Article
Optics
Huili Han, Minglin He, Hao Liu, Bi Zhang, Cong Zhou
Summary: This study investigates the formation mechanism and crystalline orientation effects of damage in ultrafast laser processing of single-crystal diamond. The results show that the damage evolution can be divided into three stages and crystal orientation significantly affects the groove shapes, cracks, and phase transformation. The findings provide a new perspective on ultrafast laser processing of single-crystal diamond, which is crucial for the fabrication of diamond-based functional micro/nano devices with high precision and low damage.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Chemistry, Physical
Chengyuan Yang, Zhaohong Mi, Huining Jin, Thirumalai Venkatesan, Ratnakar Vispute, Andrew A. Bettiol
Summary: We report a method for large-scale fabrication of negatively charged Silicon-vacancy (SiV-) centers in diamond membranes using MeV Helium ion implantation. Despite the polycrystalline structure of the diamond membranes, the SiV- centers exhibit a fluorescence lifetime comparable to those fabricated in single crystal diamonds. Patterning of SiV- centers with varying densities is demonstrated using a focused ion beam.
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)
Article
Nanoscience & Nanotechnology
Mitchell Semple, Aaron C. Hryciw, Peng Li, Eric Flaim, Ashwin K. Iyer
Summary: This study systematically investigates the use of helium focused ion beam milling of gold for nanoplasmonic metasurface applications, demonstrating the reliable patterning of 10 nm features into gold with complex geometries over a wide area. The results provide strong support for the application of nanoplasmonic metasurfaces in modern research areas.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Olga S. Ovchinnikova, Nikolay Borodinov, Artem A. Trofimov, Steven T. King, Matthias Lorenz, William Lamberti, David Abmayr, Anton Ievlev
Summary: Chemical imaging of polymers and polymer blends has traditionally been done using ToF-SIMS with limited spatial resolution, but recent work has focused on using HIM-SIMS for higher resolution. By utilizing HIM-SIMS, differentiation between PE and PP as well as imaging of phase-separated domains within PE has been achieved, demonstrating its potential for analyzing complex polymeric systems.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Analytical
Frances I. Allen
Summary: Helium ion beam induced deposition using gaseous precursor pentamethylcyclopentasiloxane is employed to fabricate high aspect ratio insulator nanostructures that exhibit charge induced branching. By increasing the precursor flow rate, the vertical growth rate and branching phenomenon can be significantly enhanced, with fractalesque branching patterns observed. This direct-write ion beam nanofabrication technique offers a fast single-step method for growing high aspect ratio branched nanostructures with site-selective placement on the nanometer scale.
Article
Thermodynamics
Jianguo Wu, Chao Luo, Kesu Zhong, Yi Li, Guoliang Li, Zhongming Du, Jijin Yang
Summary: To accurately and comprehensively analyze the properties of organic nanopores in marine shale, an integration method using helium ion microscope (HIM), scanning electron microscope (SEM), focused ion beam-HIM (FIB-HIM), and FIB-SEM was proposed. Results showed that organic pores below 10 nm significantly impact shale gas storage and productivity evaluation by affecting porosity, surface area, pore size distribution, and connectivity characteristics. The integration method revealed an increase in surface porosity by 10.73% and an increase in specific surface area by 76%. It also showed that the formation of organic nanopores occurs in multiple stages, with larger bubble pores appearing during oil generation and smaller spongy pores appearing during gas generation. The organic pores revealed by FIB-HIM exhibited higher coordination numbers and a higher proportion of inner-connected volume, indicating more complex connectivity characteristics. Despite limitations, these novel insights highlight the importance of exploring organic nanopores at the nanoscale and have the potential to inform further research in this field.
Article
Materials Science, Multidisciplinary
Leo Saturday, Leslie Wilson, Scott Retterer, Nicholas J. Evans, Dayrl Briggs, Philip D. Rack, Nickolay Lavrik
Summary: Polycrystalline diamond films have unique structural and thermal properties that make them suitable for use in extreme environments. They have been utilized in accelerator beamlines for electron stripping due to their unique combination of mechanical and thermal properties. Research on thermal conductivities of nanocrystalline diamond (NCD) and microcrystalline diamond (mu CD) films using photothermally actuated bimaterial cantilevers can provide valuable insights for various applications.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiaolei Wen, Lansheng Zhang, Feng Tian, Yang Xu, Huan Hu
Summary: This study reports a helium ion bombardment-enhanced etching method for silicon nanofabrication without the use of resists. It demonstrates the unique advantages of straightforward fabrication on irregular surfaces and direct fabrication on 3D micro/nano surfaces.
