Presentations

 

  • “Bilayer crystals growth and conversion by non-equilibrium synthesis and processing”, SPIE Photonics West, San Francisco, California, January 27-February 1, 2024. (Invited talk)
  • “Understanding the sequential growth of bilayer MoS2 on SiO2 substrates by Mo isotope labeling”, AVS 69th International Symposium & Exhibition, Portland, Oregon, November 5-10, 2023.
  • “Defects engineering in 2D materials through non-equilibrium synthesis and processing” 2023 Annual Meeting of the APS Mid-Atlantic Section, University of Delaware, Newark, Delaware, November 3–5, 2023. (Invited talk)
  • “Nonequilibrium Synthesis of 2D Materials with Real Time Diagnostics and Adaptive Control” 2nd Oak Ridge National Laboratory-Vanderbilt University (ORNL-VU) Collaborative Workshop, Oak Ridge, September 18-19, 2023. (Invited talk)
  • “Van der Waals epitaxial growth of 2D materials and heterostructures”, 23rd American Conference on Crystal Growth and Epitaxy (ACCGE-23)
and 21st US Workshop on Organometallic Vapor Phase Epitaxy (OMVPE-21). Tucson, Arizona, USA, August 13-18, 2023. (Invited talk)
  • “Tuning the Optical Properties of 2D Materials by Nonequilibrium Synthesis and Processing”at CLEO’23, San Jose, CA, May 8, 2023. (Invited talk)
  • Understanding the van der Waals epitaxial growth of 2D materials and heterostructures”, 2023 Lawrence Symposium on Epitaxy, Arizona State University, Phoenix, AZ, January 5-6, 2023. (Invited talk)
  • “Tailoring the heterogeneities in 2D materials by non-equilibrium synthesis and processing”, Physics Colloquium, School of Science and Engineering, Tulane University, October 31, 2022.
  • Isotope effect on the thermal and optical properties of atomically thin 2D materials”, the 20th International Symposium on the Physics of Semiconductors and Applications (ISPSA 2022), Jeju, Korea, July 17~21, 2022 (Invited talk)
  • Nonequilibrium synthesis to tailor heterogeneity in 2D materials”, the Guadalupe Workshop X on single wall carbon nanotubes and related materials, Hill Country, TX, May 13-17, 2022. (Invited talk)

  • Defect Engineering in 2D Materials by Non-equilibrium Synthesis and Processing”, International Conference on Advances in Functional Materials (AAAFM-UCLA), August, 18-20, 2021, virtual (Invited talk)

