Article
Engineering, Electrical & Electronic
Xiaoling Li, Juexian Cao, Yanning Zhang
Summary: In this study, the transport properties of common groups (-CH3, -C6H5, -NH2, -OH) adsorbed on (7, 0)-CNT were systematically investigated using first-principles calculations. The results show that the adsorption of surface groups results in impurity states near the Fermi level, which limits the electrical transport properties and reduces the carrier mobility of CNTs. This research provides a valuable theoretical foundation for the fabrication of high-performance carbon-based sensor devices.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Katerina P. Hilleke, Eva Zurek
Summary: The study explains the structure and stability of metal hydride phases using Density Functional Theory-Chemical Pressure (DFT-CP) method, revealing the reasons why certain elements adopt specific structure types and how internal pressure leads to the opening of H-24 polyhedra. The stability of phases is enhanced by filling the shared hydrogen network with additional atoms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Kim Eklund, Antti J. Karttunen
Summary: Nitrogen-doped carbon nanotubes (N-CNTs) hold promise in various applications, with this study using hybrid density functional theory and semiclassical Boltzmann transport theory to investigate the impact of different substitutional nitrogen doping configurations on the electrical conductivity of N-CNTs. The results show significant variations in conductivity and relative energies of different dopant configurations, providing insights for optimizing the electrical transport properties of N-CNTs.
Article
Chemistry, Multidisciplinary
Dipankar Saha, Shayan Angizi, Maryam Darestani-Farahani, Johnson Dalmieda, Ponnambalam Ravi Selvaganapathy, Peter Kruse
Summary: This study investigates the modulation of chemical and mechanical surface properties of molybdenum disulfide (MoS2) thin films using diazonium chemistry. Different strategies for surface passivation and modification were proposed and found to be effective. The results also showed that functionalization can lower the coefficient of friction, providing a pathway for dry lubricant materials with improved chemical stability and tunable conductivity.
Article
Materials Science, Multidisciplinary
Kun Du, Zhihua Xiong, Lei Ao, Lanli Chen
Summary: The novel gallium nitride (GaN) monolayer has been investigated for potential use in optoelectronic devices, showing stability in hydrogenation or fluorination and adjustable band gaps through chemical functionalization, leading to enhanced visible-light absorption in half-hydrogenated GaN monolayer. These results could guide the fabrication of optoelectronic devices based on GaN monolayer.
Article
Materials Science, Multidisciplinary
Lei Xiong, Wenbin Lai, Zhiqing Pan, Fang Liu
Summary: This study describes a novel and facile approach to graft hyperbranched poly(thiol ether-ester) onto multi-walled carbon nanotubes (MWCNTs) using thiol-yne click chemistry. Through various techniques, the covalent grafting between the polymeric chains and the carbon nanotubes was confirmed. The grafting significantly improved the dispersion stability of the MWCNTs in water, and the resulting MWCNTs-HPTEE showed oxidation responsiveness due to the presence of oxidizable thioether groups.
Article
Chemistry, Physical
Guojun Zhang, Yipin Lv, Xinru Wei, Yuan Yuan, Fangfang Wang, Jin Yong Lee, Baotao Kang
Summary: In recent years, the graphyne family has gained attention for its unique properties. Graphyne nanotubes, being a member of this family, are considered promising materials for various applications. However, their development is still in early stages, with most studies focusing on specific types of nanotubes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Polymer Science
Jingyue Xiao, Huigai Li, Munan Lu, Yuqiong Wang, Jin Jiang, Wengang Yang, Shuxuan Qu, Weibang Lu
Summary: Multi-scale rigid-soft material coating was used to enhance the interfacial shear strength (IFSS) of carbon fibers (CFs). Chitosan (CS) and carbon nanotubes (CNTs) were grafted onto the CFs surface, increasing the roughness and activity of the CFs surface and improving mechanical interlocking and chemical bonding. The modified CFs composites showed a 186.9% increase in IFSS (123.65 MPa) and a 26.79% increase in tensile strength compared to desized fibers. This strategy provides a valuable reference for obtaining high-performance CFs composites.
