Relevant bibliographies by topics / Wave-packet analysis

Academic literature on the topic 'Wave-packet analysis'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Wave-packet analysis"

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Ghaani Farashahi, Arash. "Multivariate Wave-Packet Transforms." Zeitschrift für Analysis und ihre Anwendungen 36, no. 4 (2017): 481–500. http://dx.doi.org/10.4171/zaa/1598.

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Xiao, Tian Gui, Yao Wu, and Rong Hua Jin. "Analysis on the Characteristics of Scale Wave Energy Dynamic System during Extended Period of the Massive Drought in Southwestern Region." Applied Mechanics and Materials 164 (April 2012): 460–66. http://dx.doi.org/10.4028/www.scientific.net/amm.164.460.

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Through the wave-packet propagation diagnosis (WPD), the essay discusses and analyzes the characteristics of wave packet distribution and dynamic system of wave energy propagation during the extended period of the massive drought in southwestern region in the country by using the reanalysis grid data of the daily NCEP/NCAR geopotential height field and 10×10 horizontal resolution from September 2009 to April 2010. The results show that: the characteristics of dynamic system of wave energy propagation at the middle and high height fields can better reflect the stage features of this drought during the period. The wave energy time-variation chart shows that the wave disturbance during the drought is weak and the wave packet value is small. However, the wave packet value during the drought still has some changes, reflecting the characteristics of the drought change in weakness. At the maintenance period of the wave packet value, the drought is often severe, and when the wave packet value changes greatly, the magnitude of the drought will change. Seen from the characteristics of longitudinal and altitudinal propagation of the wave energy, when the wav packet strength increases, the energy will accumulate and the drought tends to be weakened; on the contrary, when the wave packet strength decreases, energy will discharge and the drought will become more severe—particularly when the wave packet weakens quickly, the drought will become more drastic. This study provides a meaningful idea for discussing the forecast of the scale weather process during the extended period.
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Xie, Peng, and Yi Zhu. "Wave packet dynamics in slowly modulated photonic graphene." Journal of Differential Equations 267, no. 10 (November 2019): 5775–808. http://dx.doi.org/10.1016/j.jde.2019.06.006.

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Yatskikh, Aleksey, Yury Yermolaev, Alexander Kosinov, Nikolai Semionov, and Alexander Semenov. "Evolution of localized artificial disturbance in 2D and 3D supersonic boundary layers." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 234, no. 1 (July 12, 2018): 115–23. http://dx.doi.org/10.1177/0954410018787120.

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The evolution of a controlled broadband wave packet in flat-plate and swept-wing supersonic boundary layers was experimentally investigated at Mach number M = 2. The wave packet was introduced into the boundary layer by a localized pulse electrical discharge. The structure and evolution downstream of the wave packet were studied by hot-wire measurements. It was found that the wave packet has a symmetric shape in a flat-plate boundary layer, whereas there is asymmetry in case of a swept-wing one. The spectral analysis of the development of different modes of the wave packet was provided.
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Xu, Meiyu, Dayong Lu, and Qibin Fan. "Construction of -stage discrete periodic wave packet frames." Applicable Analysis 97, no. 11 (June 23, 2017): 1846–66. http://dx.doi.org/10.1080/00036811.2017.1343465.

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Liu, Xiaolong, Xinran Li, Ya Meng, Changqin Chen, and Yang Yang. "Optimized wavelet packet analysis for photovoltaic wave power suppression." International Journal of Low-Carbon Technologies 17 (November 27, 2021): 90–96. http://dx.doi.org/10.1093/ijlct/ctab089.

