Article
Nanoscience & Nanotechnology
Luhua Chen, Long Chen, Jian Chu, Shuai Yang, Zhongge Ma, Zhiyuan Jia, Jinhui Song
Summary: With the development of wearable electronics, the demand for high-performance photodetectors with smaller size, lower power consumption, and higher sensitivity has increased. Photodetectors based on one-dimensional zinc oxide nanowires have been intensively investigated, but they can only detect ultraviolet light. This paper reports a heterojunction photodetector based on ZnO/CuO/NiO core-shell-shell nanowires, which shows a fast response and a large sensitivity under UV irradiation. The results indicate that core-shell-shell heterojunction nanostructures can be used to develop high-performance photodetectors for UV-vis broadband photosensing applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Physics, Multidisciplinary
Majid Zamani, Zoheir Kordrostami
Summary: This paper presents the design of an optimized and efficient nanocone array solar cell, which achieves a performance improvement of nearly 18% compared to the non-optimized structure by adding a shell layer and extracting optimal design parameters. The goal of maximizing the current density is achieved through the particle swarm optimization algorithm.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Chemistry, Analytical
Marina Musa, Takao Yasui, Kazuki Nagashima, Masafumi Horiuchi, Zetao Zhu, Quanli Liu, Taisuke Shimada, Akihide Arima, Takeshi Yanagida, Yoshinobu Baba
Summary: This research utilized atomic layer deposition (ALD) to modify ZnO nanowires, creating a ZnO/SiO2 (core/shell) nanowire microfluidic device for the capture of CpG-rich single-stranded DNAs (ssDNA). By investigating the relationship between structural changes in nanowires with varying ALD cycles and capture efficiency, it was discovered that finding the optimum number of ALD cycles was crucial for successful coating and capturing biomolecules. High capture efficiency of ssDNAs (86.7%) was achieved under optimal conditions, showing potential for further analysis of CpG sites in cancer-related genes and benefiting the future design of core/shell nanowires for biomedical applications.
ANALYTICAL METHODS
(2021)
Article
Materials Science, Ceramics
Yu-Sheng Tsai, Jyun-Rong Chen, Chang-Hsueh Lee, Chih-Chen Kuo, Ya-Hsuan Lin, Chun-Chieh Wang, Yu-Cheng Chang, YewChung Sermon Wu, Hsiang Chen
Summary: In this study, different types of ZnO-based nanocomposites were fabricated and characterized. The etching of ZnO nanorods increased the surface area and defect concentration, while sulfurization of the ZnO/ZnS nanotubes reduced defects and improved surface roughness. The results indicate that ZnO and ZnO/ZnS nanotubes hold promise for sensing device applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Orhan Sisman, Dario Zappa, Valentin-Adrian Maraloiu, Elisabetta Comini
Summary: The study proposes an inverse design by depositing n-type ZnO shell layers on the surface of p-type CuO core-shell nanowires to understand their conductometric gas-sensing kinetics. The surface morphologies of bare and core-shell nanowires were investigated using FE-SEM. The ZnO shell layer was observed using EDX and HRTEM techniques. The deposition of ZnO shell layers switched the intrinsic p-type sensing behavior of CuO nanowires towards hydrogen to n-type.
Article
Chemistry, Physical
Naif Ahmed Alshehri, Abdulaziz K. Assaifan, Ayed A. Albalawi, Eman H. Alghamdi, Y. Niu, C. Pleydell-Pearce, Theodore Pavloudis, Joseph Kioseoglou, Mohammed Alsawat, T. T. G. Maffeis
Summary: This study successfully fabricated a scalable and reproducible ZnO@TiO2 heterostructure using a simple wet chemical method, investigated the impact of reaction parameters on the structure, and discovered the improvement in optical properties through photonic annealing.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
B. Pathak, P. K. Kalita, Ngangom Aomoa, J. P. Roy Choudhury, Hirendra Das
Summary: PbO/ZnO core/shell nanocomposites dispersed in PVP were synthesized, and their structural, optical, and electrical properties were characterized. The shell thickness was found to affect the material properties, with the core-shell structure altering the band gap and PL intensity, as well as increasing the conductivity and refractive index. The electrical mechanism was found to be of Richardson-Schottky type. The analysis of the I-V characteristics revealed the mem-capacitive nature of the material. The pinching voltage and current increased linearly with the increase of shell thickness.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Nanoscience & Nanotechnology
Yong-Lie Sun, Xiang-Dong Zheng, Wipakorn Jevasuwan, Naoki Fukata
Summary: The morphology, crystallinity, and internal stress of ZnO/Ge core-shell nanowires were investigated with different shell growth time and temperature. Ge nanotubes were fabricated and stress relaxation in Ge was achieved after removing the ZnO core using the wet-etching method.
