Article
Nanoscience & Nanotechnology
Andjelika Bjelajac, Ileana Florea, Mihai Zamfir, Sandrine Tusseau Nenez, Costel Sorin Cojocaru
Summary: In this study, vertically aligned multiwall carbon nanotubes (CNTs) films were used as support for ZnO/ZnS photocatalytic active nanostructures. The CNTs were synthesized using a hot-filament chemical vapor deposition (HfCVD) method. Point defects in the CNTs outer walls were created using a low pressure nonthermal water vapors diffusive plasma, and Zn nanoparticles were subsequently electrodeposited onto the CNTs. The samples were annealed to obtain ZnO, ZnS, and a mix phase of ZnO/ZnS. The absorption of ZnO was enhanced by S doping and involvement of CNTs, and the ZnO1-xSx@CNTs heteronanostructure showed the highest photocatalytic activity for methyl blue dye degradation among the studied samples.
Article
Chemistry, Physical
Tomitsugu Taguchi, Shunya Yamamoto, Hironori Ohba
Summary: The study successfully synthesized double-thick-walled (DTW) silicon carbide (SiC) nanotubes with unique structures and properties. Experimental results showed that DTW SiC nanotubes with perfect structures can only be synthesized with an MWCNT wall thickness of at least 50 nm.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Eunji Kim, Byeong-Joo Lee, Kathleen Maleski, Yoonjeong Chae, Yonghee Lee, Yury Gogotsi, Chi Won Ahn
Summary: This study presents a method for fabricating on-chip symmetric MSCs with coplanar interdigitated electrodes using focused-ion-beam process and carbon nanotube electrodes. The micro supercapacitors produced have high areal capacitance with narrow gaps between electrode fingers, while electron beam lithography and photolithography are utilized to create ultra-small footprint devices.
Article
Geochemistry & Geophysics
Marina Martinez, Charles K. Shearer, Adrian J. Brearley
Summary: The microstructures of martian apatite were studied using focused ion beam-transmission electron microscopy (FIB-TEM) techniques, revealing a unique nanostructure characterized by domain structure and undulous lattice fringes. The findings have implications for understanding the chemistry of apatite in other planetary systems.
AMERICAN MINERALOGIST
(2023)
Article
Multidisciplinary Sciences
Shulong Wang, Liangliang Zhang, Jingjin Zhao, Min He, Yong Huang, Shulin Zhao
Summary: The study found that the GSH level significantly increases in tumor tissues, thus it can be used as an endogenous molecule for diagnosing and treating tumors. The Fe-Cu@PANI nanoparticles prepared in the study utilize the tumor microenvironment-induced properties to activate tumor photoacoustic imaging and photothermal therapy in vivo, enhancing the efficiency of treatment.
Article
Cell Biology
Maryna Ivanchenko, Artur A. Indzhykulian, David P. Corey
Summary: Hair cells in the vertebrate inner ear have actin-filled protrusions called stereocilia which mediate mechanosensitivity. Hereditary deafness is often linked to abnormalities in stereocilia bundles, making them essential for understanding genetic hearing loss models. Electron microscopy techniques, such as TEM and SEM, are crucial for studying stereocilia morphology and protein localization.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Rebecca Kaup, Jan Bart ten Hove, Aldrik H. Velders
Summary: This study presents a versatile method for forming dendrimer superstructures using coacervate-core micelles as templates, resulting in well-defined covalently cross-linked nanostructures called dendroids. By incorporating dendrimer-encapsulated gold nanoparticles into the micelle template, stable three-dimensional structures are formed, illustrating the potential for various classes of supermolecules in different research areas.
Article
Materials Science, Multidisciplinary
Misa Hayashida, Rinyaporn Phengchat, Marek Malac, Ken Harada, Tetsuya Akashi, Nobuko Ohmido, Kiichi Fukui
Summary: Electron diffraction was used to characterize internal structures of chromosomes, revealing 100-200 nm periodic features perpendicular to the chromosome axis in unlabeled isolated human chromosomes. Electron tomography in transmission electron microscopes visualized the same periodic features in isolated chromosomes specifically labeled with OsO4.
