Search Results - "Penkov, Oleksiy V."

A review of recent applications of atmospheric pressure plasma jets for materials processing by Penkov, Oleksiy V., Khadem, Mahdi, Lim, Won-Suk, Kim, Dae-Eun

“…Atmospheric pressure plasma jets (APPJs) have received significant attention due to their combination of simplicity, low cost, and wide possibilities for…”
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Tribology of multilayer coatings for wear reduction: A review by Khadem, Mahdi, Penkov, Oleksiy V., Yang, Hee-Kyung, Kim, Dae-Eun

“…Friction and wear phenomena encountered in mechanical systems with moving components are directly related to efficiency, reliability and life of the system…”
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Superior surface protection governed by optimized interface characteristics in WC/DLC multilayer coating by Nemati, Narguess, Penkov, Oleksiy V., Kim, Dae-Eun

“…This paper introduces a highly durable functional multilayer coating (FMCs) with outstanding mechanical properties using comprehensive design principles…”
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Effects of ultrasonic nanocrystalline surface modification on the tribological properties of AZ91D magnesium alloy by Amanov, Auezhan, Penkov, Oleksiy V., Pyun, Young-Sik, Kim, Dae-Eun

“…A nanocrystalline surface layer of about 100μm thickness was generated on AZ91D Mg alloy using the ultrasonic nanocrystalline surface modification (UNSM)…”
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Multilayer Reflective Coatings for BEUV Lithography: A Review by Uzoma, Paul C, Shabbir, Salman, Hu, Huan, Okonkwo, Paul C, Penkov, Oleksiy V

“…The development of microelectronics is always driven by reducing transistor size and increasing integration, from the initial micron-scale to the current few…”
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Bio-Inspired Hierarchical Micro/Nanostructured Surfaces for Superhydrophobic and Anti-Ice Applications by Zhang, Lansheng, Uzoma, Paul C, Xiaoyang, Chu, Penkov, Oleksiy V, Hu, Huan

“…We report a scalable and cost-effective fabrication approach for constructing bio-inspired micro/nanostructured surfaces. It involves silicon microstructure…”
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Tribological behavior of dual-layer electroless-plated Ag–carbon nanotube coatings by Lee, Hyun-Dai, Penkov, Oleksiy V., Kim, Dae-Eun

“…The tribological behavior of electroless Ag-plated carbon nanotube (CNT) dual-layer coatings was assessed and compared to that of the pure CNT coating. The…”
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High‐sensitive and fast MXene/silicon photodetector for single‐pixel X‐ray imaging by Chen, Yance, Dai, Yue, Bodepudi, Srikrishna Chanakya, Liu, Xinyu, Ma, Yuan, Xing, Shiyu, Di, Dawei, Tian, Feng, Ming, Xin, Liu, Yingjun, Pang, Kai, Xue, Fei, Zhang, Yunyan, Yu, Zexin, Dan, Yaping, Penkov, Oleksiy V., Zhang, Yishu, Qi, Dianyu, Fang, Wenzhang, Xu, Yang, Gao, Chao

“…The demand for high‐performance X‐ray detectors leads to material innovation for efficient photoelectric conversion and carrier transfer. However, current…”
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Investigation of micro-abrasion characteristics of thin metallic coatings by in-situ SEM scratch test by Kim, Chang-Lae, Penkov, Oleksiy V., Shin, Dong-Gap, Kim, Dae-Eun

“…The aim of this study was to elucidate the micro-abrasion characteristics of thin metallic coatings through in-situ visualization of the scratch formation…”
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Friction and Wear Characteristics of C/Si Bi-layer Coatings Deposited on Silicon Substrate by DC Magnetron Sputtering by Penkov, Oleksiy V., Bugayev, Yegor A., Zhuravel, Igor, Kondratenko, Valeriy V., Amanov, Auezhan, Kim, Dae-Eun

