Article
Nanoscience & Nanotechnology
Ayman Rezk, Sabina Abdul Hadi, Juveiriah M. Ashraf, Aisha Alhammadi, Wafa Alnaqbi, Aravindh Kumar, Ghada Dushaq, Mahmoud S. Rasras, Krishna C. Saraswat, Munir Nayfeh, Ammar Nayfeh
Summary: The study demonstrates that by coating silicon nanoparticles on the surface of germanium, the reflectivity of germanium in the visible and blue-UV spectrum can be significantly reduced, which is of great importance for photovoltaic applications.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Physical
Robert B. Heimann
Summary: Silicon nitride ceramics excel in mechanical, thermal, and chemical properties, making them suitable for applications in various technically challenging fields. Recent research has also made silicon nitride suitable for biomedical applications.
Article
Chemistry, Organic
Jiawei Guo, Song Liu, Qinjiao Pang, Hongyun Zhang, Lu Gao, Li Chen, Zhenlei Song
Summary: An efficient synthesis of silacyclohexanones with different silyl substituents has been developed using a [Rh(coe)(2)Cl](2)/PCy3 catalyst, which can be further oxidized to form silacyclohexadienones and transformed into silicon analogs of 2-deoxystreptamine or exo-alkylidenesilacyclohexadienes.
Review
Chemistry, Multidisciplinary
Adria Garcia-Gil, Subhajit Biswas, Justin D. Holmes
Summary: Ge nanowires play a significant role in the development of new functional microelectronic modules. Exploring alternative growth paradigms such as self-seeded nanowire growth and understanding its potential applications in energy storage and nanoelectronic devices are crucial.
Article
Chemistry, Inorganic & Nuclear
Maximilian Dehmel, Marius A. Wuensche, Helmar Goerls, Robert Kretschmer
Summary: This study successfully synthesized bis(chlorotetrylenes) of Si, Ge, and Sn starting from backbone-bridged bis(amidine) 1, and fully characterized the complexes while investigating their molecular solid-state structures using single-crystal X-ray diffraction analysis.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yulia Goldshtein, Yuri Glagovsky, Boris Tumanskii, Natalia Fridman, Dmitry Bravo-Zhivotovskii, Yitzhak Apeloig
Summary: This article reports the synthesis and characterization of the first isolated genuine germenyl lithiums. Several reactions and products of these compounds are described. Additionally, the structure and properties of the generated germenyl radicals are revealed through experiments and calculations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Physics, Multidisciplinary
Xin Gan, Junyang An, Junzhuan Wang, Zongguang Liu, Jun Xu, Yi Shi, Kunji Chen, Linwei Yu
Summary: In this study, a self-oscillating growth phenomenon of catalyst droplets was utilized to achieve high-frequency alternating growth of ultrathin crystalline Si and Ge nano-slates. A subsequent selective etching process generated ultrafine standing c-Si nanosheets. This method doesn't require expensive lithography and growth control.
CHINESE PHYSICS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Dominik Vitek, Ales Ruzicka, Libor Dostal, Roman Jambor
Summary: The effect of chelating ligands and Ge->B interaction on the strength of the Ge OtBu bond was studied, which resulted in the isolation of Ge(II) carbamate. Alcoholysis exchange reactions between substituted phenols and compounds 1 and 2 were studied to synthesize functionalized Ge(II) alkoxides. Phosphane-decorated Ge(II) alkoxides were tested as ligands in reactions with (COD)W(CO)(4) and BH3, leading to the isolation of new complexes.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Physics, Applied
Caroline Schwinge, Kati Kuehnel, Jennifer Emara, Lisa Roy, Kati Biedermann, Wenke Weinreich, Sabine Kolodinski, Maciej Wiatr, Gerald Gerlach, Maik Wagner-Reetz
Summary: The power factor of CMOS-compatible SiGe films was investigated, and a high power factor was achieved by controlling the doping concentration. The results demonstrate the potential of SiGe as a promising material for the production of thermoelectric embedded applications.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Organic
Hai -Bing Ye, Xu-Yu Zhou, Lei Li, Xiang-Kui He, Jun Xuan
Summary: Here we present a simple photochemical method for constructing phenanthridines with synthetically useful succinate units. The reaction proceeds under visible-light irradiation using cheap eosin Y Na as the photoredox catalyst and a diazo compound as the succinate precursor. A wide range of phenanthridines are obtained in moderate to good yields under the optimal conditions. The succinate units in the final heterocycles can be easily transformed into valuable structures such as gamma-butyrolactone, dihydrofuran-2(3H)-one, and tetrahydrofuran. Mechanistic experiments support the proposed mechanism.