MICROSCOPY AND MICROANALYSIS
(2021)
Article
Polymer Science
Guillaume Pillet, Pascal Puech, Sebastien Moyano, Frederic Neumayer, Wolfgang Bacsa
Summary: The conductivity of thermoplastic polymers can be effectively enhanced by incorporating carbon nanotubes on the surface. Multiwall carbon nanotubes thin films were transferred onto the polymer surface to form composite layers with electrical conductivity up to 8 S/cm, showing variations at 2.8 vol% of nanotubes. The distribution and quantity of nanotubes were studied using transmission electron microscopy and optical transmission measurements.
Article
Biochemistry & Molecular Biology
Miguel Ricardo Leung, Marc C. Roelofs, Ravi Teja Ravi, Paula Maitan, Heiko Henning, Min Zhang, Elizabeth G. Bromfield, Stuart C. Howes, Bart M. Gadella, Hermes Bloomfield-Gadelha, Tzviya Zeev-Ben-Mordehai
Summary: This study utilized advanced cryo-imaging techniques to analyze the internal structures of sperm flagella from three mammalian species, revealing novel ways in which microtubule inner proteins are connected. The importance of the base structure for flagellar beating, as well as the coupling of outer dense fibers to microtubules, was demonstrated. Mammalian sperm flagella are decorated at multiple scales, with key structures at the nano- and micrometer levels.
Article
Chemistry, Multidisciplinary
Namsoo Lim, Kyeong Heon Kim, Young Tae Byun
Summary: Highly sensitive and selective chemiresistive-type NO gas detection was demonstrated using defected single-walled carbon nanotubes (SWCNTs) decorated with specific molecules, showing a 3-fold enhancement in NO response compared to non-defected SWCNTs. The recovery performance was significantly improved by 45 times via a simple rinsing process with ethanol. The fabricated device showed high selectivity to NO gas and has potential applications in healthcare fields requiring ppb-level detection.
Article
Polymer Science
Magdalena Krystyjan, Gohar Khachatryan, Karen Khachatryan, Marcel Krzan, Wojciech Ciesielski, Sandra Zarska, Joanna Szczepankowska
Summary: Nanotechnology is a rapidly developing field with applications in various industries. This article focuses on carbon nanomaterials, particularly graphene, nanotubes, and quantum dots, and their successful use in biotechnology, biomedicine, and environmental applications. The research and development of innovative carbon-based nanomaterials and the potential of nanotechnology in diverse fields are of great interest.
Article
Microscopy
Misa Hayashida, Channarong Sartsanga, Rinyaporn Phengchat, Marek Malac, Ken Harada, Tetsuya Akashi, Kiichi Fukui, Nobuko Ohmido
Summary: The higher order structure of metaphase chromosomes has been a long-standing mystery. This study used ionic liquid and electron tomography to observe periodic structures with 300-400 nm pitch in barley chromosomes.
Article
Chemistry, Physical
Vladimir Z. Mordkovich, Aida R. Karaeva, Nikita Kazennov, Eduard B. Mitberg, Mariem Nasraoui, Boris A. Kulnitskiy, Vladimir D. Blank
Summary: This study reports on the identification of the formation zone and conditions for unusual closed multishell carbon nanocapsules in a reactor for float-catalysis synthesis of longer carbon nanotubes. Structural investigation of the formed nanocapsule material and computational fluid dynamics simulations of the reactor revealed a mechanism for nanocapsule formation.
Article
Physics, Multidisciplinary
Stefano Bosco, Pasquale Scarlino, Jelena Klinovaja, Daniel Loss
Summary: Spin qubits in silicon and germanium quantum dots are promising platforms for quantum computing. However, there is a critical challenge of entangling spin qubits over micrometer distances. Current research focuses on maximizing interactions between qubits and microwave resonators, but this leads to unavoidable residual qubit-qubit couplings. Interestingly, these residual couplings can be eliminated by introducing longitudinal spin-photon interactions in hole spin qubits.
PHYSICAL REVIEW LETTERS
(2022)
Review
Chemistry, Physical
Xiaoxing Ke, Manchen Zhang, Kangning Zhao, Dong Su
Summary: This review discusses the development and applications of the STEM-MF method in materials science and presents the future directions for this technique.
