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Ke Xu

Assistant Professor
ke.xu@pitt.edu
Chem/Petroleum Engineering

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Chao, Z., Sezginel, K.B., Xu, K., Crouch, G.M., Gray, A.E., Wilmer, C.E., Bohn, P.W., Go, D.B., & Fullerton-Shirey, S.K. (2020). Silver Nanofilament Formation Dynamics in a Polymer-Ionic Liquid Thin Film by Direct Write. ADVANCED FUNCTIONAL MATERIALS, 30(6), 1907950.Wiley. doi: 10.1002/adfm.201907950.

Kozhakhmetov, A., Nasr, J.R., Zhang, F., Xu, K., Briggs, N.C., Addou, R., Wallace, R., Fullerton-Shirey, S.K., Terrones, M., Das, S., & Robinson, J.A. (2020). Scalable BEOL compatible 2D tungsten diselenide. 2D MATERIALS, 7(1), 015029.IOP Publishing. doi: 10.1088/2053-1583/ab5ad1.

Liang, J., Xu, K., Arora, S., Laaser, J.E., & Fullerton-Shirey, S.K. (2020). Ion-Locking in Solid Polymer Electrolytes for Reconfigurable Gateless Lateral Graphene p-n Junctions. MATERIALS, 13(5), 1089.MDPI AG. doi: 10.3390/ma13051089.

Lin, Y.C., Bersch, B.M., Addou, R., Xu, K., Wang, Q., Smyth, C.M., Jariwala, B., II, W.R.C., Fullerton-Shirey, S.K., Kim, M.J., Wallace, R.M., & Robinson, J.A. (2020). Modification of the Electronic Transport in Atomically Thin WSe(2)by Oxidation. ADVANCED MATERIALS INTERFACES, 7(18), 2000422.Wiley. doi: 10.1002/admi.202000422.

Subramanian, S., Xu, K., Wang, Y., Moser, S., Simonson, N.A., Deng, D., Crespi, V.H., Fullerton-Shirey, S.K., & Robinson, J.A. (2020). Tuning transport across MoS2/graphene interfaces via as-grown lateral heterostructures. NPJ 2D MATERIALS AND APPLICATIONS, 4(1).Springer Science and Business Media LLC. doi: 10.1038/s41699-020-0144-0.

Woeppel, A., Xu, K., Kozhakhmetov, A., Awate, S., Robinson, J.A., & Fullerton-Shirey, S.K. (2020). Single- versus Dual-Ion Conductors for Electric Double Layer Gating: Finite Element Modeling and Hall-Effect Measurements. ACS APPLIED MATERIALS & INTERFACES, 12(36), 40850-40858.American Chemical Society (ACS). doi: 10.1021/acsami.0c08653.

Xu, K., & Fullerton-Shirey, S.K. (2020). Electric-double-layer-gated transistors based on two-dimensional crystals: recent approaches and advances. Journal of Physics: Materials, 3(3), 032001.IOP Publishing. doi: 10.1088/2515-7639/ab8270.

Liang, J., Xu, K., Toncini, B., Bersch, B., Jariwala, B., Lin, Y.C., Robinson, J., & Fullerton-Shirey, S.K. (2019). Impact of Post-Lithography Polymer Residue on the Electrical Characteristics of MoS2 and WSe2 Field Effect Transistors. ADVANCED MATERIALS INTERFACES, 6(3), 1801321.Wiley. doi: 10.1002/admi.201801321.

Liang, J., Xu, K., Wu, M., Hunt, B.M., Wang, W.H., Cho, K., & Fullerton-Shirey, S.K. (2019). Molecularly Thin Electrolyte for All Solid-State Nonvolatile Two-Dimensional Crystal Memory. NANO LETTERS, 19(12), 8911-8919.American Chemical Society (ACS). doi: 10.1021/acs.nanolett.9b03792.

