Article
Chemistry, Physical
Jincheng Yin, Xuebing Chen, Guanna Li, Dongxu Liu, Chun Li, Rengui Li, Bingxing Xie, Johannes H. Bitter, Jing Zhang
Summary: In this study, a charge transfer chain mimicking the electron transport chain in natural photosynthesis was designed and fabricated. The Bi12TiO20-Bi4Ti3O12/alpha-Bi2O3 composite showed superior photocatalytic activity for the degradation of environmental pollutants with high concentration, achieving 28 times higher degradation efficiency than α-Bi2O3.
Article
Chemistry, Multidisciplinary
Xuezhen Feng, Haiyuan Zou, Renji Zheng, Wenfei Wei, Ranhao Wang, Wensong Zou, Gukhyun Lim, Jihyun Hong, Lele Duan, Hong Chen
Summary: Heterostructure engineering plays a vital role in regulating the material interface, thus boosting the electron transportation pathway in advanced catalysis. This study synthesized a novel Bi2O3/BiO2 heterojunction catalyst and observed rich structural dynamics. The heterojunction catalyst exhibited high selectivity and performance in the electrocatalytic CO2 reduction reaction.
Article
Chemistry, Multidisciplinary
Yu-Hong Lai, Jun-Ding Zheng, Si-Cheng Lu, Yin-Kuo Wang, Chun-Gang Duan, Pu Yu, Yun-Zhe Zheng, Rong Huang, Li Chang, Ming-Wen Chu, Ju-Hung Hsu, Ying-Hao Chu
Summary: In condensed matter physics, oxide materials exhibit diverse and intriguing physical properties, making the development of functional oxides an important field of study. This research focuses on stabilizing PbSnO3 thin films with different orientations using a heteroepitaxial approach supported by theoretical calculations. Through X-ray diffraction and transmission electron microscopy, the structural information of the thin films is revealed. The electrical characterizations confirm the anticipated antiferroelectric behavior, including double hysteresis and butterfly loops. The study also investigates the phase transition and determines the transition temperatures based on temperature-dependent structural and electrical characterizations. Furthermore, scanning transmission electron microscopy provides atomic resolution images, revealing the microscopic antiferroelectric order. This work represents a significant breakthrough in synthesizing epitaxial PbSnO3 thin films and comprehensively understanding their anisotropic antiferroelectric behavior.
Article
Materials Science, Ceramics
Nadezhda E. Volkova, Konstantin S. Tolstov, Ludmila Ya. Gavrilova, Bernard Raveau, Antoine Maignan, Vladimir A. Cherepanov
Summary: The phase equilibria in the 1/2 Sm2O3-BaO-1/2 Fe2O3 system were systematically studied at 1100 degrees C in air, revealing the presence of two individual compounds and a more complex oxide under reduced oxygen partial pressure. The thermodynamic stability and thermal stability of these compounds were determined, and a subsolidus phase diagram for the system at 1100 degrees C in air was constructed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Jianmei Huang, Shengwen Zou, Jia Lin, Zhiwei Liu, Mingjing Qi
Summary: In this study, lead-free 2D halide double perovskite nanosheets were successfully synthesized, demonstrating excellent optoelectronic properties and providing guidance for the controllable synthesis of multi-component compounds.
Article
Chemistry, Multidisciplinary
Iana A. Minich, Oleg Silyukov, Sergei A. Kurnosenko, Veronika V. Gak, Vladimir D. Kalganov, Petr D. Kolonitskiy, Irina A. Zvereva
Summary: This study reports on the exfoliation and coating formation of inorganic-organic hybrids synthesized through intercalation reactions, with a focus on the influence of preliminary intercalation on exfoliation efficiency. The results were characterized using various analytical techniques, and the nanosheets obtained were coated on Si substrates for further study using atomic force and scanning electron microscopy.
