Article
Chemistry, Multidisciplinary
Tauno Kahro, Kristina Raudonen, Joonas Merisalu, Aivar Tarre, Peeter Ritslaid, Aarne Kasikov, Taivo Jogiaas, Tanel Kaambre, Markus Otsus, Jekaterina Kozlova, Harry Alles, Aile Tamm, Kaupo Kukli
Summary: In this study, SiO2 films were grown to thicknesses below 15 nm using ozone-assisted atomic layer deposition, and continuous HfO2 or SiO2 films were deposited on graphene layer as conductive layer. Graphene layer was used as resistive switching media and improved endurance characteristics of the devices.
Article
Chemistry, Multidisciplinary
Gianluca Milano, Michael Luebben, Marco Laurenti, Luca Boarino, Carlo Ricciardi, Ilia Valov
Summary: This study investigates the effect of moisture on the resistive switching performances of ZnO-based electrochemical metallization memory cells, and found that water molecules can influence the resistive switching parameters by affecting the electronic conduction mechanism. The presence of moisture, particularly in sputtered films, leads to a decrease in the forming and SET voltages and an increase in the ON/OFF resistance ratio.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Physical
F. L. Faita, L. B. Avila, J. P. B. Silva, M. H. Boratto, C. C. Pla Cid, C. F. O. Graeff, M. J. M. Gomes, C. K. Mueller, A. A. Pasa
Summary: A uniform and stable Prussian White layer was successfully deposited on Au/Cr/Si substrates by electrodeposition, exhibiting an interesting resistive switching effect with ionic conduction possibly attributed to potassium ions at the grain boundaries. The abnormal resistive switching behavior was stable after 500 cycles, and the high and low resistive states remained stable for up to 1000 seconds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Nanoscience & Nanotechnology
Hui-Chuan Liu, Si-Ming Zeng, Rui Li, Yan-Ping Jiang, Qiu-Xiang Liu, Xin-Gui Tang
Summary: The study demonstrated bipolar resistive switching and ferroelectricities of Ni0.5Zn0.5Fe2O4 (NZFO) thin films using Au/NZFO/LNO/Si structure. It was found that annealing atmosphere influences the structure and properties of NZFO, with oxygen vacancy and strain stress playing a significant role. The saturation magnetization and remnant polarization values of the samples were affected by the annealing atmosphere, with improved resistive switching property observed in NZFO annealed in nitrogen atmosphere.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Chemistry, Physical
M. G. A. Ranieri, P. P. Ortega, H. Moreno, M. A. Ramirez, E. C. Aguiar, A. Z. Simoes
Summary: This study investigates the resistive switching behavior and magnetoelectric coupling in La0.5Pr0.5FeO3 thin films prepared by the polymeric precursor method. Results show significant values of dielectric constant with increasing temperature, indicating ferroelectric ordering. The introduction of praseodymium in La sites leads to slightly ferromagnetic behavior and the presence of resistive switching and magnetoelectric coupling phenomena in the thin films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
A. S. Farid, N. A. Hegab, E. Abd El-Wahabb
Summary: The DC conductivity and switching phenomenon of Se-36 Sb31Cu33 non-ordered material were studied at various temperatures below the corresponding glass transition temperature T-g. The study found that the conduction activation energy had dual values, the switching phenomenon exhibited memory behavior, and the mean value of the threshold voltage V-th varied with film thickness and temperature. The results were in agreement with the thermal model for the switching process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Tauno Kahro, Aivar Tarre, Tanel Kaambre, Helle-Mai Piirsoo, Jekaterina Kozlova, Peeter Ritslaid, Aarne Kasikov, Taivo Jogiaas, Guillermo Vinuesa, Salvador Duenas, Helena Castan, Aile Tamm, Kaupo Kukli
Summary: Thin HfO2 films were grown on large-area graphene by atomic layer deposition, and the resistive switching characteristics were modified in the graphene-HfO2 stacks. Surface pretreatments of the Si/TiN/HfO2 substrates were studied to improve graphene transfer.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Juan Ignacio Diaz Schneider, Paula Cecilia Angelome, Leticia Paula Granja, Cynthia Paula Quinteros, Pablo Eduardo Levy, Eduardo David Martinez
Summary: This paper investigates the resistive switching phenomena in percolative networks of silver nanowires coated with a thin layer of polyvinylpyrrolidone. The system exhibits different conductance levels and resistance state transitions under different environmental conditions, which is significant for the development of AgNWs-based electronics and in-hardware neuromorphic computing.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Physics, Multidisciplinary
Ying Yang, Yuelin Zhang, Liang Yang, Jingdi Lu, Gongxun Deng, Yinshu Wang, Hui Zhu, Aiji Wang
Summary: This study demonstrates the three-state resistive switching (RS) phenomenon on a Pt/BiFeO3/SrRuO3 structure. The three-state storage capability is attributed to the movement of oxygen vacancies and the trapping/detrapping of charge carriers at the interface. Additionally, a ternary OR logic gate is designed using only one memristor.
