Article
Nanoscience & Nanotechnology
Luca Anzi, Artur Tuktamyshev, Alexey Fedorov, Amaia Zurutuza, Stefano Sanguinetti, Roman Sordan
Summary: This study demonstrates a GaAs FET with a monolayer graphene gate, where the threshold voltage can be externally controlled by an additional control gate. The graphene gate forms a Schottky junction with the transistor channel, allowing for modulation of channel conductivity and threshold voltage control.
NPJ 2D MATERIALS AND APPLICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Liangbing Ge, Kun Ni, Xiaojun Wu, Zhengping Fu, Yalin Lu, Yanwu Zhu
Summary: Recent research has shown that under pressure, large-angle twisted bi-layer graphene can exhibit flat bands near the Fermi level, potentially inducing properties such as superconductivity found in smaller-angle twisted bi-layer graphene at ambient pressure. The Fermi velocity is found to decrease monotonically with increasing pressure for large twisted angles.
Article
Chemistry, Multidisciplinary
Rui Pan, Yuanlingyun Cai, Feifei Zhang, Si Wang, Lianwei Chen, Xingdong Feng, Yingli Ha, Renyan Zhang, Mingbo Pu, Xiong Li, Xiaoliang Ma, Xiangang Luo
Summary: This article introduces a novel graphene/C-60/bismuth telluride/C-60/graphene vertical heterojunction phototransistor, which has a wide response spectral range, high responsivity peak, and fast response speed. Additionally, the analysis of impurity ionization process and regulation of positive and negative photocurrents at a gate voltage are conducted to improve the device's performance.
Article
Chemistry, Physical
Yantao Zhang, Yubin Yuan, Guiming Cao, Chuanyu Han, Xin Li, Xiaoli Wang, Guohe Zhang, Li Geng, Weihua Liu
Summary: A unique photoresponse of graphene field-effect transistor to laser pulse after a switch of back-gate voltage, referred as fresh-bias photoresponse (FBPR), is reported. FBPR suggests a prompt charge transfer process triggered by laser illumination, and the transferred charge remains as long as the back-gate voltage remains unchanged. This mechanism may offer a new approach for developing phototransistors, photodetectors or photoelectronic memory devices in the future.
Article
Materials Science, Multidisciplinary
Jie Cao, Fenghua Qi, Hai Yang, Guojun Jin
Summary: The study focuses on the band structure and topological properties of twisted bilayer graphene at the first magic angle, finding that an external moire electric potential can further flatten the lowest energy bands to create a superflat band structure. These superflat bands promote the formation of Cooper pairs and increase the superconducting temperature, while a topological phase transition can be induced by modulating relevant parameters of the electric potential when combined with a boron nitride substrate.
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
Multidisciplinary Sciences
Khaled Aliqab, Vishal Sorathiya, Meshari Alsharari, Kavan Dave, Ammar Armghan
Summary: This numerical investigation focuses on a phase transition material and hafnium (IV) oxide-based refractive index sensor that covers a wide spectral range from visible to infrared. The sensor utilizes hafnium (IV) oxide and a phase transition material (HfO2). Three layered structures with alternating layers of HfO2, silica, Ge2Sb2Te5(GST), and silver are studied, and their reflectance response for refractive indices ranging from 1 to 2.4 is discussed. The study also analyzes the impact of varying material heights on the overall performance of the structure. Formulas for calculating sensing behavior across specific wavelength and refractive index values are provided.
SCIENTIFIC REPORTS
(2023)
Article
Quantum Science & Technology
Tian Le, Qikai Ye, Chufan Chen, Lichang Yin, Dongting Zhang, Xiaozhi Wang, Xin Lu
Summary: Experimental findings show that a new type of superconductivity can be observed at the point contacts of Bi2Se3 topological insulator, which can be erased through thermal cycles and induced again by applying voltage pulses at low temperatures, suggesting significance for designing new types of quantum devices.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Article
Materials Science, Multidisciplinary
Tommaso Cea
Summary: We study the intervalley scattering induced by the Coulomb repulsion as a purely electronic mechanism for the origin of superconductivity in a few layers of graphene. The pairing is strongly favored by the presence of van Hove singularities in the density of states. We consider three different heterostructures: twisted bilayer graphene, rhombohedral trilayer graphene, and Bernal bilayer graphene. We obtain trends and estimates of the superconducting critical temperature in agreement with the experimental findings, which might identify the intervalley Coulomb scattering as a universal pairing mechanism in a few layers of graphene.