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Abstract The hybrid energy storage system (HESS) is composed of lithium-ion battery packs and supercapacitors (SCs), it can better stabilize the output of photovoltaic (PV) in the microgrid. The wavelet packet analysis method is used to decompose the output power of PV, and the power components of different frequency bands can be obtained. However, the traditional wavelet packet decomposition method has a fixed number of decomposition layers and cannot track changes in the output power of PV in real time. This paper proposes an improved wavelet packet decomposition method: considering the fluctuation of solar cell output power and the current working status of the HESS, the fuzzy control algorithm is used to adjust the number of wavelet packet layers in real-time to realize the adaptive process of power fluctuation in the stable process, and taking into account the state of charge of lithium-ion batteries and SCs, fuzzy control is used to allocate their secondary output power to improve the stability effect. Experiments show that compared with the traditional wavelet packet-based control method, the control method proposed in this paper improves the control effect by 4.5%.
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Ghaani Farashahi, Arash. "Square-integrability of metaplectic wave-packet representations onL2(R)." Journal of Mathematical Analysis and Applications 449, no. 1 (May 2017): 769–92. http://dx.doi.org/10.1016/j.jmaa.2016.12.033.

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Gorman, Arthur D., and Huijun Yang. "Caustic consideration of long planetary wave packet analysis in the continuously stratified ocean." International Journal of Mathematics and Mathematical Sciences 25, no. 1 (2001): 63–72. http://dx.doi.org/10.1155/s0161171201005002.

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The wave packet method, one form of the WKB technique, recently has been employed to investigate the evolution of long planetary wave packets in relation to the complex climate variability in the world oceans. However, such a method becomes invalid near the caustics. Here, the Lagrange manifold formalism is used to extend this analysis to include the caustic regions. We conclude that even though the wave packet method fails near the caustics, the equations derived from this method away from caustics are identical to ones from the Lagrange manifold formalism near caustics
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Ghosh, Suranjana, and J. Banerji. "A time–frequency analysis of wave packet fractional revivals." Journal of Physics B: Atomic, Molecular and Optical Physics 40, no. 17 (August 28, 2007): 3545–53. http://dx.doi.org/10.1088/0953-4075/40/17/021.

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Mies, F. H., and A. Giusti-Suzor. "Wave-packet analysis of laser-induced half-collision processes." Physical Review A 44, no. 11 (December 1, 1991): 7547–59. http://dx.doi.org/10.1103/physreva.44.7547.

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Dissertations / Theses on the topic "Wave-packet analysis"

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Win, Htoo Aung. "BSM Message and Video Streaming Quality Comparative Analysis Using Wave Short Message Protocol (WSMP)." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538706/.

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Vehicular ad-hoc networks (VANETs) are used for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications. The IEEE 802.11p/WAVE (Wireless Access in Vehicular Environment) and with WAVE Short Messaging Protocol (WSMP) has been proposed as the standard protocol for designing applications for VANETs. This communication protocol must be thoroughly tested before reliable and efficient applications can be built using its protocols. In this paper, we perform on-road experiments in a variety of scenarios to evaluate the performance of the standard. We use commercial VANET devices with 802.11p/WAVE compliant chipsets for both BSM (basic safety messages) as well as video streaming applications using WSMP as a communication protocol. We show that while the standard performs well for BSM application in lightly loaded conditions, the performance becomes inferior when traffic and other performance metric increases. Furthermore, we also show that the standard is not suitable for video streaming due to the bursty nature of traffic and the bandwidth throttling, which is a major shortcoming for V2X applications.
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Books on the topic "Wave-packet analysis"

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Wave packet analysis. Providence, R.I: Published for the Conference Board of the Mathematical Sciences by the American Mathematical Society, 2005.

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Nicola, Fabio, and S. Ivan Trapasso. Wave Packet Analysis of Feynman Path Integrals. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8.

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Trapasso, S. Ivan, and Fabio Nicola. Wave Packet Analysis of Feynman Path Integrals. Springer International Publishing AG, 2022.

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Jones, Kent Leslie. An analysis of predictive adaptive routing in a HF packet radio network. 1994.

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Horing, Norman J. Morgenstern. Superfluidity and Superconductivity. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198791942.003.0013.

