Review articles or book
chapters:
[6] T.L. Feng and X.L. Ruan,
"Higher-order phonon scattering: Advancing the quantum
theory of phonon linewidth, thermal conductivity, and
thermal radiative properties'', book
chapter in "Nanoscale energy transport'', IOP Publishing (2020).
[PDF]
[5] Z.X. Lu and X.L. Ruan, "Non-equilibrium
thermal transport: a review of applications and simulation
approaches," ES Energy & Environment 4, 5-14 (2019). [PDF].
[4] L. Lindsay, C. Hua, X.L. Ruan, and
S. Lee, "Survey of ab initio phonon thermal transport,"
Materials Today Physics 7, 106-120 (2018). [PDF]
[3] Y.
Wang, A. Vallabhaneni, B. Qiu, and X.L. Ruan,
"Two-dimensional thermal transport in graphene: a review of
numerical modeling studies", Nanoscale and Microscale
Thermophysical Engineering
18,
155-182, (2014). (invited review paper) [PDF]
[2] T.L.
Feng and X.L. Ruan, "Prediction of spectral phonon
mean-free-path and thermal conductivity with applications to
thermoelectrics and thermal management: a review",
J.
Nanomat.
2014, 206370 (2014). (invited paper)
[PDF]
[1] X.L. Ruan and M. Kaviany, Advances in Laser Cooling
of Solids, J. Heat Transfer -Transactions of the ASME 129, 3-10, 2007. [PDF]
Journal papers:
2024
[162] Krutarth Khot, Prabudhya Roy Chowdhury, Xiulin Ruan, "Machine learning-based design optimization of aperiodic multilayer coatings for enhanced solar reflection," Int. J. Heat Mass Transf. 224, 125303 (2024). [PDF]
[161] Yue Hu, Jiaxuan Xu, Xiulin Ruan, Hua Bao, "Defect scattering can lead to enhanced phonon transport at nanoscale," Nat. Commun. 15, 3304 (2024). [PDF]
[160] Ziqi Guo, Zherui Han, Abdulaziz Alkandari, Krutarth Khot, Xiulin Ruan, "First-principles prediction of thermal conductivity of bulk hexagonal boron nitride," Appl. Phys. Lett. 124, 163906 (2024). [PDF]
[159] Dudong Feng, Xiaolong Yang, Zherui Han, and Xiulin Ruan, "Near-field radiation in BAs and BSb dominated by four-phonon scattering," Phys. Rev. B 109, L081409 (2024). [PDF]
[158] Noor Mohammad Mohammad, Yun Zhang, Wenhui Xu, Sai Swapneel Aranke, Daniel Carne, Pengfei Deng, Fengyin Du, Xiulin Ruan, and Tian Li, "Highly Tunable Cellulosic Hydrogels with Dynamic Solar Modulation for Energy-Efficient Windows," Small 2303706 (2024). [PDF]
[157] Ziqi Guo, Zherui Han, Dudong Feng, Guang Lin, and Xiulin Ruan, "Sampling-accelerated pre-diction of phonon scattering rates for converged thermal conductivity and radiative proper-ties," npj Computational Materials 10, 31 (2024). [PDF]
[156] Daniel Carne, Joseph Peoples, Fredrik Arentz, and Xiulin Ruan, "True benefits of multiple na-noparticle sizes in radiative cooling paints identified with machine learning," Int. J. Heat Mass Transf. 222, 125209 (2024). [PDF]
[155] Andrea Felicelli, Jie Wang, Dudong Feng, Endrina Forti, Sami El Awad Azrak, Joseph Peoples, Jeffrey Youngblood, George Chiu, and Xiulin Ruan, "Efficient radiative cooling of low-cost BaSO4 paint-paper dual-layer thin films," Nanophotonics, https://doi.org/10.1515/nanoph-2023-0642 (2024). [PDF]
[154] Jiawei Song, Zihao He, Chao Shen, Jie Zhu, Zhimin Qi, Xing Sun, Yizhi Zhang, Juncheng Liu, Xinghang Zhang, Xiulin Ruan, Peter Bermel, Haiyan Wang, "Design of All-Oxide Multilayers with High-Temperature Stability Toward Future Thermophotovoltaic Applications," Adv. Mater. Inter. 2300733 (2024). [PDF]
[153] Prabudhya Roy Chowdhury, Krutarth Khot, Jiawei Song, Zihao He, David Kortge, Zherui Han, Peter Bermel, Haiyan Wang, Xiulin Ruan, "Machine Learning Designed and Experimentally Confirmed Enhanced Reflectance in Aperiodic Multilayer Structures," Adv. Opt. Mater. 12, 2300610 (2024). [PDF]
2023
[152] Zherui Han, Zixin Xiong, William Riffe, Hunter Schonfeld, Mauricio Segovia, Jiawei Song, Haiyan Wang, Xianfan Xu, Patrick Hopkins, Amy Marconnet, and Xiulin Ruan, "Predictions and Measurements of Thermal Conductivity of Ceramic Materials at High Temperature", Phys. Rev. B 108, 184306 (2023). [PDF]
[151] Dudong Feng, Xiaolong Yang, and Xiulin Ruan, "Phonon Scattering Engineered Unconven-tional Thermal Radiation at the Nanoscale," Nano Lett. 23, 10044 (2023). [PDF]
[150] Zherui Han and Xiulin Ruan, "Thermal conductivity of monolayer graphene: Convergent and lower than diamond," Phys. Rev. B 108, L121412 (2023). [PDF]
[149] Changkyun Lee, David Kortge, Jie Zhu, Jiawei Song, Haiyan Wang, Xiulin Ruan, and Peter Bermel, "Temperature-dependent optical dispersion spectra for a single CeO2 thin-film layer in UV-vis and its reflection and transmission in the IR region," Journal of Optics 25, 085901 (2023). [PDF]
[148] Wenkai Zhu, Yun Zhang, Chi Zhang, Xiwei Shan, Akshay K Rao, Sarah L Pitts, Travest J Woodbury, Tanya Sophia Masnyk, Dominique Derome, David M Warsinger, Xiulin Ruan, Li-sa J Mauer, Jan Carmeliet, and Tian Li, "Radiative cooling sorbent towards all weather ambient water harvesting," Communications Engineering 2, 35 (2023) [PDF]
