Article
Mathematics, Applied
Naeem Ur Rehman, Syed Tayyab Hussain, Asim Aziz
Summary: The addition of nanoparticles has significantly enhanced the heat transfer capabilities of fluids. This study investigates the effects of carbon nanotubes on the pulsatile flow and heat transfer characteristics of viscous fluid, taking into account thermal radiation effects. It is found that single-walled carbon nanotubes provide higher velocity and temperature distribution compared to multi-walled carbon nanotubes.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2023)
Article
Chemistry, Physical
Dmitry Levshov, Marina Avramenko, Maksiem Erkens, Huy-Nam Tran, Thi Thanh Cao, Van Chuc Nguyen, Emmanuel Flahaut, Valentin N. Popov, Ahmed-Azmi Zahab, Jean-Louis Sauvajol, Raul Arenal, Wim Wenseleers, Sofie Cambre, Matthieu Paillet
Summary: Measuring electronic Raman scattering (ERS) has become a efficient method for structural characterization of metallic single-wall carbon nanotubes (SWCNT), but its application to other types of SWCNT-based structures, such as double-wall carbon nanotubes (DWCNT), is not well studied. In this work, the authors combine electron diffraction, Rayleigh and Raman spectroscopies to investigate the ERS process in 21 individual DWCNTs with different electronic configurations. They observe partial suppression of ERS intensity in DWCNTs compared to SWCNTs, mainly due to dielectric screening of Coulomb interactions. Based on their experimental findings, the authors propose an adapted method for structural identification of DWCNT samples from ERS data, which can be applied to characterize emerging 1D VDW heterostructures based on metallic SWCNTs.
Article
Green & Sustainable Science & Technology
Fuxi Peng, Yeji Lim, Boran Kim, Hyun-Soo Kim, Zhenyu Li, Zuowan Zhou, Jinyang Li, Won-Hee Ryu
Summary: Three-dimensional hierarchical carbon nanotubes/graphene (CNTs/Gr) bundles serve as mechanically durable free-standing electrodes for high-performance lithium-oxygen batteries (LOBs), exhibiting excellent mechanical strength and electrochemical stability.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Zhiliang Pan, Yi Tao, Yang Zhao, Matthew L. Fitzgerald, James R. McBride, Lei Zhu, Deyu Li
Summary: The contact thermal resistance between individual boron nitride nanotubes is largely determined by reflection of ballistic phonons, but can be influenced by the presence of a poly(vinylpyrrolidone) interlayer. The interlayer can either enhance or reduce the contact thermal resistance by converting the transport mechanism from ballistic phonon dominated to diffusion through the interlayer. This study provides insights into the design of high thermal conductivity boron nitride nanotube-polymer composites.
Article
Energy & Fuels
Pu Cheng, Dianliang Cao, Yaodong Ma, Kai Sun, Yiding Li, Yonggang Zhao, Dequan Liu, Deyan He
Summary: In this study, hierarchical hollow carbon microtubes (CMTs) were prepared by carbonization of willow catkins and coated on a commercialized separator for high-performance lithium-sulfur batteries (LSBs). The CMTs-coated separator effectively inhibits the diffusion of polysulfides, improving the capacity and cycling performance of the battery.
Article
Energy & Fuels
Haiping Yang, Shuai Yan, Dingding Yao, Hao Luo, Kuo Zeng, Jun Li, Dian Zhong, Haoyu Xiao, Hanping Chen
Summary: This study conducted a novel photo-thermal catalytic pyrolysis of LDPE using a solar simulator and investigated the performance of four photothermal catalysts at different temperatures. The results showed that the NiTiAl catalyst produced a significant amount of carbon nanotubes (CNTs) and hydrogen at high temperatures. The introduction of irradiation and support component modulation improved the metal-support interaction, leading to enhanced CNTs growth and hydrogen evolution.
Article
Physics, Applied
Victor I. Kleshch, Vitali Porshyn, Pavel Serbun, Anton S. Orekhov, Rinat R. Ismagilov, Dirk Luetzenkirchen-Hecht, Alexander N. Obraztsov
Summary: Surface graphitization of needlelike diamond nanotips can be achieved by Joule heating, resulting in well-ordered graphene layers and better emission currents, making them promising for various applications.
