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Ajori S, Sadeghi F. Design of High-Frequency Carbon Nanotube-Carbon Nanotorus Oscillators for Energy Harvesting: A Molecular Dynamics Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4811-4823. [PMID: 38381889 DOI: 10.1021/acs.langmuir.3c03702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
The objective of this study is to examine the feasibility of using carbon-based nanostructures as nano-oscillators for future nanoelectromechanical applications such as energy harvesting devices and vibration sensing. The proposed nano-oscillator is comprised of a carbon nanotube (CNT) oscillating through a fixed carbon nanotorus molecule. For the first time in the literature, molecular dynamics (MD) simulations in conjunction with the Tersoff-Brenner (TB) and 6-12 Lennard-Jones (LJ) potential functions are adopted to determine the molecular interactions of the introduced nanodevice. To simulate the oscillatory behavior, two different schemes, namely, rigid and flexible, are considered. A detailed parametric study is performed to investigate the effects of rigidity, flexibility, and size of nanostructures as well as initial velocity on the force distribution and time histories of displacement and velocity of the core. Numerical results reveal that unlike the rigid oscillators, the flexible oscillators damp out within a few cycles. It is shown that the escape velocity of the flexible scheme is ∼6 times greater than that of the rigid scheme. The operating frequency and the generated power of rigid and flexible schemes under different system parameters are also calculated and compared. It is demonstrated that with increasing the ratio of nanotube-to-nanotorus diameter, the operating frequencies of both schemes decrease, while the generated powers do not behave monotonically. For a determined system parameter, it is observed that the flexible scheme provides higher operating frequencies compared to the rigid one. Moreover, considering that the initial velocity of the system is identical to the escape velocity, the generated power of the flexible scheme is calculated to be ∼14 times greater than that of the rigid scheme.
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Affiliation(s)
- S Ajori
- Department of Mechanical Engineering, University of Maragheh, Maragheh, East Azerbaijan Province 83111-55181, Iran
| | - F Sadeghi
- Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Ardabili 56318-44133, Iran
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Nyabadza A, McCarthy É, Makhesana M, Heidarinassab S, Plouze A, Vazquez M, Brabazon D. A review of physical, chemical and biological synthesis methods of bimetallic nanoparticles and applications in sensing, water treatment, biomedicine, catalysis and hydrogen storage. Adv Colloid Interface Sci 2023; 321:103010. [PMID: 37804661 DOI: 10.1016/j.cis.2023.103010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/30/2023] [Accepted: 09/24/2023] [Indexed: 10/09/2023]
Abstract
This article provides an in-depth analysis of various fabrication methods of bimetallic nanoparticles (BNP), including chemical, biological, and physical techniques. The review explores BNP's diverse uses, from well-known applications such as sensing water treatment and biomedical uses to less-studied areas like breath sensing for diabetes monitoring and hydrogen storage. It cites results from over 1000 researchers worldwide and >300 peer-reviewed articles. Additionally, the article discusses current trends, actionable recommendations, and the importance of synthetic analysis for industry players looking to optimize manufacturing techniques for specific applications. The article also evaluates the pros and cons of various fabrication methods, highlighting the potential of plant extract synthesis for mass production of capped BNPs. However, it warns that this method may not be suitable for certain applications requiring ligand-free surfaces. In contrast, physical methods like laser ablation offer better control and reactivity, especially for applications where ligand-free surfaces are critical. The report underscores the environmental benefits of plant extract synthesis compared to chemical methods that use hazardous chemicals and pose risks to extraction, production, and disposal. The article emphasizes the need for life cycle assessment (LCA) articles in the literature, given the growing volume of research on nanotechnology materials. This article caters to researchers at all stages and applies to various fields applying nanomaterials.
