Article
Chemistry, Multidisciplinary
Lucie Simonova, Milan Matejka, Alexandr Knapek, Tomas Kralik, Zuzana Pokorna, Filip Mika, Tomas Fort, Ondrej Man, Pavel Skarvada, Alexandr Otahal, Pavel Cudek
Summary: This research focuses on developing a new method for creating nanostructures with high emissivity to match the needs of a selective emitter for the visible and near-infrared region in a thermophotovoltaic system. By using tungsten as the main material and optimizing the process parameters, the study successfully developed nanostructures that can potentially improve the selectivity of the thermophotovoltaic emitter.
Article
Engineering, Electrical & Electronic
Jiupeng Li, Yu Zhang, Yanlin Ke, Baohong Li, Shaozhi Deng
Summary: This paper reports on a convex carbon nanotube (CNT) emitter cathode that improves the focus and laminar flow of the electron beam for a cold cathode gun, leading to better distribution uniformity. Compared with the planar CNT emitter cathode, the convex emitter cathode demonstrates better uniformity and compatibility on the quality control of the electron beam.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Multidisciplinary
Tianzeng Hong, Chan Guo, Yu Zhang, Runze Zhan, Peng Zhao, Baohong Li, Shaozhi Deng
Summary: This study investigates the nucleation and growth mechanism of vertical few-layer graphene (VFLG) on different substrates and finds that the properties of substrates have a significant impact on the initial nucleation and growth of VFLG. The quality of VFLG is less related to the substrate and more influenced by growth conditions. Additionally, the study shows that the conductivity of VFLG is similar on different substrates, but the interfacial contact resistance varies greatly. Stainless-steel substrate is found to be the most favorable for electrical applications.
Article
Nanoscience & Nanotechnology
Christian Dolle, Peter Schweizer, Daniela Dasler, Sebastian Gsaenger, Robert Maidl, Gonzalo Abellan, Frank Hauke, Bernd Meyer, Andreas Hirsch, Erdmann Spiecker
Summary: Covalent functionalisation is an effective approach to tune the properties and processability of graphene. This study successfully observed atomic resolution imaging of dodecyl functionalised monolayer graphene using mechanical filtering method, providing new possibilities for the investigation of this hybrid material.
NPJ 2D MATERIALS AND APPLICATIONS
(2022)
Article
Chemistry, Physical
Kazybek Aimaganbetov, Nurlan Almas, Bayan Kurbanova, Dauren Muratov, Abay Serikkanov, Zinetula Insepov, Nurlan Tokmoldin
Summary: Despite its potential for various applications, the commercialization of graphene is hindered by the challenge of preserving its unique properties upon transfer to desired substrates. This study investigates the liquid-phase transfer of few-layer graphene sheets from copper to quartz substrates and reveals unintentional etching and the formation of facet structures on the substrate surface. Additionally, the transfer process results in p-type doping of the graphene due to the etching of the copper foil. The observed increase in conductance with temperature suggests thermally activated carrier transport.
Article
Materials Science, Multidisciplinary
Pei-Min Ting, Jun-Ying Huang, Rasu Muruganantham, Wei-Ren Liu
Summary: This study proposes two different nitrogen doping approaches to investigate the electrochemical behavior of few-layer graphene as anode materials for Li-ion batteries. The results show that nitrogen doping can significantly improve the electrochemical performance of few-layer graphene.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Zhifu Feng, Damiano Giubertoni, Alessandro Cian, Matteo Valt, Mario Barozzi, Andrea Gaiardo, Vincenzo Guidi
Summary: In this study, a new method combining electron beam lithography (EBL) and focused ion beam (FIB) technologies is proposed to achieve low power consumption in MOS gas sensors. The miniaturization of the hotplate geometry is realized using this method, reducing power consumption effectively. The effectiveness and feasibility of this method are demonstrated through characterization and testing.
Article
Chemistry, Inorganic & Nuclear
Dong Dong Zhao
Summary: The effects of stacking and incident angle on the structural damage caused by heavy ion irradiation in graphene are investigated using molecular dynamics simulation. The growth of stacking layers results in more serious damage to the overall and surface layers. There are obvious differences in the damage of each layer, with the damage becoming weaker towards the center. The impact of incident angle on damage is discussed in three-layer graphene, where the two surface layers are not affected, and the damage of the intermediate layer decreases with decreasing incident angle. The driving force for structural damage is the propagation of stress waves from the energy deposition region to the surrounding.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jiake Wei, Qiuhao Xu, Zhi Xu, Wenlong Wang, Sheng Meng, Xuedong Bai
Summary: Through atomic-scale molecular dynamics simulations and dynamic observations, it is found that Coulomb explosion and field evaporation can modify the structures of few-layer graphene nanoribbons. Coulomb explosion splits the nanoribbons into several sheets, while field evaporation breaks them by emitting carbon ions/segments. The shape of the nanoribbons influences the sequence of splitting and breaking. These findings provide fundamental understanding of Coulomb explosion and field evaporation in graphene nanomaterials and suggest potential engineering methods.