Article
Chemistry, Physical
Barada Prasanna Sahoo, Diptikanta Das, Prasanta Rath, Shanta Chakrabarty, Sudesna Roy, Kalyani Mohanta
Summary: This paper presents a new method to modify the surfaces of pristine multiwall carbon nanotubes (CNTs) by acid treatment, silanization, and grafting of AlN nano-particles, which enhances the dispersion uniformity, wettability, and matrix-reinforcement bonding strength in liquid metallurgy processed aluminium matrix composites (AMCs). The effectiveness of AlN nano-particle grafting is demonstrated through various characterization techniques, such as dispersion stability test, spectroscopy analysis, X-ray diffraction, and electron microscopy. The results confirm the improved dispersion stability, covalent attachment of AlN nano-particles onto CNT surfaces, and the existence of AlN on the CNT sidewalls.
SURFACES AND INTERFACES
(2023)
Review
Biotechnology & Applied Microbiology
Priyank Purohit, Akanksha Bhatt, Ravi K. Mittal, Magda H. Abdellattif, Thoraya A. Farghaly
Summary: Polymer grafting is a technique to improve the morphology and properties of polymers. By creating copolymers or grafting, the physicochemical properties of polymers can be further modified. This review discusses various chemical approaches for polymer grafting, such as free radical reactions, click reactions, amide formation, and alkylation. The review also covers the importance of the graft-to approaches and their application in different fields.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Constantin D. Sahm, Anna Ciotti, Eric Mates-Torres, Vivek Badiani, Kamil Sokolowski, Gaia Neri, Alexander J. Cowan, Max Garcia-Melchor, Erwin Reisner
Summary: Sunlight-driven CO2 reduction to renewable fuels is a promising strategy in a circular economy. Colloidal quantum dots (QDs) have been explored as light absorbers that can enhance CO2 reduction through surface modification. This study shows that dithiols can activate the QD surface for CO2 reduction and suppress the competing H2 evolution reaction. Furthermore, by immobilizing a co-catalyst, a longer dithiol can accelerate CO2 reduction. The findings suggest that engineering the particle's chemical environment with dithiol capping ligands can enhance CO2 reduction catalysis.
Article
Energy & Fuels
Luna Ruan, An Pei, Jianhua Liao, Li Zeng, Guangrong Guo, Kai Yang, Qin Zhou, Ning Zhao, Lihua Zhu, Bing Hui Chen
Summary: Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized via covalent functionalization, and different metal catalysts were prepared by liquid chemical reduction for furfural hydrogenation evaluation. Results showed that PdNiCo/N-CNTs exhibited superior selectivity and catalytic activity, attributed to its unique alloy nanostructure and electronic synergy effect.
Article
Energy & Fuels
Denis F. Alvarenga, Mario Guimara, Mayara C. G. Santos, Paula S. Pinto, Thiago H. R. da Cunha, Matheus C. Dias, Rodrigo L. Lavall, Paulo F. R. Ortega
Summary: In recent years, supercapacitors (SCs) using redox electrolytes have been recognized as a simple technology to enhance the energy density of the devices. However, there is a lack of research focusing on obtaining flexible and foldable electrode materials with high capacity to adsorb redox additives from the electrolyte for integrable devices. In this study, buckypapers (BPs) composed of few-walled carbon nanotubes (FWCNT) and different cellulose nanofibrils (CNF) were prepared as flexible and foldable redox SC electrodes. It was found that CNFs can optimize the properties of BPs and improve their performance in terms of hydrophilicity, mechanical strength, electrical conductivity, and electrochemical performance.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Biochemistry & Molecular Biology
Ibwanga S. Mosse, Venkateswara Rao Sodisetti, Christopher Coleman, Siphephile Ncube, Alvaro S. de Sousa, Rudolph M. Erasmus, Emmanuel Flahaut, Thomas Blon, Benjamin Lassagne, Tomas Samoril, Somnath Bhattacharyya
Summary: The degree of chemical functionalization associated with molecular magnet loading can be utilized for controlled tuning the magnetic properties of a CNT-lanthanide hybrid complex. This controlled loading has led to a significant change in the nanotube intrinsic diamagnetism, showing antiferromagnetic coupling with increase in the Weiss temperature with respect to increased loading. This indicates the potential for developing novel spintronic technologies through a carbon-based hybrid material.