Article
Chemistry, Physical
Ghislaine Vantomme, Lars C. M. Elands, Anne Helene Gelebart, E. W. Meijer, Alexander Y. Pogromsky, Henk Nijmeijer, Dirk J. Broer
Summary: Upon light stimulation, two jointed liquid crystalline network oscillators influence each other's movement, achieving synchronized oscillations similar to the synchronized motion of pendula and metronomes. The synchronized motion of thin plastic actuators is demonstrated, showing coupling between the asymmetric oscillators and the tunability of motion through mechanical properties of the coupling joint. This suggests that complex synchronization phenomena seen in rigid systems can also exist in soft polymeric materials, enabling collective motion by photo-actuation.
Article
Materials Science, Multidisciplinary
Teng-Jan Chang, Hsing-Yang Chen, Chin- Wang, Hsin-Chih Lin, Chen-Feng Hsu, Jer-Fu Wang, Chih-Hung Nien, Chih-Sheng Chang, Iuliana P. Radu, Miin-Jang Chen
Summary: In recent years, the interest in Hf0.5Zr0.5O2 (HZO) thin films has grown due to their well-behaved ferroelectricity and high compatibility with semiconductor integrated circuit technology. The phase transformation and wake-up effect in HZO were identified using the precession electron diffraction (PED) phase mapping technique. The absence of the tetragonal (t-) phase is responsible for the wake-up-free property in the ferroelectric HZO thin film. The wake-up-free and pronounced ferroelectricity of the nanoscale HZO thin film in this study may have practical implications for various ferroelectric applications.
Article
Materials Science, Multidisciplinary
Qian Zhang, Ruirui Huang, Jiaxi Jiang, Tangqing Cao, Yongpan Zeng, Jianguo Li, Yunfei Xue, Xiaoyan Li
Summary: As a new class of revolutionary alloy materials, high entropy alloys (HEAs) have been extensively studied due to their unique composition, microstructures, and superior mechanical properties. This study focused on the deformation behavior and mechanisms of HEA single crystals at the micro/nanoscale, revealing different size effects and deformation mechanisms in crystals with different orientations, providing insights for the design and fabrication of high-strength HEAs with remarkable plasticity.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Physics, Applied
Yasushi Hoshino, Yuhei Seki, Kei Mitsuhara
Summary: In this study, the local structures and depth profiles of phosphorus atoms implanted into diamond were investigated. The results showed that phosphorus atoms implanted with high doping concentration mainly exist at the substitutional site, but they seem to bond with hydroxyl or vacancy complexes, resulting in electrical inactivation. Moreover, a damaged layer caused by ion irradiation near the surface acts as a diffusion channel and trap site for various impurities. High-temperature annealing with a cap layer effectively suppresses the formation of the defective layer.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Multidisciplinary
Ewelina Gacka, Piotr Kunicki, Andrzej Sikora, Robert Bogdanowicz, Mateusz Ficek, Teodor Gotszalk, Ivo W. Rangelow, Krzysztof Kwoka
Summary: This paper presents the fabrication process and electromechanical properties of novel atomic force microscopy probes using single-crystal boron-doped diamond. The developed probes show high durability and wear resistance, along with good linear current voltage response during testing.
