Article
Chemistry, Multidisciplinary
Nitant Gupta, John M. Alred, Evgeni S. Penev, Boris Yakobson
Summary: The study found a linear relationship between the strength of carbon nanotube bundles and two essential control parameters. Geometrical perturbations caused by length distribution and bundle dimensions result in a net stress concentration effect, but do not influence scaling behavior.
Article
Chemistry, Physical
Xu Li, Chunsheng Pu, Yun Bai, Feifei Huang
Summary: This paper systematically studies the foam-stabilizing performance and mechanism of different surfactant/MWCNT foam systems. The results show that MWCNT modified by the cationic surfactant CTAB exhibits better foam stability, slows down film drainage, increases foam viscosity, and enhances foam stability. As a result, CTAB/MWCNT stabilized foams have potential for conformance control in heterogeneous reservoirs.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Krassimira Ilieva-Makulec, Anna Augustyniuk-Kram, Izabella Olejniczak, Kamil Karaban, Marek Nowicki, Tomasz Runka, Andrzej Kulczycki, Jaroslaw Kaluzny
Summary: The study found that multiwalled carbon nanotubes had a potential impact on soil organisms, especially with higher sensitivity in nematodes. Contamination by CNTs significantly affected the dynamics and diversity of soil fauna and microbial communities, potentially leading to long-term consequences for soil functioning and nutrient cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Oscar Jover, Alberto Martin-Jimenez, Hannah M. Franklin, Ryan M. Koenig, Jose I. Martinez, Nazario Martin, Koen Lauwaet, Rodolfo Miranda, Jose M. Gallego, Steven Stevenson, Roberto Otero
Summary: This study characterizes the adsorption, self-assembly, and electronic structure of [5,5]-C-90 fullertube molecules on different noble metal surfaces using scanning tunneling microscopy and spectroscopy. The results show that the shape of the molecular orbitals of the adsorbed fullertubes matches the theoretical calculations, and some of the molecular orbitals are influenced by the quantum confinement imposed by the hemifullerene caps. These findings provide a conceptual framework for the design and understanding of custom fullertube molecules.
Article
Nanoscience & Nanotechnology
Vasuki Durairaj, Panpan Li, Touko Liljestrom, Niklas Wester, Jarkko Etula, Ilona Leppanen, Yanling Ge, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen
Summary: Four types of nanocellulosic materials with different functional groups were used to disperse multiwalled carbon nanotubes, resulting in composite electrodes with excellent stability and electrochemical properties in different electrolytes. Anionic fibrillar nanocellulosic composites showed strong electrostatic and physical enrichment effects, while denser crystalline composites did not exhibit such behavior. This study provides insights for developing customizable nanocellulose/carbon nanomaterial hybrid platforms for various electrochemical applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Paper & Wood
Vasuki Durairaj, Touko Liljestrom, Niklas Wester, Peter Engelhardt, Sami Sainio, Benjamin P. Wilson, Panpan Li, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen
Summary: This study comprehensively investigates the influence of nanocellulosic material properties on the electroanalytical performance of nanocellulose/CNT hybrid electrodes. By manipulating the functionalization and geometry of cellulose nanocrystals, cellulose nanofibers, and TEMPO-oxidized cellulose nanofibers, the optimal combination for hybrid electrode performance is determined. This research demonstrates for the first time the tunability of nanocellulose/CNT hybrid electrodes towards different biomolecules through the selection of nanocellulosic materials.
Article
Chemistry, Physical
Hyunjin Kim, Hyejin Yang, Suriyakumar Dasarathan, Doohun Kim, Joong Tark Han
Summary: This study presents a method to enhance the electrical performance of CNT films by controlling the wettability of LMWCNT films and the electrical conductivity of the Cu plating solution. Thermal deoxygenation was used to modify the CNT surface, providing high conductivity and hydrophilicity for uniform Cu electrodeposition in an aqueous electrolyte. The results show that Cu nucleates from inside the CNT film and grows on the surface, forming a densely packed CNT-Cu composite.
Article
Materials Science, Composites
Ashish Kaushal, Vishal Singh
Summary: In this study, the mechanical, DC conductivity, and electromagnetic interference (EMI) shielding properties of multiwalled carbon nanotubes (MWCNTs) and carbon fiber reinforced polypropylene (CNC) nanocomposites were investigated. The results showed that the combination of CF and MWCNT improved the tensile strength and modulus of the nanocomposites, and the percolation behavior improved the DC electrical conductivity. The CNC nanocomposites exhibited high EMI shielding effectiveness in the X-band for a 2 mm thick sample, and efforts have been made to develop a compatible EMI shielding material using multiple fillers.