Article
Optics
Halil Can Nalbant, Fatih Balli, Tolga Yelboga, Arda Eren, Ahmet Sozak
Summary: This work presents the design and fabrication of high transmission metalenses operating at the long-wave infrared spectrum. By employing an anti-reflection coating, the reflection losses are minimized while maintaining full wavefront control at the central wavelength. Experimental results demonstrate diffraction-limited imaging of the fabricated metalenses at the design wavelength.
Article
Chemistry, Multidisciplinary
Anna S. Eremina, Ilya M. Gavrilin, Nikolay S. Pokryshkin, Alexander Yu Kharin, Alexander Syuy, Valentin S. Volkov, Valery G. Yakunin, Sergei S. Bubenov, Sergey G. Dorofeev, Sergey A. Gavrilov, Victor Yu Timoshenko
Summary: Layers of germanium nanowires were grown on titanium foils using metal-assisted electrochemical reduction. The addition of sodium silicate improved the crystallinity and size of the nanowires. Ge nanowire films were prepared by removing and redepositing the nanowires, and their electrical conductivity was studied. The presence of silicon impurities in the nanowires affected the conductivity, and the films exhibited a strong sensor response to different liquid vapors.
Article
Engineering, Electrical & Electronic
Ismael Charlet, Yohan Desieres, Delphine Marris-Morini, Frederic Boeuf
Summary: This paper presents a model for optimizing capacitive modulators using full-Si or with a thin layer of strained SiGe, along with an optimization algorithm to estimate the highest optimal modulation amplitude for different operating frequencies.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Spectroscopy
E. B. Chubenko, N. L. Grevtsov, V. P. Bondarenko, I. M. Gavrilin, A. V. Pavlikov, A. A. Dronov, L. S. Volkova, S. A. Gavrilov
Summary: This study investigates the regularities of composition changes in silicon/germanium alloy thin films formed by electrochemical deposition of germanium into a porous silicon matrix on a single-crystalline silicon substrate, followed by rapid thermal annealing (RTA) at temperatures ranging from 750 to 950 degrees Celsius. Raman spectroscopy analysis reveals that increasing the RTA temperature results in a decrease in the germanium concentration in the formed film. Moreover, reducing the RTA duration at a given temperature allows for the production of films with higher germanium concentration and the ability to control the composition of the thin silicon/germanium alloy films by adjusting the RTA temperature and duration.