Article
Chemistry, Multidisciplinary
Oleksandr Buchnev, James A. Grant-Jacob, Robert W. Eason, Nikolay I. Zheludev, Ben Mills, Kevin F. MacDonald
Summary: Researchers have developed a deep learning method based on prior experience to predict the postfabrication appearance of structures manufactured by focused ion beam (FIB) milling, which can expedite the optimization process and improve reproducibility in FIB processing.
Article
Chemistry, Physical
Faridul Islam, Jialong Wang, Arash Tahmasebi, Rou Wang, Behdad Moghtaderi, Jianglong Yu
Summary: A few-layer graphene (FLG) composite material was successfully synthesized using microwave-assisted catalytic graphitization process, showing promising properties. The use of 5% dual (Fe-Ni) catalyst resulted in higher graphitization degree and higher Coulombic efficiency.
Article
Chemistry, Applied
Yu-Qi Zhou, Xiao-Ling Dong, Wen-Cui Li, Guang-Ping Hao, Dong Yan, An-Hui Lu
Summary: This study successfully prepared few-layer graphene sheets with aligned pores through a self-catalysis-assisted bottom-up synthesis route, which is of great significance for energy storage applications.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Deying Xia, Ying-Bing Jiang, John Notte, Doug Runt
Summary: This study compares the usage of a neon focused ion beam with the traditional gallium focused ion beam for milling GaAs material, finding that neon FIB produces less undesired artifacts and subsurface damage at lower energies. Additionally, neon FIB can create trenches as small as 20 nm wide with high fidelity and minimal damage.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Pablo Orus, Fabian Sigloch, Soraya Sangiao, Jose Maria De Teresa
Summary: Superconductivity has been a fascinating and important field of study in physics and materials science since its discovery in 1911. Nanofabrication techniques using focused ion/electron beam induced deposition can downsize superconducting materials to the nanoscale, allowing for targeted and highly-flexible nanopatterning. Tungsten, niobium, molybdenum, carbon, and lead have been identified as the most notable superconducting materials used in functional devices.
Article
Materials Science, Multidisciplinary
Christian Brand, Mohammad R. A. Monazam, Clemens Mangler, Yigal Lilach, Ori Cheshnovsky, Markus Arndt, Jani Kotakoski
Summary: This research analyzes the response of micro/nano-patterned graphene to mechanical forces, specifically focusing on the morphology of nanoribbons. It was found that the length of the structures determines their flatness or crumpling behavior, with molecular dynamics simulations confirming the experimental results. The study provides experimental constraints for the stability of free-standing graphene structures with respect to their geometry, guiding future applications of patterned graphene.
Article
Engineering, Electrical & Electronic
Xinxin Xu, Rudy Pang, P. Santhana Raman, Rajasekaran Mariappan, Anjam Khursheed, Jeroen A. van Kan
MICROELECTRONIC ENGINEERING
(2017)
Article
Multidisciplinary Sciences
Xiuyuan Shao, Avinash Srinivasan, Wei Kean Ang, Anjam Khursheed
NATURE COMMUNICATIONS
(2018)
Review
Chemistry, Multidisciplinary
Xiuyuan Shao, Anjam Khursheed
APPLIED SCIENCES-BASEL
(2018)
Article
Chemistry, Multidisciplinary
Xiuyuan Shao, Shisheng Li, Dai-Ming Tang
Article
Materials Science, Multidisciplinary
Avinash Srinivasan, Weiding Han, Anjam Khursheed
MICROSCOPY AND MICROANALYSIS
(2018)
Article
Physics, Applied
Xiuyuan Shao, Wei Kean Ang, Pranesh Balamuniappan, Anjam Khursheed
APPLIED PHYSICS LETTERS
(2019)
Article
Multidisciplinary Sciences
Andrew Bah, Kim Yong Lim, Fuhua Wei, Anjam Khursheed, Chorng Haur Sow
SCIENTIFIC REPORTS
(2019)
Article
Physics, Nuclear
Pranesh Balamuniappan, Wei Kean Ang, Anjam Khursheed
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2019)
Article
Multidisciplinary Sciences
W. Han, M. Zheng, A. Banerjee, Y. Z. Luo, L. Shen, A. Khursheed
SCIENTIFIC REPORTS
(2020)
Correction
Multidisciplinary Sciences
W. Han, M. Zheng, A. Banerjee, Y. Z. Luo, L. Shen, A. Khursheed
Summary: An amendment to this paper has been published and can be accessed through a link at the top of the paper.
SCIENTIFIC REPORTS
(2021)
Letter
Medicine, General & Internal
Rachel Yi Xuan Tan, Khin Khin Win, Anjam Khursheed, Chinniah Saraswathy, Gek Hsiang Lim, Suresh Sahadevan
ANNALS ACADEMY OF MEDICINE SINGAPORE
(2021)
Article
Chemistry, Physical
Jonathan Chuah, Anjam Khursheed
Summary: This paper introduces a design of a REELS attachment for LVSEM applications, which is achieved through ray paths simulation, aiming to achieve nanoscale spatial resolution in SEM. The design uses a retarding field electrostatic toroidal sector energy analyzer to lower kinetic energies of electrons for better energy resolution.
Article
Materials Science, Multidisciplinary
W. Han, A. Srinivasan, A. Banerjee, M. Chew, A. Khursheed
MATERIALS TODAY ADVANCES
(2019)
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
