Skip to main content

Jie Xu

Assistant Scientist

Applying polymer physics knowledge to realize new properties of functional materials


Professional Experience 

  • Postdoctoral Fellow, Stanford University 
  • Ph.D. Nanjing University

Research Interests

  • Autonomous material processing
  • Wearable microelectronics
  • Multiscale characterization using optical spectroscopy and synchrotron X-ray
  • Nanomaterials and nanomanufacturing



  • Xu, J.*Wu, H.-C.*;(* contribute equally) Zhu, C.; Ehrlich, A.; Shaw, L.; Nikolka, M.; Wang, S.; Molina-Lopez, F.; Gu, X.; Luo, S.; Zhou, D.; Kim, Y.-H.; Wang, G.-J. N.; Gu, K.; Feig, V. R.; Chen, S.; Kim, Y.; Katsumata, T.; Zheng, Y.-Q.; Yan, H.; Chung, J. W.; Lopez, J.; Murmann, B.; Bao, Z., Multi-scale ordering in highly stretchable polymer semiconducting films. Nature Materials 2019.
    • **Featured by MRS Bulletin: Simple manufacturing process boosts stretchable semiconductor performance”.
  • Mun, J.; Kang, J.; Zheng Yu.; Luo S.; Wu, H. -C.; Matsuhisa N.; Xu, J.; Wang, G.-J. N.; Yun Y.; Xue, G.; Tok, J. B. H.; Bao, Z., Conjugated Carbon Cyclic Nanoring as Additives for Intrinsically Stretchable Semiconducting Polymers, Advanced Materials 2019
  • Qian, Z.; Cao, Z.; Galuska, L.; Zhang, S.; Xu, J.; Gu, X., Glass Transition Phenomenon for Conjugated Polymers. Macromolecular Chemistry and Physics 2019, 220 (11), 1900062.
  • Gasperini, A.; Wang, G.-J. N.; Molina-Lopez, F.; Wu, H.-C.; Lopez, J.; Xu, J.; Luo, S.; Zhou, D.; Xue, G.; Tok, J. B. H.; Bao, Z., Characterization of Hydrogen Bonding Formation and Breaking in Semiconducting Polymers under Mechanical Strain. Macromolecules 2019, 52 (6), 2476-2486.
  • Qian, Z.; Galuska, L., McNutt, W. W.; Ocheje, M,; He, Y.; Cao, Z.; Zhang, S.; Xu, J.; Hong, K.; Rondeau-Gagne, S.; Mei, J.; Gu, X., Challenge and solution of characterizing glass transition temperature for conjugated polymers by differential scanning calorimetry” Journal of Polymer Science, Part B: Polymer Physics, 2019, In press.


  • Wang, S.*Xu J.*(* contribute equally); Wang, W. C.; Wang, G. J. N.; Rastak, R.; Molina-Lopez, F.; Chung, J. W.; Niu, S. M.; Feig, V. R.; Lopez, J.; Lei, T.; Kwon, S. K.; Kim, Y.; Foudeh, A. M.; Ehrlich, A.; Gasperini, A.; Yun, Y.; Murmann, B.; Tok, J. B. H.; Bao, Z., Skin electronics from scalable fabrication of an intrinsically stretchable transistor array. Nature 2018, 555, 83
  • Wang, G.-J. N.; Molina-Lopez, F.; Zhang, H.; Xu, J.; Wu, H.-C.; Lopez, J.; Shaw, L.; Mun, J.; Zhang, Q.; Wang, S.; Ehrlich, A.; Bao, Z., Nonhalogenated Solvent Processable and Printable High-Performance Polymer Semiconductor Enabled by Isomeric Nonconjugated Flexible Linkers. Macromolecules 2018,51 (13), 4976-4985.
  • Lopez, F. M.; Wu, H. -C.; Wang, G.-J. N.; Yan, H.; Shaw L.; Xu, J.; Toney, M. F. and Bao, Z., Enhancing Molecular Alignment and Charge Transport of Solution-Sheared Semiconducting Polymer Films by the Electrical-Blade Effect. Advanced Electronic Materials, 1800110.
  • Wang, S.*; Oh, J. Y.*; Xu J.*(* contribute equally)Tran, H.; Bao, Z., Skin-Electronics: An Emerging Paradigm, Accounts of Chemical Research 2018, 51, 1033-1045


