Quasi-Static Energy Transport between Nanoparticles

2015 ◽  
Vol 1779 ◽  
pp. 1-6
Author(s):  
George Y. Panasyuk ◽  
Kirk L. Yerkes
Keyword(s):  
Energy Transfer ◽  
Total Energy ◽  
Quantum System ◽  
Langevin Equation ◽  
Energy Transport ◽  
Harmonic Oscillators ◽  
Quantum Langevin Equation ◽  
Energy Current ◽  
Long Time ◽  
Static Energy

ABSTRACTWe consider energy transfer between non-equal nanoparticles mediated by a quantum system. The nanoparticles are considered as thermal reservoirs described as ensembles of finite numbers of harmonic oscillators within the Drude-Ullersma model having mode spacings Δ1 and Δ2. Our approach is based on the generalized quantum Langevin equation. The quasi-static energy transport between the thermal reservoirs is investigated. As is shown, the double degeneracy of the mode frequencies, which occurred in the previously considered case when Δ1 = Δ2, is removed in the present case of non-equal mode spacings. Equations describing long-time (t ∼1/Δ1,2) relaxation for the mode temperatures (or the ensemble averaged mode energies) are solved and the resulting expression for the total energy current between the nanoparticles is derived and explored.

Energy transport in a nonlinear and inhomogeneous random gravity wave field

1975 ◽  
Vol 70 (1) ◽  
pp. 113-126 ◽  
Author(s):  
Jürgen Willebrand
Keyword(s):  
Energy Transfer ◽  
Total Energy ◽  
Gravity Waves ◽  
Water Waves ◽  
Energy Transport ◽  
Ocean Waves ◽  
Simple Extension ◽  
Shallow Water Waves ◽  
Wave Fields ◽  
Resonant Interactions

Certain tertiary resonant interactions of gravity waves which have been found previously can be obtained more easily by using a simple extension of Whitham's formalism. The contribution of these interactions to the total energy transfer in an inhomogeneous random field of gravity waves is calculated. It is found to be small for open-ocean waves, but to be of some importance for shallow-water waves, where topography or mean shear currents may produce strong inhomogeneities. The nonlinear splitting of the group velocity is found to be unimportant in wave fields with sufficiently smooth spectra.

scholarly journals Simulating molecules on a cloud-based 5-qubit IBM-Q universal quantum computer

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
S. Leontica ◽  
F. Tennie ◽  
T. Farrow
Keyword(s):  
Quantum System ◽  
Energy Transport ◽  
Quantum Computer ◽  
Complex Molecule ◽  
Dissipative System ◽  
Quantum Simulation ◽  
Quantum Systems ◽  
Molecular Structures ◽  
Unitary Evolution ◽  
Universal Quantum

AbstractSimulating the behaviour of complex quantum systems is impossible on classical supercomputers due to the exponential scaling of the number of quantum states with the number of particles in the simulated system. Quantum computers aim to break through this limit by using one quantum system to simulate another quantum system. Although in their infancy, they are a promising tool for applied fields seeking to simulate quantum interactions in complex atomic and molecular structures. Here, we show an efficient technique for transpiling the unitary evolution of quantum systems into the language of universal quantum computation using the IBM quantum computer and show that it is a viable tool for compiling near-term quantum simulation algorithms. We develop code that decomposes arbitrary 3-qubit gates and implement it in a quantum simulation first for a linear ordered chain to highlight the generality of the approach, and second, for a complex molecule. We choose the Fenna-Matthews-Olsen (FMO) photosynthetic protein because it has a well characterised Hamiltonian and presents a complex dissipative system coupled to a noisy environment that helps to improve the efficiency of energy transport. The method can be implemented in a broad range of molecular and other simulation settings.

An approach towards a simple quantum Langevin equation

2011 ◽  
Vol 511 (4-6) ◽  
pp. 471-481 ◽  
Author(s):  
Joshua M. Jackson ◽  
Pietrina L. Brucia ◽  
Michael Messina
Keyword(s):  
Langevin Equation ◽  
Quantum Langevin Equation ◽  
Simple Quantum

scholarly journals Efficient Interlayer Exciton Transport in Two-Dimensional Metal-Halide Perovskites.

2020 ◽  
Author(s):  
Alvaro J Magdaleno ◽  
Michael Seitz ◽  
Michel Frising ◽  
Ana Herranz de la Cruz ◽  
Antonio I. Fernández-Domínguez ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Carrier ◽  
Carrier Transport ◽  
Energy Transport ◽  
Diffusion Length ◽  
Charge Carrier Transport ◽  
Two Dimensional ◽  
Exciton Transport ◽  
Halide Perovskites ◽  
Excitonic Energy

We present transient microscopy measurements of interlayer energy transport in (PEA)<sub>2</sub>PbI<sub>4</sub> perovskite. We find efficient interlayer exciton transport (0.06 cm<sup>2</sup>/s), which translates into a diffusion length that exceeds 100 nm and a sub-ps timescale for energy transfer. While still slower than in-plane exciton transport (0.2 cm<sup>2</sup>/s), our results show that excitonic energy transport is considerably less anisotropic than charge-carrier transport for 2D perovskites.

