Article
Chemistry, Physical
Brijmohan Paramanik, Debajyoti Das
Summary: In this study, diamond-like carbon (DLC) films with well distinguished nanocrystalline diamond (NCD) grains embedded in the matrix were grown on glass substrates without any pre-treatment using a specially-designed stainless-steel shadow-mask assembly. The composition of the precursor gas and gas pressure in the plasma significantly influenced the relative composition of different carbon phases in the films. The optimum NCD embedded DLC film exhibited a homogeneous microstructure with uniform distribution of NCD grains and high optical transmittance.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
A. P. Yelisseyev, A. A. Emelyanov, A. K. Rebrov, N. Timoshenko, I. B. Yudin, S. A. Gromilov, A. T. Titov, M. Yu Plotnikov
Summary: Diamond coatings were obtained on a molybdenum substrate through gas-phase deposition, with the formation of nuclei and their growth and competition being key steps. The study of coating morphology revealed the growth and deposition process of particles in the gas phase, while XRD and Raman spectroscopy analysis identified the structure and composition of the coatings.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Fabio Isa, James P. Best, Anna Marzegalli, Marco Albani, Christophe Comte, Jamie J. Kruzic, Avi Bendavid
Summary: A novel approach is presented in this paper to tailor the stress properties of diamond thin films through boron doping and micro-fabrication of bridges using focused ion beam milling. Experimental data, supported by detailed confocal micro-Raman investigations and finite element method calculations, suggest that appropriate design of microbridge geometries, together with boron doping, can significantly enhance or diminish material stress compared to non-patterned thin films. This approach, combined with deterministic incorporation and positioning of diamond color centers, may offer new opportunities to tailor the optical and spin properties of diamond-based quantum devices through stress engineering.
Article
Materials Science, Multidisciplinary
Wenliang Zhu, Kazuyuki Arao, Elia Marin, Tatsuro Morita, Morimasa Nakamura, Paola Palmero, Jean-Marc Tulliani, Laura Montanaro, Giuseppe Pezzotti
Summary: This paper analyzes the effects of secondary phases in ZrO2 substrates on the structure of DLC films and their structural stability under indentation prints. The results show that oxygen from the oxide substrates is incorporated into the DLC films during deposition, and the sp(3) carbon content depends on the oxygen fraction and gas pressure. Moreover, structural distortion at the film/substrate interface and changes in Raman spectral morphology of carbon induced by structural alterations are observed.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Anna Dychalska, Marek Trzcinski, Kazimierz Fabisiak, Kazimierz Paprocki, Wojciech Koczorowski, Szymon Los, Miroslaw Szybowicz
Summary: This study investigates the effects of hydrogen treatment on polycrystalline CVD diamond layers with different grain sizes, oxidized through UV ozone and low-temperature thermal processes. It reveals that microcrystalline and nanocrystalline diamond layers exhibit different oxidation behavior, with microcrystalline samples being more susceptible to oxidation during UV treatment. The structural studies also indicate a slight ordering of amorphous carbon phase in the microcrystalline sample with the largest diamond grains.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Anna Dychalska, Wojciech Koczorowski, Marek Trzcinski, Lidia Mosinska, Miroslaw Szybowicz
Summary: The study investigates the structural and chemical changes in diamond layers after post-growth treatment with hydrogen through Raman spectroscopy, SEM, and XPS measurements, focusing on the micro-structural properties of diamond layers with varying grain sizes and sp(2) carbon content. The impact of hydrogenation on the surface structure and chemical composition of diamond layers is examined, taking into account the polycrystalline nature and variations within CVD diamond layers. The study involves Raman spectroscopy analysis before and after hydrogen treatment near T-shape markers on the surface of each studied diamond layer to compare results.
Article
Chemistry, Physical
T. I. Milenov, I. A. Avramova, A. Dikovska, D. Karaivanova, P. Terziyska, S. K. Kolev, D. Karashanova, B. Georgieva, D. Dimov, V. Atanasov, E. P. Valcheva
Summary: The study found that UV-C irradiation had a significant impact on the structural quality of a-C:H and ta-C:H films, reducing the content of sp(3) and oxygen-containing radicals. The influence of UV-C light directed almost parallel to the films' surface on the structural quality of graphene-like films was slightly higher than that directed perpendicular.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Zhichen Yan, Rakesh Joshi, Yi You, Geedhika Poduval, John A. Stride
Summary: This study introduces a method for controlled growth of ultrathin carbon films with a structure similar to graphene directly on silicon substrates, which shows potential for producing high-quality graphene films suitable for device fabrication.
Article
Chemistry, Analytical
Szymon Los, Kazimierz Fabisiak, Kazimierz Paprocki, Miroslaw Szybowicz, Anna Dychalska
Summary: Polycrystalline diamonds were synthesized on n-type single crystalline Si wafer using Hot Filament CVD method, and their conductivity and localized states densities were investigated at different temperatures. It was found that the surface hydrogenation of diamond films may play a crucial role in tuning transport properties.
