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Ribetto FD, Deghi SE, Calvo HL, Bustos-Marún RA. A dynamical model for Brownian molecular motors driven by inelastic electron tunneling. J Chem Phys 2022; 157:164102. [DOI: 10.1063/5.0113504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In recent years, several artificial molecular motors driven and controlled by electric currents have been proposed. Similar to Brownian machines, these systems work by turning random inelastic tunneling events into a directional rotation of the molecule. Despite their importance as the ultimate component of future molecular machines, their modeling has not been sufficiently studied. Here, we develop a dynamical model to describe these systems. We illustrate the validity and usefulness of our model by applying it to a well-known molecular motor, showing that the obtained results are consistent with the available experimental data. Moreover, we demonstrate how to use our model to extract some difficult-to-access microscopic parameters. Finally, we include an analysis of the expected effects of current-induced forces (CIFs). Our analysis suggests that, although nonconservative contributions of the CIFs can be important in some scenarios, they do not seem important in the analyzed case. Despite this, the conservative contributions of CIFs could be strong enough to significantly alter the system’s dynamics.
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Affiliation(s)
- Federico D. Ribetto
- Instituto de Física Enrique Gaviola (CONICET) and FaMAF, Universidad Nacional de Córdoba, Córdoba, Argentina
- Departamento de Física, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
| | - Sebastián E. Deghi
- Instituto de Física Enrique Gaviola (CONICET) and FaMAF, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Hernán L. Calvo
- Instituto de Física Enrique Gaviola (CONICET) and FaMAF, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Raúl A. Bustos-Marún
- Instituto de Física Enrique Gaviola (CONICET) and FaMAF, Universidad Nacional de Córdoba, Córdoba, Argentina
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Qi C, Ding Z, Chen L, Ge Y, Feng H. Modeling and Performance Optimization of an Irreversible Two-Stage Combined Thermal Brownian Heat Engine. ENTROPY 2021; 23:e23040419. [PMID: 33807398 PMCID: PMC8065476 DOI: 10.3390/e23040419] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 12/17/2022]
Abstract
Based on finite time thermodynamics, an irreversible combined thermal Brownian heat engine model is established in this paper. The model consists of two thermal Brownian heat engines which are operating in tandem with thermal contact with three heat reservoirs. The rates of heat transfer are finite between the heat engine and the reservoir. Considering the heat leakage and the losses caused by kinetic energy change of particles, the formulas of steady current, power output and efficiency are derived. The power output and efficiency of combined heat engine are smaller than that of single heat engine operating between reservoirs with same temperatures. When the potential filed is free from external load, the effects of asymmetry of the potential, barrier height and heat leakage on the performance of the combined heat engine are analyzed. When the potential field is free from external load, the effects of basic design parameters on the performance of the combined heat engine are analyzed. The optimal power and efficiency are obtained by optimizing the barrier heights of two heat engines. The optimal working regions are obtained. There is optimal temperature ratio which maximize the overall power output or efficiency. When the potential filed is subjected to external load, effect of external load is analyzed. The steady current decreases versus external load; the power output and efficiency are monotonically increasing versus external load.
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Affiliation(s)
- Congzheng Qi
- Institute of Thermal Science and Power Engineering, Wuhan Institute of Technology, Wuhan 430205, China; (C.Q.); (Y.G.); (H.F.)
- School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China
- College of Power Engineering, Naval University of Engineering, Wuhan 430033, China;
| | - Zemin Ding
- College of Power Engineering, Naval University of Engineering, Wuhan 430033, China;
| | - Lingen Chen
- Institute of Thermal Science and Power Engineering, Wuhan Institute of Technology, Wuhan 430205, China; (C.Q.); (Y.G.); (H.F.)
- School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China
- Correspondence: or
| | - Yanlin Ge
- Institute of Thermal Science and Power Engineering, Wuhan Institute of Technology, Wuhan 430205, China; (C.Q.); (Y.G.); (H.F.)
- School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Huijun Feng
- Institute of Thermal Science and Power Engineering, Wuhan Institute of Technology, Wuhan 430205, China; (C.Q.); (Y.G.); (H.F.)
