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† Authors of equal contribution

[46] Q Gu†, J. P. Carroll†, S. Wang†, S. Ran, C. Broyles, H. Siddiquee, N. P. Butch, S. R. Saha, J. Paglione, J. C. Séamus Davis, and X. Liu, Detection of a pair density wave state in UTe2. Nature 618, 921–927 (2023).

[45] S.M. O’Mahony†, W. Ren†, W. Chen, Y. X. Chong, X. Liu, H. Eisaki, S. Uchida, M.H. Hamidian, and J.C. Séamus Davis, On the electron pairing mechanism of copper-oxide high temperature superconductivity. Proceedings of the National Academy of Sciences 119, e2207449119 (2022).

[44] X. Liu†, Q. Li†, Q. Ruan†, M. S. Rahn, B. I. Yakobson, and M. C. Hersam, Borophene synthesis beyond the single-atomic-layer limit. Nature Materials 21, 35–40 (2022).

[43] X Liu†, M. S Rahn†, Q. Ruan, B.I. Yakobson, and M.C. Hersam, Probing borophene oxidation at the atomic scale. Nanotechnology 33, 235702 (2022).

[42] X. Liu†, Y. X. Chong†, R. Sharma, and J.C. Séamus Davis, Atomic-scale visualization of electronic fluid flow. Nature Materials 20, 1480–1484 (2021).

[41] X. Liu†, Y. X. Chong†, R. Sharma, and J.C. Séamus Davis, Discovery of a Cooper-pair density wave state in a transition-metal dichalcogenide. Science 372, 1447-1452 (2021).

[40] L. Li, J. F. Schultz, S. Mahapatra, X. Liu, C. Shaw, X. Zhang, M. C. Hersam, and N. Jiang, Angstrom-scale spectroscopic visualization of interfacial interactions in an organic/borophene vertical heterostructure. Journal of the American Chemical Society 143, 15624-15634 (2021). (Front Cover Article)

[39] X. Liu, L. Wang, B. I. Yakobson, and M. C. Hersam, Nanoscale probing of image-potential states and electron transfer doping in borophene polymorphs. Nano Letters 21, 1169–1174 (2021). (ACS Editors’ Choice)

[38] Q. Li†, X. Liu†, E. Aklile, S. Li, and M. C. Hersam, Self-assembled borophene/graphene nanoribbon mixed-dimensional heterostructures. Nano Letters 21, 4029–4035 (2021).

[37] V. K. Sangwan, S. V. Rangnekar, J. Kang, J. Shen, H.-S. Lee, D. Lam, J. Shen, X. Liu, A. C. M. de Moraes, L. Kuo, J. Gu, H. Wang, and M. C. Hersam, Visualizing thermally activated memristive switching in percolating networks of solution-processed two-dimensional semiconductors, Advanced Functional Materials 31, 2107385 (2021).

[36] Y. X. Chong†, X. Liu†, R. Sharma, A. Kostin, G. Gu, K. Fujita, J.C. Séamus Davis, and P. O. Sprau, Severe Dirac mass gap suppression in Sb2Te3-based quantum anomalous Hall materials. Nano Letters 20, 8001-8007 (2020). (Front Cover Article)

[35] S. Li, C. Zhong, A. Henning, V. Sangwan, Q. Zhou, X. Liu, M. Rahn, S. Wells, H. Y. Park, J. Luxa, Z. Sofer, A. Facchetti, P. Darancet, T. Marks, L. Lauhon, E. Weiss, M. C. Hersam, Molecular-scale characterization of photoinduced charge separation in mixed-dimensional InSe-organic van der Waals heterostructures. ACS Nan14, 3509-3518 (2020).

[34]­ L. Liu, Z. Zhang, X. Liu, X. Xuan, B. I. Yakobson, M. C. Hersam, and W. Guo, Borophene concentric superlattices via self-assembly of twin boundaries. Nano Letters 20, 1315- 1321 (2020).

[33­] X. Liu, M. C. Hersam, 2D materials for quantum information science. Nature Reviews Materials 4, 669–684 (2019). (Front Cover Article)

[32] X. Liu, L. Wang, S. Li, M. S. Rahn, B. I. Yakobson, and M. C. Hersam, Geometric imaging of borophene polymorphs with functionalized probes. Nature Communications 10, 1642 (2019).

[31] X. Liu, M. C. Hersam, Borophene-graphene heterostructures. Science Advances 5, eaax6444 (2019).

[30] Z. Zhang, A. J. Mannix, X. Liu, Z. Hu, N. P. Guisinger, M. C. Hersam, and B. I. Yakobson, Near- equilibrium growth from borophene edges on silver. Science Advances 5, eaax0246 (2019).

