Article
Materials Science, Multidisciplinary
Y-M Kim, K. H. Lee, L. Fu, M-W Oh, S-H Yang, S. Ning, G. Han, M. Y. Kim, J-S Kim, M. Jeong, J. Jang, E. Lee, E. Okunishi, H. Sawada, S- Kim, S. J. Pennycook, Y. H. Lee, S. W. Kim
Summary: Using advanced X-ray spectroscopy, excess Cu doping behavior in ternary Bi2Te2.7Se0.3 bulk alloy is visualized with unprecedented detectability. The study sheds light on the influence of Cu dopants on the properties of materials, potentially impacting the understanding of quantum phenomena in doped nanomaterials and doped topological insulators.
MATERIALS TODAY PHYSICS
(2021)
Article
Astronomy & Astrophysics
William J. Henney
Summary: Raman scattering is utilized to map neutral gas in star-forming regions by analyzing broad Raman-scattered wings of hydrogen lines and absorption lines of neutral oxygen in far-ultraviolet resonance lines. This process allows accurate measurement of hydrogen density and easy differentiation of Raman scattering from other factors causing broad H alpha wings.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Spectroscopy
Hannah Carruthers, Don Clark, Fiona C. Clarke, Karen Faulds, Duncan Graham
Summary: Chemical mapping by Raman spectroscopy is commonly used in the pharmaceutical industry to analyze component distribution within tablets, but current methods are limited to examining the sample's exposed surface. Recent research has explored a combination of Raman spectroscopic mapping and serial sectioning as an alternative method to obtain depth profiles of samples, providing appropriate lateral and axial resolution through the use of independent sample sectioning alongside Raman mapping.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Physics, Multidisciplinary
Simone Benaglia, Manuel R. Uhlig, Jose Hernandez-Munoz, Enrique Chacon, Pedro Tarazona, Ricardo Garcia
Summary: This study demonstrates that the generation of 3D maps is dependent on the polarization of the tip, with differently charged tips revealing different density distributions. Experimental data reproduce key findings of the theory.
PHYSICAL REVIEW LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Wei Shao, Xiaodong Zhang
Summary: 2D materials have been extensively studied in electrocatalytic CO2 reduction, and atomic-level engineering strategies can enhance catalytic activity and selectivity.
Article
Chemistry, Physical
Rajagopalan Krishnan, Govind B. Nair, Samvit G. Menon, Lucas Erasmus, Hendrik C. Swart
Summary: A series of Tm2-xWO6:xEr(3+) phosphors were successfully synthesized by solid-state reaction method. The X-ray diffraction patterns confirmed the monoclinic crystalline structure of the as-synthesized materials. Increasing the doping concentration of Er3+ ions enhanced the upconversion luminescence intensity at 657 nm.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Qilong Sun, Miaojia Yuan, Zhenkui Zhang, Nicholas Kioussis
Summary: The advent of 2D magnetic materials expands the voltage-controlled magnetization-switching scheme, offering attractive prospects for designing future MeRAM. We propose using 2D ferromagnetic Fe2I2 to replace traditional magnetic thin films for energy-efficient MTJs with Ir capping layers. These multilayers exhibit both giant perpendicular magnetic anisotropy and voltage-controlled magnetic anisotropy, dependent on the Ir thickness and epitaxial strain effect. The spin reorientation and VCMA behavior are controlled by the biaxial strain, attributed to electric-field-induced modifications of the spin-orbit coupling energies of the spin-polarized Ir-d orbitals. These findings provide new approaches for controlling 2D magnetism and alternative strategies for nonvolatile and low-power spintronics and magnetic memory storage devices.
Article
Chemistry, Multidisciplinary
Anand Kumar Singh, Arun Kumar Singh, Sita Ram Prasad Sinha
Summary: Modulating the Fermi level of graphene through doping with nanoparticles to macromolecules induces a p-type doping effect and downward shift of the Fermi level, which is crucial for the development of high-performance flexible electronic devices.
Article
Polymer Science
Huifang Li, Weikun Chen, Xuefeng Liang, Xinyuan Tang, Yongze Zhao, Zehua Huang, Yan He, Zhiming Liu
Summary: Covalent organic frameworks (COFs) are a new class of two-dimensional functional materials with unique electronic characteristics. This study explores the use of organic molecular acceptors as dopants to tune the electronic character of COFs, specifically targeting their frontier orbital energy levels. The results show that surface doping with organic molecular acceptors effectively modulates the frontier energy levels of COFs, providing a reliable approach to optimize the performance of COF-based devices.