Article
Chemistry, Multidisciplinary
Xu Jin, Yehu Han, Zhengfeng Zhang, Yawei Chen, Jianming Li, Tingting Yang, Xiaoqi Wang, Wanxia Li, Xiao Han, Zelin Wang, Xiaodan Liu, Hang Jiao, Xiaoxing Ke, Manling Sui, Ruiguo Cao, Genqiang Zhang, Yongfu Tang, Pengfei Yan, Shuhong Jiao
Summary: This study reports on the exceptional fast charge/discharge performance and long-term stability of a mesoporous single-crystalline lithium titanate (MSC-LTO) microrod in lithium-ion batteries (LIBs). The microrods exhibit high rate capability and minimal structure degradation, providing a new approach for developing fast-charging materials for LIBs.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Sijing Chen, Fei Liu, Boyu Liu, Xiao Chen, Xiaoxing Ke, Manchen Zhang, Xiaochang Tang, Pengfei Guan, Ze Zhang, Zhiwei Shan, Qian Yu
Summary: By utilizing electron beam irradiation to modify the uneven surface of MgO NPs, surface nano-crystallization can be achieved, leading to an increase in compressive strength and approaching the theoretical strength of the material. This study demonstrates that imperfections in materials can be homogenized to optimize properties to approach that of perfect crystals.
Article
Chemistry, Multidisciplinary
Guowei Wang, Guikai Zhang, Xiaoxing Ke, Xiangyu Chen, Xu Chen, Yueshuai Wang, Guoyu Huang, Juncai Dong, Shengqi Chu, Manling Sui
Summary: Metallic MoS2 (1T-MoS2) is a promising precious-metal-free electrocatalyst with excellent hydrogen evolution reaction (HER) performance in acidic media. However, its sluggish HER kinetics in alkaline media and inability for the oxygen evolution reaction (OER) hinder its development as bifunctional catalysts. This study successfully addresses the challenge of 1T-MoS2 synthesis using a direct one-step hydrothermal method, resulting in flower-like 1T-MoS2 morphology. The doping of transition metals (Ni, Co, Fe) into 1T-MoS2 enhances its bifunctional catalytic activity, with Ni-1T-MoS2 demonstrating the highest HER/OER performance in alkaline media. Finally, a Ni-1T-MoS2||Ni-1T-MoS2 electrolyzer is fabricated, achieving a high current density for overall water splitting at a low applied cell voltage.
Review
Chemistry, Multidisciplinary
Zelin Wang, Xiaoxing Ke, Manling Sui
Summary: This mini-review summarizes recent progress on revealing 3D structures of electrocatalysts using 3D electron tomography. It discusses the information that can be revealed at nanoscale and atomic scale, and explores the application of this technique in durability investigation and post-treatment of electrocatalysts.
FRONTIERS IN CHEMISTRY
(2022)
Review
Physics, Condensed Matter
Xiaomei Wu, Xiaoxing Ke, Manling Sui
Summary: This review summarizes recent studies on advanced transmission electron microscopy (TEM) characterizations of halide perovskites. It covers topics such as irradiation damage under conventional imaging conditions, low-dose TEM, atomic-resolution imaging, defects identification, chemical mapping, cryo-TEM, and in-situ TEM for degradation study. These characterizations help in understanding the structure-property relationship and degradation mechanism of halide perovskites, and aid in the design of more efficient and robust energy materials.
JOURNAL OF SEMICONDUCTORS
(2022)
Editorial Material
Physics, Condensed Matter
Xiaoxing Ke, Yong Zhang
JOURNAL OF SEMICONDUCTORS
(2022)
Article
Engineering, Environmental
Ruyi Gao, Manchen Zhang, Yuxi Liu, Shaohua Xie, Jiguang Deng, Xiaoxing Ke, Li Jing, Zhiquan Hou, Xing Zhang, Fudong Liu, Hongxing Dai
Summary: This study demonstrates the catalytic roles of a bifunctional catalyst with an atomic-scale metal/oxide interface. The catalyst exhibits strong resistance to chlorine at low temperatures and excellent catalytic stability in the oxidation of multicomponent volatile organic compounds (VOCs).
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Gufei Zhang, Ramiz Zulkharnay, Xiaoxing Ke, Meiyong Liao, Liwang Liu, Yujie Guo, Yejun Li, Horst-Guenter Rubahn, Victor V. Moshchalkov, Paul W. May
Summary: By investigating electrical transport phenomena, it is found that diamond nanorings (DNRs) transform into bosonic semiconductors upon the formation of Cooper pairs, exhibiting a sharp resistance increase and a giant negative magnetoresistance. In contrast, diamond half-loops (DHLs) undergo a metal-superconductor transition. This finding reveals the potential use of DNRs in manipulating Cooper pairs in superconducting quantum devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Leilei Chen, Rong Huang, Xiaoxing Ke, Jin Yu, Tiantian Zhang, Jean-Luc Maurice, Jiheng Li, Kai Li, Lifeng Ni, Shuzhao Huang, Tiezhen Ren, Zhanbing He
Summary: A facile method for preparing vertically aligned and parallel growth of aluminum-cobalt oxide nanosheet arrays is reported. The parallel growth is attributed to lattice-matching among the nanosheets, buffer layer, and substrate, which is confirmed by transmission electron microscopy. Furthermore, the aluminum-cobalt oxide nanosheets exhibit high-temperature ferromagnetism, indicating potential applications in high-temperature ferromagnetic fields.