Article
Materials Science, Multidisciplinary
S. Ahmadkhani, M. Alihosseini, S. Ghasemi, I. Ahmadabadi, N. Hassani, F. M. Peeters, M. Neek-Amal
Summary: Flat bands in the energy spectrum, which can be generated by special arrangement of impurities on monolayer graphene, have attracted attention due to their unique properties. Increasing impurity density results in closely spaced bands around the Fermi level, similar to discrete lines in the spectrum of quantum dots. Fully hydrogenated (fluoridated) graphene with specific atomic arrangement exhibits Dirac cones in the band structure and a smaller Fermi velocity compared to pristine graphene, while functionalizing graphene introduces nonuniform strains and a giant pseudomagnetic field, leading to quantum Hall effect.
Article
Chemistry, Physical
U. Hyo-Guk, Jang-Chon Hong, Su -Il Kim, Song-Guk Jang, Yong-Chol Ju, Song-Chol Kim
Summary: Low defect multi-layer graphene was synthesized through electrochemical intercalation of graphite electrode in ammonium sulfate aqueous solution, followed by microwave heating and ultrasonication. The combination of ethanol as antifoaming agent, alternating current and end-face electrolysis was highly effective for achieving a high yield (>75%) production of low defect graphene. The synthesized graphene was then used to produce graphene/Al composites using stir casting method. The graphene/Al composites with a graphene loading of 0.3% exhibited approximately 40% higher tensile strength (142.2 MPa) and much lower coefficient of thermal expansion (19.8 x 10-6/K) compared to pure Al (104.0 MPa, 22.7 x 10-6/K).
CHEMICAL PHYSICS LETTERS
(2023)
Article
Computer Science, Information Systems
Dong Gyu Park, Hyunwoo Kim, Jang Hyun Kim
Summary: In this paper, a crown-shaped trench gate formed by a sidewall spacer is proposed to improve the breakdown voltage of insulated gate bipolar transistors (IGBT). The electric field is distributed to the sidewall spacer surface, reducing the peak electric field to 48% and improving the breakdown voltage to 5%. Another study suggests adding an oxide layer to trench bottom corners, which also improves the breakdown voltage. However, previous studies have shown degradation in other electrical characteristics. This study demonstrates a sidewall spacer IGBT that increases current by over 3% compared to conventional trench IGBTs and maintains similar turn-off loss characteristics, improving the breakdown voltage while maintaining existing electrical properties.
Article
Chemistry, Physical
Xiaozhi Bao, Tian Sun, Yan Liu, Chuan Xu, Weiliang Ma, Junpo Guo, Yun Zheng, Shivananju Bannur Nanjunda, Huating Liu, Zongyu Huang, Shaojuan Li, Shenghuang Lin, Guichuan Xing, Wencai Ren, Qiaoliang Bao, Huaiyu Shao
Summary: Photodetectors based on the graphene-Mo2C heterostructure exhibit high responsivity over a broad wavelength range from visible to infrared, due to enhanced light absorption and minimal resistance for photoexcited carriers in both materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Multidisciplinary Sciences
Myunghwan Kim, Sangin Kim, Soeun Kim
Summary: In this study, we propose two graphene-based optical free-space type modulators that achieve high modulation depth and low insertion loss. These modulators demonstrate outstanding performance at the optical communication wavelength.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Dorri Halbertal, Simon Turkel, Christopher J. Ciccarino, Jonas B. Hauck, Nathan Finney, Valerie Hsieh, Kenji Watanabe, Takashi Taniguchi, James Hone, Cory Dean, Prineha Narang, Abhay N. Pasupathy, Dante M. Kennes, D. N. Basov
Summary: The electronic and structural properties of atomically thin materials can be tuned by assembling them with an interlayer twist. In this study, the authors reveal surprising optical and electronic contrast in twisted double trilayer graphene and analyze the energetics of the unconventional lattice relaxation process. They demonstrate that this relaxation is non-local, leading to an energy gain in one domain of the moire lattice that is paid for by a relaxation in the other.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