- School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China
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Singhania A, Ghosh I, Sahoo P, Fujita D, Ghosh S, Bandyopadhyay A. Radio Waveguide-Double Ratchet Rotors Work in Unison on a Surface to Convert Heat into Power. NANO LETTERS 2020; 20:6891-6898. [PMID: 32787137 DOI: 10.1021/acs.nanolett.0c02898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Synchronizing thousands of 100% efficient rotors in a macrodevice for harvesting noise is unapprehended. Thermodynamically, realizing a thermal gradient at the atomic scale is critical. Harvesting free thermal energy or noise by resonance has a hidden clause; either externally activating a directed self-powered motion or constructing a nanoscale power supply. To accomplish this, we combined two rotor concepts, Brownian rotor, BR, and power stroke, PS, rotors available in living systems in two planes of a single molecule. Quantum tunneling images reveal how a radio-wave guided synchronization of PS-BR combination tweaks rotational dynamics of a rotor to bypass the necessity of temperature gradient (ΔT). Live imaging of thermal noise movement as electron density between a pair of molecular planes helped in optimizing the rotor design. The rotor's monolayer harvests heat from the liquid's Brownian noise and electromagnetic noise, together delivering a finite, usable power. The chip supplies the power if we wet the surface or shine electric noise.
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Affiliation(s)
- Anup Singhania
- Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam 785006, India
| | - Indrani Ghosh
- International Center for Materials and Nanoarchitectronics (MANA) and ▽Research Center for Advanced Measurement and Characterization (RCAMC), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Pathik Sahoo
- International Center for Materials and Nanoarchitectronics (MANA) and ▽Research Center for Advanced Measurement and Characterization (RCAMC), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | | | - Subrata Ghosh
- Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam 785006, India
| | - Anirban Bandyopadhyay
- International Center for Materials and Nanoarchitectronics (MANA) and ▽Research Center for Advanced Measurement and Characterization (RCAMC), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
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Jeknić-Dugić J, Petrović I, Arsenijević M, Dugić M. Dynamical stability of the one-dimensional rigid Brownian rotator: the role of the rotator's spatial size and shape. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:195304. [PMID: 29583124 DOI: 10.1088/1361-648x/aab9ef] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigate dynamical stability of a single propeller-like shaped molecular cogwheel modelled as the fixed-axis rigid rotator. In the realistic situations, rotation of the finite-size cogwheel is subject to the environmentally-induced Brownian-motion effect that we describe by utilizing the quantum Caldeira-Leggett master equation. Assuming the initially narrow (classical-like) standard deviations for the angle and the angular momentum of the rotator, we investigate the dynamics of the first and second moments depending on the size, i.e. on the number of blades of both the free rotator as well as of the rotator in the external harmonic field. The larger the standard deviations, the less stable (i.e. less predictable) rotation. We detect the absence of the simple and straightforward rules for utilizing the rotator's stability. Instead, a number of the size-related criteria appear whose combinations may provide the optimal rules for the rotator dynamical stability and possibly control. In the realistic situations, the quantum-mechanical corrections, albeit individually small, may effectively prove non-negligible, and also revealing subtlety of the transition from the quantum to the classical dynamics of the rotator. As to the latter, we detect a strong size-dependence of the transition to the classical dynamics beyond the quantum decoherence process.
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Affiliation(s)
- Jasmina Jeknić-Dugić
- University of Niš, Faculty of Science and Mathematics, Višegradska 33, 18000 Niš, Serbia
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Ding Z, Chen L, Sun F. Generalized model and optimum performance of an irreversible thermal Brownian microscopic heat pump. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.mcm.2010.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Haberhauer G, Kallweit C. Ein verbrücktes Azobenzol-Derivat als reversibler lichtinduzierter Chiralitätsschalter. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906731] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Haberhauer G, Kallweit C. A Bridged Azobenzene Derivative as a Reversible, Light-Induced Chirality Switch. Angew Chem Int Ed Engl 2010; 49:2418-21. [DOI: 10.1002/anie.200906731] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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