APPLIED PHYSICS LETTERS
(2022)
Article
Construction & Building Technology
Maciej Szel, Magdalena Rajczakowska, Patryk Ruminski, Andrzej Cwirzen
Summary: This study investigates the effect of multi-wall carbon nanotubes on the structure of cracking patterns in cement pastes subjected to thermal loading. The results show that the addition of multi-wall carbon nanotubes can increase the compressive strength of cement and reduce the crack area and crack density at high temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xuan Du, Dan Ma, Yuefeng Zhang, Jianyi Wang, Qinggui Xiao, Bin Wang, Liangliang Tian, Jianmin Ma, Jinliang Zhuang
Summary: We developed a simple electrospun method to prepare TiO2 coaxial nanofiber (TCNFs)-modified Celgard separators for lithium-sulfur batteries, which demonstrated excellent electrochemical performance. The TCNF/Celgard separator exhibited high capacity and low capacity decay during cycling at different rates and temperatures. The hollow-structured TCNFs played a crucial role in trapping polysulfides and facilitating Li+ transfer, leading to the superior performance of the batteries.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sihan Zhao, Ryo Kitaura, Pilkyung Moon, Mikito Koshino, Feng Wang
Summary: This review summarizes experimental observations and theoretical perspectives related to interlayer interactions in 1D vdW moire superlattices, focusing on the unique optical features and physics in 1D DWNTs arising from the non-trivial strong interlayer coupling effect. Proposed and discussed are future directions and questions in probing the intriguing physical phenomena in 1D vdW moire superlattices, including correlated physics in different 1D moire systems beyond DWNTs.
Article
Chemistry, Physical
Congbiao Zhang, Ke Li, Jintao Dai, Xi Zhang, Rui Li, Jingyi Zou
Summary: The study successfully improved the cycling efficiency and energy density of Li-S batteries by preparing SiO2 nanotubes with a special structure, combined with carbon nanotube paper to fabricate a multifunctional interlayer that suppressed the polysulfide shuttle effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Junfeng Cheng, Suyu Wang, Siqian Tang, Jun Zhou, Zheng Cao, Dun Wu, Chunlin Liu, Yajie Li
Summary: This study demonstrates the locally controllable laser-induced pattern transfer between substrate and polymer film, as well as the realization of colorful laser-induced patterns on polymers based on this interfacial transfer technique using a carbon nanotubes (CNTs) substrate with high photothermal conversion effect. The study provides a positive approach for the industrialization of laser-induced colorful patterns on polymers.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
B. Q. Wang, S. H. Gong, X. C. Wang, J. F. Wu, F. Liu, J. P. Cheng
Summary: In this study, a series of NiCoO2@NiCo/CNT ternary composites were synthesized using the thermal reducibility of trisodium citrate and its hydrolyzate. By optimizing the conductivity and stability, the composite exhibited extremely high specific capacitance, excellent rate performance, and stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Shulong Wang, Liangliang Zhang, Jingjin Zhao, Min He, Yong Huang, Shulin Zhao
Summary: The study found that the GSH level significantly increases in tumor tissues, thus it can be used as an endogenous molecule for diagnosing and treating tumors. The Fe-Cu@PANI nanoparticles prepared in the study utilize the tumor microenvironment-induced properties to activate tumor photoacoustic imaging and photothermal therapy in vivo, enhancing the efficiency of treatment.