POLYMER COMPOSITES
(2022)
Article
Nanoscience & Nanotechnology
Zhizhu Yao, Huiling Feng, Kedong Shang, Xingqiao Deng, Tingting Yang
Summary: This study presents a skin-like flexible strain sensor with a multiwalled carbon nanotube/polydimethylsiloxane composite film. The sensor features a unique nanostructure, resembling spider legs, lotus roots, and lotus leaves, which leads to high sensitivity, wide range, and superhydrophobic ability. The sensor successfully detects sound waves, speech, and human motion, showing great potential in various applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Leysan Kh Galiakhmetova, Elena A. Korznikova, Aleksey A. Kudreyko, Sergey Dmitriev
Summary: Aligned carbon nanotube bundles exhibit negative lateral thermal expansion under lateral loading and heating conditions. The coefficient of thermal expansion is practically constant up to 1500 K and does not depend on biaxial lateral compression. This anomalous behavior is explained by the elliptization of the CNT cross section and bending of the CNT walls by thermal fluctuations.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Elena A. Korznikova, Kun Zhou, Leysan Kh Galiakhmetova, Elvira G. Soboleva, Aleksey A. Kudreyko, Sergey Dmitriev
Summary: Carbon nanotubes have high potential in various technologies and their structure and elastic properties under compression were analyzed using a chain model. The study identified four compression stages and calculated the elastic constants, contributing to the design of carbon nanomaterials with enhanced properties.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Xuan Li, Wei Wang, Wenhua Cai, Hao Liu, Haihui Liu, Na Han, Xingxiang Zhang
Summary: This study utilized PVDF and PLLA in the triboelectric layers of hybrid nanogenerators, introduced MXenes and MWCNTs-COOH as conductive nano fillers, and performed finite element simulations to determine optimal parameters. A high power density HNG was constructed as a result. The study proposed an effective method to improve the output performance of tribopiezoelectric nanogenerators and fabricated a wearable portable electronic device based on HNGs for human interaction with virtual reality.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Mechanical
Ayub Karimzad Ghavidel, Mohammad Zadshakoyan, Mohammad Arjmand
Summary: The study investigated the mechanical behaviors of CNT bundles through a 3D simulation approach and found that hydrodynamic pressure drag force plays a significant role in exerting notable stresses to the CNTs' body. The research also revealed that the utilization of strong fields can dissociate thinner bundles from the main one, destruct the structure of CNTs, and weaken their unique mechanical strength.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Construction & Building Technology
Xu Cheng, Wei Tian, Jinfeng Gao, Li He, Jiahang Zhang, Xiaohui Wang
Summary: This study prepared cement mortars with different contents and sizes of multiwalled carbon nanotubes (MWCNTs) using surfactants and ultrasonic dispersion. The effects of MWCNT content, diameter, and length on the electrical conductivity and self-inductive piezoresistive rate of the cement mortar were investigated. The results showed that the conductive percolation threshold occurred at approximately 0.1 wt% MWCNT content. The highest electrical conductivity was observed for MWCNTs with diameters of 10-20 nm at a content of 0.1 wt%, reaching 112% and 128.3% compared to MWCNTs with diameters of 20-40 nm and 40-60 nm, respectively. The fractional change in resistivity was most significant at a content of 0.75 wt% MWCNTs, reaching 14.27%. Adding small-diameter MWCNTs can maximize the sensitivity of electrical resistance to compressive stress in cement mortar.
MAGAZINE OF CONCRETE RESEARCH
(2022)
Article
Computer Science, Information Systems
Yidan He, Zhiwei Li, Shuyu Mao, Fangyuan Zhan, Xianlong Wei
Summary: Researchers have successfully fabricated a vacuum transistor based on carbon nanotubes using microfabrication technologies, overcoming the issues of unstable electron emission, poor uniformity, and high vacuum requirement. The carbon nanotube vacuum transistor exhibits a high ON/OFF current ratio and good gate controllability.
Article
Materials Science, Multidisciplinary
Sheng Zhu, Yuechao Wang, Jinshu Zhang, Jian Sheng, Feng Yang, Meng Wang, Jiangfeng Ni, Hong Jiang, Yan Li
Summary: By studying the structure-property correlation of KxMnO2, researchers have found that the pseudocapacitive performance can be improved by tuning its structure. They have designed a K0.25MnO2 material with high capacitance and desirable rate capability. Operando Raman spectroscopy confirms that the structural evolution of [MnO6] octahedron is responsible for its superior pseudocapacitive behavior.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jianshuo Zhou, Li Ren, Haitao Li, Xiaohan Cheng, Zipeng Pan, Zhiyong Zhang, Li Ding, Lian-Mao Peng
Summary: Aligned carbon nanotube (ACNT) array is an excellent channel material for building radio frequency (RF) field-effect transistors (FETs) with an ultra-high frequency. In this study, ACNT based RF FETs with record high dc performance and f(T) and f(MAX) frequencies up to 376 GHz and 318 GHz were demonstrated, indicating their potential for actual RF performance in the THz regime.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Maguang Zhu, Peng Lu, Xuan Wang, Qian Chen, Huiping Zhu, Yajie Zhang, Jianshuo Zhou, Haitao Xu, Zhengsheng Han, Jianwei Han, Rui Chen, Bo Li, Lian-Mao Peng, Zhiyong Zhang
Summary: Research has found that carbon nanotube field-effect transistors exhibit high radiation tolerance, making them suitable for use in high-energy radiation environments.