B. Semenenko, B. C. Camargo, A. Setzer, W. Boehlmann, Y. Kopelevich, P. D. Esquinazi
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2020)
Article
Instruments & Instrumentation
L. Botsch, N. Raatz, S. Pezzagna, R. Staacke, R. John, B. Abel, P. D. Esquinazi, J. Meijer, S. Diziain
REVIEW OF SCIENTIFIC INSTRUMENTS
(2020)
Article
Materials Science, Multidisciplinary
Regina Ariskina, Michael Schnedler, Pablo D. Esquinazi, Ana Champi, Markus Stiller, Wolfram Hergert, R. E. Dunin-Borkowski, Philipp Ebert, Tom Venus, Irina Estrela-Lopis
Summary: In this study, Tunneling Atomic Force Microscopy (TUNA) was used to investigate the current-voltage characteristics of highly oriented graphite samples with different stacking orders. It was found that adjusting the model to consider surface band bending due to a finite contact potential allowed for quantitative agreement between simulated and measured tunnel spectra. This research reveals insights into the electronic properties of graphite surfaces with different stacking configurations.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Physics, Condensed Matter
Annette Setzer, Pablo D. Esquinazi, Olesya Daikos, Tom Scherzer, Andreas Poeppl, Robert Staacke, Tobias Luehmann, Sebastien Pezzagna, Wolfgang Knolle, Sergei Buga, Bernd Abel, Jan Meijer
Summary: The experiment showed that the presence of magnetic C centers in nitrogen-doped diamond crystals is responsible for the large hysteresis behavior observed, and reducing the concentration of these centers can completely suppress the phenomenon. Additionally, partial recovery of the hysteresis behavior was observed after annealing the samples at high temperatures in vacuum.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
Article
Chemistry, Physical
Annette Setzer, Pablo D. Esquinazi, Sergei Buga, Milena T. Georgieva, Tilo Reinert, Tom Venus, Irina Estrela-Lopis, Andrei Ivashenko, Maria Bondarenko, Winfried Boehlmann, Jan Meijer
Summary: In this study, we demonstrated that cutting diamond crystals with a laser can produce a magnetic ordered layer at the surface with a thickness of less than or similar to 20 nm. The ferromagnetic response was observed only when the crystals were cut along the (100) surface orientation. The magnetic order is attributed to the disordered graphite layer produced by the laser on the diamond surface, and it can be eliminated by chemical etching or moderate temperature annealing.
Article
Chemistry, Physical
Regina Ariskina, Markus Stiller, Christian E. Precker, Winfried Boehlmann, Pablo D. Esquinazi
Summary: Granular superconductivity at high temperatures can occur in graphite at certain two-dimensional stacking faults. A permanent current path was observed using magnetic force microscopy, and its position was found to drift with time. Scratches on the sample surface cause changes in the location of the current path and irreversible destruction of the remanent state at room temperature.
Article
Chemistry, Physical
Christian E. Precker, Jose Barzola-Quiquia, Mun K. Chan, Marcelo Jaime, Pablo D. Esquinazi
Summary: Despite decades of experimental studies and theoretical proposals, there is still a lack of overall interpretation for the complex behavior of magnetoresistance in multilayer graphene at high fields and broad temperature range. Stacking faults (SFs) contribute to the complexity in most thick enough multilayer graphene samples. A procedure is proposed to extract the SF contribution to the magnetoresistance measured at various temperatures and magnetic fields. The magnetoresistance behavior of some SFs resembles that of granular superconductors with a critical temperature of approximately 350 K, consistent with recent publications. The measurements were conducted on a multilayer graphene TEM lamella, contacting the edges of the two-dimensional SFs.