Article
Polymer Science
Mohamadou Al Hassan, Mehdi Derradji, Mohsen M. M. Ali, Abdullah Rawashdeh, Jun Wang, Zhong-Cheng Pan, Wen-Bin Liu
Summary: Polybenzoxazine (BA-a) based nanocomposites with different amounts of Bi2O3 reinforcement were produced. The structures and properties of the nanocomposites were evaluated using various analytical techniques. An artificial neural network approach was used to predict the thermal degradation and flexural strengths of the nanocomposites. The results showed that increasing the Bi2O3 content improved the thermal stability and flexural strength of the nanocomposites. The prediction approach using the artificial neural network was found to be reliable and accurate.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jing Li, Jiao Xu, Yanan Bao, Jianliang Li, Hengshan Wang, Chengyu He, Meiqi An, Huayi Tang, Zhiguang Sun, Yurui Fang, Shuang Liang, Yiming Yang
Summary: This study investigates the ionic behavior in one-dimensional halide perovskites and finds that it is fundamentally different from three-dimensional systems. Anion exchange can drive phase transition and significantly lower the transition temperature in one-dimensional perovskite nanowires. The resulting heterojunction is epitaxial and its chemical composition can be controlled through postannealing.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhibo Zhao, Arun Kumar Jaiswal, Di Wang, Vanessa Wollersen, Zhengyu Xiao, Gajanan Pradhan, Federica Celegato, Paola Tiberto, Maria Szymczak, Juliusz Dabrowa, Moaz Waqar, Dirk Fuchs, Xiaoqing Pan, Horst Hahn, Robert Kruk, Abhishek Sarkar
Summary: High entropy oxides (HEOs) provide the possibility to explore new oxide compositions and properties by incorporating multiple-principal cations. This study demonstrates that epitaxial strain can selectively stabilize certain magneto-electronic states in HEOs. The coexistence of rocksalt and spinel-HEO phases in epitaxial (Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)(3)O-4 thin films is revealed, with changes in magnetic anisotropy and domain structure under different strain states.
Article
Chemistry, Multidisciplinary
R. Harada, Y. Kawahira, T. Ikeda, S. Maruyama, Y. Matsumoto
Summary: The phase stability of Aurivillius bismuth-layer structured Bi5Ti3FeO15 (BTFO15) was investigated in an epitaxial pillar-matrix nanocomposite system with spinel ferrites. Different super periodic structures of BTFOs appeared depending on the growth temperature, denoted by BTFO15 center dot nBiFeO(3) with continuous values of n between -0.5 and +1. The formation mechanism of such structures was discussed in terms of the ordering of Bi2O22+ layers in perovskite blocks, driven by Fe3+ transfer between BTFO15 and spinel ferrites during phase separation.
Article
Physics, Applied
Yosuke Hamasaki, Shintaro Yasui, Tsukasa Katayama, Takanori Kiguchi, Shinya Sawai, Mitsuru Itoh
Summary: The study investigated the phase stability, ferroelectricity, and magnetism of highly crystalline epitaxial epsilon-Fe2O3 films deposited on SrTiO3(111) substrates. The results showed the appearance of a secondary phase after annealing, and a clear saturated and opened polarization-electric field hysteresis loop at room temperature, as well as a magnetic phase transition at 155 K.
