Article
Biochemistry & Molecular Biology
Denise Maria Figueiredo Araujo, Iranildo Jose da Cruz Filho, Tiago Santos, Daniel Tarciso Martins Pereira, Diego Santa Clara Marques, Alice da Conceicao Alves de Lima, Thiago Mendonca de Aquino, George Jackson de Moraes Rocha, Maria do Carmo Alves de Lima, Fatima Nogueira
Summary: In this study, alkaline lignins extracted from Buchenavia viridiflora, a tree species from the Amazon rainforest, were investigated for their different biological activities. The lignins showed antioxidant, anti-inflammatory, anti-tumor, and antiparasitic activities, with low cytotoxicity. These findings suggest the potential pharmaceutical and biomedical applications of the lignins studied.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Chemistry, Medicinal
Pathum Chandika, Pipuni Tennakoon, Tae-Hee Kim, Se-Chang Kim, Jae-Young Je, Jae-Il Kim, Bonggi Lee, BoMi Ryu, Hyun Wook Kang, Hyun-Woo Kim, Young-Mog Kim, Chang Su Kim, Il-Whan Choi, Won Sun Park, Myunggi Yi, Won-Kyo Jung
Summary: Coagulation is a defense mechanism that prevents bleeding, but excessive clot formation can lead to serious diseases. The use of anticoagulants like heparin is limited, so there is interest in studying natural anticoagulants from marine sources.
Article
Chemistry, Physical
Jia Wang, Dongsheng Yu, Ying Li, Kaifei Miao, Xingfu Bao, Min Hu, Kan Zhang
Summary: In this study, a TaAgB solid solution coating was successfully prepared by magnetron sputtering technology with Ag-doping. The TaAgB coating exhibited high mechanical hardness, excellent tribological performance in a saliva environment, and good biocompatibility and antibacterial ability. It has great potential as a protective coating for orthodontic materials.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Weifeng Zhong, Yufang Song, Jiwei Chen, Shuai Yang, Lihao Gong, Dongjian Shi, Weifu Dong, Hongji Zhang
Summary: A synergistic strategy of acetic acid induction and salting-out is proposed to construct strong and tough conductive hydrogels. By introducing acetic acid into the PVA/DMSO system and triggering the salting-out process, a densely cross-linking network and splendid mechanical capabilities are achieved. The resulting hydrogels show satisfactory ionic conductivity and stable output, making them suitable for flexible supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Crystallography
M. Longo, R. J. Heigl, T. E. Schrader
Summary: The isothermal crystallization kinetics of hen-egg-white Lysozyme was investigated through a time-resolved neutron diffraction experiment, observing the temporal evolution of Bragg peaks and analyzing small angle neutron scattering curves. A correlated behavior between Lysozyme concentration decrease and crystallization fraction increase was observed, with parameters compatible with previous studies. The use of constant neutron flux highlighted the strength of neutrons in studying biological samples without radiation damage.
JOURNAL OF CRYSTAL GROWTH
(2021)
Review
Biochemistry & Molecular Biology
Saeed Farzamfar, Megan Richer, Mahya Rahmani, Mohammad Naji, Mehdi Aleahmad, Stephane Chabaud, Stephane Bolduc
Summary: Urethral reconstruction strategies are limited due to lack of suitable tissues that can withstand urine exposure. However, tissue engineering using biological macromolecule-based scaffolds offers potential solutions to prevent urine leakage. This review discusses recent advances, applications, and challenges in urethral reconstruction using biological macromolecule-based scaffolds.
