Article
Materials Science, Multidisciplinary
R. A. Elsad, Ahmed M. Abdel-Aziz, Emad M. Ahmed, Y. S. Rammah, F. I. El-Agawany, M. S. Shams
Summary: Lead-borate glasses reinforced by Er3+ and Nd3+ ions were fabricated and investigated for their physical, structure, ultrasonic mechanical, and dielectric properties. The introduction of Nd3+ and Er3+ ions caused changes in the local field on lead ions and formation of [PbO4] units. The addition of rare earth ions also affected the boron-boron separation, dielectric constant, and ac conductivity of the glasses.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Ceramics
Prashant Thapliyal, Alok S. Kandari, Vijendra Lingwal, N. S. Panwar, G. Mohan Rao
Summary: The study investigated the characteristics of (Ta2O5)1-x- (TiO2)x (TTOx) thin films prepared with different compositions and annealing temperatures, revealing that the film with x = 0.06 and annealed at 700°C exhibited the highest dielectric constant and lower leakage current density, making it suitable for high-density silicon memory devices.
CERAMICS INTERNATIONAL
(2021)
Review
Materials Science, Multidisciplinary
Amanda S. M. de Freitas, Cristiane C. Maciel, Jessica S. Rodrigues, Rafael P. Ribeiro, Adriana O. Delgado-Silva, Elidiane C. Rangel
Summary: This review focuses on the use of HMDSO precursor in low-pressure PECVD for producing organosilicon thin films. The advantages of this method and the potential applications of the treated materials are discussed, along with specific properties of the films in various applications such as biomedical, energy, optics, sensoring, and separation systems.
Article
Engineering, Chemical
Manlin Yuan, Xin Lu, Xiaoyun Ma, Hao Lin, Angui Lu, Liyan Shao, Zhong Xin
Summary: The evolution of electronic communication technology requires low dielectric constant materials. A benzoxazine functional organosilicon was prepared with dense Si-O-Si crosslinking networks and large sterically hindered tert-butyl groups. Polybenzoxazine composites were prepared from bis-functional benzoxazine monomer and the organosilicon, which further increased the crosslinking density and decreased the dipole density of the composites, resulting in enhanced low-k properties.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Ghadi Dakroub, Thomas Duguet, Jerome Esvan, Corinne Lacaze-Dufaure, Stephanie Roualdes, Vincent Rouessac
Summary: Plasma polymerized organosilicon thin films were deposited using hexadimethylsiloxane (HMDSO) as a precursor in MW-PECVD. Characterization of the films' composition and surface properties were conducted through various techniques. Differences in chemical environments between the bulk and surface of the films were observed under different plasma conditions.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Composites
Omid Aghababaei Tafreshi, Zia Saadatnia, Shahriar Ghaffari-Mosanenzadeh, Tianhao Chen, Sophie Kiddell, Chul B. Park, Hani E. Naguib
Summary: This study presents the fabrication of novel polyimide composite aerogel films with tunable dielectric properties by incorporating graphene nanoplatelet fillers. The addition of graphene improved the nanostructure of aerogels, resulting in improved homogeneity and uniformity of the composite gel films. The inclusion of graphene nanoplatelets proved to be an effective strategy for improving the mechanical properties, machinability, and thermal stability of aerogels.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Chong-Yuan Zhang, Qiang Wu, Ying-Dong Wang, Jin-Tao Fan, Zi-Zong Zhu
Summary: In this study, carbonization experiments were conducted on cokes produced from Jurassic and Carboniferous coking coals. The quality of cokes from Jurassic coals was found to be inferior to that from Carboniferous coals. Analyzing the coal samples, it was discovered that the excessive oxygen-containing functional groups in the Jurassic coals led to the poor quality of the cokes.
Article
Physics, Condensed Matter
Sajjad Hussain, Imran Sadiq, Hasan M. Khan, Mishal Idrees, Farhan Sadiq, Asif Shah, Saira Riaz, Shahzad Naseem
Summary: In this study, the substitution of Sr2+ with Mg2+ in R-type hexagonal ferrites was investigated for its effects on structural, electrical, dielectric, and FTIR properties. The results showed changes in lattice parameters, crystallite size, dielectric constant, and AC conductivity with Mg2+ substitution. Furthermore, the P-E loops indicated a decrease in saturation and remnant polarization with an increase in Mg2+ content, suggesting potential applications in microwave absorption devices and transformers to reduce eddy current losses.
PHYSICA B-CONDENSED MATTER
(2021)
Review
Chemistry, Applied
Martyna Krysa, Monika Szymanska-Chargot, Artur Zdunek
Summary: Flavonoids are secondary metabolites commonly found in plants, known for their antioxidant properties, involvement in plant defense mechanisms, and responsibility for the pigmentation of fruits and flower petals. Consumption of foods rich in flavonoids brings various health benefits such as blood pressure regulation, anti-aging effects, and anti-cancer properties. Infrared and Raman spectroscopy are effective methods for quickly and accurately determining the presence of flavonoid compounds in test samples. These methods have been successfully applied in the food and pharmaceutical industries. The spectroscopic spectra of different flavonoid subgroups (flavones, isoflavones, flavanones, flavonols, and anthocyanins) are compared and described in this review.
