Article
Physics, Multidisciplinary
Davoud Adinehloo, Weilu Gao, Ali Mojibpour, Junichiro Kono, Vasili Perebeinos
Summary: The electrical conductivity of macroscopic assemblies of nanomaterials is determined by the interplay between electronic transport and phonons. Phonons can reduce conductivity through electron scattering, but also enhance it by aiding electron propagation. In this study, we found that phonon-assisted coherent electron transport is the dominant mechanism for high-temperature transport in carbon nanotubes. This discovery proves the potential of single-chirality carbon nanotube films as unique solid-state ensembles for the development of room-temperature coherent electronic devices.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ya Feng, Yuta Sato, Taiki Inoue, Rong Xiang, Kazu Suenaga, Shigeo Maruyama
Summary: Thermal conductivity of a suspended single-walled carbon nanotube (SWCNT) is significantly enhanced by introducing an axial tensile strain, and the enhancement is positively correlated with the strain magnitude. Furthermore, the reduction of thermal conductivity with temperature is alleviated for the strained nanotube compared to unstrained cases.
Article
Multidisciplinary Sciences
Guandong Cui, Zhi Xu, Han Li, Shuchen Zhang, Luping Xu, Alessandro Siria, Ming Ma
Summary: Investigation on the response and performance of individual carbon nanotubes under osmotic forcing is lacking. In this study, we measure the osmotic energy conversion for individual double-walled carbon nanotubes and find a giant power density and slip length. Our results suggest that carbon nanotubes are a good candidate for ultrafast transport and osmotic power harvesting under salinity gradients.
NATURE COMMUNICATIONS
(2023)
Article
Thermodynamics
Lin Qiu, Fengcheng Li, Ning Zhu, Yanhui Feng, Xinxin Zhang, Xiaohua Zhang
Summary: In this study, the relationship between thermal conductivity and the orientation of polymer chains in carbon nanotubes (CNTs) was investigated. It was found that the thermal conductance is strongly dependent on the orientation of polymer chain, leading to an enhancement of the phonon coupling at the CNT contact and an increase in the interfacial thermal conductance for thermal transport across the tubes.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Physics, Applied
Susumu Okada, Yanlin Gao, Mina Maruyama
Summary: In this study, the electronic structure of carbon nanotube bundles was investigated using density functional theory and a simple tight-binding approximation. The research found that the band dispersion relation near the Fermi level along the intertube direction is sensitive to the nanotube species and their mutual orientation within the bundles, especially in cases of three-fold symmetry. The tight-binding calculation and wave function analysis revealed that this orientation dependence is due to intertube wave function coupling, regardless of the existence of a node between nanotubes.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Byeonghwa Goh, Joonmyung Choi
Summary: The microscopic structural changes of coiled multi-walled carbon nanotube (MWCNT) yarns during mechanical deformation are investigated using a multiscale constitutive model. Molecular dynamics simulations reveal that the nanotube diameter significantly affects the nonlinear mechanical behavior. The multiscale modeling predicts the stress and interstitial area change for each nanotube based on its diameter and position distribution in the microstructure.
Article
Chemistry, Multidisciplinary
Lijinhong Huang, Lihong Liu, Wanfu Huang, Bingxin Zhao, Zhangfeng Shen, Yaqing Bao, Hussein Znad
Summary: This study developed a novel nanostructured adsorbent using functionalized multi-walled carbon nanotubes and magnetic Fe3O4 nanoparticles, which can efficiently extract low concentration of lanthanum ions from water. The adsorbent exhibited high lanthanum adsorption capacity and excellent recovery efficiency.
Article
Chemistry, Physical
Hanqing Wei, Haifei Zhan, Yanjie Wang, Yizhuo Gu, Shaokai Wang, Zuoguang Zhang, Min Li
Summary: The mechanical properties of carbon nanotube (CNT) bundles are influenced by their stacking morphology, with bundles containing zigzag DWNTs exhibiting higher Young's modulus but lower yielding strength. Initial off-axial angle perturbations in constituent DWNTs can lead to misalignments that degrade the bundle structures' yielding strength and yielding strain. The impacts of stacking morphology on the overall tensile properties of DWNT bundles can be quantitatively predicted using an elastic column approximation for each DWNT.
Article
Materials Science, Multidisciplinary
Yaomin Li, Bin Zhang
Summary: The dynamic response behavior of SWCNT bundles, which can undergo various structural transitions under different pressures and shock velocities, is investigated using molecular dynamics simulations. The results show that the bundles undergo radial deformation, structural transformation, and liquefaction under different pressure and shock velocity conditions.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Analytical
Panagis D. Samolis, Xuedong Zhu, Michelle Y. Sander
Summary: This paper introduces a novel imaging modality based on time-resolved mid-infrared photothermal microscopy for label-free imaging of biological samples in a water-rich environment. By observing and characterizing the photothermally induced spatial gradients, localized time profiles with enhanced signal-to-noise, hyper-temporal image stacks, and two-dimensional mapping of the time decay profiles are obtained without complex post image processing. The difference in time decay profiles between axon bundles and the water background allows for background differentiation, and quantitative analysis of the signal evolution over time reveals the heat transfer dynamics.
ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Hiromu Hamasaki, Takumi Kawase, Kaori Hirahara
Summary: The interface between carbon nanotubes plays a significant role in their thermal transport properties. This study investigates the anisotropic thermal properties of carbon nanotube bundles using the phase transition of Sn nanoparticles. The results reveal that the anisotropic thermal properties are not limited to high temperatures and are more pronounced at lower temperatures.
PHYSICAL REVIEW MATERIALS
(2022)
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
Nanoscience & Nanotechnology
Yunfan Guo, Enzheng Shi, Jiadi Zhu, Pin-Chun Shen, Jiangtao Wang, Yuxuan Lin, Yunwei Mao, Shibin Deng, Baini Li, Ji-Hoon Park, Ang-Yu Lu, Shuchen Zhang, Qingqing Ji, Zhe Li, Chenguang Qiu, Song Qiu, Qingwen Li, Letian Dou, Yue Wu, Jin Zhang, Tomas Palacios, Anyuan Cao, Jing Kong
Summary: In this study, a non-destructive soft-lock drawing method was developed to assemble high-density horizontal arrays of single-walled carbon nanotubes (CNTs). The assembled CNT bundles were then used as nanometer electrical contacts in high-density monolayer molybdenum disulfide (MoS2) transistors, demonstrating their potential for future electronic devices and advanced integration technologies.
NATURE NANOTECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Jake Dudley Mehew, Marina Y. Timmermans, David Saleta Reig, Stefanie Sergeant, Marianna Sledzinska, Emigdio Chavez-Angel, Emily Gallagher, Clivia M. Sotomayor Torres, Cedric Huyghebaert, Klaas-Jan Tielrooij
Summary: Nanomaterials, particularly carbon nanotubes (CNTs), are promising candidates for applications requiring high thermal conductivity. In this study, the thermal conductivity of free-standing double-walled CNT films was measured using all-optical Raman thermometry, showing significantly enhanced thermal conduction compared to single-walled CNT films. This research contributes to a better understanding of these nanomaterials and their suitability for extreme ultraviolet (EUV) lithography.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
R. M. Rudenko, O. O. Voitsihovska, V. N. Poroshin
Summary: The paper presents the results of a study on radiation defects in single-walled carbon nanotube (SWCNT) bundles at low temperatures. The experiment combined 1 MeV electron irradiation and electrical conductivity measurements to investigate the influence of stable and unstable radiation defects on the electrical properties of SWCNTs. It was found that the 2D Mott variable range hopping conduction regime exhibits resistance to electron irradiation.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Mohammad Alaghemandi
CHEMICAL PHYSICS LETTERS
(2015)
Article
Chemistry, Physical
Mohammad Reza Gharib-Zahedi, Mohsen Tafazzoli, Michael C. Boehm, Mohammad Alaghemandi
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
Article
Chemistry, Physical
Schuyler B. Nicholson, Mohammad Alaghemandi, Jason R. Green
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Mohammad Alaghemandi, Rochus Schmidt
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Chemistry, Physical
Mohammad Alaghemandi, Jason R. Green
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Lucas B. Newcomb, Mohammad Alaghemandi, Jason R. Green
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Schuyler B. Nicholson, Mohammad Alaghemandi, Jason R. Green
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Mohammad Alaghemandi, Eckhard Spohr
CHEMICAL PHYSICS LETTERS
(2013)
Article
Chemistry, Multidisciplinary
Bjoern Bredenkoetter, Maciej Grzywa, Mohammad Alaghemandi, Rochus Schmid, Wouter Herrebout, Patrick Bultinck, Dirk Volkmer
CHEMISTRY-A EUROPEAN JOURNAL
(2014)
Article
Chemistry, Physical
Stefan Henne, Bjoern Bredenkoetter, Mohammad Alaghemandi, Sareeya Bureekaew, Rochus Schmid, Dirk Volkmer
Article
Chemistry, Physical
Liane Lorbeer, Mohammad Alaghemandi, Eckhard Spohr
JOURNAL OF MOLECULAR LIQUIDS
(2014)
Article
Chemistry, Physical
Mohammad Alaghemandi, Mohammad Reza Gharib-Zahedi, Eckhard Spohr, Michael C. Boehm
JOURNAL OF PHYSICAL CHEMISTRY C
(2012)
Article
Chemistry, Multidisciplinary
Mohammad Alaghemandi, Eckhard Spohr
Article
Chemistry, Physical
Mohammad Reza Gharib-Zahedi, Amin Koochaki, Mohammad Alaghemandi
Summary: This study investigates the thermal conductivity of polyamide under the confinement of MoS2 sheets and finds that the thermal conductivity is significantly enhanced when the polymer chains are confined by MoS2 surfaces. This enhancement is attributed to the elongation and alignment of the polymer chains caused by the presence of MoS2 surfaces, which leads to higher order and denser packing of the polymer. Furthermore, the structural modification and increased number of hydrogen bonds also contribute to the improved thermal conductivity of the polymer.