Article
Chemistry, Multidisciplinary
Yi Han, Shaoqiang Dong, Jiawei Shao, Wei Fan, Chunyan Chi
Summary: The successful synthesis of a carbon nanobelt (CNB) and the characterization of its unique structure and properties were reported in this study. The findings provide a new strategy for the synthesis of highly strained CNBs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Michele Ciavarella, Shubo Zhang, Huajian Gao, Gabriele Cricri
Summary: Experimental studies on peeling in viscoelastic materials have been conducted for many years, with a focus on 90 or 180 degrees angle. The classical Rivlin energy balance equation is commonly used to determine the velocity-dependent work of fracture. However, the behavior of this velocity dependence remains unexplained and existing models fail to account for it.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Christos E. Athanasiou, Xing Liu, Boyu Zhang, Truong Cai, Cristina Ramirez, Nitin P. Padture, Jun Lou, Brian W. Sheldon, Huajian Gao
Summary: Measuring fracture toughness of materials at small scales remains challenging, but the recently developed indentation pillar-splitting method shows promise in improving flexibility for such measurements at the microscale. However, the underlying mechanism of the fracture instability observed in this method is still unclear. In this study, in situ experiments and high-fidelity simulations were combined to provide a comprehensive description of the fracture instability in indentation pillar-splitting. Additionally, a machine-learning-based solution for predicting the critical indentation load of fracture instability was established for broader use of this method by the community.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Changhong Linghu, Xudong Yang, Yangchengyi Liu, Dong Li, Huajian Gao, Jimmy Hsia
Summary: This study investigates the mechanics of adhesion between shape memory polymers (SMPs) and a rigid spherical indenter through experimental testing, theoretical analysis, and finite element analysis. The results reveal that the orders of magnitude enhancement of adhesion in SMPs compared to conventional elastic adhesion systems is mainly due to the shape locking effect during the transition from the rubbery to glassy states, which increases the effective radius of curvature of the contact surface.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Review
Materials Science, Multidisciplinary
Wenwang Wu, Re Xia, Guian Qian, Zengqian Liu, Nima Razavi, Filippo Berto, Huajian Gao
Summary: The rapid progress in advanced manufacturing, multidisciplinary integration, and artificial intelligence has brought about a new era of technological development in the design of lightweight, well-integrated, multifunctional, intelligent, flexible, and biomimetic materials and structures. The authors propose a new research paradigm of mechanostructures to address the limitations of traditional structural research, aiming to achieve target mechanical responses of structures, devices, and equipment in extreme environments by integrating structural design, manufacturing, and performance evaluation.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Zhenghong Dai, Meaghan C. Doyle, Xing Liu, Mingyu Hu, Qizhong Wang, Christos E. Athanasiou, Yucheng Liu, Brian W. Sheldon, Huajian Gao, Shengzhong (Frank) Liu, Nitin P. Padture
Summary: In this study, the mechanical properties, including elasticity, plasticity, fracture, and creep, relevant to the mechanical reliability of perovskite solar cells (PSCs), were systematically investigated. High-quality single-crystals of commonly studied metal-halide perovskites (MHPs) were fabricated and studied. The results provide important parameters for future mechanical behavior and reliability analysis of MHPs and PSCs.
SCRIPTA MATERIALIA
(2023)
Article
Multidisciplinary Sciences
Xiao Guo, Xinyu Dong, Guijin Zou, Huajian Gao, Wei Zhai
Summary: We have successfully fabricated a strong and tough hydrogel with architected multiscale hierarchical structures using a freeze-casting-assisted solution substitution strategy. The key factors contributing to its toughness are the microscale anisotropic honeycomb-structured fiber walls and matrix, hydrogen bond-enhanced fibers with nanocrystalline domains, and cross-linked strong polyvinyl alcohol chains with chain-connecting ionic bonds. This study provides insights into the structure-performance mechanisms of tough hierarchically structured hydrogels and offers inspiration for advanced design strategies for other promising hierarchical materials.