Sun, Z., Beaumariage, J., Xu, K., Liang, J., Hou, S., Forrest, S.R., Fullerton-Shirey, S.K., & Snoke, D.W. (2019). Electric-field-induced optical hysteresis in single-layer WSe2. APPLIED PHYSICS LETTERS, 115(16), 161103.AIP Publishing. doi: 10.1063/1.5123514.

Xu, K., Liang, J., Woeppel, A., Bostian, M.E., Ding, H., Chao, Z., McKone, J.R., Beckman, E.J., & Fullerton-Shirey, S.K. (2019). Electric Double-Layer Gating of Two-Dimensional Field-Effect Transistors Using a Single-Ion Conductor. ACS APPLIED MATERIALS & INTERFACES, 11(39), 35879-35887.American Chemical Society (ACS). doi: 10.1021/acsami.9b11526.

Chao, Z., Radka, B.P., Xu, K., Crouch, G.M., Han, D., Go, D.B., Bohn, P.W., & Fullerton-Shirey, S.K. (2018). Direct-Write Formation and Dissolution of Silver Nanofilaments in Ionic Liquid-Polymer Electrolyte Composites. SMALL, 14(39), e1802023.Wiley. doi: 10.1002/smll.201802023.

Lan, Y., Farid, S., Meshik, X., Xu, K., Choi, M., Ranginwala, S., Wang, Y.Y., Burke, P., Dutta, M., & Stroscio, M.A. (2018). Detection of Immunoglobulin E with a Graphene-Based Field-Effect Transistor Aptasensor. JOURNAL OF SENSORS, 2018, 1-8.Hindawi Limited. doi: 10.1155/2018/3019259.

Lin, Y.C., Jariwala, B., Bersch, B.M., Xu, K., Nie, Y., Wang, B., Eichfeld, S.M., Zhang, X., Choudhury, T.H., Pan, Y., Addou, R., Smyth, C.M., Li, J., Zhang, K., Haque, M.A., Folsch, S., Feenstra, R.M., Wallace, R.M., Cho, K., Fullerton-Shirey, S.K., Redwing, J.M., & Robinson, J.A. (2018). Realizing Large-Scale, Electronic-Grade Two-Dimensional Semiconductors. ACS NANO, 12(2), 965-975.American Chemical Society (ACS). doi: 10.1021/acsnano.7b07059.

Xu, K., Islam, M.M., Guzman, D., Seabaugh, A.C., Strachan, A., & Fullerton-Shirey, S.K. (2018). Pulse Dynamics of Electric Double Layer Formation on All-Solid-State Graphene Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES, 10(49), 43166-43176.American Chemical Society (ACS). doi: 10.1021/acsami.8b13649.

Zhang, K., Bersch, B.M., Joshi, J., Addou, R., Cormier, C.R., Zhang, C., Xu, K., Briggs, N.C., Wang, K., Subramanian, S., Cho, K., Fullerton-Shirey, S., Wallace, R.M., Vora, P.M., & Robinson, J.A. (2018). Tuning the Electronic and Photonic Properties of Monolayer MoS2 via In Situ Rhenium Substitutional Doping. ADVANCED FUNCTIONAL MATERIALS, 28(16), 1706950.Wiley. doi: 10.1002/adfm.201706950.

Zhang, K., Bersch, B.M., Joshi, J., Addou, R., Cormier, C.R., Zhang, C., Xu, K., Briggs, N.C., Wang, K., Subramanian, S., Cho, K., Fullerton-Shirey, S., Wallace, R.M., Vora, P.M., & Robinson, J.A. (2018). 2D Materials: Tuning the Electronic and Photonic Properties of Monolayer MoS2 via In Situ Rhenium Substitutional Doping (Adv. Funct. Mater. 16/2018). Advanced Functional Materials, 28(16), 1870105.Wiley. doi: 10.1002/adfm.201870105.

Zhang, K., Bersch, B.M., Zhang, F., Briggs, N.C., Subramanian, S., Xu, K., Chubarov, M., Wang, K., Lerach, J.O., Redwing, J.M., Fullerton-Shirey, S.K., Terrones, M., & Robinson, J.A. (2018). Considerations for Utilizing Sodium Chloride in Epitaxial Molybdenum Disulfide. ACS APPLIED MATERIALS & INTERFACES, 10(47), 40831-40837.American Chemical Society (ACS). doi: 10.1021/acsami.8b16374.

