Article
Optics
Yansong Fan, Zhihong Zhu, Janfa Zhang, Wei Xu, Fan Wu, Xiaodong Yuan, Chucai Guo, Shiqiao Qin
Summary: In this study, a visible graphene thermal emitter based on the metal Fabry-Perot (FP) cavity is reported. The emitter enhances the emissivity of graphene and protects it from oxidation. Furthermore, the wavelength and intensity of graphene emission can be controlled by tuning the dielectric thickness.
Article
Engineering, Multidisciplinary
Sakinah Idris, Anuar Jamaludin, Roslinda Nazar, Ioan Pop
Summary: The heightened thermal efficiency of hybrid nanofluids has practical applications in various industrial and engineering fields. This research analyzed the impact of relevant parameters on the flow and heat transfer of hybrid Cu-Al2O3/water nanofluid over a permeable moving surface, considering the effects of magnetohydrodynamic (MHD), thermal radiation, Joule heating, and thermal slip conditions. It also examined the nature of dual solutions and found that a 1:1 ratio of Cu and Al2O3 volume concentrations immersed in water offered remarkable heat transportation ability.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Igor Ilyakov, Alexey Ponomaryov, David Saleta Reig, Conor Murphy, Jake Dudley Mehew, Thales V. A. G. de Oliveira, Gulloo Lal Prajapati, Atiqa Arshad, Jan-Christoph Deinert, Monica Felicia Craciun, Saverio Russo, Sergey Kovalev, Klaas-Jan Tielrooij
Summary: The exceptional properties and dynamics of electronic heat in graphene allow for a switchable conversion of terahertz (THz) light to visible light at a sub-nano-second time scale. The researchers achieve a tunable on/off ratio of more than 30 and an increase in THz-induced emitted power in the visible range by 2 orders of magnitude using electrical gating and a grating-graphene metamaterial. These results provide a promising route for innovative optoelectronic technologies in the THz regime.
Article
Thermodynamics
Liaquat Ali Lund, Adnan Asghar, Ghulam Rasool, Ubaidullah Yashkun
Summary: This study investigates the heat transfer characteristics of a magnetized Casson sodium alginate-alumina/copper hybrid nanofluid flowing through a permeable moving plane, taking into account thermal radiation and Joule heating effects. The study focuses on the influence of the velocity ratio parameter on the solid volume fraction and Casson parameter, and examines the velocity and temperature profiles under various conditions. The results show that there are two branch solutions for the velocity ratio parameter, depending on the Casson parameter and copper volume fraction values.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Christian Bechteler, Andrew Kirkpatrick, Richard Todd
Summary: Flash sintering is a method that densifies ceramics at low furnace temperatures in a few seconds by applying an electric field. One proposed mechanism for the rapid densification involves the generation of Frenkel defects. However, experimental investigation of the emissions during flash sintering of the widely studied ceramic 3YSZ shows that the visible spectrum can be explained by thermal radiation from Joule heating rather than electroluminescence. There is no evidence for electron-hole pair recombination or any mechanism other than Joule heating during flash sintering of 3YSZ.
SCRIPTA MATERIALIA
(2022)
Article
Thermodynamics
Xiao-Hong Zhang, Awatef Abidi, A. El-Sayed Ahmed, M. Riaz Khan, M. A. El-Shorbagy, Meshal Shutaywi, Alibek Issakhov, Ahmed M. Galal
Summary: The article examines the attributes of convection and Joule heating in a magneto-hydrodynamics two-dimensional stagnation point flow, finding that temperature profiles vary with different parameters, while velocity decreases with increasing nanoparticle concentration, curvature, and Hartmann number. Friction drag decreases with larger curvature and increases with greater suction, while heat transfer rate decreases with lower Eckert number and increases with stronger suction, Hartmann, and Biot number.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
A. Ben Hayun, O. Reinhardt, J. Nemirovsky, A. Karnieli, N. Rivera, I Kaminer
Summary: The paper proposes generating quantum light using free-electron interactions, which can shape the quantum states of light through a selective choice of input light and electron states. By utilizing electron energy combs to implement photon displacement operations, such as creating displaced-Fock and displaced-squeezed states, complete control over the quantum state of generated light may be achieved in the future.