“…The tribological behavior of carbon/silicon bi-layer coatings deposited on a silicon substrate by DC magnetron sputtering was assessed and compared to that of…”
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X‐Ray Calc 3: improved software for simulation and inverse problem solving for X‐ray reflectivity by Penkov, Oleksiy V., Li, Mingfeng, Mikki, Said, Devizenko, Alexander, Kopylets, Ihor

“…This work introduces X‐Ray Calc (XRC), an open‐source software package designed to simulate X‐ray reflectivity (XRR) and address the inverse problem of…”
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Deposition of the ZnO transparent electrodes at atmospheric pressure using a DC Arc Plasmatron by Penkov, Oleksiy V., Lee, Heon-Ju, Plaksin, Vadim Y., Mansur, Rakib, Kim, Ji Hun

“…Structure and electrical properties of ZnO films deposited by a DC Arc Plasmatron were studied. Films were deposited at atmospheric pressure on a cold…”
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Durability and degradation mechanism of graphene coatings deposited on Cu substrates under dry contact sliding by Won, Moon-Sub, Penkov, Oleksiy V., Kim, Dae-Eun

“…The durability and degradation mechanism of graphene coatings deposited on Cu substrates under dry contact sliding were assessed. The motivation was to develop…”
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Tunable Molecular Sieving by Hierarchically Assembled Porous Organic Cage Membranes with Solvent-Responsive Switchable Pores by Ghaffar, Abdul, Hassan, Muhammad, Penkov, Oleksiy V., Yavuz, Cafer T., Celebi, Kemal

“…Molecular separations involving solvents and organic impurities represent great challenges for environmental and water-intensive industries. Novel materials…”
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Hard antireflection coatings with enhanced mechanical properties based on gradient structure by Wang, Yusi, Zheng, Tingting, Wu, Pengyuan, Yang, Chenying, Penkov, Oleksiy V., Liu, Yujie, Yuan, Kaixin, Cheng, Yan, Zhang, Yueguang, Shen, Weidong

“…•Developed an advanced antireflection coating using ICP-assisted magnetron sputtering.•Achieved high transmittance (>98.7 % at 420–720 nm) and enhanced scratch…”
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An Efficient Method for the Experimental Characterization of Periodic Multilayer Mirrors: A Global Optimization Approach by Li, Mingfeng, Mikki, Said, Uzoma, Paul C., Penkov, Oleksiy V.

“…This study proposes a new approach to periodic multilayer mirrors (PMMs) characterizations based on measured X-ray reflectivity (XRR) data. Here, XRR data are…”
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Tailoring Mechanical and Optical Properties of Sputtered SiN x /BN Coatings by Wu, Pengyuan, Yu, Tianxiang, Wang, Yusi, Shen, Boyang, Uzoma, Paul C., Shen, Weidong, Penkov, Oleksiy V.

“…The swift evolution of contemporary electronics products, such as flexible screens and wearable electronic devices, highlights the significance of flexible…”
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Hard, Flexible, and Transparent Nanolayered SiNx/BN Periodical Coatings by Penkov, Oleksiy V, Khadem, Mahdi, Kim, Dae-Eun

“…In this study, SiNx/BN periodical nanolayered coatings (PNCs) are developed. PNCs were deposited at the room temperature on plastic and glass substrates. They…”
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Effects of molybdenum-based substrate coatings on tribological performance of graphene films by Min, YouJin, Penkov, Oleksiy V., Khadem, Mahdi, Kim, Dae-Eun

“…Graphene is considered as a promising material for reducing friction and wear, owing to its structural features. The tribological properties of graphene depend…”
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Functional Multi-Nanolayer Coatings of Amorphous Carbon/Tungsten Carbide with Exceptional Mechanical Durability and Corrosion Resistance by Nemati, Narguess, Bozorg, Mansoor, Penkov, Oleksiy V, Shin, Dong-Gap, Sadighzadeh, Asghar, Kim, Dae-Eun

“…A novel functional multilayer coating with periodically stacked nanolayers of amorphous carbon (a:C)/tungsten carbide (WC) and an adhesion layer of chromium…”
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