Article
Multidisciplinary Sciences
Changhong Linghu, Yangchengyi Liu, Yee Yuan Tan, Jun Heng Marcus Sing, Yuxuan Tang, Aiwu Zhou, Xiufeng Wang, Dong Li, Huajian Gao, K. Jimmy Hsia
Summary: Using shape-memory polymers (SMPs), researchers have developed adhesive materials that can overcome the challenges of adhesion on rough surfaces. The adhesive exhibits extraordinary strength in the rubbery state and can easily detach in the glassy state, making it highly switchable. This advancement has the potential to enhance the capabilities of smart adhesives in various applications.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Chao Shi, Guijin Zou, Zeming Wu, Meng Wang, Xinyun Zhang, Huajian Gao, Xin Yi
Summary: Combining theoretical modeling and molecular dynamics simulations, the study investigates the packing of a flexible filament inside a vesicle and explores the effects of filament stiffness, size, and osmotic pressure on the vesicle morphology. The results reveal various morphological transitions and establish phase diagrams predicting shape and symmetry transitions. The organization of filaments or nanotube rings inside vesicles, liposomes, or cells is discussed, providing insights into cell shaping, cellular stability, and the design of artificial cells and biohybrid microrobots.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Yujia Wang, Fan Xu, Huajian Gao, Xiaoyan Li
Summary: This study introduces a new type of hierarchical lattice, called ISO-COP, which exhibits elastic isotropy and enhanced moduli. The fabricated ISO-COP microlattices demonstrate superior strength compared with existing fractal octet-truss hierarchical lattices.
Article
Materials Science, Multidisciplinary
Anne Marie Z. Tan, Zhi Li, Huajian Gao
Summary: In recent years, complex concentrated alloys (CCAs) have attracted attention for their excellent mechanical properties. However, the effect of chemical inhomogeneity on dislocation nucleation and incipient plasticity in CCAs is not well understood. In this study, a statistical model combining elasticity theory and statistical modeling was used to investigate incipient plasticity in CCAs. The model was validated by molecular dynamics simulations and revealed the influence of spatial variation in the local properties on the nanoindentation-induced plasticity in CCAs.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Mechanics
Yingchao Zhang, Yinji Ma, Jing Yu, Huajian Gao
Summary: Snap-through buckling of bistable structures can be triggered and controlled through deformation caused by an externally applied magnetic field in hard magnetic elastica (HME). The key parameters in the design of HME are the remanent magnetization density after premagnetization and the external magnetic field. Experimental results show that optimal positions of a single magnetization interface and directions of a uniform actuation field can reduce the required actuation field for snapping nearly by half in pre-buckled beams with two-ends fixed.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Wenxin Zhang, Zhi Li, Ruoqi Dang, Thomas T. Tran, Rebecca A. Gallivan, Huajian Gao, Julia R. Greer
Summary: This study investigates the mechanical size effects in nanosized metals, focusing on the hierarchical microstructures and their impact on mechanical properties. By producing nickel nanopillars and conducting compression experiments, the researchers discover the influence of hierarchical microstructures on the mechanical response of nanosized metals.
Article
Chemistry, Multidisciplinary
Zhuo Chang, Jing Zhang, Yilun Liu, Huajian Gao, Guang-Kui Xu
Summary: In this study, the rheological responses of cardiac tissues at different stages of myocardial infarction (MI) were investigated using atomic force microscopy-based microrheology. It was found that all cardiac tissues exhibited a universal two-stage power-law rheological behavior at different time scales. The power-law exponents discovered in the experiment can capture an inconspicuous initial rheological change, making them suitable as markers for early-stage MI diagnosis.
Article
Multidisciplinary Sciences
Yang Chen, Fangyan Zhu, Jiantao Leng, Tianquan Ying, Jin- Wu Jiang, Quan Zhou, Tienchong Chang, Wanlin Guo, Huajian Gao
Summary: This study reports a mechanism capable of controllably driving directed motion of any nanoo-bjects in both solid and liquid forms. The driving force originates from the difference in atomic fluctuations of the substrate behind and ahead of the object, and it can be flexibly tuned based on the amplitude and frequency of the substrate.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Review
Materials Science, Multidisciplinary
Weiming Ji, Runhua Zhou, Priyanka Vivegananthan, Mao See Wu, Huajian Gao, Kun Zhou
Summary: This review critically evaluates the latest research on gradient-structured metals and alloys, summarizing their fabrication techniques, strengthening mechanisms, mechanical properties, and discussing potential applications and prospects.
PROGRESS IN MATERIALS SCIENCE
(2023)