Article
Materials Science, Composites
Pei Yang, Subrata Ghosh, Tian Xia, Jiacheng Wang, Mark A. Bissett, Ian A. Kinloch, Suelen Barg
Summary: Polymer composites are considered as a potential alternative for Joule heating materials, with the construction of a continuous conductive network of fillers remaining a challenge. A three-dimensional graphene-based aerogel infiltrated with epoxy demonstrated excellent Joule heating performance, showcasing high electrical and thermal conductivity along the parallel direction to the lamellar structure growth. The induced steady-state temperature was found to have a linear relationship with the electrical and thermal conductivities of the materials, indicating potential for thermal management applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yi Cheng, Guang Cui, Changhao Liu, Zhetong Liu, Longge Yan, Bingyao Liu, Hao Yuan, Pengcheng Shi, Jun Jiang, Kewen Huang, Kun Wang, Shuting Cheng, Junliang Li, Peng Gao, Xinfang Zhang, Yue Qi, Zhongfan Liu
Summary: The dynamic joule heating system is designed for continuous synthesis of graphene fibers, achieving ultrashort high-temperature treatment with low electric energy consumption. The current flowing through the fibers can manipulate the configuration of graphene sheets and induce alignment in order to improve the electrical and mechanical performances of the graphene fibers.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Zahid Hussain, Kamel Al-Khaled, Uzma Ashrif, A. Abbasi, Sami Ullah Khan, W. Farooq, M. Ijaz Khan, Shahid Farooq, M. Y. Malik
Summary: The peristaltic phenomenon is widely used in bio-mechanics, industries, and biological sciences. This theoretical analysis focuses on the peristaltic flow of magnetized Jeffery fluid through a curved channel with heat transfer. The study finds that the temperature decreases with increasing viscoelastic parameter, the heat transfer coefficient increases with the radius of curvature, and the fluid velocity decreases in the lower half of the channel and increases near the upper wall.
AIN SHAMS ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Behnaz Jafari, Gerardine G. Botte
Summary: This study demonstrates the integration of reduced graphene oxide (rGO) into fabrics using an electrochemical method, leading to improved electrical conductivity and antibacterial properties. The rGO-coated fabric exhibits exceptional Joule-heating capabilities and a significant reduction rate against bacteria. The simplicity of the fabrication method and the desirable characteristics of the rGO-coated fabric make it a promising material for various practical applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Yinhang Zhang, Wei Wang, Fei Zhang, Lingqi Huang, Kun Dai, Chuanbing Li, Dan Liu, Yuxuan Sun, Danhui Ren, Jinyi Wu, Qingbin Zheng
Summary: This study proposes a strategy to construct thermal interface materials (TIMs) with bidirectional high thermal conductivity by incorporating micron-diamonds (MDs) in graphene nanoplatelets/nanofibrillated cellulose (GNPs/NFC) composite film. The loading and particle size of MDs can be adjusted to achieve high thermal conductivity in both in-plane and through-plane directions.
Article
Multidisciplinary Sciences
Senthil Jayanthi, Hari Niranjan
Summary: This study investigates the flow of magnetohydrodynamic (MHD) nanofluid through a stretching vertical surface influenced by various factors such as Joule heating, chemical reaction, viscosity dissipation, thermal radiation, and activation energy. By using the similarity technique and symmetry analysis, the complicated boundary layer equations for motion, energy, solute, and nanoparticle concentration are simplified. The altered equations are then solved using the shooting technique with Matlab bvp4c. The results show that the Schmidt number, Biot number, and thermal radiation have significant effects on temperature, concentration, local Nusselt number, local Sherwood number, and skin friction.
Article
Thermodynamics
MD. Shamshuddin, Mohamed R. Eid
Summary: The study investigated incompressible mixed convection flow with convective heat transport considering Joule heating and nth order reactive species. The flow model incorporated various factors including nanoparticles impact, heat source, viscous dissipation, thermophoresis, and chemical reaction. Numerical analysis was conducted using the Runge-Kutta Fehlberg method, revealing the impact of different parameters on velocity field, drag force, and Nusselt number.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Aerospace
K. Ramesh, Arshad Riaz, Zahoor Ahmad Dar
Summary: Magnetic field plays a significant role in various fields, and this study investigates the flow of a Casson fluid between horizontal parallel plates. Various influencing factors are considered, and conclusions about velocity and temperature characteristics are drawn.
PROPULSION AND POWER RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Dmitry A. Mylnikov, Elena I. Titova, Mikhail A. Kashchenko, Ilya V. Safonov, Sergey S. Zhukov, Valentin A. Semkin, Kostya S. Novoselov, Denis A. Bandurin, Dmitry A. Svintsov
Summary: This study investigates the sub-terahertz photoconductivity of gapped bilayer graphene with electrically induced p-n junctions. The results show that these junctions have a strong positive contribution to resistance, temperature resistance coefficient, and photoresistivity at cryogenic temperatures.