  • Xu, J.*; Wang, S.* (* contribute equally); Wang, G. J. N.; Zhu, C. X.; Luo, S. C.; Jin, L. H.; Gu, X. D.; Chen, S. C.; Feig, V. R.; To, J. W. F.; Rondeau-Gagne, S.; Park, J.; Schroeder, B. C.; Lu, C.; Oh, J. Y.; Wang, Y. M.; Kim, Y. H.; Yan, H.; Sinclair, R.; Zhou, D. S.; Xue, G.; Murmann, B.; Linder, C.; Cai, W.; Tok, J. B. H.; Chung, J. W.; Bao, Z., Highly stretchable polymer semiconductor films through the nanoconfinement effect. Science 2017, 355(6320): 59-64.
    • **Featured by Science: Staying conductive in the stretch” 355 (2017) 24-25.
    • **Featured by Nature Nanotechnology: Wearable electronics: Stretching the limits” 12 (2017) 101.
    • **Featured by Clinical Chemistry Electronics that flex themselves” 63 (2017) 1308-1310.
    • **Featured by Physics Today Polymer-based transistors bring fully stretchable devices within reach”    70, (2017) 14-16
    • **Highlighted in Physics World: Stretchable transistor could be a second skin”;
    • **Highlighted in C&EN: Super stretchy semiconducting polymers”;
    • **Highlighted on Phys. org: A transistor that can be stretched to twice its length with minimal loss of conductivity”;
    • **Highlighted on ScienceDaily: A flexible transistor that conforms to skin”;
    • **Highlighted in ECN, News Atlas, New Scientist, Steemit, CCT News, EurekAlert, Printed Electronics World, etc
  • Lu, C.; Lee, W. Y.; Gu, X. D.; Xu, J.; Chou, H. H.; Yan, H. P.; Chiu, Y. C.; He, M. Q.; Matthews, J. R.; Niu, W. J.; Tok, J. B. H.; Toney, M. F.; Chen, W. C.; Bao, Z., Effects of Molecular Structure and Packing Order on the Stretchability of Semicrystalline Conjugated Poly(Tetrathienoacene-diketopyrrolopyrrole) Polymers. Advanced Electronic Materials 2017, 3 (2).


  • Oh, J. Y.; Rondeau-Gagne, S.; Chiu, Y. C.; Chortos, A.; Lissel, F.; Wang, G. J. N.; Schroeder, B. C.; Kurosawa, T.; Lopez, J.; Katsumata, T.; Xu J., Zhu, C. X.; Gu, X. D.; Bae, W. G.; Kim, Y.; Jin, L. H.; Chung, J. W.; Tok, J. B. H.; Bao, Z. N. Intrinsically stretchable and healable semiconducting polymer for organic transistors. Nature 2016, 539 (7629), 411-415.
  • Li X.*Xu J.*(* contribute equally); Wang, D.; Sha, Y.; Chen, W.; Zhou, D. S.; Wang, X. L.; Sun, Q.; Xue, G.; Li, L. L., Low-temperature processing of polymer nanoparticles for bioactive composites. Journal of Polymer Science Part B: Polymer Physics 2016, 54(24): 2514-2520.
  • Wang, G. J. N.; Shaw, L.; Xu, J.; Kurosawa, T.; Schroeder, B. C.; Oh, J. Y.; Benight, S. J.; Bao, Z., Inducing Elasticity through Oligo-Siloxane Crosslinks for Intrinsically Stretchable Semiconducting Polymers. Advanced Functional Materials 2016, 26 (40), 7254-7262.
  • Schroeder, B. C.; Chiu, Y. C.; Gu, X. D.; Zhou, Y.; Xu, J.; Lopez, J.; Lu, C.; Toney, M. F.; Bao, Z., Non-Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance. Advanced Electronic Materials 2016, 2 (7).
  • Rao, Y. L.; Chortos, A.; Pfattner, R.; Lissel, F.; Chiu, Y. C.; Feig, V.; Xu, J.; Kurosawa, T.; Gu, X. D.; Wang, C.; He, M. Q.; Chung, J. W.; Bao, Z. N. Stretchable Self-Healing Polymeric Dielectrics Cross-Linked Through Metal-Ligand Coordination. Journal of the American Chemical Society 2016, 138 (18), 6020-6027.
  • Park, S.; Lee, M. H.; Ahn, K. S.; Choi, H. H.; Shin, J.; Xu, J.; Mei, J. G.; Cho, K.; Bao, Z. A.; Lee, D. R.; Kang, M. S.; Kim, D. H. Combinatorial Study of Temperature-Dependent Nanostructure and Electrical Conduction of Polymer Semiconductors: Even Bimodal Orientation Can Enhance 3D Charge Transport. Advanced Functional Materials 2016, 26 (26), 4627-4634.