Article
Biochemistry & Molecular Biology
Zahra Abpeikar, Moosa Javdani, Seyed Abbas Mirzaei, Akram Alizadeh, Lida Moradi, Mostafa Soleimannejad, Shahin Bonakdar, Shiva Asadpour
Summary: A hybrid scaffold with surface modified by gelatin, chitosan, and hyaluronic acid biomacromolecules was developed and evaluated for meniscus regeneration. The scaffolds showed enhanced swelling and degradation rate, properties close to native meniscus tissue, and successful promotion of chondrocyte marker genes expression. The animal study demonstrated significant regeneration after treatment with adipose-derived mesenchymal stem cells-loaded scaffold.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Qiuyu Chen, Shuhua Liang, Bingxue Li, Zheng Chen, Xiaoyan Song, Longchao Zhuo
Summary: In this work, WMo nanopowders were prepared using sol-gel synthesis combined with hydrogen reduction, and the effect of temperature on the reaction process was investigated. It was found that pure WMo nanopowders could be completely reduced at a low temperature, indicating the potential for efficient synthesis under mild conditions.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Biology
Clement E. Blanchet, Adam Round, Haydyn D. T. Mertens, Kartik Ayyer, Melissa Graewert, Salah Awel, Daniel Franke, Katerina Doerner, Sasa Bajt, Richard Bean, Tania F. Custodio, Raphael de Wijn, E. Juncheng, Alessandra Henkel, Andrey Gruzinov, Cy M. Jeffries, Yoonhee Kim, Henry Kirkwood, Marco Kloos, Juraj Knoska, Jayanath Koliyadu, Romain Letrun, Christian Loew, Jana Makroczyova, Abhishek Mall, Rob Meijers, Gisel Esperanza Pena Murillo, Dominik Oberthuer, Ekaterina Round, Carolin Seuring, Marcin Sikorski, Patrik Vagovic, Joana Valerio, Tamme Wollweber, Yulong Zhuang, Joachim Schulz, Heinrich Haas, Henry N. Chapman, Adrian P. Mancuso, Dmitri Svergun
Summary: Free-electron lasers (FEL) are revolutionizing X-ray-based structural biology methods. While protein crystallography is already routinely performed at FELs, Small Angle X-ray Scattering (SAXS) studies of biological macromolecules are not as prevalent. SAXS allows the study of the shape and overall structure of proteins and nucleic acids in solution, in a quasi-native environment.
COMMUNICATIONS BIOLOGY
(2023)
Article
Biology
Clement E. Blanchet, Adam Round, Haydyn D. T. Mertens, Kartik Ayyer, Melissa Graewert, Salah Awel, Daniel Franke, Katerina Doerner, Sasa Bajt, Richard Bean, Tania F. Custodio, Raphael de Wijn, E. Juncheng, Alessandra Henkel, Andrey Gruzinov, Cy M. Jeffries, Yoonhee Kim, Henry Kirkwood, Marco Kloos, Juraj Knoska, Jayanath Koliyadu, Romain Letrun, Christian Loew, Jana Makroczyova, Abhishek Mall, Rob Meijers, Gisel Esperanza Pena Murillo, Dominik Oberthuer, Ekaterina Round, Carolin Seuring, Marcin Sikorski, Patrik Vagovic, Joana Valerio, Tamme Wollweber, Yulong Zhuang, Joachim Schulz, Heinrich Haas, Henry N. Chapman, Adrian P. Mancuso, Dmitri Svergun
Summary: Free-electron lasers (FELs) are revolutionizing X-ray-based structural biology methods, and have already been routinely used in protein crystallography. However, Small Angle X-ray Scattering (SAXS) studies of biological macromolecules are not as common. SAXS allows the study of the shape and overall structure of proteins and nucleic acids in solution.
COMMUNICATIONS BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Emre Brookes, Mattia Rocco
Summary: Recent advances in AI programs for protein structure prediction have revolutionized the field, but the reliability in solution needs to be assessed. Hydrodynamic parameters and small-angle X-ray scattering can provide rapid evaluation of structure likelihood, and a database has been implemented to calculate these parameters from AlphaFold structures. Some limitations of AlphaFold have been addressed.
SCIENTIFIC REPORTS
(2022)
Review
Biochemistry & Molecular Biology
Celia Andres Juan, Jose Manuel Perez de la Lastra, Francisco J. Plou, Eduardo Perez-Lebena
Summary: Living species are constantly exposed to oxidants, leading to oxidative stress and disease. The induction of oxidative stress is caused by an imbalance between radical species and antioxidant defense systems, which can damage cellular biomolecules.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Medicine, Research & Experimental
Lakshimipriya Sethuram, John Thomas
Summary: Non-healing infected wounds pose a global epidemic with high mortality rates and management costs. Chronic wound infections, especially diabetic wounds, continue to be a problem. Commercial wound therapies have limited potential, hindering tissue re-epithelialization and leading to infections. Nanomaterial-based drug delivery using biological macromolecules shows promise in cost-effective skin re-epithelialization. Research on nanofibers has demonstrated improved cell growth and delivery of bioactive molecules at wound sites. However, targeted drug delivery and tissue regeneration with anti-scarring properties in macromolecule-impregnated nanofibrous mats remain underexplored. This review discusses wound healing concepts, available commercialized wound dressings, electrospun nanofibers impregnated with biological macromolecules, and advancements in nanomaterials for tissue engineering, providing insights for developing anti-scarring wound scaffolds with high efficacy in drug delivery.