Article
Nanoscience & Nanotechnology
Yanxia Lin, Yu Cao, Haozhe Lu, Chenchen Liu, Zirui Zhang, Chuanhong Jin, Lian-Mao Peng, Zhiyong Zhang
Summary: In this study, a process is developed to clean residual polymers and release stress by wet etching the Si/SiO2 substrate surface underneath the aligned semiconducting carbon nanotube (ACNT) film. Top-gated ACNT field-effect transistors (FETs) fabricated with this process exhibit significant improvement in terms of saturation on-current, peak transconductance, hysteresis, and subthreshold swing. These improvements are attributed to the increase in carrier mobility after the substrate surface refreshing process.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Editorial Material
Chemistry, Multidisciplinary
Jillian M. Buriak, Deji Akinwande, Natalie Artzi, C. Jeffrey Brinker, Cynthia Burrows, Warren C. W. Chan, Chunying Chen, Xiaodong Chen, Manish Chhowalla, Lifeng Chi, William Chueh, Cathleen M. Crudden, Dino Di Carlo, Sharon C. Glotzer, Mark C. Hersam, Dean Ho, Tony Y. Hu, Jiaxing Huang, Ali Javey, Prashant V. Kamat, Il-Doo Kim, Nicholas A. Kotov, T. Randall Lee, Young Hee Lee, Yan Li, Luis M. Liz-Marzan, Paul Mulvaney, Prineha Narang, Peter Nordlander, Rahmi Oklu, Wolfgang J. Parak, Andrey L. Rogach, Mathieu Salanne, Paolo Samori, Raymond E. Schaak, Kirk S. Schanze, Tsuyoshi Sekitani, Sara Skrabalak, Ajay K. Sood, Ilja K. Voets, Shu Wang, Shutao Wang, Andrew T. S. Wee, Jinhua Ye
Article
Chemistry, Multidisciplinary
Kun Wang, Guang-Jie Xia, Tianhui Liu, Yulong Yun, Wu Wang, Kecheng Cao, Fenfa Yao, Xin Zhao, Boyuan Yu, Yang-Gang Wang, Chuanhong Jin, Jiaqing He, Yan Li, Feng Yang
Summary: This study successfully synthesized ultrathin W2C and Mo2C nanowires confined in single-walled carbon nanotubes (SWCNTs) using a host-guest assembly strategy. The strong interaction between W/Mo and SWCNTs resulted in the anisotropic growth of carbide nanowires along a specific crystal direction, accompanied by lattice strain and electron donation to SWCNTs. The M2C@SWCNTs (M = W, Mo) catalysts constructed a delocalized and electron-enriched SWCNT surface, leading to highly selective semihydrogenation of alkynes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Meiling Li, Chexin Li, Xiaoguang Xu, Mengxi Wang, Zhiqiang Zhu, Kangkang Meng, Bin He, Guoqiang Yu, Youfan Hu, Lian -Mao Peng, Yong Jiang
Summary: This research demonstrates a type of nonvolatile, low power dissipation, and programmable flexible spin logic device based on spin-orbit torque. The device has stable performance and the magnetization switching ratio does not change after bending 100 times. It can realize five Boolean logic gates and can be transferred to various substrates while maintaining high performance. The flexible spin logic device has applications in wearable electronics.
Article
Multidisciplinary Sciences
Jianfeng Jiang, Lin Xu, Chenguang Qiu, Lian-Mao Peng
Summary: The IRDS predicts that the scaling of silicon-based MOSFETs will stop at 12 nm and the ultimate supply voltage will not decrease to less than 0.6 V. Two-dimensional indium selenide (InSe) has been explored as a potential channel material for further miniaturization of electronic devices, but no 2D semiconductor-based FETs have shown better performance than silicon FETs. In this study, a FET with 2D InSe as the channel material is reported, operating at 0.5 V with record high transconductance and surpassing the performance of silicon FETs. Yttrium-doping-induced phase-transition method is developed for making ohmic contacts with InSe and the InSe FET is scaled down to 10 nm in channel length. Low subthreshold swing and drain-induced barrier lowering are achieved in the InSe FETs, as well as low contact resistance and smaller energy-delay product than predicted for silicon.