Article
Chemistry, Analytical
Zhidong Ye, Rui Miao, Fengjuan Miao, Bairui Tao, Yu Zang, Paul K. Chu
Summary: Transition metal oxides, such as Co3O4 nanowire arrays and ultrathin and porous ZnO nanoflake films, are used to create a composite electrode with excellent electrochemical properties. The ZnO@Co3O4 heterojunction exhibits high sensitivity and a wide linear range for glucose detection, as well as promising performance in supercapacitors with high specific capacitance and long cycling stability. These findings suggest the potential of the ZnO@Co3O4 structure as multi-functional materials in electrochemical sensing and energy storage applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Cheng-Liang Hsu, En-Cheng Chang, Han-Ting Hsueh, Yi-Hung Liu
Summary: The study successfully synthesized n-ZnO/p-CuMnO2 core-shell nanowires by solution method, exhibiting good rectification and ultra-low leakage properties, as well as sensitivity and rapid response to organic gases and light of different wavelengths.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Indrajit V. Bagal, Pratik Mane, Maheshwari Arunachalam, Hyojung Bae, Mandar A. Kulkarni, Fawad Tariq, Soon Hyung Kang, Jun-Seok Ha, Sang-Wan Ryu
Summary: By constructing a type-II heterostructure of N-doped ZnO nanowires with an ultra-thin ZnS layer, a core-shell structure is formed which can accelerate the charge transfer process and significantly enhance the resistance to photo-corrosion of N-doped ZnO NWs. The optimal ZnS/N:ZnO core-shell nanowires exhibited a photocurrent density of 0.85 mA cm(-2) at 1.23 Vs RHE, which was 3-fold higher than ZnO nanowires. The reported approach provides possibilities for the construction of efficient and highly stable PEC water-splitting devices.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Lei Zhang, Baoyan Liang, He Zhao, Jiabin Yang, Mingshuai Jiao, Yunlong Liu
Summary: A core-shell structure homogeneous junction ZnO photocatalyst was prepared by calcination of Zn2(OH)2CO3 and zinc-based metal-organic framework (Zn-MOF) mixtures. The synthesized ZnO samples showed better UV light catalytic performance compared to commercially available nano-sized ZnO materials. However, the ZnO samples had poor visible-light photocatalytic performance. The presence of H2O2 accelerated the degradation of methylene blue (MB) solution in both cases.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Crystallography
Chonge Wang, Boubacar Drame, Lucien Niare, Fu Yuegang
Summary: This study provides a detailed numerical modeling of Cu2ZnSnS4 solar cells with ZnO/CdS core-shell nanowires of optimal dimensions, and explores the difference in performance between models with and without graphene.
Article
Materials Science, Multidisciplinary
Xichun Qu, Yingchun Fu, Zhiyong Duan, Mengke Li, Ying Hui Zhong, Liuhong Ma
Summary: Vertically aligned ZnO nanowire arrays were synthesized using a two-step hydrothermal method. The effects of growth conditions on the morphology of ZnO nanowires were systematically analyzed. The results showed that the seed solution concentration, growth solution concentration, doping concentration, and growth time all had certain effects on the morphology of ZnO nanowire arrays.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Physical
Jelena Zagorac, Dejan Zagorac, Vesna Srot, Marjan Randelovic, Milan Pejic, Peter A. van Aken, Branko Matovic, J. Christian Schoen
Summary: ZnO/ZnS core/shell nanostructures were synthesized and characterized using XRD, HR-(S)TEM, and analytical TEM (EDX and EELS), and their band-gap measurements were performed using UV/Vis DRS. The experimental results were combined with theoretical modeling and calculations to gain more insights into the properties of the nanoparticles. The synthesized materials showed a unique three-phase composition, with ZnO dominating the core region and ZnS occurring in two phases (wurtzite and sphalerite) in the shell region. The theoretical calculations demonstrated advanced semiconducting properties and the potential for band-gap tuning in ZnO/ZnS structures.
