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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
  • Printable organic electronics and stretchable, flexible electronics
  • Polymer/plastic processing
  • Multiscale characterization using optical spectroscopy and synchrotron X-ray
  • Nanomaterials and nanomanufacturing



  • Wang, W.; Wang, S.; Rastak, R.; Ochiai, Y.; Niu, S.; Jiang, Y.; Arunachala, P.K.; Zheng, Y.; Xu, J.; Matsuhisa, N.; Yan, X.; Kwon, S.; Miyakawa, M.; Zhang, Z.; Ning, R.; Foudeh, A. M.; Yun, Y.; Linder, C.; Tok, J. B.-H.; Bao, Z., Strain-insensitive intrinsically stretchable transistors and circuits, submitted 2020.

  • Dai, Y.; Hu, H.; Wang, M.; Xu, J.; Wang, S., Stretchable transistors and functional circuits for next-generation human-integrated electronics, submitted 2020

  • Luo, S.; Wang, T.; Ocheje, M.; Zhang, S.; Xu, J.; Qian Z.; Gu, X.; Xue, G.; Rondeau-Gagneì, S.; Jiang, J.; Hu, W.; Zhuravlev, E.; Zhou, D., Multiamorphous Phases in Diketopyrrolopyrrole-Based Conjugated Polymers: From Bulk to Ultrathin Films, Macromolecules 2020.

  • Wu, H.-C.; Nikzad, S.; Zhu, C.; Yan, H.; Li, Y.; Niu, W.; Matthews, J. R.; Xu, J.; Matsuhisa, N.; Arunachala, P. K.; Rastak, R.; Linder, C.; Zheng, Y.-Q.; Toney, M. F.; He, M.; Bao, Z.;Design principles for intrinsically stretchable polymer semiconductors guided by molecular ordering. In preparation 2020.


  • 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, 31 (42), 1903912
  • 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, 57 (23), 1635-1644.


  • 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.



  • YUN Youngjun, Bao Z., Xu J., Organic semiconductor thin film, and thin film transistor and electronic device including the same.”, publication number US 16669957, published April 2020
  • 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


Honors and Service

  • Mentor: Chain reaction innovator, 2020- present
  • Editorial Board: Communications Materials (Nature Research), 2020- present, Organic and flexible electronics, polymer science (areas of knowledge); Flexible Electronics (Frontiers), 2020- present.
  • Materials Research Society (MRS) Postdoctoral Award (2018)
  • 5th annual Stanford Polymer Collective (SPC) poster symposium - 1stPlace (2017)