Article
Chemistry, Physical
Teodor I. Milenov, Dimitar A. Dimov, Ivalina A. Avramova, Stefan K. Kolev, Dimitar V. Trifonov, Georgi V. Avdeev, Daniela B. Karashanova, Biliana C. Georgieva, Kamen V. Ivanov, Evgenia P. Valcheva
Summary: This study focuses on the evaluation of the influence of chemical treatment on the structure and morphology of carbon phases. The chemical interactions of two types of graphite and carbon black with acetone, toluene, and phenol were studied. Experimental and theoretical methods were used to determine the chemical and phase composition, as well as the morphology and structure. The findings suggest that the treatment of graphite powders and carbon black with acetone, toluene, or phenol can be an effective preliminary stage for their modification and conversion into graphene-like phases.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Materials Science, Ceramics
H. Besharatloo, M. de Nicolas-Morillas, M. Chen, A. Mateo, B. Ferrari, E. Gordo, E. Jimenez-Pique, J. M. Wheeler, L. Llanes
Summary: The influence of microstructure and processing route on the mechanical response, deformation, and failure mechanisms of Ti(C,N)-FeNi cermets were investigated by compressing micropillars milled by focused ion beam. Stress-strain curves and deformation mechanisms were observed using scanning electron microscopy. The appropriate micro-pillar size was determined based on the microstructural characteristics to overcome scale effect issues. The results showed a direct relationship between yield strength and ceramic/metal ratio for colloidal samples, and deformation of metallic binder and glide between Ti(C,N)/Ti(C,N) particles were dominant mechanisms during compression.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Amit Sharma, Oz Mendelsohn, Anuj Bisht, Johann Michler, Raj Kiran Koju, Yuri Mishin, Eugen Rabkin
Summary: It is discovered that alloying pristine crystalline nickel nanoparticles with iron leads to unexpected softening due to the random distribution of solute atoms and nano-size precipitates. This softening effect is observed in particles with different compositions and orientations, and it is associated with premature dislocation nucleation caused by the randomly distributed solute atoms. The manipulation of classical hardening mechanisms in defect-free single-crystalline metal nanoparticles offers new possibilities for controlling their plastic deformation.
Article
Materials Science, Multidisciplinary
Nicolo Maria della Ventura, Peter Schweizer, Amit Sharma, Manish Jain, Thomas Edward James Edwards, J. Jakob Schwiedrzik, Cinzia Peruzzi, Roland E. Loge, Johann Michler, Xavier Maeder
Summary: The strain rate and temperature dependent mechanical response of single crystal magnesium micropillars compressed along the a-axis was investigated. It was found that extension twinning controlled the plasticity at temperatures below 423K, while prismatic dislocation mediated plasticity dominated at temperatures above 423K and strain rates below 10s-1. At higher strain rates, deformation twinning occurred again. The study also provided a detailed analysis of the transition from slip to twin and the influence of thermal and kinetic contributions on the flow stress evolution.
Article
Materials Science, Multidisciplinary
Barbara Putz, Thomas E. J. Edwards, Emese Huszar, Patric A. Gruber, Kevin-P Gradwohl, Patrice Kreiml, Daniel M. Toebbens, Johann Michler
Summary: A series of Al and Al/Al2O3 thin-film multilayer structures were fabricated on flexible polymer substrates using a unique deposition chamber combining magnetron sputtering and atomic layer deposition, and were thoroughly characterized using transmission electron microscopy. The electromechanical behavior of the multilayers and Al reference films was investigated, and it was found that all films exhibited excellent interfacial adhesion without delamination in the investigated strain range. The adhesion-promoting naturally forming amorphous interlayer was confirmed for the first time for thin films sputter deposited onto polymers under laboratory conditions.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Analytical
Agnieszka Priebe, Abdessalem Aribia, Jordi Sastre, Yaroslav E. Romanyuk, Johann Michler
Summary: Massive demand for Li-ion batteries drives the research of new materials for next-generation batteries, such as all-solid-state batteries. TOF-SIMS shows outstanding potential for comprehensive characterization of novel Li-rich nickel manganese cobalt oxide thin films, potential cathode materials. The investigation reveals the presence of overlithiated grains and nanoparticles in the buried part of the thin films.
ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Ming Chen, Marco Simonelli, Steven Van Petegem, Yau Yau Tse, Cynthia Sin Ting Chang, Malgorzata Grazyna Makowska, Dario Ferreira Sanchez, Helena Moens-Van Swygenhoven
Summary: In this study, high-speed in situ transmission X-ray diffraction was used to measure temperature profiles and cooling rates in a Ti-6Al-4V single-track wall. It was found that the temperature exceeded the eutectic temperature up to 150 μm below the surface during the laser remelting of the top layer. The maximum cooling rates were measured to be 106 K/s at the top surface, 105 K/s at a depth of 135 μm, and 104 K/s at a depth of 255 μm. The dimensions of the melt pool and the high-temperature zone surrounding the melt pool were estimated based on the temporal evolution of crystallographic phases. It is anticipated that these in situ measurements can help verify and validate finite element models used in laser-powder bed fusion (L-PBF) processing.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Alexander Groetsch, Samuel Stelzl, Yannick Nagel, Tatiana Kochetkova, Nadim C. Scherrer, Aleksandr Ovsianikov, Johann Michler, Laszlo Pethoe, Gilberto Siqueira, Gustav Nystroem, Jakob Schwiedrzik
Summary: This study demonstrates the fabrication of non-cytotoxic nanocomposite ink using cellulose nanocrystals (CNCs) as reinforcement for printing and tuning complex 3D structures. It shows that the addition of CNCs significantly increases the stiffness of the composites. The insights gained from this study have implications for applications in medical, electronic, and energy fields.