Article
Optics
Jingxuan Wei, Yang Chen, Ying Li, Wei Li, Junsheng Xie, Chengkuo Lee, Kostya S. Novoselov, Cheng-Wei Qiu
Summary: This study presents a novel approach for circularly polarized light detection in the mid-infrared region, using geometric photodetectors and graphene ribbons. It offers a high-quality, filterless solution for on-chip CPL detection.
Article
Chemistry, Multidisciplinary
Elena Titova, Dmitry Mylnikov, Mikhail Kashchenko, Ilya Safonov, Sergey Zhukov, Kirill Dzhikirba, Kostya S. Novoselov, Denis A. Bandurin, Georgy Alymov, Dmitry Svintsov
Summary: Graphene's high carrier mobility, compatibility with on-chip waveguides and transistors, and small heat capacitance make it a promising material for the detection of terahertz (THz) radiation. However, the weak reaction of graphene's physical properties to the detected radiation is due to the absence of a band gap. This study investigates the effect of electrically induced band gap on THz detection in graphene bilayer with split-gate p-n junction, and demonstrates that the induction of a band gap leads to increased current and voltage responsivities.
Article
Chemistry, Multidisciplinary
Dali Ji, Yunah Lee, Yuta Nishina, Kazuhide Kamiya, Rahman Daiyan, Dewei Chu, Xinyue Wen, Masamichi Yoshimura, Priyank Kumar, Daria V. Andreeva, Kostya S. Novoselov, Gwan-Hyoung Lee, Rakesh Joshi, Tobias Foller
Summary: This study introduces a simple electrochemical method utilizing the angstrom confinement of laminar rGO nanochannels to achieve atomically thin transition metal oxides. The method allows for sub-unit-cell growth of 2D-TMO and demonstrates a balance between high activity and stability.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
M. Grzeszczyk, S. Acharya, D. Pashov, Z. Chen, K. Vaklinova, M. van Schilfgaarde, K. Watanabe, T. Taniguchi, K. S. Novoselov, M. I. Katsnelson, M. Koperski
Summary: It is discovered that despite similar structural and magnetic configurations, the coupling between excitons and magnetization is qualitatively different in CrBr3 and CrI3 films. Through a combination of optical spin pumping experiments and state-of-the-art theory, it is concluded that the hole-magnetization coupling has the opposite sign in CrBr3 and CrI3, as well as between the ground and excited exciton state. Efficient spin pumping capabilities are demonstrated in CrBr3 driven by magnetization via spin-dependent absorption, and the different origins of the magnetic hysteresis in CrBr3 and CrI3 are unraveled.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Na Xin, James Lourembam, Piranavan Kumaravadivel, A. E. Kazantsev, Zefei Wu, Ciaran Mullan, Julien Barrier, Alexandra A. Geim, I. V. Grigorieva, A. Mishchenko, A. Principi, V. I. Fal'ko, L. A. Ponomarenko, A. K. Geim, Alexey I. Berdyugin
Summary: The most distinctive feature of graphene is its electronic spectrum, in which the Dirac point is located. At low temperatures, the intrinsic behavior of this spectrum is often hidden by charge inhomogeneity, but thermal excitations can overcome the disorder at higher temperatures and create an electron-hole plasma. The behavior of this plasma in magnetic fields is not well understood at present.
Article
Nanoscience & Nanotechnology
Tao Sun, Zhiyuan Tang, Wenjie Zang, Zejun Li, Jing Li, Zhihao Li, Liang Cao, Jan Sebastian Dominic Rodriguez, Carl Osby M. Mariano, Haomin Xu, Pin Lyu, Xiao Hai, Huihui Lin, Xiaoyu Sheng, Jiwei Shi, Yi Zheng, Ying-Rui Lu, Qian He, Jingsheng Chen, Kostya S. Novoselov, Cheng-Hao Chuang, Shibo Xi, Xin Luo, Jiong Lu
Summary: Heterogeneous single-atom spin catalysts combined with magnetic fields have been designed for accelerated chemical reactions. A hydrothermal approach was used to synthesize single-atom spin catalysts with various substitutional magnetic atoms in a MoS2 host. The Ni-1/MoS2 catalyst with a distorted tetragonal structure showed global room-temperature ferromagnetism, and the addition of a mild magnetic field significantly enhanced the oxygen evolution reaction magnetocurrent, leading to excellent activity and stability in water splitting cells.