Article
Chemistry, Inorganic & Nuclear
Guang Chen, Wendong Nie, Jiaxing Zuo, Yan Li, Lei Han, Xinyu Ye
Summary: A new type of Cr3+-doped Mg2Al4Si5O18 broadband NIR phosphor, synthesized using the high-temperature solid-state reaction method, matches a blue LED chip. It exhibits a broadband NIR phosphor emission with a focus of 856 nm and a full width at half maximum >200 nm. The developed NIR pc-LED shows significant potential for use in night-vision imaging.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Longyun Lv, Hao Yang, Xiaohua Cheng, Yufan Lin, Xuerui Chang, Teng Cheng, Yipeng Xie, Ying Han, Juan Li, Jun Yin, Bin-Bin Cui
Summary: We synthesized a new zero-dimensional antimony-based metal halide of (NII)2SbCl5, which exhibits a broadband yellow emission under 365 nm excitation and has a photoluminescence quantum yield of over 88%. A white light emitting diode (WLED) assembled with a phosphor mixture containing the (NII)2SbCl5 phosphor shows perfect white-light with a correlated color temperature of 6071 K and a color rendering index of 81.58. This indicates that (NII)2SbCl5 is a promising yellow phosphor material for solid-state lighting.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Seth Kenkel, Mark Gryka, Lin Chen, Matthew P. Confer, Anirudha Rao, Scott Robinson, Kannanganattu V. Prasanth, Rohit Bhargava
Summary: Nearfield spectroscopic imaging techniques can be a powerful tool to simultaneously map cellular ultrastructure and molecular composition, but their current capabilities are limited. This study proposes an instrument design that combines null-deflection measurements with resonance enhancement to achieve high-sensitivity nanoscale infrared imaging. Experimental results using cellular acini samples demonstrate the ability of this method to easily record high-quality chemical imaging data.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Physics, Applied
Xiulian Fan, Luwei Zou, Wenlong Chu, Li Wang, Yu Zhou
Summary: Heteroatom doping and surface passivation can tune the band structures of nonlayered two-dimensional materials for electronic and optoelectronic device applications. In this study, a stable synthesis strategy for phosphorous doping in nonlayered Cr2S3 nanoflakes via chemical vapor deposition was explored. Single crystalline ultrathin P-doped Cr2S3 nanoflakes were achieved by adjusting the hydrogen gas and sample-source distance. The electrical resistivity of P-doped Cr2S3 nanoflakes was significantly increased compared to intrinsic Cr2S3, demonstrating the potential for tuning electronic structures for more intrinsic resistive samples.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Daniel Martin-Jimenez, Michael G. Ruppert, Alexander Ihle, Sebastian Ahles, Hermann A. Wegner, Andre Schirmeisen, Daniel Ebeling
Summary: This study analyzes the suitability of qPlus sensors for modern multifrequency AFM techniques and demonstrates their ability to achieve submolecular resolution imaging. The results show that using torsional and flexural higher eigenmodes can produce good imaging results and reveal specific contrast features.
Article
Chemistry, Multidisciplinary
Victor V. Volkov, Jonathan McMaster, Joanna Aizenberg, Carole C. Perry
Summary: Raman difference imaging provides insight on cellular biochemistry in vivo, assessing blood biochemistry at the cellular level. By analyzing Raman microscopic images of hemoglobin distribution in blood cells, pre-calculated tensors are used to interpret electronic transitions responsible for blood color. The technique offers a sensitive diagnostic tool for understanding cellular biochemistry.
Article
Physics, Mathematical
Min Sun, Zi Li, Guo-Zhen Zhu, Wen-Qing Liu, Shao-Hua Liu, Chong-Yu Wang
COMMUNICATIONS IN COMPUTATIONAL PHYSICS
(2016)
Article
Chemistry, Physical
Y. X. Li, G. -z. Zhu, D. Qiu, D. D. Yin, Y. H. Rong, M. -X. Zhang
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Physical
W. Zhou, L. M. Fu, P. Liu, X. D. Xu, B. Chen, G. Z. Zhu, X. D. Wang, A. D. Shan, M. W. Chen
Article
Materials Science, Multidisciplinary
Dong Yue Xie, Jiawei Yan, Yangxin Li, Dong Qiu, Guilin Wu, Xiaodong Wang, Bin Chen, Yao Shen, Guo-zhen Zhu
Article
Materials Science, Multidisciplinary
Yanguang Cui, Dongyue Xie, Ping Yu, Yunlong Guo, Yonghua Rong, Guozhen Zhu, Mao Wen
COMPUTATIONAL MATERIALS SCIENCE
(2018)
Article
Nanoscience & Nanotechnology
Nicolas Gauquelin, Hao Zhang, Guozhen Zhu, John Y. T. Wei, Gianluigi A. Botton
Article
Chemistry, Multidisciplinary
Fang Liu, Dong Yue Xie, Matthieu Bugnet, Tahereh Majdi, John S. Preston, Jian Wang, Guo-zhen Zhu
ADVANCED MATERIALS INTERFACES
(2018)
Article
Materials Science, Multidisciplinary
Anchao Yi, Fang Liu, Dong Yue Xie, Mao Wen, Guo-zhen Zhu
MATERIALS CHARACTERIZATION
(2019)
Article
Materials Science, Multidisciplinary
Ping Yu, Yanguang Cui, Guo-zhen Zhu, Yao Shen, Mao Wen
Article
Chemistry, Physical
Siyu Yao, Mao Wen, Guo-zhen Zhu
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Minghui Lin, Yushun Liu, Guozhen Zhu
Article
Chemistry, Physical
Ping Yu, Guo-zhen Zhu, Mao Wen
MOLECULAR SIMULATION
(2020)
Article
Nanoscience & Nanotechnology
Yushun Liu, Jiawei Yan, Dongyue Xie, Yao Shen, Jian Wang, Guo-zhen Zhu
Summary: The article illustrates the new possibility of synthesizing periodic dislocation arrays in pure Mg under static loading conditions, providing insight into advancing dislocation substructures that enhance the performance of engineering alloys.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Dong Yue Xie, Ming-hui Lin, Wei Zhou, Jian Wang, Guo-zhen Zhu
Article
Materials Science, Multidisciplinary
Matthieu Bugnet, Guillaume Radtke, Steffi Y. Woo, Guo-zhen Zhu, Gianluigi A. Botton
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