(2017). (Invited) MoS2 Field-Effect Transistors Gated with a Two-Dimensional Electrolyte. ECS Meeting Abstracts.The Electrochemical Society. doi: 10.1149/ma2017-01/29/1362.

Li, H.M., Xu, K., Bourdon, B., Lu, H., Lin, Y.C., Robinson, J.A., Seabaugh, A.C., & Fullerton-Shirey, S.K. (2017). Electric Double Layer Dynamics in Poly(ethylene oxide) LiClO4 on Graphene Transistors. JOURNAL OF PHYSICAL CHEMISTRY C, 121(31), 16996-17004.American Chemical Society (ACS). doi: 10.1021/acs.jpcc.7b04788.

Subramanian, S., Deng, D.D., Xu, K., Simonson, N., Wang, K., Zhang, K., Li, J., Feenstra, R., Fullerton-Shirey, S.K., & Robinson, J.A. (2017). Properties of synthetic epitaxial graphene/molybdenum disulfide lateral heterostructures. CARBON, 125, 551-556.Elsevier BV. doi: 10.1016/j.carbon.2017.09.058.

Xu, K., Lu, H., Kinder, E.W., Seabaugh, A., & Fullerton-Shirey, S.K. (2017). Monolayer Solid-State Electrolyte for Electric Double Layer Gating of Graphene Field-Effect Transistors. ACS NANO, 11(6), 5453-5464.American Chemical Society (ACS). doi: 10.1021/acsnano.6b08505.

Zhang, K., Borys, N.J., Bersch, B.M., Bhimanapati, G.R., Xu, K., Wang, B., Wang, K., Labella, M., Williams, T.A., Haque, M.A., Barnard, E.S., Fullerton-Shirey, S., Schuck, P.J., & Robinson, J.A. (2017). Deconvoluting the Photonic and Electronic Response of 2D Materials: The Case of MoS2. SCIENTIFIC REPORTS, 7(1), 16938.Springer Science and Business Media LLC. doi: 10.1038/s41598-017-16970-6.

(2016). Design and Applications of Graphene- and Biomolecule-Based Nanosensors and Nanodevices. In Graphene Science Handbook. (pp. 21-30).CRC Press. doi: 10.1201/b19488-9.

Xu, K., Pratap, P., Dutta, M., & Stroscio, M. (2016). Design and Applications of Grapheneand Biomolecule-Based Nanosensors and Nanodevices. In Graphene Science Handbook. (pp. 3-12).CRC Press. doi: 10.1201/b19488-3.

Meshik, X., Xu, K., Dutta, M., & Stroscio, M.A. (2014). Optical Detection of Lead and Potassium Ions Using a Quantum-Dot-Based Aptamer Nanosensor. IEEE TRANSACTIONS ON NANOBIOSCIENCE, 13(2), 161-164.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TNB.2014.2317315.

Xu, K., Meshik, X., Nichols, B.M., Zakar, E., Dutta, M., & Stroscio, M.A. (2014). Graphene- and aptamer-based electrochemical biosensor. NANOTECHNOLOGY, 25(20), 205501.IOP Publishing. doi: 10.1088/0957-4484/25/20/205501.

Xu, K., Purahmad, M., Brenneman, K., Meshik, X., Farid, S., Poduri, S., Pratap, P., Abell, J., Zhao, Y., Nichols, B., Zakar, E., Stroscio, M., & Dutta, M. (2014). Design and Applications of Nanomaterial-Based and Biomolecule-Based Nanodevices and Nanosensors. In Challenges and Advances in Computational Chemistry and Physics. 16, (pp. 61-97).Springer Netherlands. doi: 10.1007/978-94-017-8848-9_3.