Article
Chemistry, Multidisciplinary
Jianlin Jiang, Zhen Liu, Shuaijun Pan, Xinnian Xia, Bing Qin, Yang Hu, Xuxu Wang, Jiamin Lan, Yu Gu, Encai Ou, Weijian Xu, Joseph J. Richardson, Rui Guo
Summary: Metal-phthalocyanines are catalytically active materials widely used in energy conversion and storage fields. In this study, the electrocatalytic origins of cobalt-phthalocyanine molecular catalysts were elucidated using experimental and computational methods. The electronic properties were fine-tuned at the atomic level. The aminated cobalt phthalocyanine-based electrocatalysts showed high activity and selectivity in oxygen reduction and evolution reactions, and exhibited exceptional kinetic current density and cycling stability in Zn-air batteries.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Rekha Chaudhary, Prachi Jhanwar, Prasantha R. Mudimela
Summary: This study focuses on the design and simulation of a hinge structure-based graphene oxide nanoelectromechanical (NEM) switch. Finite Element Modeling (FEM) using COMSOL Multiphysics was performed to analyze different design parameters. The results show that beam length has a negative correlation with pull-in voltage and von Mises stress, while beam thickness and air gap have a positive correlation. A long and thin suspended beam requires low pull-in voltage and experiences less von Mises stress. Von Mises stress is especially significant at beam edges, perforation corners, and the beam-top electrode interface due to the edge termination effect.
IETE JOURNAL OF RESEARCH
(2023)
Review
Engineering, Electrical & Electronic
Rekha Chaudhary, Prasantha R. Mudimela
Summary: This article reviews the recent advancements in demand, operating principles, design parameters, materials, and existing technologies of RF M/NEMS switches. The performance parameters of different works are presented and compared, and the methods of lowering the pull-in voltage are also discussed.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2023)
Article
Clinical Neurology
Ana Filipa Geraldo, Cesar Augusto P. F. Alves, Aysha Luis, Domenico Tortora, Joana Guimaraes, Daisy Abreu, Sofia Reimao, Marco Pavanello, Patrizia de Marco, Marcello Scala, Valeria Capra, Rui Vaz, Andrea Rossi, Erin Simon Schwartz, Kshitij Mankad, Mariasavina Severino
Summary: This study investigates the neuroimaging findings and longitudinal evaluation of familial cerebral cavernous malformations (FCCM) in children. It reveals that the incidence and risk factors of symptomatic hemorrhage in children with FCCM are comparable to those in adults. Imaging features at the first brain MRI may help predict future symptomatic hemorrhage.
Article
Biochemistry & Molecular Biology
Nayara Balaba, Silvia Jaerger, Dienifer F. L. Horsth, Julia de O. Primo, Jamille de S. Correa, Carla Bittencourt, Cristina M. Zanette, Fauze J. Anaissi
Summary: This study reported the synthesis of structured MgO using feedstock starch, citrus pectin, and Aloe vera leaf, which are abundant, low-cost, and non-toxic green fuels. The formed oxides exhibited high porosity and were evaluated for their antimicrobial activity. Characterization techniques such as EDXRF, XRD, FTIR, and SEM were used to analyze the samples. The results showed that the sample morphology depended on the organic fuel used during the synthesis. The MgO-St, MgO-CP, and MgO-Av oxides showed effective antimicrobial activity against Staphylococcus aureus and Escherichia coli, as well as antifungal activity against Candida albicans.
