Article
Engineering, Electrical & Electronic
Kaixuan Li, Yue Peng, Wenwu Xiao, Fenning Liu, Yueyuan Zhang, Ze Feng, Hong Dong, Yan Liu, Yue Hao, Genquan Han
Summary: In this article, the effect of starting layer on the ferroelectric properties and reliability of HfO2-ZrO2-HfO2 (HZH) and ZrO2-HfO2-ZrO2 (ZHZ) superlattice (SL) films were systematically studied. The HZH device achieved a higher value of remnant polarization (Pr) compared to the ZHZ device. However, the ZHZ structure exhibited better wake-up performance, frequency stability, inversion speed, and endurance cycles. Therefore, a hybrid model involving ferroelectric (FE) polarization and interfacial ion migration is proposed. This study is valuable for understanding and optimizing HfO2-based ferroelectric films for non-volatile memory applications.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Materials Science, Multidisciplinary
Min Ju Yun, Doowon Lee, Sungho Kim, Christian Wenger, Hee-Dong Kim
Summary: This study reports the formation of free/self-rectifying resistive switching characteristics in a crystalline HfO2-based resistive switching memory device, which exhibits resistive switching behaviors without the need for a forming process. Additionally, the resistive switching performance is improved when using a top electrode with a lower work function.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Chandreswar Mahata, Muhammad Ismail, Dae Hwan Kim, Sungjun Kim
Summary: The reliable resistive switching performance of nanocrystalline-HfO2 in amorphous-HfOx has been demonstrated in the TaN/nc-HfO2/ITO memristor structure. The presence of nc-HfO2 and non-stoichiometric HfOx in the switching layer was confirmed using TEM and XPS. The narrowing of conductive filaments in an atomic scale under the influence of nc-HfO2 allows for the control of quantized conductance. Different current compliance and RESET stop voltages were found to enhance the resistive switching performances with multilevel resistance states behavior.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Zhen-Hai Li, Jian-Chang Li, Hai-Peng Cui
Summary: The HfO2/NiO nanocomposite films were fabricated using a sol-gel spin-coating method to investigate the bending effect on resistive switching of p-n heterojunctions, showing reliable bipolar switching performance with a decrease in on/off ratio after bending. Finite element studies identified channel cracks and delamination as main fatigue damage sources, affecting the resistance switching. The different mechanical properties of NiO and HfO2 at the p-n interface may help restrain crack propagation and improve anti-bending properties. Numerical calculations indicated a drastic fatigue-life drop above a threshold stress of 300 Mpa due to interfacial delamination and increased crack spacing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Hojeong Ryu, Hoeje Jung, Kisong Lee, Sungjun Kim
Summary: This study characterizes the resistive switching and neuromorphic simulation of a Pt/HfO2/TaN stack as an artificial synaptic device, demonstrating stable bipolar resistive switching operation and reliability through endurance and retention tests. The conduction mechanisms of low-resistance and high-resistance states were verified, and practical set and reset processes were performed using pulses. Neuromorphic applications such as potentiation and depression were also demonstrated, along with a neural network simulation for pattern recognition accuracy on the Fashion Modified National Institute of Standards and Technology dataset.
Article
Chemistry, Multidisciplinary
Yuan-Dong Xu, Yan-Ping Jiang, Xin-Gui Tang, Qiu-Xiang Liu, Zhenhua Tang, Wen-Hua Li, Xiao-Bin Guo, Yi-Chun Zhou
Summary: In this study, a hafnium oxide-/aluminum-doped zinc oxide/hafnium oxide (HfO2/Al-ZnO/HfO2) tri-layer structure device was prepared using the sol-gel method. The device exhibited excellent resistive switching (RS) properties, including a high switch ratio, long retention time, and multi-level storage capability. Mechanism analysis revealed that the oxygen-rich vacancy concentration in the Al-ZnO layer can improve the formation and rupture behaviors of conductive filaments, thereby enhancing the RS performance of the device.
