Article
Energy & Fuels
Kaushlendra Pandey, Bhaskar Chandra Mohanty
Summary: The study demonstrated the growth of phase pure kesterite CZTS thin films by manipulating the target composition and post-sulfurization process. Optimal conditions for phase pure CZTS films were found to be sulfurization at 500 degrees C for 60 min with 1.0 g of sulfur flakes. High temperature or shorter dwell time resulted in the presence of secondary phases and smaller grain size microstructure in the films.
Article
Materials Science, Multidisciplinary
Aniruddh Bahadur Yadav, Gopal Rawat, Basavaraj S. Sannakashappanavar
Summary: This paper presents the preparation of Sn doped ZnO thin films using a low-cost chemical sol-gel spin coating process and the deposition of Ohmic and Schottky electrodes to form a Metal-Semiconductor-Metal (MSM) structure. The UV detection capability of the device was analyzed through electrical characterization, and various parameters including saturation current, ideality factor, and barrier height were calculated. The results showed an increase in forward and reversed bias current when exposed to UV light, and the responsivity and series resistance of the device were also reported.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Gurkan Kurtulus, Tarik Asar, Suleyman Ozcelik
Summary: The effects of Ar sputtering deposition pressure on the optical, structural, morphological, and electrical properties of amorphous InGaZnO thin films were investigated. It was found that the increase in deposition pressure led to decreased surface roughness, decreased optical band gap, and changes in the properties of Schottky diodes based on InGaZnO thin films.
Article
Materials Science, Composites
Li Yang, Shu Jiang, Yuan Chen, Zhenzhen Xu, Qingqing Ni
Summary: By constructing a multi-size film with carbon-tantalum hybrid structure on the surface of carbon fibers, the interfacial bonding and mechanical properties of carbon fiber epoxy composites were effectively improved.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Li Yang, Yuan Chen, Zhenzhen Xu, Hong Xia, Toshiaki Natuski, Yusong Xi, Qingqing Ni
Summary: Carbon films were constructed on the surface of carbon fibers using magnetron sputtering to improve their surface defects and mechanical properties. The tensile properties of the fibers before and after modification were tested, and the effect of the modification method on the tensile properties and dispersion of the breaking strength of the fibers was analyzed. The magnetron sputtering process successfully repaired the surface and improved the dispersion of the breaking strength, while also enhancing the tensile fracture toughness through the crack effect mechanism.
Article
Chemistry, Physical
Stuart Ferrie, Anton P. Le Brun, Gowri Krishnan, Gunther G. Andersson, Nadim Darwish, Simone Ciampi
Summary: Triboelectric nanogenerators are a promising energy technology that can harvest electricity from mechanical energy. By engineering the surface chemistry of silicon with covalent Si-C-bound organic monolayers, friction, wettability, and surface work function can be systematically tuned to maximize output. The study demonstrates a link between surface chemistry modifications and improved current outputs, suggesting novel opportunities for silicon-based triboelectric nanogenerators.
Article
Materials Science, Ceramics
Woochan Jin, Kyounghee Park, Jun Young Cho, Sung-Hwan Bae, Muhammad Siyar, Chan Park
Summary: A smart window based on VO2 is a promising thermochromic glass that can regulate heat flow through windows by solar modulation near room temperature. It requires TC glass with high visible-light transmittance and large difference in infrared transmittance between high- and low-temperature VO2 phases to save energy.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Luisa Fialho, Augusto Costa-Barbosa, Paula Sampaio, Sandra Carvalho
Summary: This study investigates the deposition of zinc-zinc oxide nanoparticles on porous Ta2O5 surfaces to enhance surface antimicrobial activity. The size and amount of nanoparticles, as well as the presence of a thin carbon layer, were explored to modify the surface properties. The results show that surfaces with larger nanoparticles and higher zinc content exhibit better antimicrobial effects, but also induce cell toxicity and cytokine secretion. This research provides insights into the optimal zinc amount for simultaneous inhibition of fungi growth without toxic effects and the antimicrobial mechanisms of zinc-zinc oxide nanoparticles, contributing to future clinical applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jun-Dar Hwang, Bo-Ying Wu
Summary: Magnesium oxide (MgO) was deposited on zinc oxide (ZnO) surface to enhance the performance of visible-blind ultraviolet (UV) metal-semiconductor-metal photodetectors (MSM-PDs). The MgO capping layer greatly reduces the dark current and increases the photo/dark current ratio in the MSM-PDs. X-ray photoelectron spectroscopy analysis shows that the MgO film passivates the ZnO surface and improves the performance of the MSM-PDs.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Physical
Liang Sun, Lifeng Zhu, Chunli Zhang, Weiqiu Chen, Zhonglin Wang
Summary: This study utilizes flexoelectricity to control the performance of silicon-based SBDs, finding significant impact on various performance indicators. Current-voltage characteristics of the SBD under different tip forces were measured using C-AFM, confirming the important role of flexoelectricity.
Article
Physics, Condensed Matter
B. Guzeldir, A. Baltakesmez, M. Saglam
Summary: This study examined the microstructural properties of Silicon carbide (SiC) thin film deposited by radio frequency (RF) sputtering technique and the effects of SiC as an interlayer on the barrier parameters of n-GaP/Pd and n-InP/Pd junctions comparatively.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Biochemistry & Molecular Biology
Mizuki Kobayashi, Fumihiro Nishimura, Jae-Ho Kim, Susumu Yonezawa
Summary: In this study, the surface of PTFE was modified through a combination of gold sputtering and surface fluorination to improve dyeability. The modified PTFE substrates showed increased surface roughness and negatively charged surface, which resulted in enhanced dye staining intensity. These modified PTFE substrates may find wide applications in dyeing, hydrophilic membrane filters, and other adsorption needs.
Article
Chemistry, Physical
Zakir Caldiran
Summary: This study investigated the effect of lithium fluoride (LiF) as an interface material on basic device parameters with different contact metals. Results showed that LiF interface material increased the barrier height compared to the reference device, with varying effects for different metals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Faizan Ahmad, Kavindra Kandpal, Pramod Kumar
Summary: The study examines the electrical performance of a Ge-TI-based heterojunction device, focusing on the Metal/n-Ge/Bi2Te3 heterojunction with different metallic contacts. The Pt/n-Ge/Bi2Te3 heterostructure shows the best rectification ratio, figure of merit, ideality factor, and small series resistance among the tested contacts. The transport mechanisms, such as space-charge limited current and ohmic conduction, are found to influence the performance of these heterojunctions at varying voltages.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Review
Materials Science, Ceramics
Mir Saman Safavi, Maria A. Surmeneva, Roman A. Surmenev, Jafar Khalil-Allafi
Summary: This review examines the development of hydroxyapatite-based composite and multilayer bio-coatings fabricated using radio frequency magnetron sputtering. It highlights the importance of assessing variables such as chemical composition, reinforcing phase(s), operating conditions, and treatments in determining the final characteristics of the bio-coatings. Challenges and future prospects of these systems are also discussed in detail.
CERAMICS INTERNATIONAL
(2021)
