404 citations · 1.1k across the 15 of their papers we have counts for
15 papers
Intrinsic thermal conductivity of ZrC from low to ultra-high temperatures: A critical revisit
Janak Tiwari, Tianli Feng
Current phonon transport theory based on ground-state calculations has been successful in predicting thermal conductivity at room and medium temperatures but may misrepresent behav…
Wide-range continuous tuning of the thermal conductivity of films via room-temperature ion-gel gating
Yingying Zhang, William M. Postiglione, Rui Xie +8
Solid-state control of the thermal conductivity of materials is of exceptional interest for novel devices such as thermal diodes and switches. Here, we demonstrate the ability to c…
Raman Linewidth Contributions from Four-Phonon and Electron-Phonon Interactions in Graphene
Zherui Han, Xiaolong Yang, Sean E. Sullivan +4
The Raman peak position and linewidth provide insight into phonon anharmonicity and electron-phonon interactions (EPI) in materials. For monolayer graphene, prior first-principles…
FourPhonon: An extension module to ShengBTE for computing four-phonon scattering rates and thermal conductivity
Zherui Han, Xiaolong Yang, Wu Li +2
FourPhonon is a computational package that can calculate four-phonon scattering rates in crystals. It is built within ShengBTE framework, which is a well-recognized lattice thermal…
Quantum Prediction of Ultra-Low Thermal Conductivity in Lithium Intercalation Materials
Tianli Feng, Andrew O'Hara, Sokrates T. Pantelides
Lithium-intercalated layered transition-metal oxides, LixTMO2, brought about a paradigm change in rechargeable batteries in recent decades and show promise for use in memristors, a…
A Unified Phonon Interpretation for the Non-Fourier Heat Conduction by Non-equilibrium Molecular Dynamics Simulations
Yue Hu, Xiaokun Gu, Tianli Feng +2
Nanoconfinement induces many intriguing non-Fourier heat conduction phenomena that have been extensively studied in recent years, such as the nonlinear temperature profile inside t…
Four-phonon scattering diminishes the optical phonon contribution and isotope effect to thermal conductivity of III-V semiconductors
Xiaolong Yang, Tianli Feng, Ju Li +1
Recent studies reveal that four-phonon scattering is generally important in determining thermal conductivities of solids. However, these studies have been focused on materials wher…
Role of higher-order phonon scattering in the zone-center optical phonon linewidth and the Lorenz oscillator model
Xiaolong Yang, Tianli Feng, Joon Sang Kang +3
Zone-center optical phonon linewidth is a key parameter for infrared and Raman spectra as well as the Lorenz oscillator model. While three-phonon scattering was often assumed to be…
Phonon anharmonic frequency shift induced by four-phonon scattering calculated from first principles
Tianli Feng, Xiaolong Yang, Xiulin Ruan
Phonon energies at finite temperatures shift away from their harmonic values due to anharmonicity. In this paper, we have realized the rigorous calculation of phonon energy shifts…
Diffuson-driven Ultralow Thermal Conductivity in Amorphous Nb2O5 Thin Films
Zhe Cheng, Alex Weidenbach, Tianli Feng +9
Niobium pentoxide (Nb2O5) has been extensively reported for applications of electrochemical energy storage, memristors, solar cells, light emitting diodes (LEDs), and electrochromi…
Tunable Thermal Energy Transport across Diamond Membranes and Diamond-Si Interfaces by Nanoscale Graphoepitaxy
Zhe Cheng, Tingyu Bai, Jingjing Shi +14
The development of electronic devices, especially those that involve heterogeneous integration of materials, has led to increased challenges in addressing their thermal operational…
Spectral analysis of non-equilibrium molecular dynamics: spectral phonon temperature and phonon local non-equilibrium in thin films and across interfaces
Tianli Feng, Wenjun Yao, Zuyuan Wang +4
Although extensive experimental and theoretical works have been conducted to understand the ballistic and diffusive phonon transport in nanomaterials recently, direct observation o…
Thermal Transport at the Nanoscale - A Fourier's Law vs. Phonon Boltzmann Equation Study
Jan Kaiser, Tianli Feng, Jesse Maassen +3
Steady-state thermal transport in nanostructures with dimensions comparable to the phonon mean-free-path is examined. Both the case of contacts at different temperatures with no in…
Coupling between Phonon-Phonon and Phonon-Impurity Scattering: A Critical Revisit of the Spectral Matthiessen's Rule
Tianli Feng, Bo Qiu, Xiulin Ruan
The spectral Matthiessen's rule is commonly used to calculate the total phonon scattering rate when multiple scattering mechanisms exist. Here we predict the spectral phonon relaxa…
Quantum mechanical prediction of four-phonon scattering rates and reduced thermal conductivity of solids
Tianli Feng, Xiulin Ruan
Recently, first principle-based prediction of lattice thermal conductivity from the perturbation theory has achieved significant success. However, it only includes three-phonon…