Article
Materials Science, Ceramics
Yue Peng, Zhe Wang, Wenwu Xiao, Yu Ma, Fenning Liu, Xinran Deng, Xiao Yu, Yan Liu, Genquan Han, Yue Hao
Summary: This study investigated the polarization switching speed of HfO2-ZrO2 (HZO) ferroelectric films with different thicknesses using TaN/HZO/TaN capacitors. The inhomogeneous field mechanism (IFM) model was employed to characterize the switching dynamics, revealing different characteristic time constants for HZO samples of varying thicknesses. The results provide insights into the local field distribution in capacitors with different HZO thicknesses and offer implications for the design and optimization of HZO films for advanced nanonode applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Alok Ranjan, Hejun Xu, Chaolun Wang, Joel Molina, Xing Wu, Hui Zhang, Litao Sun, Junhao Chu, Kin Leong Pey
Summary: In this study, the resistive switching in hafnium dioxide (HfO2) and aluminum oxide (Al2O3) bilayered stacks was investigated using in-situ transmission electron microscopy and X-ray energy dispersive spectroscopy. The change in conductance of the HfO2/Al2O3 stack during electrical stressing is attributed to the formation of extended nanoscale defects at the HfO2/Al2O3 interface and the migration and re-crystallization of Al into the oxide bulk. Two competing physical mechanisms, oxygen ion redistribution and Al species migration, were found to be involved in the switching process. The low diffusion barrier of the active Al electrode causes severe Al migration in the bilayered oxides, leading to device failure in resetting and limiting overall switching performance and material reliability.
APPLIED MATERIALS TODAY
(2023)
Article
Physics, Multidisciplinary
Aman Sharma, Mohd Faraz, Neeraj Khare
Summary: In this article, the synthesis of ZrO2 nanostructure and the fabrication of resistive switching device [FTO/ZrO2/Ag] using the hydrothermal and spray coating methods are reported. The results show that the fabricated device exhibits gradual set and reset at 0.8V and -0.7V, respectively, confirming the presence of analog switching. The conduction mechanism in high resistive state and low resistive state has been explored using an I-V fitting model.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Physics, Applied
Yudong Sun, Jing Wang, Dong He, Menghua Yang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: In this article, a memristive device with a Cu/HfO2/TiO2 nanowire array/FTO structure was fabricated using a hydrothermal method and atomic layer deposition. The devices exhibited good resistive switching properties, including low set voltages (around 1V), good retention (>10^4s), and multilevel storage. Compared to Cu/TiO2 NWA/FTO devices, Cu/HfO2/TiO2 NWA/FTO devices showed better uniformity, possibly due to the difference in dielectric constants between TiO2 and HfO2. Under consecutive voltage pulses, some synaptic functions were mimicked, including long-term potentiation/depression, paired-pulse facilitation, and spike timing dependent plasticity.
APPLIED PHYSICS LETTERS
(2023)
Article
Multidisciplinary Sciences
Sunwoo Lee, Jaeyoung Jeon, Kitae Eom, Chaehwa Jeong, Yongsoo Yang, Ji-Yong Park, Chang-Beom Eom, Hyungwoo Lee
Summary: In this study, a resistive switching device based on Pt/LaAlO3/SrTiO3 (Pt/LAO/STO) heterostructures is demonstrated, suitable for multi-level memristive applications. By redistributing surface oxygen vacancies, multiple and tunable conductance states (over 27) are achieved in a non-volatile manner. Additionally, the proposed variance-aware weight quantization (VAQ) method effectively reduces state overlap issues and improves computing accuracy.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Electrical & Electronic
Olga O. Permiakova, Alexander E. Rogozhin, Andrew V. Miakonkikh, Elizaveta A. Smirnova, Konstantin V. Rudenko
Summary: We claim that the CF evolution in BRS and CRS is similar in HfO2-based structures with one active layer. The observed difference in I-V characteristics is due to the presence of a non-Ohmic contact at the interface with the injection electrode, with a higher barrier in BRS. In order to study the transition between BRS and CRS in an asymmetric structure, we used a Pt/HfO2(2 nm)/HfOXNY (4 nm)/TiN structure.