Article
Physics, Applied
K. C. Anupam, Rony Saha, Jonathan Anderson, Anival Ayala, Christopher Engdahl, Edwin L. Piner, Mark W. Holtz
Summary: The study reported significant effects of nano-diamond seeding density on the growth, quality, and morphology of diamond films. Sparse seeding resulted in higher vertical and lateral growth rates before coalescence, with smaller lateral size and reduced surface roughness at higher seeding density. As thickness increased, material quality improved, as observed through narrowing of the diamond phonon peak and relative intensity measurements of Raman bands. x-ray photoelectron spectroscopy confirmed trends in diamond surface quality with varying seeding densities.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Qingqian Qiu, Pengzhi Wu, Yifeng Hu, Jiwei Zhai, Tianshu Lai
Summary: The crystallization temperature of SLL phase-change films increases anomalously with x, rather than decreases as predicted by the interfacial effects model. A new stress effect is proposed to explain this anomalous increase in T-C with x, with Raman spectroscopy confirming the presence of stress in SLL films. Tensile and compressive stresses are found to exist in Ge and Ge8Sb92 layers respectively, with stress reducing with increasing x, ultimately explaining the increase in crystallization temperature of SLL films.
Article
Chemistry, Physical
Victor Ralchenko, Vadim Sedov, Artem Martyanov, Valery Voronov, Sergey Savin, Andrey Khomich, Mikhail Shevchenko, Andrey Bolshakov
Summary: We report on the growth of novel microcrystalline diamond-germanium composite films on Si substrates using microwave plasma assisted chemical vapor deposition. The structure of the films strongly depends on the deposition temperature, with competing Ge grains and diamond crystallites at lower temperatures, and enhanced diamond growth at higher temperatures. The composite shows optical transmission for wavelengths above 10 mm and exhibits bright optical emission of GeV color centers at 601 nm. The effective coefficient of thermal expansion can be tuned by adjusting the Ge volume fraction, facilitating integration with semiconductor wafers.
Article
Physics, Applied
Jin Uk Gwon, Tae Hwan Jang, Min Su Kim, Tae Gyu Kim, Mun Ki Bae
Summary: A boron-doped diamond thin film was synthesized using the HFCVD method, and its surface shape, growth rate, bonding structure, and electrochemical properties were characterized using SEM, Raman spectroscopy, and cyclic voltammetry. The growth rate and crystal size of the film decreased with increasing boron doping concentration, and Raman analysis confirmed the bonding effects of boron on the diamond structure. Cyclic voltammetry analysis showed that the boron-doped diamond thin film had a wide potential window.
MODERN PHYSICS LETTERS B
(2022)
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.
Article
Chemistry, Physical
Szymon Los, Kazimierz Fabisiak, Kazimierz Paprocki, Miroslaw Szybowicz, Anna Dychalska, Ewa Spychaj-Fabisiak, Wojciech Frankow
Summary: Undoped polycrystalline diamond films were deposited on n-type silicon using the HF CVD technique. The presence of sp2 hybridized carbon bonds in the diamond layers was confirmed, and hydrogenation was found to affect the electrical properties of the heterojunctions. Hydrogenation was shown to reduce the potential barrier at the grain boundaries, which may have implications for hydrogen passivation in microelectronics.
Article
Chemistry, Physical
Anna Dychalska, Wojciech Koczorowski, Marek Trzcinski, Lidia Mosinska, Miroslaw Szybowicz
Summary: The study investigates the structural and chemical changes in diamond layers after post-growth treatment with hydrogen through Raman spectroscopy, SEM, and XPS measurements, focusing on the micro-structural properties of diamond layers with varying grain sizes and sp(2) carbon content. The impact of hydrogenation on the surface structure and chemical composition of diamond layers is examined, taking into account the polycrystalline nature and variations within CVD diamond layers. The study involves Raman spectroscopy analysis before and after hydrogen treatment near T-shape markers on the surface of each studied diamond layer to compare results.
Article
Crystallography
Ewelina Nowak, Miroslaw Szybowicz, Alicja Stachowiak, Daria Piechowiak, Andrzej Miklaszewski, Marcin E. Witkowski, Michal Makowski, Winicjusz Drozdowski, Kazimierz Paprocki, Kazimierz Fabisiak, Szymon Los, Marek Trzcinski
Summary: This article investigates the structural and luminescence properties of ZnO microfilms grown on a sapphire substrate using the sol-gel method. The influence of the substrate on the film structure was determined through XRD and Raman methods, while the luminescence of films was studied through various methods such as room-temperature fluorescence, radioluminescence, and thermoluminescence.
Article
Chemistry, Analytical
Szymon Los, Kazimierz Fabisiak, Kazimierz Paprocki, Miroslaw Szybowicz, Anna Dychalska
Summary: Polycrystalline diamonds were synthesized on n-type single crystalline Si wafer using Hot Filament CVD method, and their conductivity and localized states densities were investigated at different temperatures. It was found that the surface hydrogenation of diamond films may play a crucial role in tuning transport properties.
