity for Suzuki-Miyaura cross-coupling reactions. The catalyst showed high stability and could be easily recovered and reused multiple times without significant loss of catalytic activity.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2021)
Article
Materials Science, Textiles
Ramazan Erdem, Emre Yavuz, Esin Akarsu, Murat Akarsu, Ozlem Erdem Yilmaz, Ahmet Cosgun
Summary: In this study, various types of electrospun scaffolds were prepared and characterized. The results showed that the PLCL/COL/Ag-HAp scaffold had the smallest fiber diameter and the highest tensile strength. The incorporation of collagen and HAp also improved the hydrophilicity of the electrospun scaffolds. Additionally, the PLCL/COL/Ag-HAp scaffold exhibited remarkable antibacterial efficiency.
JOURNAL OF THE TEXTILE INSTITUTE
(2022)
Article
Chemistry, Multidisciplinary
Devrim Guzel, Merve Gunes, Burcin Yalcin, Esin Akarsu, Eyyup Rencuzogullari, Bulent Kaya
Summary: This study evaluated the cytotoxic and genotoxic potentials of silver nanoparticles on human lymphocytes through in vitro experiments. The results showed that silver nanoparticles have harmful effects on cells and may cause DNA damage.
DRUG AND CHEMICAL TOXICOLOGY
(2023)
Article
Materials Science, Composites
Faustin Hategekimana, Nadir Kiraz
Summary: Silica-based nanoclusters were synthesized and used as fillers to prepare dental composites. The results showed significant improvement in physical and mechanical properties of composites containing nanoclusters.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Emre Yavuz, Ramazan Erdem, Esin Akarsu
Summary: Nanocomposites, which combine nanoparticles and polymers, have attracted attention for their unique properties. This study synthesized PMMA/SiO2 hybrid nanocomposites by incorporating grafted and ungrafted silica nanoparticles. The results showed that introducing SiO2 nanoparticles significantly improved the thermal properties of the materials, and the highest glass transition temperature was achieved in the MPTES@20% SiO2-PMMA hybrid nanocomposite.
POLYMER SCIENCE SERIES B
(2022)
Article
Materials Science, Composites
Eyluel Odabas, Esin Akarsu
Summary: The aim of this study was to improve the interface interactions of PLA/HAP composites by modifying the HAP surface. Three different silane modifying agents were used to functionalize HAP particles for the preparation of PLA/m-HAP. The interface interactions of the composites were characterized using FT-IR and DSC. Vickers hardness tests were conducted to investigate the effect of silane modifying agents on hardness.
COMPOSITE INTERFACES
(2023)
Article
Medicine, General & Internal
Sabri Cora, Kursat Er, Tamer Tasdemir, Nadir Kiraz, Burcu Becer, Rasih Felek, Hakan Er
MEANDROS MEDICAL AND DENTAL JOURNAL
(2020)
Article
Chemistry, Medicinal
Oznur Gucluer, Esin Akarsu, Emre Yavuz, Kursat Er, Alper Kustarci
CHINESE HERBAL MEDICINES
(2020)
Article
Chemistry, Multidisciplinary
Omer Kesmez, Ertugrul Arpac, Nadir Kiraz, Neslihan Tamsu Selli, Ayse Tunali
Article
Environmental Sciences
Fatma Mutlu, Fusun Yurekli, Birol Mutlu, Fatma Bilge Emre, Funda Okusluk, Onur Ozgul
FRESENIUS ENVIRONMENTAL BULLETIN
(2018)
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)