MICROELECTRONIC ENGINEERING
(2023)
Article
Physics, Multidisciplinary
Tao Chen, Tao Zhang, Yuan-Xiang Yin, Yu-Sha Xie, Xiao-Yan Qiu
Summary: With the integration of portable computers and smartphones with Internet of Things technology, new-generation non-volatile memory devices require further miniaturization, high reading/writing speed, and big storage capacity. Resistive random access memory (RRAM) based on transition metal oxides, such as NiO and HfO2, shows promise due to its low power consumption, small footprint, fast switching speed, and multi-level storage capacity. The study investigates the microstructures, resistive switching characteristics, and conductive mechanisms of NiOx films deposited on Pt <111> layer and polycrystalline HfO2 film. The results demonstrate the potential applications of NiOx(200)/HfO2 stack in multilevel nonvolatile memory devices and brain-like neural synapses.
ACTA PHYSICA SINICA
(2023)
Article
Computer Science, Information Systems
Hector Garcia, Jonathan Boo, Guillermo Vinuesa, Oscar G. Ossorio, Benjamin Sahelices, Salvador Duenas, Helena Castan, Mireia B. Gonzalez, Francesca Campabadal
Summary: By investigating the behavior of HfO2-based resistive switching devices at low temperatures, it was found that a hopping conduction mechanism was obtained in the low resistance state, and the set and reset voltages increased as temperature decreased.
Article
Computer Science, Information Systems
Guillermo Vinuesa, Hector Garcia, Mireia B. Gonzalez, Kristjan Kalam, Miguel Zabala, Aivar Tarre, Kaupo Kukli, Aile Tamm, Francesca Campabadal, Juan Jimenez, Helena Castan, Salvador Duenas
Summary: This work observed the thickness-dependent resistive switching polarity in TiN/Ti/HfO2/Pt structures, and proposed a hypothesis on the change of polarity based on filament disruption at different interfaces.
Article
Materials Science, Ceramics
Yan Zhao, Qianqian Xu, Xuefan Zhou, Mingyang Yan, Hanyu Gong, Xi Yuan, Hang Luo, Kechao Zhou, Dou Zhang, Chris Bowen, Yan Zhang
Summary: This paper presents a comprehensive evaluation of the photo-piezo-catalytic properties of lead-free Ba0.85Ca0.15Zr0.1(Ti1-xCox)0.9(BCZT-xCo,x = 0-0.025) ferroelectric ceramics prepared through a solid-state process. By controlling the level of Co doping, the band gap was reduced to 2.40 eV at x = 0.02, leading to increased generation of photo-generated charges and enhanced photocatalytic activity. The combination of ultrasound and illumination on a solution containing BCZT-0.02Co particles resulted in a 99% degradation of Rhodamine B within 60 minutes, surpassing the degradation achieved by illumination or ultrasound alone. The study provides new insights into the catalytic mechanism and highlights the potential of Co substitution in these lead-free ferroelectric ceramics for photo-piezo-catalysis applications.
CERAMICS INTERNATIONAL
(2023)
Article
Computer Science, Artificial Intelligence
Taihao Han, Sai Akshay Ponduru, Arianit Reka, Jie Huang, Gaurav Sant, Aditya Kumar
Summary: The dissolution kinetics of tricalcium silicate (C3S) in undersaturated solvents can be accurately predicted using the deep forest (DF) model, which takes into account various variables such as measurement method, temperature, and physicochemical properties of solvents.