BIOMEDICINE & PHARMACOTHERAPY
(2023)
Review
Oncology
Naser Amini, Peiman Brouki Milan, Vahid Hosseinpour Sarmadi, Bahareh Derakhshanmehr, Ahmad Hivechi, Fateme Khodaei, Masoud Hamidi, Sara Ashraf, Ghazaleh Larijani, Alireza Rezapour
Summary: This review introduces the application of microorganism-derived biological macromolecules in tissue engineering. These natural-based materials can be used as biological material in scaffolds to enhance regeneration in damaged tissues and contribute to cosmetic and dermatological applications.
FRONTIERS OF MEDICINE
(2022)
Article
Physics, Applied
Michael Baitinger, Hong Duong Nguyen, Christophe Candolfi, Iryna Antonyshyn, Katrin Meier-Kirchner, Igor Veremchuk, Valeriy Razinkov, Mykola Havryluk, Raul Cardoso-Gil, Ulrich Burkhardt, Bodo Bohme, Lukyan Anatychuk, Yuri Grin
Summary: The study successfully upscaled the synthesis of the p-type semiconductor Ba7.8Au5.33Ge40.67 with clathrate-I structure and achieved a thermoelectric figure of merit ZT of around 0.9 at 670 K. By using a carbon layer as a diffusion barrier, sustainable electrical contacts were established at elevated application temperatures.
APPLIED PHYSICS LETTERS
(2021)
Article
Veterinary Sciences
Kohei Nishikaku, Tatsuo Noguchi, Satoshi Murakami, Yasushi Torii, Tomoko Kobayashi
Summary: In this study, BLVgp51 sequences from FFPE specimens made from 1974 to 2000 were analyzed using PCR and sequencing. The researchers successfully obtained BLV proviral genome sequences from 94% of the samples and reconstructed multiple BLVgp51 sequences. The results showed that BLV genotype 1 has been circulating in Japan since the 1970s and the detection of BLV proviral genome depends on storage conditions rather than storage period.
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2022)
Article
Crystallography
Akari Nishigaki, Mihoko Maruyama, Shun-ichi Tanaka, Hiroshi Y. Yoshikawa, Masayuki Imanishi, Masashi Yoshimura, Yusuke Mori, Kazufumi Takano
Summary: The report highlights the effectiveness of cavitation bubbles generated by femtosecond laser and ultrasonic irradiations in controlling polymorph crystallization, as well as the generation of cavitation bubbles by dropping a vial. The study demonstrates the crystallization of acetaminophen by drop impact and confirms the potency of the air-liquid interface in metastable phase formation. The phenomenon of crystallization by drop impact is considered a new development in the field.
Article
Biochemistry & Molecular Biology
Rafida Razali, Fikran Aranda Fahrudin, Vijay Kumar Subbiah, Kazufumi Takano, Cahyo Budiman
Summary: This study successfully expressed a small-sized bromelain from MD2 pineapple and purified 14 mg of pure product. The bromelain showed optimal activity at 50 degrees C and pH 8.0, modulated by divalent ions, and exhibited the ability to scavenge DPPH.
Article
Biochemistry & Molecular Biology
Satoshi Murakami, Hiroaki Adachi, Hiroyoshi Matsumura, Kazufumi Takano, Tsuyoshi Inoue, Yusuke Mori
Summary: In this study, shadowgraph was used to monitor the migration and separation of proteins in polyacrylamide gels in real time without staining. This method provides instant protein profiles in the early stage of electrophoresis, saving time and reducing waste.
JOURNAL OF BIOCHEMISTRY
(2023)
Article
Crystallography
Mihoko Maruyama, Hiroshi Y. Yoshikawa, Kazufumi Takano, Masashi Yoshimura, Yusuke Mori
Summary: Polymorphism is crucial in organic solid-state chemistry, and the control of crystal polymorphism involves nucleation, crystal growth, and phase transition. Understanding the phase transition from metastable to stable phase is essential.
JOURNAL OF CRYSTAL GROWTH
(2023)
Article
Chemistry, Multidisciplinary
Chikashi Ota, Hikari Suzuki, Shun-ichi Tanaka, Kazufumi Takano
Summary: This study investigates the molecular mechanism of ligand-protein interactions with flexible binding sites using RNase HI and ANS as a model system. The results show that the crowding effect in a crowded environment leads to the binding of ANS molecules to additional binding sites, resulting in a change in the fluorescence behavior. The fluorescence vibronic structure analysis provides detailed information on the structure of ANS and the binding sites, suggesting a potential mechanism for the dispersion of binding pathways.