[147] Zherui Han, Changkyun Lee, Jiawei Song, Haiyan Wang, Peter Bermel, and Xiulin Ruan, "Temperature-dependent full spectrum dielectric function of semiconductors from first principles," Phys. Rev. B 107, L201202 (2023). [PDF]
[146] Ziqi Guo, Prabudhya Roy Chowdhury, Zherui Han, Yixuan Sun, Dudong Feng, Guang Lin, and Xiulin Ruan, "Fast and Accurate Machine Learning Prediction of Phonon Scattering Rates and Lattice Thermal Conductivity," npj Computational Materials 95, 1 (2023). [PDF]
[145] Daniel Carne, Joseph Peoples, Dudong Feng, and Xiulin Ruan, "Accelerated Prediction of Photon Transport in Nanoparticle Media Using Machine Learning Trained With Monte Carlo Simulations," ASME Journal of Heat and Mass Transffer 145, 052502 (2023). [PDF]
[144] Zherui Han, Peter Sokalski, Li Shi, and Xiulin Ruan, "Prediction of hot zone-center optical phonons in laser-irradiated molybdenum disulfide with a semiconductor multitemperature model," Physical Review B 107 (4), L041407 (2023) [PDF]
2022
[143] Dudong Feng, Xiulin Ruan, Shannon K Yee, and Zhuomin Zhang, "Thermoradiative devices enabled by hyperbolic phonon polaritons at nanoscales," Nano Energy 103, 107831 (2022). [PDF]
[142] Pai-Ying Liao, Krutarth Khot, Sami Alajlouni, Mike Snure, Jinhyun Noh, Mengwei Si, Zhuocheng Zhang, Ali Shakouri, Xiulin Ruan, and Peide Ye, "Alleviation of Self-Heating Effect in Top-Gated Ultrathin In 2 O 3 FETs Using a Thermal Adhesion Layer," IEEE Tran. Electron. Dev. (2022) [PDF]
[141] Peter Sokalski, Zherui Han, Gabriella Coloyan Fleming, Brandon Smith, Sean E Sullivan, Rui Huang, Xiulin Ruan, and Li Shi, "Effects of hot phonons and thermal stress in micro-Raman spectra of molybdenum disulfide," Appl. Phys. Lett. 121, 182202 (2022). [PDF]
[140] Zixin Xiong, Amy Marconnet, and Xiulin Ruan, "Unconventional and Dynamically Anisotropic Thermal Conductivity in Compressed Flexible Graphene Foams," ACS Appl. Mater. Interfaces 14, 48960 (2022). [PDF]
[139] Andrea Felicelli, Ioanna Katsamba, Fernando Barrios, Yun Zhang, Ziqi Guo, Joseph Peoples, George Chiu, and Xiulin Ruan, "Thin layer lightweight and ultrawhite hexagonal boron nitride nanoporous paints for daytime radiative cooling," Cell Reports Physical Science 3, 101058 (2022). [PDF]
[138] Yanhua Cheng, Jinlong Ma, Yaxin Xu, Guoqing Sun, Xiulin Ruan, and Xiaobing Luo, "Evolution of in-plane heat transport in tellurium from 2D to 3D," Materials Today Physics 27, 100776 (2022). [PDF]
[137] J. Peoples, Y.W. Hung, Z.Q. Fang, J. Braun, W.T. Horton, X.L. Ruan, "Energy savings of radiative cooling paints applied to residential buildings," Int. J. Heat Mass Transf. 194, 123001 (2022). [PDF]
[136] Y.H. Cheng, X.L. Yang, Z.R. Han, W.Z. Wu, X.B. Luo, X.L. Ruan, "Abnormal in-plane thermal conductivity anisotropy in bilayer a-phase tellurene," Int. J. Heat Mass Transf. 192, 122908 (2022). [PDF]
[135] H. Wei, Y. Hu, H. Bao, and X.L. Ruan, "Quantifying the diverse wave effects in thermal transport of nanoporous graphene," Carbon 197, 18-26 (2022). [PDF]
[134] J. Peoples, F. Arentz, Y.Z. Fang, C. Mohan, J. Li, X.Y. Li, X.L. Ruan, "Lifespan and efficiency gain for outdoor electronic systems from radiative cooling: A case study on distribution transformers," Appl. Thermal Engineering 213, 118636 (2022). [PDF]
[133] Han Wei, Hua Bao, and Xiulin Ruan, "Perspective: predicting and optimizing thermal transport properties with machine learning methods," Energy and AI 8, 100153 (2022). [PDF]
[132] Xiaolong Yang, Tianli Feng, Ju Li, and Xiulin Ruan, "Evidence of five-order and higher-order phonon scattering entropy of zone-center optical phonons," Phys. Rev. B, 105, 115205 (2022). [PDF]
[131] Zhen Tong, Joseph Peoples, Xiangyu Li, Xiaolong Yang, Hua Bao, and Xiulin Ruan, "Electronic and Phononic Origins of BaSO4 as an ultra-efficient radiative cooling paint pigment," Materials Today Physics 24, 100658 (2022). [PDF]
[130] Jinhyun Noh, Prabudhya Roy Chowdhury, Mauricio Segovia, Sami Alajlouni, Mengwei Si, Adam R. Charnas, Shouyuan Huang, Kerry Maize, Ali Shakouri, Xianfan Xu, Xiulin Ruan, and Peide D. Ye, "Enhancement of Thermal Transfer From ß-Ga2O3 Nano-Membrane Field-Effect Transistors to High Thermal Conductivity Substrate by Inserting an Interlayer," IEEE Trans. Electron Devices (2022). [PDF]
[129] Zherui Han, Xiaolong Yang, Sean E. Sullivan, Tianli Feng, Li Shi, Wu Li, and Xiulin Ruan, "Raman Linewidth Contributions from Four-Phonon and Electron-Phonon Interactions in Graphene," Phys. Rev. Lett. 128, 045901 (2022). [PDF]