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Chapter 13 addresses Bose condensation in superfluids (and superconductors), which involves the field operator ψ‎ having a c-number component (<ψ(x,t)>≠0), challenging number conservation. The nonlinear Gross-Pitaevskii equation is derived for this condensate wave function<ψ>=ψ−ψ˜, facilitating identification of the coherence length and the core region of vortex motion. The noncondensate Green’s function G˜1(1,1′)=−i<(ψ˜(1)ψ˜+(1′))+> and the nonvanishing anomalous correlation function F˜∗(2,1′)=−i<(ψ˜+(2)ψ˜+(1′))+> describe the dynamics and elementary excitations of the non-condensate states and are discussed in conjunction with Landau’s criterion for viscosity. Associated concepts of off-diagonal long-range order and the interpretation of <ψ> as a superfluid order parameter are also introduced. Anderson’s Bose-condensed state, as a phase-coherent wave packet superposition of number states, resolves issues of number conservation. Superconductivity involves bound Cooper pairs of electrons capable of Bose condensation and superfluid behavior. Correspondingly, the two-particle Green’s function has a term involving a product of anomalous bound-Cooper-pair condensate wave functions of the type F(1,2)=−i<(ψ(1)ψ(2))+>≠0, such that G2(1,2;1′,2′)=F(1,2)F+(1′,2′)+G˜2(1,2;1′,2′). Here, G˜2 describes the dynamics/excitations of the non-superfluid-condensate states, while nonvanishing F,F+ represent a phase-coherent wave packet superposition of Cooper-pair number states and off-diagonal long range order. Employing this form of G2 in the G1-equation couples the condensed state with the non-condensate excitations. Taken jointly with the dynamical equation for F(1,2), this leads to the Gorkov equations, encompassing the Bardeen–Cooper–Schrieffer (BCS) energy gap, critical temperature, and Bogoliubov-de Gennes eigenfunction Bogoliubons. Superconductor thermodynamics and critical magnetic field are discussed. For a weak magnetic field, the Gorkov-equations lead to Ginzburg–Landau theory and a nonlinear Schrödinger-like equation for the pair wave function and the associated supercurrent, along with identification of the Cooper pair density. Furthermore, Chapter 13 addresses the apparent lack of gauge invariance of London theory with an elegant variational analysis involving re-gauging the potentials, yielding a manifestly gauge invariant generalization of the London equation. Consistency with the equation of continuity implies the existence of Anderson’s acoustic normal mode, which is supplanted by the plasmon for Coulomb interaction. Type II superconductors and the penetration (and interaction) of quantized magnetic flux lines are also discussed. Finally, Chapter 13 addresses Josephson tunneling between superconductors.
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Book chapters on the topic "Wave-packet analysis"

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Huang, Ying, and Bruce Suter. "The Fractional Wave Packet Transform." In Recent Developments in Time-Frequency Analysis, 67–70. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-2838-5_8.

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Nicola, Fabio, and S. Ivan Trapasso. "Semiclassical Gabor Analysis." In Wave Packet Analysis of Feynman Path Integrals, 109–16. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_5.

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Nicola, Fabio, and S. Ivan Trapasso. "The Gabor Analysis of Functions." In Wave Packet Analysis of Feynman Path Integrals, 39–72. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_3.

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Nicola, Fabio, and S. Ivan Trapasso. "The Gabor Analysis of Operators." In Wave Packet Analysis of Feynman Path Integrals, 73–108. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_4.

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Nicola, Fabio, and S. Ivan Trapasso. "Basic Facts of Classical Analysis." In Wave Packet Analysis of Feynman Path Integrals, 27–38. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_2.

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Nicola, Fabio, and S. Ivan Trapasso. "Itinerary: How Gabor Analysis Met Feynman Path Integrals." In Wave Packet Analysis of Feynman Path Integrals, 1–24. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_1.

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Nicola, Fabio, and S. Ivan Trapasso. "Convergence in the Lp Setting." In Wave Packet Analysis of Feynman Path Integrals, 183–97. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_9.