APPLIED PHYSICS LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Ziren Zhou, Hong Wei Qiao, Yu Hou, Hua Gui Yang, Shuang Yang
Summary: Metal halide perovskites are a class of semiconducting materials with superior optoelectronic properties that have achieved success in photoelectric device applications. Epitaxy has advanced perovskite technology by enabling material combinations with coherent interfacial lattice and complementary functionalities. Categorized epitaxial structures of perovskite solids and comparison of their performance in photoelectric devices can improve energy conversion processes.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Anna Mandziak, Miguel A. Aristu, Jose Emilio Prieto, Michael Foerster, Lucia Aballe, Juan de la Figuera
Summary: We investigated the response of magnetic domains in thin magnetite microstructures to weak external magnetic fields. The magnetic domains were observed using x-ray magnetic circular dichroism in photoemission electron microscopy, while applying external magnetic fields in different directions. The displacements of the Landau state vortex core under the applied magnetic field were quantified and compared with micromagnetic simulations. The results demonstrate the bulk-like magnetic properties of the nanometer-thick microstructures and their potential for technological applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Murat Balci, Mehmet Ari
Summary: Bi2O3-based solid solutions doped with rare earth oxides (Er2O3, Eu2O3, Gd2O3, and Ho2O3) were synthesized through solid state reactions at atmospheric conditions. Increasing the dopant concentration from 20% to 80%, the impact on phase structure and conductivity was studied. XRD patterns revealed that only samples A2 (10%Er: 10%Eu: 10%Gd: 05%Ho) and B1 (05%Er: 05%Eu: 05%Gd: 10%Ho) exhibited stabilized cubic delta-phase, indicating homogeneity. Heating analysis showed that sample A1 (05%Er: 05%Eu: 05%Gd: 05%Ho) underwent a phase transition from alpha-phase to delta-phase at approximately 729 degrees C, as evidenced by an endothermic peak in DTA curve. The conductivity graph of the same sample displayed a sudden increase in conductivity at that temperature value, confirming the phase transition. At 750 degrees C, sample A2 exhibited the highest conductivity (0.0144 S.cm-1) and the lowest activation energy (0.48 eV), while the grain sizes became increasingly non-uniform as dopant concentration increased based on FE-SEM images.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Can Tao, Fang Zhao, Zi-Wei Tang, Luxi Zhang, Qiang Niu, Gao Cao, Li-Min Zhao, Wenhuan Huang, Ping Zhao
Summary: Magnetic mesoporous ZrO2 nanoparticles blocked by bismuth oxide efficiently deliver chemotherapeutic agent daunomycin to targeted tumor cells, enhancing anti-cancer effect through chemo/ionic synergistic effects. The drug-loaded DDS can arrest cell cycle at G0/G1 phase, induce apoptosis of cancer cells, showing potential as a pH-sensitive DDS for treating various cancers.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Physics, Applied
J. M. Gregg
Summary: This article briefly summarizes the current understanding of electrically conducting domain walls. Despite the limitations of traditional two-probe source and drain measurements, insights into the underlying causes of enhanced current transport have been developed, opening up unique possibilities for conducting domain walls in future agile electronics.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Qing Yao, Zhiyong Yu, Ying-Hao Chu, Yu-Hong Lai, Ting-Shan Chan, Yong Xu, Qi Shao, Xiaoqing Huang
Summary: This study demonstrates that incorporating S into RuCuO nanorings (NRs) can significantly enhance the performance of acidic oxygen evolution reaction (OER). The optimized catalyst (S-H-RuCuO NRs) exhibits superior OER performance and enhanced stability, highlighting a potential strategy for designing active and stable RuO2-based electrocatalysts for acidic OER.
Article
Nanoscience & Nanotechnology
Chun-Hao Ma, Yi-Kai Liao, Yunzhe Zheng, Shihao Zhuang, Si-Cheng Lu, Pao-Wen Shao, Jia-Wei Chen, Yu-Hong Lai, Pu Yu, Jia-Mian Hu, Rong Huang, Ying-Hao Chu
Summary: This study demonstrates a novel solid solution system by combining antiferroelectric and ferroelectric materials, which can achieve transitions from relaxor ferroelectric phase to ferroelectric phase and then to antiferroelectric phase without the initial ferroelectric material. It provides a new approach for designing energy storage materials and other applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Physical
Bo-Chao Huang, Chun-Chih Hsu, Ying-Hao Chu, Ya-Ping Chiu
Summary: Complex oxides, oxide heterointerfaces, and layered cuprates show rich functionalities and diverse electronic structures, which can be tuned through precise growth techniques.