THE INFLUENCES OF TEMPERATURE AND CHAIN–CHAIN INTERACTION ON FEATURES OF SOLITONS EXCITED IN α-HELIX PROTEIN MOLECULES WITH THREE CHANNELS

2009 ◽  
Vol 23 (10) ◽  
pp. 2303-2322 ◽  
Author(s):  
XIAO-FENG PANG ◽  
MEI-JIE LIU
Keyword(s):  
Energy Transport ◽  
Initial Conditions ◽  
Dynamic Features ◽  
New Model ◽  
Protein Molecules ◽  
Long Time ◽  
The Stability ◽  
Α Helix ◽  
Increasing Temperature ◽  
Chain Interaction

The dynamic features of soliton transporting the bio-energy in the α-helix protein molecules with three channels under influences of temperature of systems and chain–chain interaction among these channels have been numerically studied by using the dynamic equations in a new model and the fourth-order Runge–Kutta method. This result obtained shows that the chain–chain interaction depresses the stability of the soliton due to the dispersed effect, but the stability of the soliton in the case of simultaneous motivation of three channels by an initial conditions is better than that in another initial condition. We also find from this investigation that the new soliton can transport steadily over 1000 amino acid residues in the cases of motion of long time of 120 ps, and retain their shapes and energies to travel towards the protein molecules after mutual collision of the solitons at the biological temperatures of 300 K. Therefore the soliton is very robust against the thermal perturbation of the α-helix protein molecules at 300 K. From the investigation of changes of features of the soliton with increasing temperature, we find that the amplitudes and velocities of the solitons decrease with increasing temperature of proteins, but the soliton disperses in the cases of higher temperature of 325 K and larger structure disorders. Thus we find that the critical temperature of the soliton occurring in the α-helix protein molecules is about 320 K. Therefore we can conclude that the soliton in the new model can play an important role in the bio-energy transport in the α-helix protein molecules with three channels at biological temperature, and the new model is possibly a candidate for the mechanism of this transport.

Linkage of Arctic Sea Ice and Energy Transport

2021 ◽  
Author(s):  
Ines Höschel ◽  
Dörthe Handorf ◽  
Christoph Jacobi ◽  
Johannes Quaas
Keyword(s):  
Sea Ice ◽  
Large Scale ◽  
Energy Transport ◽  
Arctic Sea Ice ◽  
The Arctic ◽  
Moist Static Energy ◽  
Large Scale Circulation ◽  
Arctic Sea ◽  
Rossby Wave Propagation ◽  
Static Energy

&lt;p&gt;The loss of Arctic sea ice as a consequence of global warming is changing the forcing of the atmospheric large-scale circulation. &amp;#160;Areas not covered with sea ice anymore may act as an additional heat source. &amp;#160;Associated changes in Rossby wave propagation can initiate tropospheric and stratospheric pathways of Arctic - Mid-latitude linkages.&amp;#160; These pathways have the potential to impact on the large-scale energy transport into the Arctic.&amp;#160; On the other hand, studies show that the large-scale circulation contributes to Arctic warming by poleward transport of moist static energy. This presentation shows results from research within the Transregional Collaborative Research Center &amp;#8220;ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms (AC)3&amp;#8221; funded by the Deutsche Forschungsgemeinschaft.&amp;#160; Using the ERA interim and ERA5 reanalyses the meridional moist static energy transport during high ice and low ice periods is compared. &amp;#160;The investigation discriminates between contributions from planetary and synoptic scale.&amp;#160; Special emphasis is put on the seasonality of the modulations of the large-scale energy transport.&lt;/p&gt;

scholarly journals Effect of nanotube coupling on exciton transport in polymer-free monochiral semiconducting carbon nanotube networks

Nanoscale ◽  
2019 ◽  
Vol 11 (44) ◽  
pp. 21196-21206 ◽  
Author(s):  
Dylan H. Arias ◽  
Dana B. Sulas-Kern ◽  
Stephanie M. Hart ◽  
Hyun Suk Kang ◽  
Ji Hao ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Carbon Nanotube ◽  
Long Range ◽  
Energy Transport ◽  
Exciton Energy ◽  
Complex Interplay ◽  
Exciton Transport ◽  
Carbon Nanotube Networks

Exciton delocalization impacts complex interplay between rapid downhill exciton energy transfer and long-range energy transport through carbon nanotube networks.

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