[29] B. Kiraly†, X. Liu†, Z. Zhang, A. J. Mannix, B. L. Fisher, B. I. Yakobson, and M. C. Hersam, and N. P. Guisinger, Borophene Synthesis on Au(111). ACS Nano 13, 3816-3822 (2019).

[28] X. Liu, I. Balla, V. K. Sangwan, H. Usta, A. Facchetti, T. J. Marks, and M. C. Hersam, Ultrahigh vacuum self-assembly of rotationally commensurate C8-BTBT/MoS2/graphene mixed-dimensional heterostructures. Chemistry of Materials 31, 1761-1766 (2019).

[27] X. Liu, Z. Zhang, L. Wang, B. I. Yakobson, and M. C. Hersam, Intermixing and periodic self-assembly of borophene line defects. Nature Materials 17, 783–788 (2018).

[26] X. Liu, and M. C. Hersam, Interface characterization and control of 2D materials and heterostructures. Advanced Materials 30, 1801586 (2018).

[25] J. Kang, I. Balla, X. Liu, H. Bergeron, S. Kim, C. Wolverton, and M. C. Hersam, Selective transfer of rotationally commensurate MoS2 from an epitaxially grown van der Waals heterostructure. Chemistry of Materials 30, 8495-8500 (2018).

[24] J. Kang, V. K. Sangwan, H.-Sub. Lee, X. Liu, and M. C. Hersam, Solution-processed layered gallium telluride thin-film photodetectors. ACS Photonics 5, 3996 (2018).

[23] J. Kang, S. A. Wells, V. K. Sangwan, D. Lam, X. Liu, Z. Sofer, J. Luxa, and M. C. Hersam, Solution‐based processing of optoelectronically active indium selenide. Advanced Materials 30, 1802990 (2018).

[22] Q. Li, Y. Xu, Z. Yao, J. Kang, X. Liu, C. Wolverton, M. C. Hersam, J. Wu, and V. P. Dravid, Revealing the effects of electrode crystallographic orientation on battery electrochemistry via the anisotropic lithiation and sodiation of ReS2. ACS Nano 12, 7875-7882 (2018).

[21] C. Sun, M. Shen, A, D, Chavez, A. M. Evans, X. Liu, B. Harutyunyan, N. C. Flanders, M. C. Hersam, M. J. Bedzyk, M. O. de la Cruz, and W. R. Dichtel, High aspect ratio nanotubes assembled from macrocyclic iminium salts. Proceedings of the National Academy of Sciences 115, 8883-8888 (2018).

[20] D. Lam, K.-S. Chen, J. Kang, X. Liu, and M. C. Hersam, Anhydrous liquid-phase exfoliation of pristine electrochemically-active GeS nanosheets. Chemistry of Materials 30, 2245-2250 (2018).

[19] Y.-L. Wu, N. S. Bobbitt, J. Logsdon, N. Powers-Riggs, J. Nelson, X. Liu, T. Wang, R. Snurr, J. Hupp, O. Farha, M. C. Hersam, and M. R. Wasielewski, Tunable crystallinity and charge transfer in 2-dimensional G-quadruplex organic frameworks. Angewandte Chemie International Edition 57, 3985-3989 (2018).

[18] J. Wu, Q. Li, Y. Li, J. Kang, X. Liu, C. Wolverton, M. C. Hersam, and V. P. Dravid, Anisotropic lithiation and sodiation of ReS2 studied by in-situ TEM. Microscopy and Microanalysis 24, 1570-1571 (2018).

[17] X. Liu, Z. Wei, I. Balla, A. J. Mannix, N. P. Guisinger, E. Luijten, and M. C. Hersam, Self-assembly of electronically abrupt borophene/organic lateral heterostructures. Science Advances 3, e1602356 (2017).

[16] X. Liu, K.-S. Chen, S. A. Wells, I. Balla, J. Zhu, J. D. Wood, and M. C. Hersam, Scanning probe nanopatterning and layer-by-layer thinning of black phosphorus. Advanced Materials 29, 1604121 (2017).

[15] X. Liu†, C. R. Ryder†, S. A. Wells, and M. C. Hersam, Resolving the in-plane anisotropic properties of black phosphorus. Small Methods 1, 1700143 (2017).

[14] H. Bergeron, V. K. Sangwan, J. J. McMorrow, G. P. Campbell, I. Balla, X. Liu, M. J. Bedzyk, T. J. Marks, and M. C. Hersam, Chemical vapor deposition of monolayer MoS2 directly on ultrathin Al2O3 for low-power electronics. Applied Physics Letters 110, 053101 (2017).