Article
Microbiology
Purnendu Bhowmik, Nagakumar Bharatham, Satoshi Murakami, Vasanthi Ramachandran, Santanu Datta
Summary: OqxB, a member of the RND efflux pump family, is widely recognized as a major contributor to antimicrobial resistance. It is predominantly present in Klebsiella spp. and contributes to resistance against antibiotics like nitrofurantoin, quinolones, b-lactams, and colistin. In addition to Klebsiella spp., oqxB has been found to occur via horizontal gene transfer in other bacterial genera. The crystal structure and key amino acid residues involved in the substrate binding domain of OqxB have been characterized, revealing their importance in efflux and resistance development against fluoroquinolones.
RESEARCH IN MICROBIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Taichi Chisuga, Satoshi Murakami, Akimasa Miyanaga, Fumitaka Kudo, Tadashi Eguchi
Summary: KSQ domains are found in the loading modules of modular type I polyketide synthases (PKSs) and are responsible for decarboxylation. In this study, the authors investigated the interactions between the KSQ domain and the acyl carrier protein (ACP) in the GfsA loading module. They determined the crystal structure of the GfsA KSQ-acyltransferase (AT) didomain in complex with ACP and identified key amino acid residues involved in the interactions. The findings provide important insights into the recognition mechanism and overall architecture of type I PKS modules.
ACS CHEMICAL BIOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mihoko Maruyama, Yutaro Tanaka, Koichi Momma, Yoshihiro Furukawa, Hiroshi Y. Yoshikawa, Rie Tajiri, Masanori Nakamura, Kazumi Taguchi, Shuzo Hamamoto, Ryosuke Ando, Katsuo Tsukamoto, Kazufumi Takano, Masayuki Imanishi, Shigeyoshi Usami, Kenjiro Kohri, Atsushi Okada, Takahiro Yasui, Masashi Yoshimura, Yusuke Mori
Summary: In this study, the researchers investigated the phase transition of calcium oxalate kidney stones and found direct evidence of the solution-mediated phase transition from calcium oxalate dihydrate (COD) to calcium oxalate monohydrate (COM). They examined the crystal phases, crystal textures, and protein distributions within thin sections of the stones. The results showed that the mosaic-like COM crystals are secondary structures formed by the phase transition, while the COD single crystals and concentrically laminated COM are primary structures.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Multidisciplinary Sciences
Mihoko Maruyama, Koichi P. Sawada, Yutaro Tanaka, Atsushi Okada, Koichi Momma, Masanori Nakamura, Ryota Mori, Yoshihiro Furukawa, Yuki Sugiura, Rie Tajiri, Kazumi Taguchi, Shuzo Hamamoto, Ryosuke Ando, Katsuo Tsukamoto, Kazufumi Takano, Masayuki Imanishi, Masashi Yoshimura, Takahiro Yasui, Yusuke Mori
Summary: We conducted a study to quantitatively analyze calcium oxalate (CaOx) kidney stones at the micrometer level, with a focus on the identification of calcium oxalate monohydrate (COM) and dihydrate (COD). We used Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (PXRD), and microfocus X-ray computed tomography measurements (microfocus X-ray CT) to compare their results. By analyzing the FTIR spectrum at the 780 cm(-1) peak, we successfully achieved a reliable analysis of the COM/COD ratio. This quantitative analysis method provides valuable information on the composition and formation processes of kidney stones.
Article
Immunology
Kenji Ota, Satoshi Murakami, Kaori Ishihara, Daisuke Sasaki, Tetsuya Usui, Fujiko Mitsumoto-Kaseida, Kei Sakamoto, Kosuke Kosai, Hiroo Hasegawa, Takahiro Takazono, Akitsugu Furumoto, Norichika Asoh, Hiroyuki Yoshimine, Toyomitsu Sawai, Masanari Onizuka, Noriaki Makimoto, Koichi Izumikawa, Hiroshi Mukae, Shigeru Kohno, Katsunori Yanagihara
Summary: The study compared the IgG antibody levels against SARS-CoV-2 receptor binding protein (RBD) after mRNA vaccination between individuals with and without previous infection (PI) for up to 48 weeks. While sustained higher IgG-RBD levels were observed in the PI group after two doses of vaccines, both groups benefited from the booster shots of the third vaccine. This data supports the necessity of booster shots for individuals with previous infection.