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Nicola, Fabio, and S. Ivan Trapasso. "Pointwise Convergence of the Integral Kernels." In Wave Packet Analysis of Feynman Path Integrals, 119–44. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_6.

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Nicola, Fabio, and S. Ivan Trapasso. "Convergence in $$\mathcal {L}(L^2)$$ for Potentials in Kato-Sobolev Spaces." In Wave Packet Analysis of Feynman Path Integrals, 161–81. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_8.

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Nicola, Fabio, and S. Ivan Trapasso. "Convergence in $$\mathcal {L}(L^2)$$ for Potentials in the Sjöstrand Class." In Wave Packet Analysis of Feynman Path Integrals, 145–59. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06186-8_7.

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Conference papers on the topic "Wave-packet analysis"

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Prasad, Akhilesh, Manoj Kumar Singh, and Manish Kumar. "The continuous fractional wave packet transform." In 11TH INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2013: ICNAAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4825631.

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Yermolaev, Yury G., Aleksey A. Yatskikh, Alexander D. Kosinov, and Nickolay V. Semionov. "Wave analysis of the evolution of a single wave packet in supersonic boundary layer." In INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2016): Proceedings of the 18th International Conference on the Methods of Aerophysical Research. Author(s), 2016. http://dx.doi.org/10.1063/1.4963979.

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Kercel, Stephen W., Marvin B. Klein, and Bruno F. Pouet. "Wavelet and wavelet-packet analysis of Lamb wave signatures in laser ultrasonics." In AeroSense 2000, edited by Harold H. Szu, Martin Vetterli, William J. Campbell, and James R. Buss. SPIE, 2000. http://dx.doi.org/10.1117/12.381692.

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Wang, Q., J. H. Gao, and N. H. Liu. "Application of the Synchrosqueezed Wave Packet Transform in Seismic Time-frequency Analysis." In 78th EAGE Conference and Exhibition 2016. Netherlands: EAGE Publications BV, 2016. http://dx.doi.org/10.3997/2214-4609.201601390.

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Shugan, Igor, Sergei Kuznetsov, Yana Saprykina, and Yang-Yih Chen. "Nonlinear Airy Wave Pulses on the Sea Surface." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96298.

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Abstract The possibility of self-acceleration of the water-wave pulse with a permanent envelope in the form of the nonlinear Airy function during its long propagation in deep water is experimentally and theoretically analyzed. This wave packet has amazing properties — accelerates without any external force, and preserves shape in a dispersive medium. The inverted Airy envelope wave function can propagate at velocity that is faster than the group velocity. We experimentally study the behavior of Airy water-wave pulses in a super-tank and long scaled propagation, to investigate its main properties, nonlinear effects and stability. Theoretical modeling analysis is based on the nonlinear Schrodinger equation. We investigate the scope of applicability, feasibility and stability conditions of nonlinear Airy wave trains in the deep water conditions; defining regimes of self-acceleration of the main pulse, immutability shape of Airy envelope; assessing the impact of nonlinearity and dissipation on the propagation of Airy waves. We analyzed the influence of the initial pulse characteristics on self-acceleration of wave packet and the stability of the envelope form. The anticipated results allow extending the physical understanding of the evolution of nonlinear dispersive waves in a wide range of initial conditions and at different spatial and temporal scales, from both theoretical and experimental points of view. Steep waves start to become an unstable, we observe spectrum widening and downshifting. Wave propagation is accompained by the intensive wave breaking and the generation of water-wave solitons.
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Al-Badour, Fadi, Lahouari Cheded, and M. Sunar. "New Approach for the Indirect Detection of Blade-to-Stator Rubbing in Turbo-Machinery Using Wavelet Techniques." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20072.