Article
Nanoscience & Nanotechnology
Kai Sun, Ming Lei, Lei Yuan, Bo Peng, Miao Yu, Xin-ming Xie, Yu-ming Zhang, Ren-xu Jia
Summary: In this paper, two sandwich structures of Ga2O3-based RRAMs were studied to understand the microscopic-level resistive switching behavior. The results showed that the oxygenation process during magnetron sputtering affected the crystallization orientation of Ga2O3 thin films. The crystalline orientation significantly affected the performance of Ga2O3-based RRAMs and provided new insights into the oxygen vacancy migration paths and associated migration energy barriers of hybrid Ga2O3 thin films.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Physics, Applied
Pradeep Kumar, Davinder Kaur
Summary: This research focuses on the fabrication of multifunctional flexible electronics for wearable data storage and communication devices. The study demonstrates a resistive random access memory (RAM) constructed using a magnetoelectric heterostructure consisting of piezoelectric and ferromagnetic materials. The RAM shows excellent endurance, data retention capability, and resistance switching behavior. The researchers also investigate the influence of temperature and magnetic field on the RAM's resistance states, showcasing the device's multifunctionality.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Meng-Hung Tsai, Chia-Jung Shih, Che-Wei Chang, Yu-Tseng Chu, You-Shen Wu, Cheng-Liang Huang
Summary: In this work, we propose that the band gap of amorphous Nb2O5 thin films can be narrowed, and this concept is validated by fabricating amorphous Nb2O5 based resistive random-access memory devices. The effects of Mn dopants and temperature on the conduction mechanism of the Nb2O5-based devices are investigated, and it is demonstrated that oxygen vacancies dominate the conduction mechanism of Mn-doped Nb2O5-based devices. X-ray photoelectron spectroscopy analysis reveals that the addition of Mn promotes the oxidation of Nb, offering significant benefits for improving the performance of RRAM memory.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Mahesh Saini, Mohit Kumar, Rupam Mandal, Anirban Mitra, Tapobrata Som
Summary: This study investigates optical wavelength controlled forming-free, multilevel resistive switching in visible light active 2 wt% Cu-doped ZnO thin films. By using wavelength-specific visible light in conjunction with applied voltage, the bipolar switching behavior can be modulated. The findings suggest that controlling light wavelength can offer an extra control parameter in conventional memristor devices for better cybersecurity and provides new insights for designing visible light-controlled electrically-driven memristive devices.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zhi Yun Yue, Zhi Dong Zhang, Zhan Jie Wang
Summary: This study achieved high resistive switching effect in ferroelectric memristors by embedding appropriate concentrations of Au nanoparticles in Pb(Zr0.40Ti0.60)O3 films. The addition of Au nanoparticles improved leakage current and maintained ferroelectric polarization. The resistive switching on/off ratio reached 10^6 with 3 mol% Au nanoparticles, improving the resistance-variable switching ratio by two orders of magnitude compared to pure PCZT films. Multi-level data storage was also achieved under different bias voltages.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Artem I. Ivanov, Victor Ya Prinz, Irina Antonova, Anton K. Gutakovskii
Summary: By encapsulating individual vanadium oxide crystal-hydrate nanoparticles in fluorinated graphene, researchers have achieved bipolar resistive switching with a switching voltage of 2-4V. This study provides valuable insights for the development of bipolar nanoswitches.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Yeong-Maw Hwang, Cheng-Tang Pan, Bo-Syun Chen, Sheng-Rui Jian
Summary: Three-dimensional simulations of the ultrasonic vibration bonding process of micro-copper blocks were conducted using the finite element method, showing successful bonding at room temperature and the formation of solid solution characteristics at higher frequencies.
Article
Chemistry, Multidisciplinary
Yu-Chin Tseng, Chih-Ming Lin, Sheng-Rui Jian, Phuoc Huu Le, Marin M. Gospodinov, Vera Marinova, Dimitre Z. Dimitrov, Chih-Wei Luo, Kuang-Hsiung Wu, Dong-Zhou Zhang, Jenh-Yih Juang
Summary: The evolution of Bi2Se2.1Te0.9 driven by external pressure revealed new crystal structures appearing sequentially, with electronic and structural properties influenced by the alloying of Bi2Se3 with Bi2Te3.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Chih-Ming Lin, Sin-Cheng Lin, Yu-Chin Tseng, Tony Huang, Huan-Hsuan Kung, Yu-Chun Chuang, Yen-Fa Liao, Bi-Ru Wu, Sheng-Rui Jian, Jenh-Yih Juang
Summary: The study revealed that under pressure, zinc-doped indium phosphide undergoes phase transitions from zinc-blende to rock-salt structure with metallization, while additional Raman shifts of Zn local vibrational modes appear. The pressure-induced phase transitions in zinc-doped indium phosphide are found to be influenced by the type of defects introduced into the lattice upon doping.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Hou-Guang Chen, Yung-Hui Shih, Huei-Sen Wang, Sheng-Rui Jian, Tzu-Yi Yang, Shu-Chien Chuang
Summary: In this article, the van der Waals epitaxial growth of ZnO layers on mica substrates is demonstrated through a low-temperature hydrothermal process. The addition of sodium citrate into the growth solution significantly promotes the lateral growth of ZnO crystallites, resulting in coalesced and continuous epitaxial layers. The combination of Mist-CVD process further improves the epitaxial quality and surface morphology of the hydrothermally grown ZnO layers.