2015 ~ 2011

  • Giri, G.; DeLongchamp, D. M.; Reinspach, J.; Fischer, D. A.; Richter, L. J.; Xu, J.; Benight, S.; Ayzner, A.; He, M. Q.; Fang, L.; Xue, G.; Toney, M. F.; Bao, Z. N. Effect of Solution Shearing Method on Packing and Disorder of Organic Semiconductor Polymers. Chemistry of Materials 2015, 27 (7), 2350-2359.
  • Xu J.;Ding L.; Chen J; Gao S; Li L.L.; Zhou D.; Li X.; Xue G., Sensitive characterization of the influence of substrate interfaces on supported thin films. Macromolecules 2014, 47(18): 6365-6372.
  • Xu J.*;Diao Y.* (* contribute equally); Zhou, D. S.; Mao, Y. S.; Giri, G.; Chen, W.; Liu, N.; Mannsfeld, S. C. B.; Xue, G.; Bao, Z., Probing the interfacial molecular packing in TIPS-pentacene organic semiconductors by surface enhanced Raman scattering. Journal of Materials Chemistry C 2014, 2(16): 2985-2991.
  • Diao, Y.; Lenn, K. M.; Lee, W. Y.; Blood-Forsythe, M. A.; Xu, J.; Mao, Y. S.; Kim, Y.; Reinspach, J. A.; Park, S.; Aspuru-Guzik, A.; Xue, G.; Clancy, P.; Bao, Z., Understanding polymorphism in organic semiconductor thin films through nanoconfinement. Journal of the American Chemical Society 2014, 136 (49), 17046-17057.
  • Chen, J.; Li, L.; Zhou, D.; Xu, J.; Xue, G., Effect of molecular chain architecture on dynamics of polymer thin films measured by the ac-chip calorimeter. Macromolecules 2014, 47 (10), 3497-3501.
  • Diao, Y.; Tee, B. C. K.; Giri, G.; Xu, J.; Kim, D. H.; Becerril, H. A.; Stoltenberg, R. M.; Lee, T. H.; Xue, G.; Mannsfeld, S. C. B.; Bao, Z., Solution coating of large-area organic semiconductor thin films with aligned single-crystalline domains. Nature materials 2013, 12 (7), 665.
    • **Selected as the front cover of Nature Materials
    • **Featured in Nature Materials News and Views. doi:10.1038/nmat3686
    • Organic semiconductors: Made to order” 6/2/2013
    • **Featured in SLAC/Stanford news, ScienceDaily, R&D Magazine, EurekAlert, Materials today, the  
    •   Engineer etc. Printing Innovations Provide 10-fold Improvement in Organic Electronics”6/3/2013
    • **Featured by Materials Research Society in Materials306. Fluid-Enhanced Crystal Engineering   
    •   Improves Upon Solution Coating of Organic Semiconductors” 6/3/2013
    • **Featured in Nanotechweb. Solution coating the easy way” 6/26/2013
  • Chen, J.; Xu, J.; Wang, X.; Zhou, D.; Sun, P.; Xue, G., Thickness Dependence of Glass Transitions Measured by AC-Chip Calorimetry in Films with Controlled Interface. Macromolecules 2013, 46 (17), 7006-7011.
  • Shen, J.; Jiang, W.; Liu, Y.; Wei, R.; Liu, X.; Zhong, Y.; Xu, J.; Li, L.; Xue, G., Synthesis and thermal properties of poly (methyl methacrylate)-poly (L-lactic acid)-poly (methyl methacrylate) tri-block copolymer.Journal of Applied Polymer Science 2012, 124 (5), 3905-3911.
  • Xu J.; Li D.; Chen J.; Din L.; Wang X.; Tao F.; Xue G., Detection of interchain proximity and segmental motion of polymer glass. Macromolecules 2011, 44(18): 7445-7450.



  • Xu J.Chung J., Bao Z., Stretchable Organic Semiconductor by Blending Method.” U.S. Non-provisional Application. Atty. Dkt. No. 15639-000302-US-01, filed April 2017 
  • Xue G., Li X., Wang X., Zhou D., Xu J.,Teng C., Li L., Preparation method of bioactive molecule and macromolecule composite material”, publication number CN 105385057, published March 2016



  • Materials Research Society (MRS) Postdoctoral Award (2018)
  • 5th annual Stanford Polymer Collective (SPC) poster symposium - 1stPlace (2017)