Article
Nanoscience & Nanotechnology
Jian Zhang, Oliver Braun, Gabriela Borin Barin, Sara Sangtarash, Jan Overbeck, Rimah Darawish, Michael Stiefel, Roman Furrer, Antonis Olziersky, Klaus Muellen, Ivan Shorubalko, Abdalghani H. S. Daaoub, Pascal Ruffieux, Roman Fasel, Hatef Sadeghi, Mickael L. Perrin, Michel Calame
Summary: This article reports the integration of 9-atom wide armchair graphene nanoribbons (9-AGNRs) into a multi-gate field-effect transistor (FET) structure. High-resolution electron-beam lithography is used to define 12 nm wide finger gates, which are combined with graphene electrodes for contacting the GNRs. Low-temperature transport spectroscopy measurements reveal the formation of quantum dots (QDs) with rich Coulomb diamond patterns, indicating that the QDs are connected both in series and in parallel. Additionally, the additional gates enable differential tuning of the QDs in the nanojunction, providing the first step toward multi-gate control of GNR-based multi-dot systems.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sebastian Bruns, Christian Minnert, Laszlo Pethoe, Johann Michler, Karsten Durst
Summary: The increasing use of oxide glasses in high-tech applications demonstrates the demand for novel engineering techniques on nano- and microscale. Shaping operations of oxide glasses at room temperature usually require high temperatures close or beyond the point of glass transition T-g. However, electron irradiation has been found to facilitate the viscous flow of amorphous silica at room temperature, offering potential for local microengineering.
Article
Materials Science, Multidisciplinary
Goekhan Kara, Sami Bolat, Khushdeep Sharma, Matthias J. J. Grotevent, Dmitry N. N. Dirin, Dominik Bachmann, Roman Furrer, Luciano F. F. Boesel, Yaroslav E. E. Romanyuk, Rene M. Rossi, Maksym V. V. Kovalenko, Michel Calame, Ivan Shorubalko
Summary: This work successfully integrates an infrared photodetector with a polymer optical fiber, by wrapping graphene around the fiber and inkjet printing PbS quantum dots onto the curved surface. The resulting device acts as a functional coating and can detect infrared light without interrupting the waveguide. This cost-effective and adaptable hybrid detector approach brings us closer to multifunctional e-textiles and improved interfacing of the skin for wearable and non-invasive healthcare applications.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Nicolo M. della Ventura, Chunhua Tian, Amit Sharma, Thomas E. J. Edwards, J. Jakob Schwiedrzik, Roland E. Loge, Johann Michler, Xavier Maeder
Summary: Single-crystal magnesium micropillars with a diameter of 5 µm were compressed along the [2110] direction at cryogenic temperature (T = 184 K) at different strain rates. The predominant twinning behavior of {1012} was observed, and the critical stress required for twinning was found to be significantly higher compared to previous reports at higher temperatures. The temperature dependence of the strain rate sensitivity and activation volume for twinning was determined to be constant and linearly dependent with T, respectively, and the activation energy (Q) for twinning was calculated to be 174 kJ mol-1 for T < 273 K and 72 kJ mol-1 above.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Ming Chen, Alla S. Sologubenko, Jeffrey M. Wheeler
Summary: In this study, plasticity in single crystalline Ge over a wide temperature range, even at cryogenic temperatures, was demonstrated through in situ compression of micron-sized specimens. The size and temperature dependent plasticity was investigated, providing comprehensive knowledge for the fundamental understanding of plasticity and defect behavior in covalent semiconductors and practical guidelines for the fabrication of robust Ge-based microstructures for device applications.
Article
Materials Science, Multidisciplinary
Zhentao Liu, Zhaochu Luo, Ivan Shorubalko, Christof Vockenhuber, Laura J. Heyderman, Pietro Gambardella, Ales Hrabec
Summary: Strong, adjustable magnetic couplings are important for devices based on magnetic materials. This study demonstrates strong exchange-based coupling between arbitrarily shaped regions of a single ferrimagnetic layer by spatially patterning the compensation temperature. The coupling generates large lateral exchange coupling fields and can be used to control the switching of magnetically compensated dots with an electric current.
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.