[128] Yun Zhang, Wenkai Zhu, Chi Zhang, Joseph Peoples, Xuan Li, Andrea Lorena Felicelli, Xiwei Shan, David M Warsinger, Theodorian Borca-Tasciuc, Xiulin Ruan, Tian Li, "Atmospheric water harvesting by large-scale radiative cooling cellulose-based fabric," Nano Lett. 22, 2618-2626 (2022). [PDF]
[127] Joseph Peoples, Yu-Wei Hung, Xiangyu Li, Daniel Gallagher, Nathan Fruehe, Mason Pottschmidt, Cole Breseman, Conrad Adams, Anil Yuksel, James Braun,
Travis Horton, and Xiulin Ruan, "Concentrated Radiative Cooling," Applied Energy 310, 118368 (2022). [PDF]
[126] Prabudhya Roy Chowdhury and Xiulin Ruan, "Unexpected thermal conductivity enhancement in aperiodic superlattices discovered using active machine learning," npj Comp. Mater. 8, 12 (2022). [PDF]
[125] Zherui Han, Xiaolong Yang, Wu Li, Tianli Feng, and Xiulin Ruan, "FourPhonon: An extension module to ShengBTE for computing four-phonon scattering rates and thermal conductivity", Com. Phys. Commun. 270, 108179 (2022). [PDF]
2021
[124] Zhe Li, Yang Xiao, Prabudhya Roy Chowdhury, Zhenwei Wu, Tao Ma, Johnny Zhu Chen, Gang Wan, Tae-Hoon Kim, Dapeng Jing, Peilei He, Pratik J. Potdar, Lin Zhou, Zhenhua Zeng, Xiulin Ruan, Jeffrey T. Miller, Jeffrey P. Greeley, Yue Wu, Arvind Varma, "Direct methane activation by atomically thin platinum nanolayers on two-dimensional metal carbides", Nature Catalysis 4, 882-891 (2021). [PDF]
[123] J Xu, Y Hu, X Ruan, X Wang, T Feng, and H Bao, "Nonequilibrium phonon transport induced by finite sizes: Effect of phonon-phonon coupling," Phys. Rev. B 104, 104310 (2021). [PDF]
[122] Tingting Du, Zixin Xiong, Luis Delgado, Weizhi Liao, Joseph Peoples, Rajath Kantharaj, Prabudhya Roy Chowdhury, Amy Marconnet, and Xiulin Ruan, "Wide range continuously tunable and fast thermal switching based on compressible graphene composite foams", Nature Communications 12, 4915 (2021). [PDF]
[121] Xiangyu Li, Joseph Peoples, Peiyan Yao, and Xiulin Ruan, "Ultrawhite BaSO4 Paints and Films for Remarkable Daytime Subambient Radiative Cooling," ACS Appl. Mater. Interfaces, 13, 21733-21739 (2021). [PDF]
[120] Ashis Kundu, Xiaolong Yang, Jinlong Ma, Tianli Feng, Jesus Carrete, Xiulin Ruan, Georg K. H. Madsen, and Wu Li, "Ultrahigh thermal conductivity in theta-phase tantalum nitride," Phys. Rev. Lett.126, 115901 (2021). [PDF]
[119] Prabudhya Roy Chowdhury, Jingjing Shi, Tianli Feng and Xiulin Ruan, "Prediction of Bi2Te3-Sb2Te3 Interfacial Conductance and Superlattice Thermal Conductivity Using Molecular Dy-namics Simulations," ACS Appl. Mater. Interfaces 13, 4636-4642 (2021). [PDF]
2020:
[118] Xiangyu Li, Joseph Peoples, Zhifeng Huang, Zixuan Zhao, Jun Qiu, and Xiulin Ruan, "Full Daytime Sub-Ambient Radiative Cooling in Commercial-like Paints with High Figure of Merit", Cell Rep. Phys. Sci. 1, 100221 (2020). [PDF]
[117] Han Wei, Hua Bao, and Xiulin Ruan,
"Machine learning prediction of thermal transport in porous
media with physics-based descriptors", Int. J. Heat Mass
Transfer 160, 120176 (2020). [PDF]
[116] Yixiu Luo, Xiaolong Yang, Tianli
Feng, Jingyang Wang, and Xiulin Ruan, "Vibrational hierarchy
leads to dual-phonon transport in low thermal conductivity
crystals", Nat.
Commun. 11, 2554 (2020). [PDF]
[115] Xiaolong Yang, Tianli Feng, Joon
Sang Kang, Yongjie Hu, Ju Li, and Xiulin Ruan, "Observation
of strong higher-order lattice anharmonicity in Raman and
infrared response", Phys. Rev. B 101, 161202(R)
(2020). [PDF]
Scientific news coverage:
Four-phonon scattering in infrared and Raman demonstrated
for the first time,
https://engineering.purdue.edu/ME/News/2020/fourphonon-scattering-affects-materials-infrared-and-raman-spectra.
[114] Evan Witkoske, Zhen Tong, Yining
Feng, Xiulin Ruan, Mark Lundstrom, and Na Lu, "The use of
strain and grain boundaries to tailor phonon transport
properties: A first-principles study of 2H-phase CuAlO2.
II", J. Appl. Phys. 127, 115108 (2020). [PDF]
[113] Zhen Tong, Xiaolong Yang, Tianli
Feng, Hua Bao, and Xiulin Ruan, "First-principles
predictions of temperature-dependent infrared dielectric
function of polar materials by including four-phonon
scattering and phonon frequency shift", Phys. Rev. B
101, 125416 (2020). [PDF]
[112] Han Wei, Hua Bao, and Xiulin Ruan,
"Genetic algorithm-driven discovery of unexpected thermal
conductivity enhancement by disorder", Nano Energy
71, 104619
(2020). [PDF]
[111] Prabudhya R. Chowdhury, Colleen
Reynolds, Adam Garrett, Tianli Feng, Shashishekar P. Adiga,
and Xiulin Ruan, "Machine learning-maximized
Anderson localization in random multilayers", Nano Energy
69, 104428 (2020). [PDF]
Scientific news coverage:
Machine learning discovers unexpected behavior in
superlattices,
https://engineering.purdue.edu/ME/News/2020/machine-learning-in-superlattices.