PROGRESS IN SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Jesi R. Maguire, Hamza Waseem, Raymond G. P. McQuaid, Amit Kumar, J. Marty Gregg, Charlotte Cochard
Summary: Charge gradient microscopy (CGM) is a scanning probe imaging mode well-suited for characterizing ferroelectrics. By comparing information from CGM and Kelvin probe force microscopy, it is shown that CGM reasonably reflects the spatial derivative of the measured surface potential. It is suggested that CGM in ferroelectrics may be more accurately called potential gradient microscopy.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Conor J. McCluskey, Matthew G. Colbear, James P. McConville, Shane J. McCartan, Jesi R. Maguire, Michele Conroy, Kalani Moore, Alan Harvey, Felix Trier, Ursel Bangert, Alexei Gruverman, Manuel Bibes, Amit Kumar, Raymond G. P. McQuaid, J. Marty Gregg
Summary: Recent research has revealed the presence of magnetoresistance in domain walls, providing insight into the conduction properties of homointerfaces.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yu-Hong Lai, Pao -Wen Shao, Chang-Yang Kuo, Cheng-En Liu, Zhiwei Hu, Chen Luo, Kai Chen, Florin Radu, Yong-Jyun Wang, Junding Zheng, Chungang Duan, Chun-Fu Chang, Li Chang, Yi-Chun Chen, Sang-Wook Cheong, Ying-Hao Chu
Summary: This study investigates the modulation of magnetic and electric orders in magnetoelectric materials through quasi-static mechanical strain. It is found that mechanical bending can significantly enhance the magnetization of Cr2O3 film and adjust its electric polarization and magnetoelectric coupling. This work provides a comprehensive understanding of the relationship between strain and magnetic and electrical behaviors and opens new possibilities for combining magnetoelectric materials with flexible substrates.
Article
Multidisciplinary Sciences
Pao-Wen Shao, Yi-Xian Wu, Wei-Han Chen, Mojue Zhang, Minyi Dai, Yen-Chien Kuo, Shang-Hsien Hsieh, Yi-Cheng Tang, Po-Liang Liu, Pu Yu, Yuang Chen, Rong Huang, Chia-Hao Chen, Ju-Hung Hsu, Yi-Chun Chen, Jia-Mian Hu, Ying-Hao Chu
Summary: Authors have discovered tuneable self-assembled nanostructures in the SnO2:NiO system, which extends the design of self-assembled oxides for practical applications in optoelectronics. Self-assembled systems have recently attracted attention for their ability to display a wide range of phase morphologies in nanocomposites. By controlling their concentration, researchers have created tunable self-assembled nanostructures, confirmed through TEM-energy-dispersive X-ray spectroscopy. Phase-field simulations have been used to understand 3D microstructure formation and predict microstructure morphologies in SnO2:NiO nanocomposites of other concentrations. Additionally, significantly enhanced photovoltaic properties have been demonstrated in a bicontinuous SnO2:NiO nanocomposite.