[13] X. Liu†, I. Balla†, H. Bergeron, G. P. Campbell, M. J. Bedzyk, and M. C. Hersam, Rotationally commensurate growth of MoS2 on epitaxial graphene. ACS Nano 10, 1067-1075 (2016).

[12] X. Liu, I. Balla, H. Bergeron, and M. C. Hersam, Point defects and grain boundaries in rotationally commensurate MoS2 on epitaxial graphene. Journal of Physical Chemistry C 120, 20798-20805 (2016).

[11] P.-C. Chen, X. Liu, J. L. Hedrick, Z. Xie, S. Wang, Q.-Y. Lin, M. C. Hersam, V. P. Dravid, and C. A. Mirkin, Polyelemental nanoparticle libraries. Science 352, 1565-1569 (2016).

[10] J. Zhu, X. Liu, M. L. Geier, J. J. McMorrow, D. Jariwala, M. E. Beck, W. Huang, T. J. Marks, and M. C. Hersam, Layer-by-layer assembled 2D montmorillonite dielectrics for solution-processed electronics. Advanced Materials 28, 63-68 (2016). (Back Cover Article)

[9] J. Kang, V. Sangwan, J. D. Wood, X. Liu, I. Balla, D. Lam, and M. C. Hersam, Layer-by-layer sorting of rhenium disulfide via high-density isopycnic density gradient ultracentrifugation. Nano Letters 16, 7216-7223 (2016).

[8] L. Li, E. B. Secor, K.-S. Chen, J. Zhu, X. Liu, T. Z. Gao, J.-W. T. Seo, Y. Zhao, and M. C. Hersam, High-performance solid-state supercapacitors and microsupercapacitors derived from printable graphene inks. Advanced Energy Materials 6, 1600909 (2016).

[7] J. Kang, S. A. Wells, J. D. Wood, J.-H. Lee, X. Liu, C. R. Ryder, J. Zhu, J. R. Guest, C. A. Husko, and M. C. Hersam, Stable aqueous dispersions of optically and electronically active phosphorene. Proceedings of the National Academy of Sciences 113, 11688-11693 (2016).

[6] X. Liu†, J. D. Wood†, K.-S. Chen, E. Cho, and M. C. Hersam, In situ thermal decomposition of exfoliated two-dimensional black phosphorus. Journal of Physical Chemistry Letters 6, 773-778 (2015).

[5] A. J. Mannix, X.-F. Zhou, B. Kiraly, J. D. Wood, D. Alducin, B. D Myers, X. Liu, B. L. Fisher, U. Santiago, J. R. Guest, M. J. Yacaman, A. Ponce, A. R. Oganov, M. C. Hersam, and N. P. Guisinger, Synthesis of borophenes: Anisotropic, two-dimensional boron polymorphs. Science 350, 1513-1516 (2015).

[4] J. Kang, J. D. Wood, S. A. Wells, J.-H. Lee, X. Liu, K.-S. Chen, and M. C. Hersam, Solvent exfoliation of electronic-grade, two-dimensional black phosphorus. ACS Nano 9, 3596-3604 (2015).

[3] J. D. Wood†, S. A. Wells†, D. Jariwala, K.-S. Chen, E. Cho, V. K. Sangwan, X. Liu, L. J. Lauhon, T. J. Marks, and M. C. Hersam, Effective passivation of exfoliated black phosphorus transistors against ambient degradation. Nano Letters 14, 6964-6970 (2014).

[2] X. Liu, and Q. Lu, A piezo motor based on a new principle with high output force, rigidity and integrity: The Tuna Drive. Review of Scientific Instruments 83, 115111 (2012).

[1] X. Liu, Z. Wei, C. Feng, Y. Duan, Z. Wang, and Z. Zhang, Preparation and characterization of magnetic fluid. Physics Experimentation 32, 8 (2012).


[3] M. C. Hersam, and X. Liu, Electronically Abrupt Borophene/Organic Lateral Heterostructures and Preparation Thereof, US Patent US10550003 B2.

[2] Q. Lu, and X. Liu, Double-End Clamping Piezoelectric Motor Utilizing Opposite-direction Rubs to Reduce Friction Force and Control Method, Chinese Invention Patent CN103684037 B.

[1] Z. Wang, J. Du, X. Liu, Z. Wei, and X. Rong, Dual-Mode Polarization Cavity with Adjustable Coupling Hole, Chinese Invention Patent CN103326098 B.