[110]
Shouyuan Huang, Mauricio Segovia, Xiaolong Yang, Yee Rui Koh,
Yixiu Wang, D Ye Peide, Wenzhuo Wu, Ali Shakouri, Xiulin
Ruan, and Xianfan Xu, "Anisotropic
thermal conductivity in 2D tellurium", 2D Materials
7, 015008 (2020). [PDF]
2019:
[109] Xiaolong Yang, Tianli Feng, Ju
Li, and Xiulin Ruan, "Four-phonon scattering diminishes the
optical phonon contribution and isotope effect to thermal
conductivity of III-V semiconductors", Phys. Rev. B
100, 245203 (2019). [PDF]
[108] Yuanchen Chu, Jingjing Shi, Kai
Miao, Yang Zhong, Prasad Sarangapani, Tim Fisher, Gerhard
Klimeck, Xiulin Ruan, Tillmann Kubis, "Thermal boundary
resistance predictions with non-equilibrium Green's function
and molecular dynamics simulations", Appl. Phys. Lett.
115, 231601 (2019). [PDF]
[107]
Zhen Tong, Shouhang Li, Xiulin Ruan, and Hua Bao, "Comprehensive
first-principles analysis of phonon thermal conductivity and
electron-phonon coupling in different metals",
Phys. Rev. B 100, 144306 (2019). [PDF]
[106]
Qin-Yi Li, Tianli Feng, Wakana Okita, Yohei Komori, Hiroo
Suzuki, Toshiaki Kato, Toshiro Kaneko, Tatsuya Ikuta, Xiulin
Ruan, and Koji Takahashi, "Enhanced Thermoelectric
Performance of As-Grown Suspended Graphene Nanoribbons",
ACS Nano 13, 9182-9189 (2019). [PDF]
[105] Z.X. Lu and
X.L. Ruan, "Non-equilibrium
thermal transport: a review of applications and simulation
approaches," ES Energy & Environment 4, 5-14 (2019).
[PDF]
[104] P.R. Chowdhury, T.L. Feng, and
X.L. Ruan, "Development of interatomic
potentials for the complex binary compound Sb2Te3
and the prediction of thermal conductivity," Phys. Rev. B
99, 155202 (2019). [PDF]
[103] Z.X. Lu, J.J. Shi, and X.L. Ruan,
"Role of phonon coupling and non-equilibrium near the
interface to interfacial thermal resistance: The
multi-temperature model and thermal circuit," J. Appl. Phys.
125, 085107 (2019). [PDF]
[102] X.L. Li, W.J. Park, Y. Wang, Y.P.
Chen, and X.L. Ruan, "Reducing interfacial thermal
resistance between metal and dielectric materials by a metal
interlayer," J. Appl. Phys. 125, 045302 (2019). [PDF]
[101] T.L. Feng, Y. Zhong, J.J. Shi,
and X.L. Ruan, "Unexpected high inelastic phonon transport
across solid-solid interface: Modal nonequilibrium
molecular dynamics simulations and Landauer analysis,"
Phys.
Rev. B 99, 045301 (2019). [PDF]
[100] J. Peoples, X.Y. Li, Y Lv, J Qiu,
Z.F. Huang, and X.L. Ruan, "A strategy of hierarchical
particle sizes in nanoparticle composite for enhancing solar
reflection," Int. J. Heat Mass Trans. 131, 487-494 (2019). [PDF]
2018:
[99] T. Jiang, Z.Y. Wang, X.L. Ruan,
and Y. Zhu, "Equi-biaxial compressive strain
in graphene: Grüneisen parameter and buckling ridges,"
2D Materials 6, 015026 (2018) [PDF]
[98] L. Lindsay, C. Hua, X.L. Ruan, and
S. Lee, "Survey of ab initio phonon thermal transport,"
Materials Today Physics 7, 106-120 (2018). [PDF]
[97] Z.X. Lu, A. Vallabhaneni, B.Y. Cao,
and X.L. Ruan, "Phonon branch-resolved electron-phonon
coupling and the multitemperature model," Phys. Rev. B
98, 134309 (2018). [PDF]
[96] T.L. Feng, X.L. Yang, and X.L.
Ruan, "Phonon anharmonic frequency shift induced by
four-phonon scattering calculated from first principles,"
J. Appl. Phys. 124, 145101 (2018). [PDF]
[95] J.J. Shi, J.H. Lee, Y.L. Dong, A.
Roy, T.S. Fisher, and X.L. Ruan, "Dominant phonon
polarization conversion across dimensionally mismatched
interfaces: Carbon-nanotube-graphene junction," Phys. Rev. B
97, 134309 (2018). [PDF]
[94] J.J. Shi, Y. Zhong, T.S. Fisher,
and X.L. Ruan, "Decomposition of thermal boundary resistance
across carbon nanotube-graphene junctions to different
mechanisms," ACS Appl. Mater. Interfaces 10, 15226-15231
(2018). [PDF]
[93] Z.Y Ong, B. Qiu, S.L. Xu, X.L.
Ruan, and E. Pop, "Flexural Resonance Mechanism of Thermal
Transport across Graphene-SiO2 Interfaces," J. Appl. Phys.
123, 115107 (2018). [PDF]
[92] Z. Lu, Y. Wang, and X.L. Ruan,
"The critical particle size for enhancing thermal
conductivity in metal nanoparticle-polymer composites,"
J. Appl. Phys. 123, 074302 (2018). [PDF]
[91]
B. Xu, T.L.
Feng, M.T. Agne, Q. Tan, Z. Li, K. Imasato, L. Zhou, J.H.
Bahk, X.L. Ruan, G.J. Snyder, and Y. Wu, "Manipulating Band
Structure through Reconstruction of Binary Metal Sulfide
towards High-Performance, Eco-Friendly and Cost-Efficient
Thermoelectrics in Nanostructured Bi13S18I2,"
Angew. Chem. Int.
Ed. 57, 2413-2418
(2018). [PDF]
[90] T.L. Feng and X.L. Ruan,
"Four-phonon scattering reduces intrinsic thermal
conductivity of graphene and the contributions from flexural
phonons," Phys. Rev. B 97, 045202 (2018). [PDF]
2017:
[89] S.V. Bhat, M. Dhanasekar, K.M. Rickey, and X.L. Ruan, "Facile
In Situ Growth of Nanostructured Copper Sulfide Films
Directly on FTO Coated Glass Substrate as Efficient Counter
Electrodes for Quantum DOt Sensitized Solar Cells,"
Chemistry Select 2, 10736-10740 (2017). [PDF]
[88]
X.W. Wu,
J. Walter, T.L. Feng, J. Zhu, H. Zheng, J.F.
Mitchell, N. Biškup, M. Varela, X.L. Ruan, C. Leighton, and
X.J. Wang, "Glass-like Through-Plane Thermal
Conductivity Induced by Oxygen Vacancies in Nanoscale
Epitaxial La0.5Sr0.5CoO3-δ,"
Adv. Funct. Mater. 1704233 (2017).
