Xiulin Ruan

Xiulin Ruan

Professor of Mechanical Engineering

School of Mechanical Engineering
Purdue University
585 Purdue Mall
West Lafayette, IN 47907-2088

Office: FLEX 1081C

Phone: 765-494-5721
Other: +1 765 494 5721
FAX: 765-494-0539


  • B.S. Tsinghua University, '00
  • M.S. Tsinghua University, '02
  • M.S. University of Michigan - Ann Arbor, '06
  • Ph.D. University of Michigan - Ann Arbor, '07

Research Interests

  • Simulations of nanoscale thermal transport
  • Machine learning, optimization, and high throughput design
  • Thermal management in electronics, space, and battery applications
  • Transport phenomena in additive manufacturing
  • Nanomaterials and devices for sustainable energy

Awards and Recognitions

  • Editors’ Suggestion in Physical Review B, vol. 101, 161202(R), 2020.
  • Editor’s Pick in Journal of Applied Physics, vol. 123, 074302, 2018.
  • University Faculty Scholar of Purdue University, 2017
  • Outstanding Engineering Graduate Student Mentor Award, School of Mechanical Engineering, Purdue University, 2016
  • College of Engineering Faculty Early Career Research Award, Purdue University, 2016
  • Seed for Success Award, Purdue University, 2012, 2016
  • ASME Heat Transfer Division Best Paper Award, 2015
  • Purdue University Bravo Award, 2014
  • National Science Foundation Faculty Early Career Development (NSF CAREER) Award, 2012
  • Air Force Summer Faculty Fellow, 2010, 2011, 2013
  • Best Student Presentation Award (awarded to student Kelly Rickey), the 2012 SPIE Optics and Photonics Conference, San Diego, CA.
  • Best Student Presentation Award, the 2008 Energy Nanotechnology International Conference (awarded to student Bo Qiu), Jacksonville, FL

Selected Publications

X.Y. Li, J. Peoples, Z.F. Huang, Z.X. Zhao, J. Qiu, and X.L. Ruan, "Full Daytime Sub-Ambient Radiative Cooling in Commercial-like Paints with High Figure of Merit”, Cell Reports Physical Science, in press (2020).

Y.X. Luo, X.L Yang, T.L. Feng, J.Y. Wang, and X.L. Ruan, "Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals", Nature Communications 11, 2554 (2020). https://doi.org/10.1038/s41467-020-16371-w

P.R. Chowdhury, C. Reynolds, A. Garrett, T.L. Feng, S.P. Adiga, and X.L. Ruan, "Machine learning-maximized Anderson localization of phonons in random multilayers", Nano Energy 69, 104428 (2020). https://doi.org/10.1016/j.nanoen.2019.104428

X.Y. Yang, T.L. Feng, J.S. Kang, Y.J. Hu, J. Li, and X.L. Ruan, "Observation of strong higher-order lattice anharmonicity in Raman and infrared response", Phys. Rev. B 101, 161202(R) (2020). https://doi.org/10.1103/PhysRevB.101.161202

Q.Y. Li, T.L. Feng, W. Okita, Y. Komori, H. Suzuki, T. Kato, T. Kaneko, T. Ikuta, X.L. Ruan, and K. Takahashi, "Enhanced Thermoelectric Performance of As-Grown Suspended Graphene Nanoribbons", ACS Nano 13, 9182-9189 (2019). https://doi.org/10.1021/acsnano.9b03521

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). https://doi.org/10.1016/j.ijheatmasstransfer.2018.11.059

T.L. Feng, L. Lindsay, and X.L. Ruan, “Four phonon scattering significantly reduces thermal conductivity is solids,” Phys. Rev. B 96, 161201(R) (2017). https://doi.org/10.1103/PhysRevB.96.161201

S. Sullivan, A. Vallabhaneni, I. Kholmanov, X.L. Ruan, J.Y. Murthy, and L. Shi, "Optical generation and detection of local nonequilibrium phonons in suspended graphene", Nano Lett. 17, 2049−2056 (2017). https://doi.org/10.1021/acs.nanolett.7b00110

Z.F. Huang and X.L. Ruan, “Nanoparticle embedded double-layer coating for daytime radiative cooling”, Int. J. Heat Mass Transfer 104, 890-896 (2017). https://doi.org/10.1016/j.ijheatmasstransfer.2016.08.009

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). https://doi.org/10.1021/nl403773f