Article
Chemistry, Multidisciplinary
Sheng Zhu, Xiaoxin Yang, Yixi Yao, Xinrui Zhang, Lan Li, Xiao Wang, Gaoyi Han, Yan Li
Summary: Carbon nanotubes are used to encapsulate and enhance the electrical properties of redox-active polyoxometalate molecular clusters, resulting in improved dispersion and capacity. This hybrid material achieves a high specific capacity of 328.6 F g(-1) at 10 mV s(-1) and retains 82.1% capacity at 500 mV s(-1). The assembled supercapacitor exhibits a maximum energy density of 33.4 Wh kg(-1) and long-term stability with 91.3% capacity retention over 10,000 cycles. This study highlights the potential of redox-driven encapsulation strategies in developing high-performance energy storage materials.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Physical
Xue Zhao, Ningfei Gao, Zeyao Zhang, Qidong Liu, Jian Sheng, Yijie Hu, Ruoming Li, Haitao Xu, Lianmao Peng, Yan Li
Summary: The selective growth of semiconducting single-walled carbon nanotubes (s-SWCNTs) is achieved using CO as both catalyst reductant and carbon feedstock, along with bimetallic catalysts and quartz substrates. The CO-based process demonstrates feasibility and universality, resulting in horizontally aligned s-SWCNT arrays with high content (>97%) and potential for scalable fabrication of CNT-based devices.
Article
Engineering, Electrical & Electronic
Yanxia Lin, Yu Cao, Sujuan Ding, Panpan Zhang, Lin Xu, Chenchen Liu, Qianlan Hu, Chuanhong Jin, Lian-Mao Peng, Zhiyong Zhang
Summary: Aligned semiconducting carbon nanotubes have the potential to be an alternative to silicon in scaled field-effect transistors (FETs) due to their easy miniaturization and high energy efficiency. Researchers have successfully fabricated aligned carbon nanotube FETs at the same dimensions as low-node silicon technology, demonstrating size and electronic performance superior to silicon transistors. By introducing a full-contact structure, nanotube FETs with scaled contacted gate pitch comparable to the 10 nm silicon technology node have been created, exhibiting higher carrier mobility and Fermi velocity.
NATURE ELECTRONICS
(2023)
Article
Chemistry, Physical
Sheng Zhu, Zeyao Zhang, Jian Sheng, Guodong Jia, Jiangfeng Ni, Yan Li
Summary: Free-standing single-walled carbon nanotube films with a three-dimensional porous structure are prepared and applied as current collectors for flexible supercapacitors, showing advantages over conventional metal foil collectors. These films exhibit high mass loading efficiency, outstanding mechanical robustness, and excellent anti-corrosion properties. The electrochemical performance of the SWCNFs as current collectors is superior in terms of specific capacitance, rate capability, and cycling performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Lian-Mao Peng
Summary: Semiconducting single-walled carbon nanotubes (CNTs) have ideal properties for constructing transistors, surpassing the limits of silicon. CNT technology also enables the development of large-area and flexible electronic applications, and low-temperature processing allows for monolithic 3D integration of logic and memory devices.
Article
Chemistry, Multidisciplinary
Shaochuang Chen, Yuguang Chen, Haitao Xu, Min Lyu, Xinrui Zhang, Zhen Han, Haoming Liu, Yixi Yao, Chi Xu, Jian Sheng, Yifan Xu, Lei Gao, Ningfei Gao, Zeyao Zhang, Lian-mao Peng, Yan Li
Summary: This study presents a strategy of synthesizing high-quality single-walled carbon nanotubes (SWCNTs) using coal as the carbon source and Co-Ni as the catalyst, and demonstrates their application in fabricating field effect transistors (FETs) after one-step purification. This efficient and feasible transformation of coal into SWCNTs not only contributes to the utilization of natural resources, but also shows great potential in the field of green carbon technology.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Shaochuang Chen, Yuguang Chen, Haitao Xu, Min Lyu, Xinrui Zhang, Zhen Han, Haoming Liu, Yixi Yao, Chi Xu, Jian Sheng, Yifan Xu, Lei Gao, Ningfei Gao, Zeyao Zhang, Lian-mao Peng, Yan Li
Summary: The strategy of synthesizing SWCNTs using coal as the carbon source has been developed for the fabrication of high-performance FETs. Coal serves as a superior carbon source to graphite with higher yield and better selectivity towards smaller-diameter SWCNTs. The direct sorting of as-prepared SWCNTs without pre-purification based on conductivity and diameter demonstrates an efficient way of utilizing natural resources and presents great potential in future practical applications.
MATERIALS HORIZONS
(2023)