[PDF]
[87] T.L.
Feng, L. Lindsay, and X.L. Ruan, "Four phonon scattering
significantly reduces thermal conductivity is solids,"
Phys. Rev. B (Rapid Communications),
96,
161201(R) (2017). [PDF]
[86] X.L.
Li, W. Park, Y.P. Chen, and X.L. Ruan, "Absence of coupled
thermal interfaces in Al2O3/Ni/Al2O3
sandwich structure," Appl. Phys. Lett. 111,
143102 (2017). [PDF]
[85] H. Bao, C. Yan, B.X. Wang, X.
Fang, C.Y. Zhao, and X.L. Ruan, "Double-layer nanoparticle-based
coatings for efficient terrestrial radiative
cooling", Solar Energy Materials and Solar Cells 168, 78-84
(2017). [PDF]
[84] T.L. Feng, W.J. Yao, Z.Y. Wang,
J.J. Shi, C. Li, B.Y. Cao, and X.L. Ruan, "Spectral analysis
of nonequilibrium molecular dynamics: Spectral phonon
temperature and local nonequilibrium in thin films and
across interfaces", Phys. Rev. B 95, 195202 (2017). [PDF]
[83]
W.J. Park,
X.Y. Li, N. Mandal, X.L. Ruan, and Y.P. Chen, "Compressive
mechanical response of graphene foams and their thermal
resistance with copper interfaces", APL Materials 5, 036102
(2017). [PDF]
[82] Z.Y. Wang, S. Safarkhani,
G. Lin, and X.L. Ruan, "Uncertainty
quantification of thermal conductivities from equilibrium
molecular dynamics simulations", Int. J. Heat Mass
Transfer 112, 267-278 (2017). [PDF]
[81]
Sean Sullivan, Ajit
Vallabhaneni, Iskandar Kholmanov, Xiulin Ruan, Jayathi
Murthy, and Li Shi, "Optical
generation and detection of local nonequilibrium phonons in
suspended graphene", Nano Lett. 17, 2049−2056
(2017). [PDF]
[80]
J. Kaiser, T. Feng, J. Maassen, X. Wang, X. Ruan, and M.
Lundstrom, "Thermal transport at the nanoscale: A Fourier’s
law vs. phonon Boltzmann equation study", J. Appl. Phys.
121, 044302 (2017). [PDF]
[79]
Zuyuan Wang and Xiulin Ruan,
"On the domain size effect of thermal conductivities from
equilibrium and nonequilibrium molecular dynamics
simulations", J. Appl. Phys. 121, 044301 (2017). [PDF]
[78] Biao Xu, Tianli
Feng, Matthias T Agne, Lin Zhou, Xiulin Ruan, G Jeffery
Snyder, Yue Wu, "Highly
Porous Thermoelectric Nanocomposites with Low Thermal
Conductivity and High Figure of Merit from Large-Scale
Solution-Synthesized Bi2Te2.5Se0.5
Hollow Nanostructures", Angew. Chem. Int.
Ed., 129, 1-7,
(2017). [PDF]
[77] Biao Xu, Matthias T Agne, Tianli Feng,
Thomas C Chasapis, Xiulin Ruan, Yilong Zhou, Haimei Zheng,
Je-Hyeong Bahk, Mercouri G Kanatzidis, Gerald Jeffrey
Snyder, Yue Wu, "Nanocomposites
from Solution-Synthesized PbTe-BiSbTe Nanoheterostructure
with Unity Figure of Merit at Low-Medium Temperatures
(500-600 K)", Adv. Mater. 1605140 (2017).
[PDF]
[76] X.Y.
Li, W. Park, Y.P. Chen, and X.L. Ruan, "Effect of particle
size and aggregation on thermal conductivity of
metal-polymer nanocomposite",
J. Heat Transfer.
139, 022401
(2017). [PDF]
[75]
Zhifeng Huang, Xiulin Ruan, "Nanoparticle
embedded double-layer coating for daytime radiative
cooling", Int. J. Heat Mass Transfer 104,
890-896 (2017). [PDF]
2016:
[74] Y. Wang, Z.X. Lu,
and X.L. Ruan, "First principles calculation of lattice
thermal conductivity of metals considering phonon-phonon and
phonon-electron scattering", J.
Appl. Phys. 119 (22),
225109 (2016). [PDF]
[73] Z.Y. Wang and X.L.
Ruan, "Phonon spectral energy density analysis of solids:
The k point reduction in the first Brillouin zone of FCC
crystals and a case study on solid argon", Computational
Materials Science
121, 97-105 (2016). [PDF]
[72] S Sarbada, Z.F.