JOURNAL OF APPLIED SPECTROSCOPY
(2022)
Article
Materials Science, Multidisciplinary
Abderrezak Belabbes, Friedhelm Bechstedt, Silvana Botti
Summary: By conducting ab initio calculations, it has been demonstrated that perturbed hexagonal germanium is an excellent material for active optoelectronic devices in the infrared region. Perturbing the system through atomic substitution and applying strain can greatly enhance the oscillator strength and energy transition of the material, making it suitable for light emitting devices.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Chemistry, Organic
Yogesh W. More, Sunil U. Tekale, Nitishkumar S. Kaminwar, Laszlo Kotai, Tibor Pasinszki, Pravin S. Kendrekar, Rajendra P. Pawar
CURRENT ORGANIC SYNTHESIS
(2019)
Article
Chemistry, Physical
Tibor Pasinszki, Tamas Voros, Gabor Vass, Gyorgy Tarczay, Istvan Jalsovszky
JOURNAL OF MOLECULAR STRUCTURE
(2019)
Article
Materials Science, Multidisciplinary
Tibor Pasinszki, Melinda Krebsz, Deepak Chand, Laszlo Kotai, Zoltan Homonnay, Istvan E. Sajo, Tamas Vaczi
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Mohammed Boulhaoua, Ana Torvisco, Tibor Pasinszki
RESEARCH ON CHEMICAL INTERMEDIATES
(2020)
Review
Chemistry, Multidisciplinary
Tibor Pasinszki, Melinda Krebsz
Review
Food Science & Technology
Tibor Pasinszki, Jimaima Lako, Todd E. Dennis
Article
Environmental Sciences
Melinda Krebsz, Tibor Pasinszki, Tran Thanh Tung, Md Julker Nine, Dusan Losic
Summary: This study developed a method for synthesizing bio-graphene foams from renewable sources, which exhibited outstanding adsorption performance in removing chromate ions and oil contaminants from water. The unique porous structure and high specific surface area of the bio-graphene foams make them effective adsorbents for environmental applications, with potential for use in environmental remediation.
Article
Chemistry, Physical
Pavel Cherepanov, Melinda Krebsz, Rebecca Y. Hodgetts, Alexandr N. Simonov, Douglas R. MacFarlane
Summary: The study investigated the effects of parameters such as electrode potential, convection, N-2 pressure, and water content on the electrochemical production of ammonia. Results showed that a closely linear ammonia yield and approximately constant faradaic efficiency can be maintained during experiments lasting up to 60 hours. Improved control of reaction conditions led to ammonia yield rates above 1 nmol s(-1) cm(-2) and faradaic efficiencies as high as 60%.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Biochemistry & Molecular Biology
Melinda Krebsz, Laszlo Kotai, Istvan E. Sajo, Tamas Vaczi, Tibor Pasinszki
Summary: Nickel nanoparticles supported on carbon microspheres (Ni-NP/C) were successfully synthesized using a novel, low-cost and facile method for heterogeneous catalysis. The physical and chemical properties of Ni-NP/C were characterized in detail. Ni-NP/C exhibited efficient catalytic activity in the reduction of 4-nitrophenol to 4-aminophenol by sodium borohydride.
Article
Nanoscience & Nanotechnology
Melinda Krebsz, Sam Johnston, Cuong Ky Nguyen, Yvonne Hora, Binayak Roy, Alexandr N. Simonov, Douglas R. MacFarlane
Summary: The composition of the electrolyte solution significantly affects the kinetics and coulombic efficiency of the electrochemical magnesium plating and stripping processes. This study systematically investigated the Mg0/2+ process with different combinations of electrolytes in the DME solvent. The results showed that the presence of BH4- is essential for high coulombic efficiency, while the presence of Li+ and TFSI- is necessary for high rates and preventing passivation of the magnesium surface. The optimal Mg0/2+ performance was achieved at a mole ratio of [Mg(BH4)(2)]:[LiTFSI] of 1:2.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Environmental Sciences
Tibor Pasinszki, Shilvee S. S. Prasad, Melinda Krebsz
Summary: Aquatic environments are important sources of healthy and nutritious foods; however, clams, mussels, and oysters can pose health risks to consumers if contaminated by heavy metals. Monitoring and measuring heavy-metal concentrations in these organisms is crucial for human health and food security. This paper provides a comprehensive review of the methods for quantifying heavy metals in clams, mussels, and oysters.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Chemistry, Multidisciplinary
Mohammed Boulhaoua, Tibor Pasinszki, Ana Torvisco, Rita Olah-Szabo, Szilvia Bosze, Antal Csampai
Summary: Chemotherapy is crucial in cancer treatment, and developing new drugs with minimal side effects is important. A series of novel 1,2,4-thiadiazoles bearing erlotinib were synthesized and tested for anti-proliferative effects against various cancer cell lines. Some compounds showed promising anti-cancer activity, particularly the isomer mixture of bis-erlotinib substituted thiadiazoles.