Article
Chemistry, Multidisciplinary
Jiuxiang Zhang, Thibault Daniel Pierre Sohier, Michele Casula, Zhesheng Chen, Jonathan Caillaux, Evangelos Papalazarou, Luca Perfetti, Luca Petaccia, Azzedine Bendounan, Amina Taleb-Ibrahimi, David Santos-Cottin, Yannick Klein, Andrea Gauzzi, Marino Marsi
Summary: In the Dirac semimetal BaNiS2, the Dirac nodes can be moved along the Gamma-M symmetry line in reciprocal space by varying the concentration of adsorbed K atoms. This peculiar feature offers a promising tool for engineering Dirac states at surfaces, interfaces, and heterostructures, as demonstrated by first-principles calculations considering the effect of charge transfer gap.
Article
Chemistry, Physical
Nayara Balaba, Dienifer F. L. Horsth, Jamille de S. Correa, Julia de O. Primo, Silvia Jaerger, Helton J. Alves, Carla Bittencourt, Fauze J. Anaissi
Summary: Three synthesis routes using different natural polysaccharides as fuels and complexing agents were described for obtaining MgO. XRD identified the formation of a monophasic periclase structure for the three samples. BET analysis showed a significant difference in textural properties, with the highest pore volume and surface area obtained for MgO-St. The synthesized magnesium oxides displayed the ability to reduce the amount of Cu2+ ions in wastewater.
Article
Materials Science, Multidisciplinary
S. Eremeev, O. De Luca, P. M. Sheverdyaeva, L. Ferrari, A. Matetskiy, G. Di Santo, L. Petaccia, C. Crovara, T. Caruso, M. Papagno, R. G. Agostino, Z. S. Aliev, P. Moras, C. Carbone, E. Chulkov, D. Pacile
Summary: Topological insulators with the Fermi level on the Dirac surface state are actively studied. In this study, we investigate the electronic structure of SnBi2Te4 crystal using angle-resolved photoemission spectroscopy and first-principles calculations. Our results show that away from the Brillouin zone center, bulk bands energetically overlap with the Dirac cone at the Fermi level, leading to unwanted contributions to the material's transport properties. Comparisons between experimental and simulated band structures considering defects provide insights on the limitations in the description of the material.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Physical
Julia de Oliveira Primo, Dienifer F. L. Horsth, Nayara Balaba, Polona Umek, Fauze J. Anaissi, Carla Bittencourt
Summary: This study reports on the synthesis of blue pigments of ZnAl2O4:M (M = Co2+ and Co2+/Nd3+) using recycled metallic aluminum and their reflective properties of Near-infrared radiation. The pigments were characterized and the wettability of coatings containing the pigments was evaluated. The prepared compounds show high near-infrared solar reflectance and have the potential to be energy-saving color pigments for coatings.
Article
Oncology
Marzia Ognibene, Patrizia De Marco, Loredana Amoroso, Davide Cangelosi, Federico Zara, Stefano Parodi, Annalisa Pezzolo
Summary: Neuroblastoma (NB), a tumor affecting the peripheral sympathetic nervous system, has unknown mechanisms determining its progression. This study found that loss of chromosome 10q is associated with poor prognosis in NB patients. Additionally, it identified a cluster of 75 deleted genes, including CCSER2, whose low expression is correlated with worse survival.