Huang, Y.C. Shin, and X.L. Ruan, "Low-reflectance
laser-induced surface nanostructures created with a
picosecond laser", Appl. Phys. A 122 (4), 1-10
(2016). [PDF]
[71] A.K. Vallabhaneni,
D. Singh, H. Bao, J.Y. Murthy, and X.L. Ruan, "Reliability
of Raman measurements of thermal conductivity of
single-layer graphene due to selective electron-phonon
coupling: a first principles study", Phys. Rev. B 93, 125432
(2016). [PDF]
[70] Z.X. Lu, Y. Wang,
and X.L. Ruan,
"Metal/dielectric thermal interfacial transport considering
cross-interface electron-phonon coupling: Theory,
two-temperature molecular dynamics, and thermal circuit",
Phys. Rev. B 93, 064302 (2016). [PDF]
[69] Y. Wang, Z.X. Lu, A.K. Roy, and X.L. Ruan, "Effect of
interlayer on interfacial thermal transport and hot electron
cooling in metal-dielectric systems: an electron-phonon
coupling perspective", J. Appl. Phys. 119, 065103 (2016). [PDF]
[68] T.L. Feng and X.L. Ruan, "Ultra-Low Thermal
Conductivity in Graphene Nanomesh", Carbon 101, 107-113
(2016). [PDF]
[67] H. Bao and X.L. Ruan, "Absorption Spectra and
Electron-Vibration Coupling of Ti: Sapphire From First
Principles", J. Heat Transfer 138, 042702 (2016). [PDF]
[66] T.L. Feng and X.L. Ruan, "Quantum mechanical prediction
of four-phonon scattering rates and reduced thermal
conductivity of solids", Phys. Rev. B 93, 045202 (2016). [PDF]
[65]
H.Y. Fang, J.H. Bahk, T.L. Feng, Z. Cheng, A.M.S. Mohammed,
X.W. Wang, X.L. Ruan, A. Shakouri, and Y. Wu,
"Thermoelectric properties of solution-synthesized n-type
Bi2Te3 nanocomposites modulated by Se: An experimental and
theoretical study", Nano Research 9, 117-127 (2016). [PDF]
2015:
[64] T.L. Feng, B. Qiu, and X.L. Ruan, "Coupling between
phonon-phonon and phonon-impurity scattering: A critical
revisit of the spectral Matthiessen's rule", Phys. Rev. B
92, 235206 (2015). [PDF]
[63]
J.
Park, Y.F. Guo, X.Y. Li*, J.N. Hu, L.W. Liu, X.L. Ruan,
and Y.P. Chen, "High-Performance Thermal Interface Material
Based on Few-Layer Graphene Composite", J. Phys. Chem. C
119, 26753−26759
(2015). [PDF]
[62] Rickey, Q. Nian, G.Q. Zhang, L.L. Chen, S. Suslov, S.V.
Bhat, Y. Wu, G.J. Cheng, and X.L. Ruan, "Welding of
Semiconductor Nanowires by Coupling Laser-Induced Peening
and Localized Heating", Scientific Reports 5, 16052 (2015).
[PDF]
[61]
Z.Q. Ye, B.Y. Cao, W.J. Yao, T.L. Feng, and X.L. Ruan,
"Spectral phonon thermal properties in graphene nanoribbons",
Carbon 93, 915-923 (2015). [PDF]
[60] J.J. Shi, Y.L. Dong, T.S. Fisher, and
X.L. Ruan, "Thermal transport across carbon
nanotube-graphene covalent and van der Waals junctions",
J. Appl. Phys. 118, 044302 (2015). [PDF]
[59]
T.L. Feng, X.L. Ruan, Z.Q. Ye, and B.Y. Cao, "Spectral
phonon mean free path and thermal conductivity accumulation
in defected graphene: The effects of defect type and
concentration", Phys. Rev. B 91, 224301
(2015). [PDF]
[58]
T.L. Feng and X.L. Ruan, "Anharmonicity
and necessity of phonon eigenvectors in the phonon normal
mode analysis", J. Appl. Phys. 117, 195102
(2015). [PDF]
[57] B. Qiu, Z.T. Tian, A.
Vallabhaneni, B.L. Liao, J.M. Mendoza, O.D. Restrepo, X.L.
Ruan, and G. Chen, "First-principles simulation of electron
mean-free-path spectra and thermoelectric properties in
silicon", EPL 109, 57006, (2015). [PDF]
[56] Y. Wang, C.J. Gu, and X.L.
Ruan, "Optimization of the random multilayer structure to
break the random-alloy limit of thermal conductivity",
Appl. Phys. Lett. 106, 073104 (2015). [PDF]
[55] Z.Y. Wang, T.L. Feng, and
X.L. Ruan, "Thermal conductivity and spectral phonon
properties of freestanding and supported silicene", J.
Appl. Phys. 117, 084317 (2015). [PDF]
[54] H. Bao, A. Kumar, Y. Cai,
Y. Ji, T.S. Fisher, and X.L. Ruan, Optical Properties of
Thin Graphitic Nanopetal Arrays, Journal of Quantitative
Spectroscopy and Radiative Transfer 158, 84-90
(2015). [PDF]
2014:
[53] Y. Wang, H.X. Huang, and
X.L. Ruan, "Decomposition of coherent and incoherent phonon
conduction in superlattices and random multilayers,"
Phys. Rev. B 90, 165406 (2014). [PDF]
[52] B.T. Spann, S.V. Bhat,
Q. Nian, K.M. Rickey, G.J. Cheng, X.L. Ruan, and X.F. Xu,
"Enhancing Photo-induced Ultrafast Charge Transfer across
Heterojunctions of CdS and Laser-Sintered TiO2 Nanocrystals,"
Phys. Chem. Chem. Phys.
16,
10669-10678
(2014).
[PDF]
[51]
P. Marepalli, B. Qiu, X.L. Ruan, and J.Y. Murthy,
"Quantifying Uncertainty in Multiscale Heat Conduction
Calculations", J. Heat Transfer 136, 111301
(2014) (2014). [PDF]
[50]
W. Park, J.N. Hu, L.A. Jauregui, X.L. Ruan,
and Y.P. Chen, " Electrical and thermal conductivities of
reduced graphene oxide/polystyrene composites", Appl.
Phys. Lett. 104, 113101 (2014). [PDF]
[49] Y.
Wang, A. Vallabhaneni, B. Qiu, and X.L. Ruan,
"Two-dimensional thermal transport in graphene: a review of
numerical modeling studies", Nanoscale and Microscale
Thermophysical Engineering
18,
155-182, (2014). (invited review paper) [PDF]
[48] T.L.
Feng and X.L. Ruan, "Prediction of spectral phonon
mean-free-path and thermal conductivity with applications to
thermoelectrics and thermal management: a review",
J.
Nanomat.
2014, 206370 (2014). (invited
review paper) [PDF]
[47] A. Sisto, X.L. Ruan, and T.S. Fisher, "Ab initio and Finite
Element Predictions of Radiative Properties of Nanostructure
Arrays: Single-Walled Carbon Nanotube Arrays",
J. Heat
Transfer
136, 62702 (2014). [PDF]
[46]
Y. Wang,
A. Vallabhaneni, J. Hu, B. Qiu, Y. Chen and X.L. Ruan,
"Phonon Lateral Confinement Enables Thermal Rectification in
Asymmetric Single-Material Nanostructures",
Nano
Lett.