Article
Materials Science, Multidisciplinary
Amitesh Paul, Pablo D. Esquinazi, Carlos Ivan Zandalazini, Annette Setzer, Wolfgang Knolle
Summary: Manipulation and control of defects using an electron beam allows for defect engineering in layered materials. We investigated topologically stable helices in a [Dy(10 nm)/Tb(10 nm)](30) multilayer under MeV electron irradiation up to a maximum fluence of 9.58 x 10(18) e/cm(2). The electron irradiation resulted in defect-induced magnetic manipulation, increasing the blocking/freezing temperature of spin-frustrated interfaces by 4% and reducing the interfacial exchange bias coupling by 45%. This presents the opportunity to tailor spintronic devices through direct manipulation of pinning centers.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Richard Monge, Tom Delord, Nicholas V. Proscia, Zav Shotan, Harishankar Jayakumar, Jacob Henshaw, Pablo R. Zangara, Artur Lozovoi, Daniela Pagliero, Pablo D. Esquinazi, Toshu An, Inti Sodemann, Vinod M. Menon, Carlos A. Meriles
Summary: A broad effort is being made to understand and utilize the interaction between superconductors and spin-active color centers, with the goal of hybrid quantum devices and novel imaging techniques for superconducting materials. However, most work ignores the interplay between either system and the environment created by the color center host. In this study, a diamond scanning probe is used to investigate the spin dynamics of a single nitrogen-vacancy (NV) center near a superconducting film. The presence of the superconductor is found to increase the NV spin coherence lifetime, which may be attributed to a change in the electric noise caused by a redistribution of charge carriers due to the superconductor. These findings not only shed light on the dynamics of shallow NV spin coherence, but also offer new possibilities for noise spectroscopy and imaging of superconductors.
Article
Physics, Multidisciplinary
Markus Stiller, Pablo D. Esquinazi
Summary: Magnetic order induced by atomic lattice defects can be observed at room temperature in various non-magnetic hosts. Pure TiO2 (anatase) shows an ultrathin magnetic layer with perpendicular magnetic anisotropy at its surface when triggered by low-energy ion irradiation.
FRONTIERS IN PHYSICS
(2023)
Article
Physics, Condensed Matter
Jose Barzola-Quiquia, Maria Priscila Zelaya, Omar Espindola, Oscar Marin-Ramirez, David Comedi, Pablo D. Esquinazi, Monica Tirado
Summary: The magnetotransport properties of microstructured c- and a-plane ZnO thin films grown on a- and r-plane sapphire substrates were investigated. The contributions of grain and grain boundaries to electrical transport were verified through impedance spectroscopy. Photoluminescence measurements showed that both samples had maxima related to oxygen and zinc vacancies (V-Zn), which can contribute to ferromagnetic behavior, especially V-Zn. The resistance temperature dependence indicated the presence of two different mechanisms, with variable-range hopping dominating at temperatures T <= 30 K, and thermally activated transport dominating at higher temperatures. The magnetoresistance of all samples between 2 and 250 K was negative, indicating the presence of spin-scattering processes. Hall-effect measurements revealed that the samples were n-type, but had a small anomalous-like contribution related to different types of charge carriers.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Lukas Botsch, Pablo D. Esquinazi, Carsten Bundesmann, Daniel Spemann
Summary: In recent years, there has been a trend towards developing ferromagnetic materials by introducing defects into nonmagnetic host materials. However, the controversy remains regarding whether these materials are technologically relevant ferromagnets. Research on the emergence of a ferromagnetic phase upon ion irradiation shows that a bulk magnetic phase emerges in the high-energy regime, while an ultrathin magnetic layer forms at low ion energies.
Article
Materials Science, Multidisciplinary
Andreas Hentrich, Pablo D. Esquinazi
C-JOURNAL OF CARBON RESEARCH
(2020)
Article
Physics, Applied
V Zviagin, C. Sturm, P. D. Esquinazi, M. Grundmann, R. Schmidt-Grund
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Markus Stiller, Alpha T. N'Diaye, Hendrik Ohldag, Jose Barzola-Quiquia, Pablo D. Esquinazi, Thomas Amelal, Carsten Bundesmann, Daniel Spemann, Martin Trautmann, Angelika Chasse, Hichem Ben Hamed, Waheed A. Adeagbo, Wolfram Hergert
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.
