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81.
Bidirectional and Unidirectional Negative Differential Thermal Resistance Effect in a Modified Lorentz Gas Model 下载免费PDF全文
Recently,the negative differential thermal resistance effect was discovered in a homojunction made of a negative thermal expansion material,which is very promising for realizing macroscopic thermal transistors.Similar to the Monte Carlo phonon simulation to deal with grain boundaries,we introduce positive temperature-dependent interface thermal resistance in the modified Lorentz gas model and find negative differential thermal resistance effect.In the homojunction,we reproduce a pair of equivalent negative differential thermal resistance effects in different temperature gradient directions.In the heterojunction,we realize the unidirectional negative differential thermal resistance effect,and it is accompanied by the super thermal rectification effect.Using this new way to achieve high-performance thermal devices is a new direction,and will provide extensive reference and guidance for designing thermal devices. 相似文献
82.
Physics of Atomic Nuclei - Hadron form factors are calculated using the Lorentz-contracted wave functions, determined in the arbitrary dynamical scheme with the instantaneous interaction. It is... 相似文献
83.
Russian Physics Journal - Results of determining the Yarkovsky effect parameter for all asteroids with small perihelion distances known by January, 2021 are presented. A comparison is performed... 相似文献
84.
Journal of Applied and Industrial Mathematics - Under consideration is the well-known boundary value problem of aerohydrodynamics in which it is required to find the velocity distribution of fluid... 相似文献
85.
Bochkarev S. G. Brantov A. B. Gozhev D. A. Bychenkov V. Yu. 《Journal of Russian Laser Research》2021,42(3):292-303
Journal of Russian Laser Research - We study the laser-driven generation of thermonuclear neutrons from targets with a microstructured surface in the form of deuterated microwires, using... 相似文献
86.
Acoustical Physics - A new scheme of a polarization-independent two-coordinate acousto-optic deflector based on paratellurite crystals has been developed. One specific feature of the optical scheme... 相似文献
87.
Tren’kin A. A. Almazova K. I. Belonogov A. N. Borovkov V. V. Gorelov E. V. Morozov I. V. Kharitonov S. Yu. 《Technical Physics》2021,66(2):243-249
Technical Physics - The evolution of a microsecond pulsed barrier discharge initiated in atmospheric pressure air in the point–plane electrode geometry has been investigated using streak... 相似文献
88.
Journal of Experimental and Theoretical Physics - Anomalously large numbers generated of the Riemann zeta function are analyzed. A set of Mersenne primes is investigated. The equations connecting... 相似文献
89.
Radiophysics and Quantum Electronics - We study, both experimentally and theoretically, propagation of electromagnetic waves in the microwave range (10.5 GHz) through homogeneous magnetic colloids... 相似文献
90.
Effective suppression of beta oscillation in Parkinsonian state via a noisy direct delayed feedback control scheme 下载免费PDF全文
This work explores the function of the noisy direct delayed feedback(NDDF)control strategy in suppressing the pathological oscillations in the basal ganglia(BG)with Parkinson’s disease(PD).Deep brain stimulation(DBS)alleviates the PD state fantastically.However,due to its unclear mechanism and open-loop characteristic,it is challenging to further improve its effects with lower energy expenditure.The noise stimulus performs competitively in alleviating the PD state theoretically,but it cannot adapt to the neural condition timely and automatically due to its open-loop control scheme.The direct delayed feedback(DDF)control strategy is able to disturb excessive synchronous effectively.Therefore,the NDDF control strategy is proposed and researched based on a BG computational model,which can reflect the intrinsic properties of the BG neurons and their connections with thalamic neurons.Simulation results show that the NDDF control strategy with optimal parameters is effective in removing the pathological beta oscillations.By comparison,we find the NDDF control strategy performs more excellent than DDF in alleviating PD state.Additionally,we define the multiple-NDDF control strategy and find that the multiple-NDDF with appropriate parameters performs better than NDDF.The obtained results contribute to the cure for PD symptoms by optimizing the noise-induced improvement of the BG dysfunction. 相似文献