14, 592 (2014). [PDF]
[45] H.
Bao, B. Duvvuri, M.H. Lou, and X.L. Ruan, "Effects of
Randomness and Inclination on the Optical Properties of
Multi-walled Carbon Nanotube Arrays", Journal of
Quantitative Spectroscopy and Radiative Transfer, 132,
22-27, 2014. [PDF]
2013:
[44] S.
Finefrock#, Y. Wang#, J. Ferguson, J.
Ward, H.Y. Fang, J. Pfluger, D. Dudis, X.L. Ruan*,
Y. Wu*, "Measurement of thermal conductivity of
PbTe nanocrystal coated glass fibers by the 3ω method",
Nano Lett. 13, 5006−5012, 2013. [PDF] (#co-first authors; *co-corresponding authors)
[43] J.
Zuidema, X.L. Ruan, and T.S. Fisher, "Optical Properties of
Ordered Carbon Nanotube Arrays Grown in Porous Anodic
Alumina Templates", Optics Express 21, 22053-22062,
2013. [PDF]
[42] L.L.
Chen, K.M. Rickey, Q. Zhao, C. Robinson, and X.L. Ruan,
"Effects of Nanocrystal Shape and Size on the Temperature
Sensitivity in Raman Thermometry", Appl. Phys. Lett.
103, 083107, 2013. [PDF]
[41] H.Y. Fang, T.L. Feng,
H.R. Yang, X.L. Ruan, and Y. Wu, "Synthesis and
Thermoelectric Properties of Compositional-Modulated
Telluride Nanowire Heterostructures", Nano Letters
13, 2058−2063,
2013. [PDF]
[40] Y.G. Wang, B. Qiu, A.
McGaughey, X.L. Ruan and X.F. Xu, "Mode-Wise Phonon
Properties of Bismuth Telluride", J. Heat Trans.
135, 091102, 2013. [PDF]
[39] A. Vallabhaneni, X.L.
Ruan, J.F. Rhoads, and J.Y. Murthy, "Defect-induced
mechanical mode splitting in carbon nanotube resonators",
J. Vibration and Acoustics 135, 024504, 2013.
[PDF]
[38] C. Muratore, V. Varshney
, J.J. Gengler , J.J. Hu , J.E. Bultman, T.M. Smith, P.J.
Shamberger, B. Qiu , X.L. Ruan , A.K. Roy, and A.A. Voevodin,
"Cross-plane thermal properties of transition metal
dichalcogenides", Appl. Phys. Lett. 102,
081604, 2013. [PDF]
[37] A. Vallabhaneni, B. Qiu,
J.N. Hu , Y.P. Chen, A.K. Roy, X.L. Ruan, "Interfacial
Thermal Conductance Limit and Thermal Rectification across
Vertical Carbon Nanotube/Graphene Nanoribbon -Silicon
Interfaces", J. Appl.
Phys. 113, 064311, 2013. [PDF]
[36] B. Spann, L.L. Chen, X.L.
Ruan, and X.F. Xu, "Energy relaxation in CdSe nanocrystals:
the effects of
morphology and film preparation", Optics
Express 21, A15-A22, 2013. [PDF]
2012:
[35] H. Bao, W.X. Zhang, L.L.
Chen, H.X. Huang, C. Yang, and X.L. Ruan, "Investigation
of the Optical Properties of Disordered Silicon Nanowire
Mats",
J. Appl.
Phys. 112,
124301, 2012.
[PDF]
[34] A. Vallabhaneni, X.L.
Ruan, J.F. Rhoads, and J.Y. Murthy, "A Band-Pass Filter
Approach within Molecular Dynamics for the Prediction of
Intrinsic Quality Factors of Nano-Resonators", J. Appl.
Phys., 112, 074301, 2012. [PDF]
[33] J.N. Hu, X.L. Ruan, and
Y.P. Chen, "Molecular Dynamics Study of Thermal Rectification
in Graphene Nanoribbons", Int. J. Thermophys.
33, 986-991, 2012. [PDF]
[32] Y. Wang, B. Qiu, and X.L.
Ruan, "Edge effect on thermal transport in graphene
nanoribbons: A phonon localization mechanism beyond edge
roughness scattering", Appl. Phys. Lett.
101, 013101, 2012. [PDF]
[31]
B. Qiu, Y. Wang, Q. Zhao, and X.L. Ruan, "The effects
of diameter and chirality on the thermal transport in
free-standing and supported carbon-nanotubes", Appl.
Phys. Lett.
100, 233105, 2012. [PDF].
[30] K. G.
S. H. Gunawardana, K. Mullen, J.N. Hu, Y. Chen, and X.L. Ruan, "Tunable thermal transport and thermal
rectification in strained graphene nanoribbons", Phys.
Rev. B
85, 245417, 2012. [PDF]
[29] Y. Wang, X.L. Ruan, and
A.K. Roy,
"Two-temperature nonequilibrium molecular dynamics
simulation of thermal transport across metal-nonmetal
interfaces",
Phys. Rev. B 85, 205311, 2012. [PDF]
[28] L.L. Chen, Q. Zhao,
and X.L. Ruan, "Facile synthesis of ultra-small Bi2Te3 nanoparticles,
nanorods, and nanoplates and their morphology dependent
Raman spectroscopy", Mat. Lett.
82, 112-115, 2012. [PDF].
[27] H. Bao, B. Qiu, Y.
Zhang, and X.L. Ruan, "A first-principles molecular dynamics
approach for predicting optical phonon lifetimes and
far-infrared reflectance of polar materials", Journal of
Quantitative Spectroscopy and Radiative Transfer, 2012. [PDF].
[26] B. Qiu
and X.L. Ruan, "Reduction of Spectral Phonon Relaxation
Times from Suspended to Supported Graphene", Appl. Phys.
Lett. 100, 193101, 2012. [PDF].
[25] Y. Wang, S.Y. Chen,
and X.L. Ruan, "Tunable Thermal Rectification in Graphene
Nanoribbons through Defect Engineering: A Molecular Dynamics
Study", Appl. Phys.