Article
Chemistry, Multidisciplinary
Shuyue Wu, Siyuan Lin, Zhiqiang Shi, De'en Guo, Han Huang, Xuefan Zhou, Dou Zhang, Kechao Zhou, Wenhao Zhang, Yue Hu, Conghua Zhou
Summary: Polyvinyl pyrrolidone (PVP) is doped into the growth process of halide perovskite, and it interacts with PbI2 and organic salt to inhibit their aggregation and crystallization. The doping of PVP leads to a decrease in crystallite size, surface fluctuation, and roughness, resulting in a compact and uniform perovskite film. The power conversion efficiency of perovskite solar cells is improved due to the confinement effect, which also enhances the thermal stability of the film and device.
Article
Chemistry, Physical
Qiong Liu, Faqi Zhan, Xiaogang Luo, Qiuyan Yi, Zhida Xiao, Di Zhai, Jingxiang Huang, Yan Zhang, Hang Luo, Dou Zhang, Chris R. Bowen
Summary: By combining experimental and modeling techniques, this paper reports on the unique potential of CaBi2Nb2O9 (CBN) platelets, which can couple both piezo- and photo- multi-field effects to overcome the challenges of traditional semiconductor photocatalysts and achieve high-efficiency hydrogen production and dye degradation.
Article
Nanoscience & Nanotechnology
Muhammad Habib, Xuefan Zhou, Lin Tang, Guoliang Xue, Attaur Rahman, Fazli Akram, Dou Zhang
Summary: A facile approach of donor doping strategy is adopted in this work to achieve a high Curie temperature (T-C) of 450 degrees C and outstanding piezoelectric coefficients (d(33)) of 422-436 pC N-1 using Yb3+, Y3+, Sm3+, and Nd3+ as dopants. The fabricated lead-free ceramics exhibit thermally-stable and outstanding piezoelectric strain performance with small strain hysteresis, making them highly desirable for sensor and actuator applications.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Haiyan Chen, Lei Liu, Zhongna Yan, Xi Yuan, Hang Luo, Dou Zhang
Summary: A novel supercapacitor, HAHx, is designed to improve the breakdown strength (Eb) by optimizing the Al2O3 film thickness. Low-temperature annealing enhances the polarization difference (P-m-P-r), resulting in large Eb and P-m-P-r values, as well as high efficiency and reliable endurance. This work provides a feasible pathway to improve the polarization difference and breakdown strength of HfO2-based films.
Article
Chemistry, Physical
Siyuan Lin, Shuyue Wu, De'en Guo, Han Huang, Xuefan Zhou, Dou Zhang, Kechao Zhou, Wenhao Zhang, Yue Hu, Yongli Gao, Conghua Zhou
Summary: Blending polyacrylic acid with organic salt can regulate the crystallization process and slow down the reaction rate between organic salt and PbI2, improving the crystallization of perovskite. The addition of polyacrylic acid increases the crystallite size and grain size of perovskite. By reducing trap density and charge recombination, the charge carrier lifetime in perovskite film and devices is prolonged, leading to an increase in power conversion efficiency of the device.
Article
Materials Science, Multidisciplinary
Mingyang Yan, Huimin Li, Shengwen Liu, Zhida Xiao, Xi Yuan, Di Zhai, Kechao Zhou, Chris R. Bowen, Yan Zhang, Dou Zhang
Summary: This study investigates the effect of BCZT NW content on the dielectric, ferroelectric, and piezoelectric properties of flexible PVDF-TrFE composite films. It was found that the composite film with 15 wt % BCZT NWs exhibited the highest energy harvesting figure of merit of 5.3 x 10(-12) m(2)/N. A patterned piezoelectric nanogenerator was fabricated using interdigitalelectrodes combined with the composite, which could produce an open-circuit output voltage of 17 V and a maximum output power density of 5.6 mu W/cm(2). This research provides opportunities for optimizing and fabricating piezoelectric materials for energy-harvesting and sensing applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Keitumetse Monyake, Taihao Han, Danish Ali, Lana Alagha, Aditya Kumar
Summary: The study used artificial neural network (ANN) and random forests (RF) machine learning models to predict the efficiency of synthesized chitosan-polyacrylamide copolymers (C-PAMs) in the depression of iron sulfide minerals while valuable base metal sulfides were floated in the froth flotation process. The RF model showed higher accuracy in predicting the depression of pyrite compared to the ANN model. Fundamental investigations on the surface chemistry of C-PAMs at the mineral-water interface were also conducted to gain insights into the behavior of different metal sulfides during flotation.