Xu, K., Purahmad, M., Brenneman, K., Meshik, X., Farid, S., Poduri, S., Pratap, P., Abell, J., Zhao, Y., Nichols, B., Zakar, E., Stroscio, M., & Dutta, M. (2014). Design and applications of nanomaterial-based and biomolecule-based nanodevices and nanosensors. In Design and Applications of Nanomaterials for Sensors. (pp. 61-97). doi: 10.1007/978-94-017-8848-9_3.

Xu, K., Erricolo, D., Dutta, M., & Stroscio, M.A. (2012). Electrical conductivity and dielectric properties of PMMA/graphite nanoplatelet ensembles. SUPERLATTICES AND MICROSTRUCTURES, 51(5), 606-612.Elsevier BV. doi: 10.1016/j.spmi.2012.03.001.

Single- versus Dual-Ion Conductors for Electric Double Layer Gating: Finite Element Modeling and Hall-Effect Measurements. American Chemical Society (ACS). doi: 10.1021/acsami.0c08653.s001.

Subramania, S., Xu, K., Moser, S.K., Deng, D., Li, J., Feenstra, R.M., Fullerton-Shirey, S.K., & Robinson, J.A. (2019). Engineering p-n junctions in grapbene/molybdenum disulfide heterostructures. In 2019 Device Research Conference (DRC), 2019-June, (pp. 83-84).IEEE. doi: 10.1109/drc46940.2019.9046431.

Xu, K., Bostian, E., Woeppel, A., Ding, H., Islam, M.M., Guzman, D., Seabaugh, A.C., Strachan, A., Beckman, E.J., & Fullerton-Shirey, S. (2018). Using Ions to Control Transport in Two-Dimensional Materials for Ion-Controlled Electronics. In 2018 IEEE 13th Nanotechnology Materials and Devices Conference (NMDC).IEEE. doi: 10.1109/nmdc.2018.8605868.

Xu, K., Chu, T., Bourdon, B., Seabaugh, A., Chen, Z., & Fullerton-Shirey, S. (2015). Reconfigurable p-n junction formation and bandgap opening in bilayer graphene using polyethylene oxide and CsClO4 solid polymer electrolyte. Poster session presented at the meeting of 2015 73rd Annual Device Research Conference (DRC).Columbus, OH, USA.

Xu, K., Meshik, X., Choi, M., Dutta, M., Stroscio, M., Wu, T.C., Rahman, M., & Norton, M. (2014). Study of electric field caused by semiconductor quantum dots in close proximity to DNA origami. In 2014 International Workshop on Computational Electronics (IWCE).IEEE. doi: 10.1109/iwce.2014.6865880.

Brenneman, K.L., Abell, J., Meshik, X., Xu, K., Zhao, Y., Dutta, M., & Stroscio, M.A. (2012). Surface-enhanced Raman spectroscopy study of single stranded DNA sequences on silver nanorod array. In AIP Conference Proceedings, 1506(1), (pp. 53-56).AIP. doi: 10.1063/1.4772525.

Meshik, X., Brenneman, K., Xu, K., Ranginwala, S., Abell, J., Zhao, Y., Dutta, M., & Stroscio, M. (2012). Surface-enhanced Raman spectroscopy signatures of an RNA molecule: An aptamer that binds to αvβ3 integrin. In AIP Conference Proceedings, 1506(1), (pp. 49-52).AIP. doi: 10.1063/1.4772524.

Xu, K., Abell, J., Zhao, Y., Qian, J., Brenneman, K., Meshik, X., Dutta, M., & Stroscio, M. (2012). Surface-enhanced Raman spectroscopy as a tool for characterizing nanostructures containing molecular components. In AIP Conference Proceedings, 1506(1), (pp. 57-61).AIP. doi: 10.1063/1.4772526.

Xu, K., Qian, J., Shukla, P., Dutta, M., & Stroscio, M.A. (2012). Graphene-based FET structure: Modeling FET characteristics for an aptamer-based analyte sensor. In 2012 15th International Workshop on Computational Electronics.IEEE. doi: 10.1109/iwce.2012.6242868.