Lett. 100, 163101, 2012. [PDF]
[24]
B. Qiu, H. Bao, G.Q.
Zhang, Y. Wu and X.L. Ruan, "Molecular Dynamics Simulations
of Lattice Thermal Conductivity and Spectral Phonon Mean
Free Path of PbTe: Bulk and Nanostructures", Comput.
Mater. Sci. 53, 278-285, 2012. [PDF]
2011:
[23] J.N.
Hu, Y. Wang, A. Vallabhaneni, X.L. Ruan, and Y.P. Chen,
"Nonlinear thermal transport and negative differential
thermal conductance in graphene nanoribbons," Appl. Phys.
Lett. 99, 113101, 2011. [PDF]
[22] G.G.
Yadav, G.Q. Zhang, B. Qiu, J.A. Susoreny, X.L. Ruan, and Y.
Wu, "Self-Templated Synthesis and Thermal Conductivity
Investigation for Ultrathin Perovskite Oxide Nanowires,"
Nanoscale 3, 4078, 2011. [PDF]
[21] A. Vallabhaneni, J.F.
Rhoads, J.Y. Murthy, and X.L. Ruan, "Observation of
Nonclassical Scaling Laws in the Quality Factors of
Cantilevered Carbon Nanotube Resonators," J. Appl. Phys.
110, 034312, 2011. [PDF]
[20] L.L. Chen, H. Bao, T.Z.
Tan, O.L. Prezhdo, and X.L. Ruan, "Shape and Temperature
Dependence of Hot Carrier Relaxation Dynamics in Spherical
and Elongated CdSe Quantum Dots," J. Phys. Chem.
C 115, 11400-11406, 2011. [PDF]
[19] B. Qiu, L. Sun, and X.L.
Ruan, "Lattice thermal conductivity reduction in Bi2Te3
quantum wires with smooth and rough surfaces: A molecular
dynamics study,"
Phys.
Rev. B 83, 035312, 2011. [PDF]
2010:
[18] B. Qiu and X.L.
Ruan, "Thermal conductivity prediction and analysis of
few-quintuple Bi2Te3 thin films: a molecular dynamics study,"
Appl. Phys. Lett. 97, 183107, 2010. [PDF]
[17] J.N. Hu, S. Schiffli, A. Vallabhaneni, X.L. Ruan, and Y.P. Chen,
"Tuning the thermal conductivity of graphene nanoribbons by
edge passivation and isotope engineering: A molecular
dynamics study", Appl. Phys. Lett. 97,
133107, 2010. [PDF]
[16] H. Bao and X.L. Ruan,
"Enhanced optical absorption in disordered vertical silicon
nanowire arrays for photovoltaic applications," Opt.
Lett. 35, 3378-3380, 2010. [PDF]
[15] W.Z. Wu, H.A. Ye,
and X.L.
Ruan, "Luminescence dynamics of Te doped CdS quantum
dots at different doping levels," Nanotechnology
21, 265704, 2010. [PDF]
[14] H. Bao, X.L. Ruan,
and T.S. Fisher, "Optical properties of ordered vertical arrays of multiwall
carbon nanotubes", Optics Express 18, 6347-6359, 2010.
[PDF]
[13] H. Bao and X.L. Ruan,
"Ab initio calculations of thermal radiative properties:
the semiconductor GaAs," Int. J. Heat and Mass
Transfer 53, 1308-1312, 2010. [PDF]
2009:
[12] B. Qiu and X.L. Ruan,
"Molecular dynamics simulations of the thermal conductivity
of Bi2Te3 using two-body interatomic potnetials,"
Phys.
Rev. B 80, 165203, 2009. [PDF]
[11] J.N. Hu, X.L. Ruan and
Y.P. Chen, "Thermal Conductivity and Thermal
Rectification in Graphene Nanoribbons: a Molecular Dynamics
Study", Nano Lett. 9, 2730-2735, 2009. [PDF]
[10] H. Bao, B.F. Habenicht,
O.V. Prezhdo, and X.L. Ruan, "Temperature dependence of
hot carrier relaxation in a PbSe nanocrystal: an ab initio
study," Phys. Rev. B 79, 235306-1-7, 2009. [PDF]
2008:
[9] H. Bao, X.L. Ruan, and M. Kaviany,
Theory of the broadening of vibrational spectra induced by
lowered symmetry in yttria nanostructures, Phys. Rev. B
78, 125417-1-7, 2008. [PDF]
[8] X.L. Ruan and M. Kaviany, Ab
Initio Calculations of the Photon-Electron-Phonon Interactions
in Laser Cooling of Ion-Doped Solids, Journal of Computational
and Theoretical Nanoscience 5, 221-229, 2008. [PDF]
2007:
[7] X.L.
Ruan, S.C. Rand, and M. Kaviany, Entropy and Efficiency of Laser Cooling of
Solids, Phys. Rev. B 75, 214304-1-9, 2007. [PDF]
[6] X.L. Ruan and M. Kaviany, Advances in Laser Cooling
of Solids, J. Heat Transfer -Transactions of the ASME 129, 3-10, 2007. [PDF]
2006:
[5] X.L. Ruan and M. Kaviany, Enhanced Laser Cooling
of Rare-earth-ion-doped Nanocrystalline Powders, Phys. Rev. B 73,
155422-1-15, 2006. [PDF]
2005:
[4] X.L. Ruan and M. Kaviany, Enhanced
Nonradiative Relaxation and Photoluminescence Quenching in Random, Doped
Nanocrystalline Powders, J. Appl. Phys. 97,
104331-1-8, 2005. [PDF]
[3] X.L. Ruan and M. Kaviany, Photon
Localization and Electromagnetic Field Enhancement in Laser-Irradiated, Random
Porous Media, Microscale Thermophysical Engineering 9, 63-84, 2005. [PDF]
2004:
[2] S. Redmond, S.C. Rand, X.L. Ruan, and M.
Kaviany, Multiple Scattering and Nonlinear thermal Emission of Yb3+,Er3+:Y2O3
Nanopowders, J. Appl. Phys. 95, 4069-4077, 2004. [PDF]
2002:
[1] Y.Q. Gu, X.L. Ruan and L. Han, Imaging of
Thermal Conductivity with Sub-micrometer Lateral Resolution Using Scanning
Thermal Microscopy, Int. J. Thermophysics 23,
1115-1124, 2002. [PDF]
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