COLLOIDS AND INTERFACES
(2023)
Article
Construction & Building Technology
Taihao Han, Jie Huang, Gaurav Sant, Narayanan Neithalath, Ashutosh Goel, Aditya Kumar
Summary: This study develops an advanced model that utilizes artificial intelligence to accurately predict the hydration kinetics of [PC + SCM] binders, achieving high reliability.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Hong Yang, Lian-zhong Zhao, Yan Zhang, Hang Luo, Ri-chu Wang, Dou Zhang, Xiao-feng Wang
Summary: In this study, direct ink writing (DIW) was used to prepare polyvinylidene fluoride (PVDF) film. The rheological properties of inks were studied, and the influence of process parameters on material properties was investigated using various testing methods. The results showed that the PVDF film prepared with specific printing parameters had a significantly improved β-phase content compared to film prepared by solution casting. The high β-phase content enhanced the electrical properties and piezoelectric performance of the PVDF film, making it suitable for small deformation monitoring.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Geochemistry & Geophysics
Taihao Han, Bryan K. Aylas-Paredes, Jie Huang, Ashutosh Goel, Narayanan Neithalath, Aditya Kumar
Summary: This study explores the prediction of compressive strength in limestone calcined clay cement (LC3) using a machine learning model. Three feature reduction methods are employed to analyze the impact of LC3 components and mixture design on compressive strength. Practical guidelines for applying these methods on cementitious materials are provided, and a feature enhancement method is utilized to improve prediction accuracy.
Article
Chemistry, Physical
Siyuan Lin, Zhenxing Fang, Jiao Ma, De'en Guo, Xiaohan Yu, Haipeng Xie, Mei Fang, Dou Zhang, Kechao Zhou, Yongli Gao, Conghua Zhou
Summary: In this article, an in-situ healing strategy is proposed to strengthen the perovskite/carbon interface by doping octylammonium iodide into the carbon paste. This strategy accelerates charge extraction and reduces recombination, leading to an upgraded power conversion efficiency of perovskite solar cells.
Article
Materials Science, Multidisciplinary
Xiaogang Luo, Zhongna Yan, Hang Luo, Xuefan Zhou, Boyuan Li, Man Zhang, Dou Zhang
Summary: This study reports significantly improved piezoelectric properties and DC resistivity of CaBi2Nb2O9 ceramics through Na+ and Sm3+ co-doping. An optimum composition of Ca-0.95(Na, Sm)(0.025)Bi2Nb2O9 is obtained, which possesses a high Curie point, a high piezoelectric coefficient, and a low DC electrical resistivity at high temperatures. Furthermore, the piezoelectric coefficient maintains about 90% of the initial value after annealing at 900 degrees C for 2 h.
ADVANCED POWDER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuan Liu, Hang Luo, Fan Wang, Zhida Xiao, Chenchen Yang, Xiaona Li, Bo Peng, Yuting Wan, Jian Yin, Dou Zhang
Summary: Dielectric capacitors have great potential in pulse power devices due to their high power density. However, achieving both high discharge energy density and energy efficiency has been a challenge. In this study, a new all-organic multilayer composite with gradient transition layers was designed, resulting in a discharge energy density of 12.70 J cm(-3) and an energy efficiency of 74.6% at 510 kV mm(-1), which were significantly higher than those of other materials. The composite also exhibited excellent cycling stability and a fast charge-discharge rate.
JOURNAL OF MATERIALS CHEMISTRY C
(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)