Article
Nanoscience & Nanotechnology
Huawei Wang, Jialong Gao, Changli Chen, Wei Zhao, Zihou Zhang, Dong Li, Ying Chen, Chenyue Wang, Cheng Zhu, Xiaoxing Ke, Jiajing Pei, Juncai Dong, Qi Chen, Haibo Jin, Maorong Chai, Yujing Li
Summary: This work demonstrates a hybrid electrocatalyst composed of PtNi-W alloy nanocrystals loaded on carbon surface with atomically dispersed W sites. The presence of single-atomic W on the carbon surface can create protonic acid sites and establish an extended proton transport network at the catalyst surface. When used as a cathode in a membrane electrode assembly with ultra-low loading of 0.05 mg(Pt) cm(-2), the peak power density of the fuel cell is increased by 64.4% compared to commercial Pt/C catalyst. Theoretical calculations indicate that the single-atomic W possesses favorable energetics for *OOH formation, allowing efficient conversion of intermediates and promoting interfacial cascade catalysis. This work highlights a novel functional hybrid electrocatalyst design from the atomic level, addressing the bottleneck issues at the device level.
NANO-MICRO LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Shuo Wu, Xiaolong Xu, Zelin Wang, Xiaoxing Ke, Shaonan Gu, Guowei Zhou, Lianzhou Wang
Summary: In this study, we propose an engineering strategy to fabricate high Co atomic loading Co-N-4-C single-atom catalysts (SACs) based on the biomineralization of yeast cells. The optimized sample showed a Co atomic loading of 12.18 wt % and a specific surface area of 403.26 m(2) g(-1). It exhibited excellent electrocatalytic kinetics and a high discharge voltage of 1.08V at 10 mA cm(-2) for more than 100 h in Zn-air batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Guowei Wang, Manchen Zhang, Guikai Zhang, Zelin Wang, Xu Chen, Xiaoxing Ke, Changhao Wang, Shengqi Chu, Manling Sui
Summary: This study proposes an innovative approach to synthesize dual-atomic-site alloy (DASA) through two-step pyrolysis, avoiding the challenges of sintering and alloying on metal hosts. The approach is demonstrated by synthesizing Ir1Ni1@Co/N-C DASA, which exhibits outstanding bifunctional oxygen reduction/evolution reaction (ORR/OER) performance in both acidic and alkaline media. The density functional theory (DFT) calculations further reveal the regulation of adsorption-free energies of intermediates by Ir1 and Ni1 on Co.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hao-Zhe Xu, Dong Li, Ying Chen, Pin Fang, Xiao-Xing Ke, Olga Demidenko, Yu-Jing Li
Summary: Tungsten oxide (WO3) has attracted attention for its electrochemical stability and proton absorption/desorption capability. In this study, a PtCuNi/WO3/C hybrid catalyst with an inter-diffusive alloy/WO3 interface on carbon was prepared. The catalyst exhibits enhanced activity and stability associated with the WO3 content, which is due to the complementary proton supply of non-stoichiometric HxWO3 and the prevention of particle dissolution and detachment by WO3.
Article
Chemistry, Multidisciplinary
Min Wang, Ling Lin, Zhangyi Zheng, Zhenyang Jiao, Wei Hua, Guowei Wang, Xiaoxing Ke, Yuebin Lian, Fenglei Lyu, Jun Zhong, Zhao Deng, Yang Peng
Summary: An integral gas diffusion electrode (NiNF) with hierarchical porosity was fabricated through electrospinning, addressing the issues of delamination, flooding, salt precipitation, and limited utilization of active sites. The GDE, with a hydrophobic superficial layer, works in a broad pH range and achieves near-unity faradaic efficiency of CO with high peak current densities in both alkaline and acidic flow cells. This work shows the potential of industrial-scale CO2 electrolysis through GDE design innovation.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