Article
Chemistry, Physical
Chikashi Ota, Tomoya Konishi, Shun-ichi Tanaka, Kazufumi Takano
Summary: Protein-ligand interactions are important in crowded cellular environments. This study investigates the use of ANS-ICD to analyze local conformational changes at binding sites. The results show distinct changes in the ANS-ICD spectra, indicating its potential for analyzing internal protein conformation. Temperature-dependent measurements reveal different denaturation pathways in crowded and diluted environments.
Article
Chemistry, Multidisciplinary
Akari Nishi, Hikaru Matsui, Azumi Hirata, Atsushi Mukaiyama, Shun-ichi Tanaka, Takuya Yoshizawa, Hiroyoshi Matsumura, Ryota Nomura, Kazuhiko Nakano, Kazufumi Takano
Summary: In this study, the researchers focused on the structure and activity of collagen-binding proteins from Streptococcus mutans. They found that the N1 and N2 domains as well as the linker region are important for collagen binding. Understanding these mechanisms could potentially lead to the development of CBD inhibitors for infective endocarditis caused by S. mutans.
CHEMISTRY-SWITZERLAND
(2023)
Article
Veterinary Sciences
Shinichiro Hirai, Eiji Yokoyama, Yuh Shiwa, Taichiro Ishige, Naoshi Ando, Takeshi Shimizu, Satoshi Murakami
Summary: This study analyzed 80 strains of enterohemorrhagic Escherichia coli O157:H7/H- using three SNP panels and observed partial concordance of SNP types among the panels. Different genotypes were identified within certain clades, indicating the need for further subdivision. The low diversity observed in lineage I may be due to its recent divergence. The study successfully interpreted previous genotype distribution data, supporting its findings with previous literature.
JOURNAL OF VETERINARY MEDICAL SCIENCE
(2022)
Article
Crystallography
Jianzheng Hu, Long Yan, Ning Zhou, Yao Chen, Xiaoni Yang, Lianqiao Yang, Shiping Guo
Summary: The effect and mechanism of carrier gas velocity, V/III ratio, and carrier gas velocity match on the growth rate of AlN were investigated in this study. The results showed that the growth rate of AlN initially increased with hydrogen flow rate, reached saturation, and then decreased monotonically. The turning point value depended on the equipment and process. By increasing the MO VM, the growth rate of AlN could be improved, but the uniformity deteriorated due to turbulence and loss of uniform boundary layer. High quality AlN films were successfully grown on nano-patterned sapphire substrates with improved crystalline quality and atomic smooth surfaces.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Tingting Ma, Yang Li, Kangning Sun, Qinglin Cheng, Sen Li
Summary: This study investigates the melting process and nucleation behavior of sodium crystals using molecular dynamics simulation. The results show good agreement between simulated and experimental values for the melting temperature, density, and radial distribution function of sodium. The diffusion coefficient of liquid sodium increases linearly with temperature, and the homogeneous nucleation rate of melting in superheated sodium crystal exponentially increases with temperature. The findings provide theoretical support for applications involving heat and mass transfer in sodium-related systems.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Hisato Nishii, Shintarou Iida, Akira Yamasaki, Takumi Ikenoue, Masao Miyake, Toshiya Doi, Tetsuji Hirato
Summary: Epitaxial V2O3 films were fabricated on sapphire substrates using mist chemical vapor deposition (mist CVD) method, eliminating the need for high vacuum conditions. The films can be grown on sapphire substrates even under atmospheric pressure, with the optimal growth temperature at 823 K. The films grown at 823 K exhibit a metal-insulator transition at approximately 155 K. The film on C-plane sapphire exhibits a lower transition temperature compared to those on R- and A-plane sapphire substrates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Jani Jesenovec, Kevin Zawilski, Peter Alison, Stephan J. Meschter, Sambit K. Saha, Andrew J. Sepelak, Peter G. Schunemann
Summary: In this study, NiSb needles were successfully formed in InSb by manipulating the growth rate and adding NiSb. These needle structures in InSb can be used to tune the magnetoresistance of devices. Additionally, undoped InSb crystals demonstrated good infrared transmission at low growth rates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
D. Joseph Daniel, P. Karuppasamy, H. J. Kim
Summary: The 2-amino 4-methyl pyridinium oxalate (2A4MPO) compound was synthesized and its crystal structure, functional groups, thermal stability, electrical properties, and third-order nonlinear optical properties were studied. The results demonstrate that the synthesized crystal has good structural integrity, thermal stability, and potential for third-order nonlinear optical applications.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
C. W. Lan