Article
Crystallography
Rim Boubakri, Miroslaw Szybowicz, Mariola Sadej, Sarra Soudani, Frederic Lefebvre, Valeria Ferretti, Cherif Ben Nasr, Kamel Kaabi
Summary: Two new complexes were synthesized and characterized by single crystal X-ray diffraction, elemental analysis, and IR spectroscopy. The compounds exhibit different coordination geometries and intermolecular interactions, as revealed by Hirshfeld surfaces and vibrational spectroscopy.
Article
Chemistry, Physical
Szymon Los, Kazimierz Fabisiak, Kazimierz Paprocki, Miroslaw Szybowicz, Anna Dychalska, Ewa Spychaj-Fabisiak, Wojciech Frankow
Summary: Undoped polycrystalline diamond films were deposited on n-type silicon using the HF CVD technique. The presence of sp2 hybridized carbon bonds in the diamond layers was confirmed, and hydrogenation was found to affect the electrical properties of the heterojunctions. Hydrogenation was shown to reduce the potential barrier at the grain boundaries, which may have implications for hydrogen passivation in microelectronics.
Article
Chemistry, Physical
Szymon Los, Kazimierz Fabisiak, Kazimierz Paprocki, Wojciech Kozera, Tomasz Knapowski, Miroslaw Szybowicz, Anna Dychalska
Summary: This study investigates the electrical parameters of the polycrystalline diamonds' p-PCD/n-Si heterojunction by analyzing temperature-dependent current-voltage characteristics. The results show that the ideality factor and energy barrier height of the heterojunction are strongly influenced by temperature. The observed temperature dependencies are attributed to imperfections at the heterojunction interface and non-homogeneous distribution of potential barrier heights.
Article
Chemistry, Multidisciplinary
Pawel Kasprzak, Miroslaw Szybowicz, Maciej Glowacki
Summary: The aim of this study was to investigate the relationship between deformation level, degeneration rate of knee joint, and subchondral bone structure changes in women with osteoarthritis. The patients diagnosed with primary knee osteoarthritis and scheduled for knee arthroplasty were evaluated clinically and radiologically. Cartilage and bone samples were collected from 30 patients during surgery, and Raman spectroscopy was used to analyze the obtained spectra. The results showed a correlation between deformation level, degeneration rate, and changes in bone microstructure. This study confirmed the utility of Raman spectroscopy for further research and early diagnosis and treatment of knee osteoarthritis.
APPLIED SCIENCES-BASEL
(2023)
Review
Crystallography
Ewelina Nowak, Edyta Chlopocka, Miroslaw Szybowicz
Summary: This paper provides an overview of the influence of various modifications on ZnO-based RRAM. It presents the motivation for creating new memory technology and explains the resistive switching mechanism, including its response to active layer and electrode selection. A comparison of ZnO devices assembled via different deposition methods is made. The manuscript also reports additional treatment of the active layer and electrodes improving the performance. Furthermore, the paper highlights the influence of different dopants on the device characteristics and reviews previous investigations of including inserting layers and nanostructures into ZnO-based RRAM.
Article
Chemistry, Multidisciplinary
K. Jankowski, J. Jablonska, P. Uznanski, S. Caluch, M. Szybowicz, R. Brzozowski, A. Ostafin, M. Kwasny, M. Tomasik
Summary: This article presents a method for producing gold nanoparticles using high voltage arc discharge in distilled water. Various analytical techniques were used to characterize the obtained nanoparticles, showing that this method is a simple and effective way to obtain stable gold nanoparticles under environmentally friendly conditions at relatively low production costs.
Article
Polymer Science
Ewelina Nowak, Edyta Chlopocka, Miroslaw Szybowicz, Alicja Stachowiak, Wojciech Koczorowski, Daria Piechowiak, Andrzej Miklaszewski
Summary: This paper examines the properties of ZnO layers grown using different aminoalcohols at different concentration rates, and discusses the influence of the stabilizer on the morphology and optical properties of the samples. By comparing the role of different aminoalcohols in structure formation, it provides reference for the preparation of ZnO samples for specific applications.
Article
Multidisciplinary Sciences
Joanna Jablonska, Krzysztof Jankowski, Mikolaj Tomasik, Dariusz Cykalewicz, Pawel Uznanski, Szymon Caluch, Miroslaw Szybowicz, Joanna Zakrzewska, Pawel Mazurek
Summary: This article introduces the synthesis of silver nanoparticles in a high-voltage 50 Hz alternating current electric arc for the first time, and examines the obtained nanoparticles using various analytical techniques. The study also discusses a simple and cost-effective method for the preparation of silver nanoparticles using a designed power supply unit.
SN APPLIED SCIENCES
(2021)