Article
Chemistry, Physical
Prerna Chauhan, S. Hasenohrl, A. Minj, M. P. Chauvat, P. Ruterana, J. Kuzmik
APPLIED SURFACE SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Stanislav Hasenohrl, Edmund Dobrocka, Roman Stoklas, Filip Gucmann, Alica Rosova, Jan Kuzmik
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2020)
Article
Chemistry, Physical
O. Pohorelec, M. Tapajna, D. Gregusova, F. Gucmann, S. Hasenohrl, S. Hascik, R. Stoklas, A. Seifertova, B. Pecz, L. Toth, J. Kuzmik
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Dusan Pudis, Petra Urbancova, Jozef Novak, Anton Kuzma, Ivana Lettrichova, Matej Goraus, Peter Elias, Agata Laurencikova, Daniel Jandura, Lubos Suslik, Stanislav Hasenohrl
Summary: The complex near-field analysis of GaP nanocones grown on GaP substrates demonstrated enhanced emission at the local level and emission enhancement with the use of Ag coating. These highly resolved analyses suggest potential applications of GaP nanocones in surface-enhanced Raman scattering substrates and other nanoscale electromagnetic wave amplification applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Michaela Sojkova, Edmund Dobrocka, Peter Hutar, Valeria Taskova, Lenka Pribusova Slusna, Roman Stoklas, Igor Pis, Federica Bondino, Frans Munnik, Martin Hulman
Summary: Few-layer PtSe2 films are promising candidates for high-speed electronics, spintronics, and photodetectors. The study found that growth temperature significantly influences the structural and electrical properties of the films. The best results were achieved for PtSe2 layers grown at 600 degrees Celsius, exhibiting long-range in-plane ordering.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Roman Stoklas, Ales Chvala, Peter Sichman, Stanislav Hasenohrl, Stefan Hascik, Juraj Priesol, Alexander Satka, Jan Kuzmik
Summary: Vertical current conduction in semi-insulating C-doped GaN grown on a GaN substrate was analyzed, showing different effects on electron conduction under varying C concentrations.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Physics, Applied
Iu V. Vetrova, M. Zelent, J. Soltys, V. A. Gubanov, A. Sadovnikov, T. Scepka, J. Derer, R. Stoklas, V Cambel, M. Mruczkiewicz
Summary: The stability of magnetic textures in multilayer patterned dots, particularly the skyrmion state, has been studied. By using Pt/Co/Au multilayer structures, skyrmions were stabilized in submicrometer dots, with the magnetic state evolving as the dot diameter increased. This nanopatterning technique could offer a versatile way of creating magnetic skyrmion states in multilayer magnetic films.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Filip Gucmann, Michal Kucera, Stanislav Hasenohrl, Peter Elias, Alica Rosova, Edmund Dobrocka, Roman Stoklas, Jan Kuzmik
Summary: In this study, the impact of pre-growth vicinal c-plane sapphire substrate nitridation on the electrical, optical, and structural properties of N-polar InN/InAlN heterostructures and the InN crystal habit was analyzed. It was found that the cool-down nitridation phase affected the quality of InAlN and InN layers, with a trade-off between electrical and optical properties observed. Different crystal habits of InN were observed depending on the nitridation cool-down time. The results suggest that N-polar buffer layers can produce high electron mobility InN layers, while metal-polar buffer layers may facilitate the growth of high crystal quality pyramidal InN with strong optical response.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Dagmar Gregusova, Edmund Dobrocka, Peter Elias, Roman Stoklas, Michal Blaho, Ondrej Pohorelec, Stefan Hascik, Michal Kucera, Robert Kudela
Summary: By using ELO technology, a 100 nm MOCVD-grown HEMT AlGaAs/InGaAs/GaAs heterostructure nanomembrane was successfully transferred from the GaAs growth substrate to a sapphire substrate, preserving the crystalline structure and quality of the nanomembrane. Various test results showed that the nanomembrane exhibited good performance without significant degradation.
Article
Nanoscience & Nanotechnology
J. Kuzmik, A. Adikimenakis, M. Tapajna, D. Gregusova, S. Hascik, E. Dobrocka, K. Tsagaraki, R. Stoklas, A. Georgakilas
Summary: The progress of information technologies is hindered by the limited operational speed and frequency of electronic devices. This study demonstrates InN as a promising material with the highest electron velocity for next-generation ultra-fast electronics, potentially filling the THz frequency gap between electronic and optical devices.
Article
Nanoscience & Nanotechnology
J. Novak, A. Laurencikova, P. Elias, S. Hasenoehrl, M. Sojkova, J. Kovac Jr, J. Kovac
Summary: We report on the properties of a GaP/MoS2 heterojunction prepared on a nanocone-structured GaP substrate and a planar GaP substrate. The experiment shows that the heterojunction formed on the nanocone-structured GaP substrate generates a higher photocurrent, consistent with theoretical assumptions.
Article
Chemistry, Multidisciplinary
Alica Rosova, Edmund Dobrocka, Peter Elias, Stanislav Hasenohrl, Michal Kucera, Filip Gucmann, Jan Kuzmik
Summary: In this study, (Ga)N epitaxial layers were successfully grown on sapphire substrates using organometallic chemical vapor deposition. The large pyramids, which were randomly distributed, were found to be grown above edge-type dislocations originating from the GaN buffer. These large pyramids exhibited good crystallinity and a small number of defects, making them potentially useful in various applications.
Article
Engineering, Electrical & Electronic
R. Stoklas, S. Hasenohrl, E. Dobrocka, F. Gucmann, J. Kuzmik
Summary: We conducted a comprehensive analysis of high-quality N-polar InN/In0.57Al0.43N heterostructures grown by MOCVD on on-axis c-plane sapphire substrate and off-axis c-plane sapphire substrate misoriented by 4 degrees toward the a-plane. Results showed a strong correlation between the structural quality of InN and the electron mobility, with higher density of edge-type dislocations, weaker temperature dependence of electron mobility, and higher electron concentration in InN grown at 550 degrees C compared with InN grown at 600 degrees C. The highest electron mobility of 714 cm(2)/Vs at room temperature was achieved in InN grown at 600 degrees C on the on-axis substrate with the lowest density of edge-type dislocations and the best surface morphology.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