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This paper introduces an efficient and powerful approach to fault detection in rotating machinery using time-frequency analysis based on the wavelet transform of the monitored shaft vibration signal. Wavelet techniques are one of the latest powerful tools in analyzing the transient information for condition monitoring and fault detection using vibration signature. The proposed technique combines both the Continuous Wavelet and the Wavelet Packet Transforms. In particular, it exploits the use of the modulus of the local maxima lines in the wavelet domain, to detect impulsive mechanical faults through shaft vibration such as impact blade-to-stator rubbing in turbo machinery. The proposed new wavelet-based signal processing method was able to detect the singularity in the measured shaft vibration, which was generated by blade rubbing. The singularity detection achieved by the new method was very well supported by its counterpart based on the direct blade vibration measurements. Our proposed technique was favorably compared with both the time wave and the traditional Fourier Transform techniques. In fact, both the analysis and the extensive simulation work show the superiority of the combined approach (Wavelet Packet Transform and Maxima Lines) over the traditional Fourier-based method, in reliably diagnosing impulsive mechanical faults.
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Shutin, Dmitriy V., and Alexander M. Akhmetshin. "Texture analysis of tissue structures as a task of nonlinear identification on base of wave-packet decomposition." In EOS/SPIE European Biomedical Optics Week, edited by Israel Gannot, Yuri V. Gulyaev, Theodore G. Papazoglou, and Christiaan F. P. van Swol. SPIE, 2001. http://dx.doi.org/10.1117/12.413805.

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Ichiji, Naoki, Murat Yessenov, Kenneth L. Schepler, Ayman F. Abouraddy, and Atsushi Kubo. "Propagation analysis of space-time surface plasmon polariton wave packet excited by light irradiation on nanobeam structure." In Ultrafast Phenomena and Nanophotonics XXVI, edited by Markus Betz and Abdulhakem Y. Elezzabi. SPIE, 2022. http://dx.doi.org/10.1117/12.2607690.

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Serdyukov, Aleksander S., and Alexandr V. Yablokov. "Multi–channel filtration of surface seismic waves based on the application of the main components method to frequency–time data representations." In Недропользование. Горное дело. Направления и технологии поиска, разведки и разработки месторождений полезных ископаемых. Экономика. Геоэкология. Федеральное государственное бюджетное учреждение науки Институт нефтегазовой геологии и геофизики им. А.А. Трофимука Сибирского отделения Российской академии наук, 2020. http://dx.doi.org/10.18303/b978-5-4262-0102-6-2020-065.

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A new method of spectral processing of multichannel data of surface waves is proposed. The basis of the method is the separation of the surface–wave packet by applying the analysis of the main components in the time–frequency domain. The advantages of the new method are demonstrated by the example of field data processing.
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Chen, Liang, and Satish Kumar. "Heat Pulse Analysis in Single-Wall and Double-Wall Carbon Nanotubes." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40637.

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This paper investigates thermal transport in single wall carbon nanotubes (SWCNTs) and the interfacial thermal interaction in double-wall carbon nanotubes (DWCNTs) using molecular dynamics (MD) simulation and wavelet methods. The simulations are performed on three groups of carbon nanotubes (CNTs), as shown in Figure 1: 200 nm SWCNTs, 200 nm DWCNTs with 50 nm cut in the middle, and 100 nm complete DWCNTs. A heat pulse is applied in the middle of the CNTs, and wavelike responses of temperature as well as its three components (radial, tangential, and longitudinal) along the CNTs are analyzed to explore the underlying thermal transport mechanism. Wavelet analysis is carried out on the three components of velocity to investigate the evolution of frequency spectrum along CNTs in time. The heat pulse analysis in SWCNTs shows that the longitudinal components propagate as the leading wave packet of heat at the largest speed but only carry a small fraction of the total energy. The high frequency radial components carry most of the energy and dominate in the middle diffusion regions. In DWCNTs, the radial components and tangential components carry most of the total energy while the longitudinal components carry only a small fraction of the total energy. We observe dramatic energy transfer from outer tube to inner tube of a DWCNT without any cut during the heating period. This energy transferred to inner tube is primarily contained in the slowly moving radial modes indicating that energy can be transferred effectively by the radial modes. However, the energy transfer between tubes of DWCNTs through tangential and longitudinal components is quite ineffective.
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