Article
Engineering, Multidisciplinary
Yi-Jui Chiu, Bi Li, Sheng-Rui Jian, Shui-Yang Lien, Ji-Ming Yi
Summary: This paper improves the theoretical model of photovoltaic power generation based on experimental data to enhance the prediction accuracy. The influence of photovoltaic module characteristics and local shading on power generation efficiency is analyzed through MATLAB simulations. Furthermore, an improved PSO algorithm is proposed to solve the maximum power point tracking problem under local shading, achieving faster power tracking and improved stability compared to existing algorithms.
JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
(2022)
Article
Materials Science, Multidisciplinary
Kuo-Jung Lee, Ming-Husan Lee, Yung-Hui Shih, Chao-Ping Wang, Hsun-Yu Lin, Sheng-Rui Jian
Summary: This study focuses on the fabrication of carbon nanotube buckypaper composite films using pumping filtration and spin coating methods. The addition of surface modifiers improves the hydrophilic properties of the buckypaper and enhances its bonding with aqueous bovine serum albumin (BSA). The contact angles of the modified specimens are smaller than the unmodified specimen, indicating the improved hydrophilicity of the modified samples.
Article
Materials Science, Multidisciplinary
Hui-Ping Cheng, Phuoc Huu Le, Le Thi Cam Tuyen, Sheng-Rui Jian, Yu-Chen Chung, I-Ju Teng, Chih-Ming Lin, Jenh-Yih Juang
Summary: The correlations among microstructure, surface morphology, hardness, and elastic modulus of Bi2Te3 thin films deposited on c-plane sapphire substrates by pulsed laser deposition are investigated. The results show that the crystallinity of the films can be improved by increasing the substrate temperature. The hardness and elastic modulus of the films decrease with increasing crystallite size, and the grain boundary plays an important role in the deformation characteristics of the films.
Article
Materials Science, Multidisciplinary
Shu-Wei Cheng, Bo-Syun Chen, Sheng-Rui Jian, Yu-Min Hu, Phuoc Huu Le, Le Thi Cam Tuyen, Jyh-Wei Lee, Jenh-Yih Juang
Summary: In this study, the nanoindentation responses of Bi2Se3 thin film were quantitatively analyzed and simulated using the finite element method (FEM). The study also investigated the geometric shape dependency of nanoindentation-induced stress distribution at the film/substrate interface.
Article
Chemistry, Analytical
Guo-Ju Chen, Chih-Ming Lin, Yung-Hui Shih, Sheng-Rui Jian
Summary: The influence of substrate temperature on the structural, surface morphological, optical, and nanomechanical properties of NiO films deposited through radio-frequency magnetron sputtering on glass substrates was investigated. Results showed that the substrate temperature significantly affected the grain texturing, surface morphology, transmittance, optical band gap, hardness, Young's modulus, and wettability of the films.
Article
Materials Science, Multidisciplinary
Ngo Ngoc Uyen, Le Thi Cam Tuyen, Le Trung Hieu, Thi Thu Tram Nguyen, Huynh Phuong Thao, Tho Chau Minh Vinh Do, Kien Trung Nguyen, Nguyen Thi Nhat Hang, Sheng-Rui Jian, Ly Anh Tu, Phuoc Huu Le, Chih-Wei Luo
Summary: In this study, TiO2 nanowires on TiO2 nanotubes arrays and Au-decorated nanostructures were designed for photoelectrochemical water splitting. Among them, Au NPs-NRs-TNWs/TNAs exhibited the highest photocurrent density and photocatalytic activity in the degradation of methylene blue.
Article
Chemistry, Analytical
Chih-Sheng Gao, Sheng-Rui Jian, Phuoc Huu Le, Wu-Ching Chou, Jenh-Yih Juang, Huang-Wei Chang, Chih-Ming Lin
Summary: In this study, samarium-doped BiFeO3 thin films were grown using pulsed laser deposition and their microstructures and nanomechanical properties were investigated. The results showed that the oxygen partial pressure influenced the surface morphology and crystallite size of the films. Additionally, the hardness of the films followed the Hall-Petch equation.
Article
Materials Science, Multidisciplinary
Hou-Guang Chen, Huei-Sen Wang, Sheng-Rui Jian, Tung-Lun Yeh, Jing-Yi Feng
Summary: This study demonstrates the successful epitaxial growth of single-phase (111) CoO and (111) Co3O4 thin films on a-plane sapphire substrates using mist-CVD process. The phase structure of the cobalt oxide films is controlled by the growth temperature and process ambient. The electrical properties of the Co3O4 films are greatly improved after thermal annealing in oxygen ambient.
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)