Article
Oncology
Marzia Ognibene, Marcello Scala, Michele Iacomino, Irene Schiavetti, Francesca Madia, Monica Traverso, Sara Guerrisi, Marco Di Duca, Francesco Caroli, Simona Baldassari, Barbara Tappino, Ferruccio Romano, Paolo Uva, Diego Vozzi, Cristina Chelleri, Gianluca Piatelli, Maria Cristina Diana, Federico Zara, Valeria Capra, Marco Pavanello, Patrizia De Marco
Summary: In this study, rare variants of the RNF213 gene were investigated as potential genetic modifiers of Moyamoya syndrome (MMS) phenotype in a pediatric cohort of patients. Next-generation sequencing revealed that RNF213 does not modify the risk of Moyamoya occurrence in MMS patients. Instead, the loss of neurofibromin 1, encoded by the NF1 gene, is likely responsible for the excessive proliferation of vascular smooth muscle cells leading to arterial stenosis. Further studies are needed to confirm these findings and identify other genetic factors in MMS pathogenesis.
Article
Nanoscience & Nanotechnology
Felix Carrascoso, Hao Li, Jose M. Obrero-Perez, Francisco J. Aparicio, Ana Borras, Joshua O. Island, Angel Barranco, Andres Castellanos-Gomez
Summary: By using an adamantane plasma polymer pinning layer, we achieve unprecedented crystal strains of 2.8% in monolayer molybdenum disulfide. The strain gauge factors for the A and B excitons of monolayer MoS2 are reported as -99.5 meV/% and -63.5 meV/%, respectively, with a 50 nm adamantane capping layer. Photoluminescence and Raman measurements on the same samples confirm these results. Overall, our study demonstrates that adamantane polymer is an exceptional capping layer for transferring substrate-induced strain to a 2D layer and achieving higher levels of crystal strain.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Analytical
Selene Acosta, Juan Casanova-Chafer, Eduard Llobet, Axel Hemberg, Mildred Quintana, Carla Bittencourt
Summary: The properties of carbon nanotubes can be modified by adding metal nanoparticles to their surface. This is achieved by first functionalizing the CNTs with oxygen groups using plasma, followed by decorating them with Ni-Pd bimetallic nanoparticles using plasma sputtering deposition. The oxygen groups act as nucleation sites for the growth of the bimetallic nanoparticles. The resulting Ni-Pd nanoparticle-decorated CNTs are then evaluated for their sensing capabilities in detecting toluene.
Article
Biochemistry & Molecular Biology
Marzia Ognibene, Patrizia De Marco, Loredana Amoroso, Martina Fragola, Federico Zara, Stefano Parodi, Annalisa Pezzolo
Summary: Chromosomal instability (CIN) is a hallmark of most human cancers and can lead to losses or gains of chromosomes. This study evaluated the prognostic role of CIN in NB patients at diagnosis and found that high CIN values are negatively associated with survival of NB patients.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Jordan Cole, Zoe Henderson, Andrew G. Thomas, Christopher Castle, Adam J. Greer, Christopher Hardacre, Mattia Scardamaglia, Andrey Shavorskiy, Karen L. Syres
Summary: In this study, a thin film of superbasic ionic liquid (SBIL) was prepared on rutile TiO2 and its performance upon exposure to CO2 and H2O was investigated. The results showed that the competitive absorption of CO2 and H2O in the SBIL thin film depended on the sampling depth, with a higher concentration of CO2 absorbed in the bulk layers and more H2O adsorbed/absorbed at the surface. Furthermore, the reversible absorption of CO2 in the thin film was largely attributed to reactions at the surface, which differed from the fully reversible CO2 reaction observed in bulk ionic liquids (ILs).
JOURNAL OF PHYSICS-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pietro Biasin, Mandana Safari, Elena Ghidorsi, Stefania Baronio, Mattia Scardamaglia, Alexei Preobrajenski, Stefano de Gironcoli, Stefano Baroni, Erik Vesselli
Summary: The recent interest in 2D boron polymorphs has raised debates on the stability of honeycomb phases, but the synthesis of stable, single, and homogeneous 2D boron phases remains a challenge. The difference in electronic configuration between boron and carbon leads to the formation of multi-center covalent bonds, making it difficult to achieve homogeneous single phases. In this study, evidence is provided for the reversible formation of well-ordered honeycomb borophane through hydrogenation of the honeycomb boron phase on Al(111) substrate.
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.