Article
Materials Science, Characterization & Testing
Nuha Al-Harbi
Summary: This study describes the preparation and characterization of Cs/PEO-ZrO2 nanocomposite films. The results show that the addition of ZrO2 nanoparticles improves the optical and electrical properties of the films, indicating their potential for application in optoelectronic devices.
Article
Materials Science, Multidisciplinary
M. M. El-Desoky, Ibrahim Morad, Mohamed. A. Ali, Atif Mossad Ali, M. A. Sayed, H. Algarni, A. F. Abd-Rehim
Summary: By investigating the effects of annealing temperature on vanadium oxide (VO2) films, it was found that the VO2 films exhibit semiconductor behavior, with grain size and density potentially influencing their electrical properties. The decrease in dielectric loss and dielectric constant with increasing frequency, along with the increase in AC conductivity with temperature, suggests an enhancement in charge carrier mobility.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Food Science & Technology
Simone Canabarro Palezi, Sibele Santos Fernandes, Sergiane Caldas Barbosa, Ednei Gilberto Primel, Vilasia Guimaraes Martins
Summary: In this study, orally disintegrating films (ODFs) using sodium alginate and different concentrations of vitamin C were developed and evaluated. The results showed that sodium alginate can be a promising polymer for the production of ODFs and the delivery of vitamin C.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Jinghang Xie, Fan Yang, Haimei Shi, Jintao Yan, Hao Shen, Shaoning Yu, Ning Gan, Bin Feng, Li Wang
Summary: This study investigated the influence of water on the bacterial protein amide bands using FT-IR spectroscopy. The results showed that the FT-IR signals of protein amide bands are beneficial for bacterial typing.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Materials Science, Ceramics
Dongyang Zhang, Linling Li, Yong Wang, Chen Zhang, Chao Teng
Summary: This article briefly summarizes the recent achievements in reducing the dielectric properties of polyimide films through various methods or strategies, and also summarizes the mechanical properties, thermal stability, and optical properties. Achieving the synergy of low dielectric properties, high thermal stability, and superior mechanical properties is the research direction and priority for future development of polyimide films.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Xinzhi Li, Marko Vehkamaki, Mykhailo Chundak, Kenichiro Mizohata, Anton Vihervaara, Matti Putkonen, Markku Leskela, Mikko Ritala
Summary: This article presents a study on a new type of inorganic-organic silicon-based molecular layer deposition (MLD) process, using AlCl3 and BTEB as precursors. The researchers successfully deposited hybrid films with high growth per cycle (GPC). FESEM and AFM were used to analyze the surface morphology of the films, while ATR-FTIR, ToF-ERDA, and XPS were employed to analyze the structure and composition. The storage environment of the films was found to significantly affect their performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Stefano Dicorato, Yael Gutierrez, Maria M. Giangregorio, Fabio Palumbo, Giuseppe Bianco, Maria Losurdo
Summary: In this study, GaS samples of various thicknesses were obtained and the interplay between structural, morphological, optical, and photoresponsivity properties as a function of thickness was investigated. The results showed that the photoresponsivity of GaS increases with thickness and remains stable over multiple on/off cycles.
Article
Crystallography
Marianne Kraeuter, Alexander John Cruz, Timothee Stassin, Sabina Rodriguez-Hermida, Rob Ameloot, Roland Resel, Anna Maria Coclite
Summary: ZIF-8 is synthesized by subjecting ZnO thin films deposited via plasma-enhanced atomic layer deposition to 2-methylimidazole vapor. The orientation of ZIF-8 crystals depends on the thickness and density of the precursor, with a more prominent orientation at longer conversion times. The thickness and roughness of ZIF-8 increase with conversion time.
Article
Materials Science, Multidisciplinary
Taher Abu Ali, Philipp Schaeffner, Maria Belegratis, Gerburg Schider, Barbara Stadlober, Anna Maria Coclite
Summary: This study presents an electronic skin that is responsive to force, humidity, and temperature. By combining piezoelectric zinc oxide and poly-N-vinylcaprolactam-co-di(ethylene glycol) divinyl ether hydrogel into core-shell nanostructures, the electronic skin achieves high sensitivity and spatial resolution, making it suitable for various applications.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Energy & Fuels
Vincenza Armenise, Silvia Colella, Antonella Milella, Fabio Palumbo, Francesco Fracassi, Andrea Listorti
Summary: Adding a fluorocarbon polymer onto the surface of metal halide perovskite can enhance its stability and optical properties, making it a promising technique for various applications.
Article
Polymer Science
Stefan Cesnik, Alberto Perrotta, Alessandro Cian, Massimo Tormen, Alexander Bergmann, Anna Maria Coclite
Summary: This research aims to improve the response time of humidity sensors by changing the surface-to-volume ratio of a humidity-sensitive polymer thin film and using an optical read-out method. Large and uniform nanostructured areas are created on the thin film using nanoimprint lithography. The first proof of concept shows that the response time of the structured thin film is at least three times faster than commercial sensors.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Katrin Unger, Anna Maria Coclite
Summary: This study presents the first vacuum-based synthesis of a glucose-responsive hydrogel thin film, which has a wide range of potential applications and is safe for in-body use.