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Affiliation(s)
- Anesu Nyabadza
- I-Form Advanced Manufacturing Centre Research, Dublin City University, Glasnevin, Dublin 9, Ireland; EPSRC & SFI Centre for Doctoral Training (CDT) in Advanced Metallic Systems, School of Mechanical & Manufacturing Engineering, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland; Advanced Processing Technology Research Centre, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Éanna McCarthy
- I-Form Advanced Manufacturing Centre Research, Dublin City University, Glasnevin, Dublin 9, Ireland; Advanced Processing Technology Research Centre, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Mayur Makhesana
- Mechanical Engineering Department, Institute of Technology, Nirma University, Ahmedabad, Gujarat 382481, India
| | - Saeid Heidarinassab
- I-Form Advanced Manufacturing Centre Research, Dublin City University, Glasnevin, Dublin 9, Ireland; EPSRC & SFI Centre for Doctoral Training (CDT) in Advanced Metallic Systems, School of Mechanical & Manufacturing Engineering, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland; Advanced Processing Technology Research Centre, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Anouk Plouze
- Advanced Processing Technology Research Centre, Dublin City University, Glasnevin, Dublin 9, Ireland; Conservatoire National des arts et Métiers (CNAM), 61 Rue du Landy, 93210 Saint-Denis, France
| | - Mercedes Vazquez
- I-Form Advanced Manufacturing Centre Research, Dublin City University, Glasnevin, Dublin 9, Ireland; EPSRC & SFI Centre for Doctoral Training (CDT) in Advanced Metallic Systems, School of Mechanical & Manufacturing Engineering, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland; Advanced Processing Technology Research Centre, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Dermot Brabazon
- I-Form Advanced Manufacturing Centre Research, Dublin City University, Glasnevin, Dublin 9, Ireland; EPSRC & SFI Centre for Doctoral Training (CDT) in Advanced Metallic Systems, School of Mechanical & Manufacturing Engineering, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland; Advanced Processing Technology Research Centre, Dublin City University, Glasnevin, Dublin 9, Ireland
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Carlomagno I, Cimmelli VA, Jou D. Tunable Heat-Flux Rectification in Graded Nanowires in Non-Linear Guyer-Krumhansl Regime. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091442. [PMID: 37176987 PMCID: PMC10180188 DOI: 10.3390/nano13091442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/15/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023]
Abstract
We study heat rectification in composition-graded nanowires, with nonlocal and nonlinear effects taken into account in a generalized Guyer-Krumhansl equation. Using a thermal conductivity dependent on composition and temperature, the heat equation is solved. Introducing a non-vanishing heat supply (as for instance, a lateral radiative heat supply), we explore the conditions under which either nonlocal or nonlinear effects or both contribute to heat rectification and how they may be controlled by means of the external radiative flux. The corresponding rectification coefficients are calculated as well, and the physical conditions under which the system becomes a thermal diode are pointed out.
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Affiliation(s)
- Isabella Carlomagno
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Vito Antonio Cimmelli
- Department of Mathematics, Computer Science and Economics, University of Basilicata, Viale dell'Ateneo Lucano, 10, 85100 Potenza, Italy
| | - David Jou
- Departament de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
- Institut d'Estudis Catalans, Carme 47, 08001 Barcelona, Catalonia, Spain
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Echeverrigaray FG, Alvarez F. Searching guidelines for scalable and controllable design of multifunctional materials and hybrid interfaces: Status and perspective. FRONTIERS IN CHEMICAL ENGINEERING 2022. [DOI: 10.3389/fceng.2022.980882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The urgent need to address the global sustainability issues that modern society is currently facing requires the development of micro and nanotechnologies, which rely largely on functional materials. Beyond studies focused solely on low-dimensional materials, broader research related to multifunctionality has shown that the major efforts to meet these criteria for new electronic, photonic, and optoelectronic concepts, particularly to achieve high-performance devices, are still challenging. By exploiting their unique properties, a comprehensive understanding of the implications of research for the synthesis and discovery of novel materials is obtained. The present article encompasses innovation research as an alternative optimization and design for sustainable energy development, bridging the scaling gap in atomically controlled growth in terms of surface heterogeneity and interfacial engineering. In addition, the corresponding research topics are widely regarded as a scientometric analysis and visualization for the evaluation of scientific contributions into the early 20 years of the 21st century. In this perspective, a brief overview of the global trends and current challenges toward high-throughput fabrication followed by a scenario-based future for hybrid integration and emerging structural standards of scalable control design and growth profiles are emphasized. Finally, these opportunities are unprecedented to overcome current limitations, creating numerous combinations and triggering new functionalities and unparalleled properties for disruptive innovations of Frontier technologies.
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