NATURE COMMUNICATIONS
(2023)
Correction
Multidisciplinary Sciences
Pao-Wen Shao, Yi-Xian Wu, Wei-Han Chen, Mojue Zhang, Minyi Dai, Yen-Chien Kuo, Shang-Hsien Hsieh, Yi-Cheng Tang, Po-Liang Liu, Pu Yu, Yuang Chen, Rong Huang, Chia-Hao Chen, Ju-Hung Hsu, Yi-Chun Chen, Jia-Mian Hu, Ying-Hao Chu
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Nhu Quynh Diep, Yu Xun Chen, Duc Loc Nguyen, My Ngoc Duong, Ssu Kuan Wu, Cheng Wei Liu, Hua Chiang Wen, Wu Ching Chou, Jenh Yih Juang, Yao Jane Hsu, Van Qui Le, Ying Hao Chu, Sa Hoang Huynh
Summary: This work reports the molecular beam epitaxy (MBE) of two-dimensional (2D) GaSe1-xTex ternary alloys, which have attracted a lot of interest in physics for prospective electronics and optoelectronics. The majority of hexagonal-GaSe1-xTex phase can be guaranteed on a GaN/sapphire platform without a visible sign of phase transition under specific growth conditions. The photoresponse performance of the hexagonal ternary alloy has greatly enhanced compared to the h-GaSe binary.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Weigao Han, Shilin Wu, Fang Dong, Weiliang Han, Yinghao Chu, Linghui Su, Zhicheng Tang
Summary: In this study, 3-dimensional ordered macroporous and mesoporous SiO2 was used as a nanoreactor to protect active sites from SO2 erosion in the catalytic combustion of benzene. Co3O4 nanoparticles were successfully confined in the macroporous and mesoporous channels, showing superior sulfur and water resistance. DFT calculations confirmed the high SO2 adsorption energy of the Co-Si catalyst and the low SO2 adsorption energy of the SiO2 nanoreactor, indicating their effectiveness in protecting active sites from SO2 erosion.
Correction
Chemistry, Physical
Yuan Zhang, Yi Zhang, Quan Guo, Xiangli Zhong, Yinghao Chu, Haidong Lu, Gaokuo Zhong, Jie Jiang, Congbing Tan, Min Liao, Zhihui Lu, Dongwen Zhang, Jinbin Wang, Jianmin Yuan, Yichun Zhou
NPJ COMPUTATIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yong-Jyun Wang, Jia-Wei Chen, Yu-Hong Lai, Pao-Wen Shao, Yugandhar Bitla, Yi-Chun Chen, Ying-Hao Chu
Summary: In this study, a flexible magnetoelectric (ME) heterostructure based on CoFe2O4/Pb(Zr,Ti)O-3 composite thin film on muscovite is presented, with two geometries of the constituents adopted for comparison. The impact of flexibility on ME properties is discussed, and the ME response sustains for 10,000 times bending without significant decrease, validating the mechanical durability of this heterostructure on muscovite. A flexible proximity sensor based on this heterostructure is demonstrated for motion detection, showing potential for future practical applications.
NPJ FLEXIBLE ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
P. -C. Chiang, S. C. Lin, C. -Y. Chiang, C. -S. Ku, S. W. Huang, J. M. Lee, Y. -D. Chuang, H. J. Lin, Y. F. Liao, C-M. Cheng, S. C. Haw, J. M. Chen, Y. -H. Chu, T. H. Do, C. -W. Luo, J. -Y. Juang, K. H. Wu, Y. -W. Chang, J. -C. Yang, J. -Y. Lin
Summary: Recent studies have shown that quasi-two-dimensional (quasi-2D) systems with atomic monolayer or few-layer architecture exhibit unprecedented physical properties that challenge conventional theories in condensed matter physics. In this study, it was found that the infinite layer SrCuO2 (SCO) can exhibit an unexpected metallic state when grown on SrTiO3 substrates. This metallic state does not conform to the traditional Landau's Fermi liquid paradigm. Furthermore, it was discovered that the hole doping in SCO does not occur at the interfaces between SCO and STO, but rather from transient layers within the SCO slab.
Article
Engineering, Electrical & Electronic
Tun-Hao Chen, Hao-Jen Chen, Ching-Yu Weng, Feng-Rong Chen, De-Shiang Liou, Sun-Zen Chen, Ying-Hao Chu, Jwo-Huei Jou
Summary: Candlelight-style, blue hazard-free light sources have long been desired to minimize the negative effects of blue emission. Flexible and transparent mica substrates offer a solution, as demonstrated by the fabrication of an organic LED on mica with high flexibility and lifetime approaching that on glass. The use of mica as a candidate material for flexible transparent devices provides opportunities for omnifriendly lighting applications with greater design flexibility.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