Article
Materials Science, Coatings & Films
Dietmar Kopp, Jurgen M. Lackner, Reinhard Kaindl, Roswitha Elter, Maximilian Stummer, Andreas Hinterer, Anna Maria Coclite, Wolfgang Waldhauser
Summary: Deposition strategies using atmospheric pressure plasma were developed to obtain low-friction and wear resistant coatings on 3D-printed rough nylon surfaces. Pure MoS2 coatings wear rapidly, while composite coatings with graphite in a MoS2 matrix show potential for wear protection on exposed roughness tips.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Marianne Kraeuter, Taher Abu Ali, Barbara Stadlober, Roland Resel, Katrin Unger, Anna Maria Coclite
Summary: Porous zinc oxide thin films were synthesized via molecular layer-deposited zincone layers and subsequent calcination. The effects of process temperature and calcination temperature on the properties of resulting ZnO were investigated. The study found that the thickness and porosity of ZnO films can be controlled by adjusting the deposition and calcination conditions, and the porous ZnO exhibited potential applications in piezoelectric devices.
Article
Polymer Science
Katrin Unger, Marlene Anzengruber, Anna Maria Coclite
Summary: The study explored the possibility of conducting swelling measurements under thermal equilibrium to eliminate uncertainties caused by thermal gradients in experiments. Results showed that measurements in thermal equilibrium can be more widely applied to measurements under different humidity conditions.
Article
Chemistry, Multidisciplinary
J. Gruenwald, G. Eichenhofer, G. Filipic, Z. Federl, W. Feuchtenberger, K. Panos, G. Hernandez Rodriguez, A. M. Coclite
Summary: This paper analyzes the surface characteristics of carbon films deposited with inverted plasma fireballs, including the material's composition, layer thickness, hardness, and roughness. The experimental results demonstrate that inverted plasma fireballs provide a viable method for rapidly growing large area, homogeneous carbon films with minimal energy consumption.
Article
Chemistry, Physical
Reinhard Kaindl, Tomas Homola, Armando Rastelli, Albin Schwarz, Aivar Tarre, Dietmar Kopp, Anna Maria Coclite, Michael Goertler, Benjamin Meier, Bernd Prettenthaler, Maria Belegratis, Juergen M. Lackner, Wolfgang Waldhauser
Summary: This study achieved surface functionalization on various material structures using atomic layer deposition. The findings showed that deposition temperature, substrate material, and process conditions significantly influence the coating structure and composition. These results demonstrate the potential and limitations of combining additive manufacturing and atomic layer deposition for medical and energy production applications.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Lisanne Demelius, Matthias Blatnik, Katrin Unger, Paola Parlanti, Mauro Gemmi, Anna Maria Coclite
Summary: Interest in atomic layer deposition (ALD) processes on polymer substrates is driven by the growth of organic electronics and polymer-based nanodevices. This study investigates the initial growth and interface formation during plasma-enhanced ALD (PE-ALD) of ZnO on poly ethylene glycol dimethylacrylate (pEGDMA) and poly 2-hydroxyethyl methacrylate (pHEMA) thin films. The findings reveal that PE-ALD growth on polymers is influenced by both polymer etching and ZnO nucleation and growth, providing valuable insights for the development of new processes and applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Philipp Materna, David Illek, Katrin Unger, Martin Thonhofer, Tanja M. M. Wrodnigg, Anna Maria Coclite
Summary: The aim of this study is to investigate the feasibility of using vinyl-modified carbohydrate compounds as monomers for thin film polymerization via chemical vapor deposition. Synthetic carbohydrate-based polymers are explored for their potential applications in biodegradable, biocompatible, and biorenewable materials. The successful vapor polymerization of sugar compounds was demonstrated, showing the possibility of producing thin polymer films with good cell attachment surfaces for biomaterials and tissue engineering.
MONATSHEFTE FUR CHEMIE
(2023)
Article
Materials Science, Multidisciplinary
S. Chwatal, M. Stummer, H. Steiner, A. Brandner, S. Poelzl, C. Kittinger, J. M. Lackner, A. Hinterer, W. Waldhauser, A. M. Coclite
Summary: Sol-gel systems are widely used in the coating industry. Thicker sol-gel layers can be cured and functionalized using an atmospheric pressure plasma source. By adding copper particles, the sol-gel layers can become more scratch-resistant, anti-adhesive, and antimicrobial. The combination of simulation and experiments allows for quick determination and solution of treatment shortcomings.
Review
Polymer Science
Amir Hossein Mostafavi, Ajay Kumar Mishra, Fausto Gallucci, Jong Hak Kim, Mathias Ulbricht, Anna Maria Coclite, Seyed Saeid Hosseini
Summary: This review introduces various promising chemical and physical surface modification techniques for tailoring the characteristics of thin films and membranes. It focuses on the application of chemical vapor deposition (CVD) techniques and discusses the impact of process parameters on the quality and properties of deposition. The review highlights the significance of CVD-based membranes and thin films for industrial applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