Summary: The past two decades have witnessed a significant transformation in solar silicon crystal growth, especially in the competition between multi-crystalline silicon (Multi-Si) and mono-crystalline silicon (Mono-Si). The demand for this crucial material has exponentially surged, with silicon solar panels capturing over 95% of the global PV market share. The advancements in crystal growth technology during this period have set historical benchmarks, with the market share shifting from high-performance multi-crystalline silicon (HPM-Si) to CZ silicon.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peiyao Hao, Lili Zheng, Hui Zhang
Summary: A novel design of argon gas tube for removing impurities during silicon ingot growth was developed, and numerical simulations showed that it can effectively extract SiO.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Geetika Sahu, Chanchal Chakraborty, Subhadeep Roy, Souri Banerjee
Summary: This article discusses the novel fractal nature of hydrothermally synthesized MoS2 QDs. By adjusting the reaction time, the study found that the average size of QDs increases and then decreases with longer reaction times. STEM images indicate that shorter reaction times lead to sheet formation, while extended reaction times cause sheets to fragment into QDs.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Pengjian Lu, Wei Huang, Junjun Wang, Haitao Yang, Shiyue Guo, Bin Li, Ting Wang, Chitengfei Zhang, Rong Tu, Song Zhang
Summary: A systematic study on the tetramethylsilane-hydorgen (TMS-H-2) system for the deposition of pure single-crystal SiC by high-temperature chemical vapor deposition (HTCVD) method is conducted. The study investigates the effect of temperature, pressure, and H-2:TMS ratio on the deposition conditions and provides a theoretical basis and guidance for improving the quality and cost of industrial production of single-crystal SiC.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Xinyu Jiang, Liangliang Liu, Yanqing Liu, Yan Wang, Zhaoping Hou
Summary: Investigation on the preparation of anisometric templated textured high entropy or multi-element doped ferroelectric ceramics was conducted using A-site disordered niobate microcrystals. The effects of process parameters on the morphology and chemical composition were studied, and the photocatalytic properties of the microcrystals were evaluated.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Mobashsara Tabassum, Md. Ashraful Alam, Sabrina Mostofa, Raton Kumar Bishwas, Debasish Sarkar, Shirin Akter Jahan
Summary: In this study, high crystallinity copper nanoparticles were synthesized by altering the reaction medium at low temperatures. The results show that changing the reaction medium can reduce the surface energy of precursors and promote the formation of highly crystalline copper nanoparticles.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Ivan Bodnar, Vitaly V. Khoroshko, Veronika A. Yashchuk, Valery F. Gremenok, Mohsin Kazi, Mayeen U. Khandaker, Tatiana I. Zubar, Daria I. Tishkevich, Alex Trukhanov, Sergei Trukhanov
Summary: This work presents the production of single crystals of Cu2ZnGeSe4, a semiconducting quaternary compound, using a gas chemical method with iodine as a transporter. The phase state, crystal structure, and lattice constants of the synthesized samples were refined and determined. The band gap of Cu2ZnGeSe4 was calculated using transmission spectrum and it was found that the band gap increases by 12% with decreasing temperature in the range of 20-300 K.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Timur Malin, Igor Osinnykh, Vladimir Mansurov, Dmitriy Protasov, Sergey Ponomarev, Denis Milakhin, Konstantin Zhuravlev
Summary: The effect of growth temperature on the buffer leakage currents of GaN-on-Si layers was investigated. It was found that higher growth temperature results in lower leakage currents. The defects in GaN layers grown at different temperatures were studied using photoluminescence technique, and a correlation between leakage currents, structural perfection, and donor concentration in GaN-on-Si layers was established. It was also observed that reduced growth temperature leads to the formation of inversion domains.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Thi-Hoai-Thu Nguyen, Jyh-Chen Chen
Summary: The effect of heater power control on heat, flow, and oxygen transport for CCz crystal growth was studied. Shorter upper side heater design could improve crystal quality and growth, but with higher power consumption.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peter Rudolph
Summary: This article presents an overview of selected contributions to the development of crystal growth technology by the Laudise Prize awardee 2023. It discusses various aspects such as shaped crystal growth, the correlation between melt structure and crystal quality, control of intrinsic defects and inclusions, prevention of dislocation cell patterns, and melt growth experiments under a travelling magnetic field.
JOURNAL OF CRYSTAL GROWTH
(2024)