NATURE NANOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Rongguo Song, Boyang Mao, Zhe Wang, Yueyue Hui, Ning Zhang, Ran Fang, Jingwei Zhang, Yuen Wu, Qi Ge, Kostya S. Novoselov, Daping He
Summary: A graphene-assembled film (GAF) is introduced as a potential alternative to metal-based conducting materials in wireless communication and EMI shielding devices. GAF exhibits strong anticorrosive behavior and outperforms copper in terms of antenna bandwidth, EMI shielding effectiveness, and frequency selectivity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Krisztina Regos, Remy Pawlak, Xing Wang, Ernst Meyer, Silvio Decurtins, Gabor Domokos, Kostya S. Novoselov, Shi-Xia Liu, Ulrich Aschauer
Summary: Molecular self-assembly plays a crucial role in technology and biological systems. Predicting pattern formation in 2D molecular networks is challenging, but this study introduces a simplified hierarchical geometric model based on graph theory to predict extended network patterns. The model provides pattern classification and prediction within specific ranges, offering a different perspective on self-assembled molecular patterns and potential applications.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Ye-Chuang Han, Jun Yi, Beibei Pang, Ning Wang, Xu-Cheng Li, Tao Yao, Kostya S. Novoselov, Zhong-Qun Tian
Summary: A novel graphene-confined ultrafast radiant heating (GCURH) method is developed to synthesize high-loading metal cluster catalysts in microseconds, overcoming the trade-off between ultrasmall size and high loading. The graphene acts as a diffusion-constrained nanoreactor, providing kinetics-dominant and diffusion-constrained conditions for the synthesis of subnanometer metal clusters.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Physical
A. Bhattacharya, I. Timokhin, R. Chatterjee, Q. Yang, A. Mishchenko
Summary: This article introduces a method of automatically searching and classifying 2D flat band materials using machine learning algorithms. By combining supervised and unsupervised learning algorithms, a convolutional neural network is used to identify 2D flat band materials, which are then subjected to symmetry-based analysis using a bilayer unsupervised learning algorithm. This method helps construct a database of 2D materials and reveals material classes beyond the known flat band paradigms.
NPJ COMPUTATIONAL MATERIALS
(2023)
Article
Engineering, Manufacturing
Yihe Huang, Yize Li, Kewen Pan, Yixian Fang, Kai Chio Chan, Xiaoyu Xiao, Chao Wei, Kostya S. Novoselov, John Gallop, Ling Hao, Zhu Liu, Zhirun Hu, Lin Li
Summary: We report a new laser-based method for producing ultrawideband metamaterial-based microwave absorbers with uniform sheet resistance and negative magnetic permeability, resulting in a wide bandwidth. The absorbers show high microwave absorption coefficient within a certain frequency range, and can be used in aviation, EMI suppression, and 5G applications.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Article
Chemistry, Physical
Kendon Shirley, Hsinhan Tsai, Nicholas Cucciniello, Jonathan Bird, Quanxi Jia, Elias Torres, Phil Butler, Anthony Butler, Jerome Crocco, Eslam Taha, Abdulsalam Alhawsawi, Jessica Germino, Maoz Dor, Chaochao Dun, Omer Firat, Jared Parker, Matt Graham, Kostya S. Novoselov, Wanyi Nie
Summary: We have developed a recyclable perovskite-graphene heterostructure for high-performance X-ray detection in medical imaging. The graphene pixel maintains high mobility even after perovskite deposition, enabling efficient conversion for ultrahigh sensitivity. By increasing the operational bias of the graphene channel, the signal-to-noise ratio of X-ray detection can be significantly improved. The perovskite layer can be easily washed off without damaging the graphene, making our heterostructure X-ray detector recyclable.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Nikita Kazeev, Abdalaziz Rashid Al-Maeeni, Ignat Romanov, Maxim Faleev, Ruslan Lukin, Alexander Tormasov, A. H. Castro Neto, Kostya S. Novoselov, Pengru Huang, Andrey Ustyuzhanin
Summary: Two-dimensional materials offer a promising platform for next-generation electronic devices and high-tech applications. We propose a machine learning approach to estimate the properties of 2D materials based on their lattice structure and defect configuration, allowing for rapid tuning of material properties. Our methodology outperforms state-of-the-art approaches in terms of energy prediction accuracy and resource efficiency.
NPJ COMPUTATIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
D. V. Grudinin, G. A. Ermolaev, D. G. Baranov, A. N. Toksumakov, K. V. Voronin, A. S. Slavich, A. A. Vyshnevyy, A. B. Mazitov, I. A. Kruglov, D. A. Ghazaryan, A. V. Arsenin, K. S. Novoselov, V. S. Volkov
Summary: There is a global trend towards miniaturization and multiwavelength performance of nanophotonic devices. Hexagonal boron nitride (hBN) is a promising material for future nanophotonics due to its inherent anisotropy and prospects of high-quality monocrystal growth with an atomically flat surface.
MATERIALS HORIZONS
(2023)