  • In situ x-ray and neutron diffraction studies of crystallization mechanism and phase transformation of hybrid perovskites”, Materials Synthesis Science and Opportunities Aided by in-situ Scattering Tools Workshop in the 2021 Joint Nanoscience and Neutron Scattering User Meeting, August 9-12, 2021 (Invited talk)
  • 2D Materials for Interconnects”, Creating Helpful Incentives to Produce Semiconductors (CHIPS) for America Act, ORNL Internal Lab Strategy Workshop, July 7–8, 2021 (invited talk)
  • Tailoring the optoelectronic functionality of 2D materials by non-equilibrium synthesis and processing”, The Northrop Grumman/Brookhaven Lab Workshop, May 5-5, 2021. (Invited talk) 
  • Virtual MRS Spring/Fall meeting CNMS, “Tailoring Synthesis and Assembly of 2D Materials for Monolayer and Bilayer heterostructures”, Nov 27-Dec 4, 2020. (invited talk).
  • “Synthetic strain engineering in 2D materials”, Mechanic Engineering Department Colloquium, Villanova University, November 13, 2020.
  • “Heterogeneity in 2D materials: synthesis and functionality”, Georgia State University, Department of Physics and Astronomy Colloquium, 11/10/2020.
  • “Defect-Mediated Phase Transformations in Highly Anisotropic 2D Quantum Materials”, CNMS User Meeting, Oak Ridge, Aug 10-12, 2020.
  • “ Toward Synthetic Control over Heterogeneity and Functionality in 2D Quantum Materials”, CNMS Seminar, Oak Ridge, TN, March 10, 2020.
  • “Tailoring the Heterogeneities in 2D Materials by Controlled Synthesis and Processing”, AVS 66th International Symposium & Exhibition, Columbus, Ohio, October 20-25, 2019.
  • “Tailoring the heterogeneity in 2D materials for optoelectronics and quantum information science” at the University of Tennessee at Knoxville – Department of Materials Science & Engineering – Materials Seminar, Knoxville, TN, October 8, 2019.
  • “Toward Synthetic Control over Heterogeneity and Functionality in Two-Dimensional Materials”, 2019 Synthesis and Processing Science Principal Investigators’ Meeting, Gaithersburg Marriott Washingtonian Center, Gaithersburg, MD, July 17-19, 2019.
  • “The shape of things to come for 2D materials: a pentagonal layered PdSe2 for electronics”, 2019 Graphene & Beyond workshop, Penn State University, State College, PA, May 8-10, 2019.
  • “The Effect of Doping, Vacancies and Isotopes on the Thermal Conductivity of 2D Materials”, MRS Spring Meeting, Phoenix, Arizona, April 22-26, 2019.
  • “Defect-Induced Phase Transformation in Low-Symmetry 2D Materials for High Performance Electronics”, MRS Spring Meeting, Phoenix, Arizona, April 22-26, 2019. (contributed talk).
  • “Tailoring the heterogeneities in 2D materials by controlled synthesis and processing”, The TMS 148th Annual Meeting and Exhibition, Mar 10-14, 2019, San Antonio, Texas. (Invited talk).
  • “Strain-Engineered Growth of 2D Materials on Patterned Substrates”, MRS Spring Meeting, Phoenix, Arizona, April 2-6, 2018.
  • “Heterogeneity in 2D Materials: From Localized Defects to Macroscopic Heterostructures”, Department of Physics & Astronomy, Vanderbilt University, Jan 18, 2018.
  • “Tailoring the heterogeneity in 2D materials for optoelectronics”, XXVII International Materials Research Congress, Cancun, Mexico, August 19-24, 2018.
  • “Toward Synthetic Control over Heterogeneity and Functionality in Two-Dimensional Materials”, 2017 Synthesis and Processing Science Principal Investigators’ Meeting, Gaithersburg Marriott Washingtonian Center, Gaithersburg, MD November 7-9, 2017.
  • “Heterogeneity in 2D Materials: From Localized Defects, Isoelectronic Doping to Macroscopic Heterostructures”,The 64th AVS International Symposium and Exhibition, Oct 29-Nov 3, 2017, Tampa, Florida. (Invited talk)
  • “2D materials: synthesis and functionality”, College of Engineering, University of Georgia, October 23, 2017.
  • “Defect engineering in two dimensional materials”, The 7th International Conference on Nanoscience & Nanotechnology, China 2017, August 29-31, Beijing, China. (Invited talk)
  • “2D materials research at ORNL”, Synthesis and Collective Phenomena in 2D and Layered Materials Workshop at 2017 Joint Nanoscience and Neutron Scattering User Meeting, Oak Ridge, TN, July 31, 2017. (Invited talk)
  • “Edge-Controlled Growth and Etching of Two-Dimensional Materials”, 9th International Conference on Materials for Advanced Technologies (ICMAT), Suntec Singapore, June 18-23, 2017. (Invited talk)
  • “Defect Engineering in Monolayer MoSe2 through Controlled Synthesis and Doping”, MRS Spring Meeting, Phoenix, AZ, April 16-21, 2017. (Invited talk)
  • “Understanding the Growth of 2D Materials for Optoelectronic Devices”, Guadalupe workshop on Nucleation and Growth Mechanisms of Atomically-Thin Nanomaterials: From SWCNTs to 2D Crystals”, San Antonio, Texas, April 21-25, 2017.
  • “Epitaxial Growth and Optoelectronic Properties of 2D Materials”, International Graphene Innovation Conference, Qingdao, China, September 22-24, 2016. (Invited talk).
  • “Heterogeneity in 2D systems: From localized defects to macroscopic van der Waals heterostructures”, CNMS User Meeting Workshop: Collective Phenomena in Layered and 2D Materials, Oak Ridge, TN, August 9-10, 2016. (Invited talk)
  • “Controlled synthesis and processing of perovskite films for high-efficiency Organometal Halide Perovskite Photovoltaics”, IUMRS-International Conference on Electronic Materials, Suntec, Singapore, July 4-8, 2016. (Invited talk)
  • “Isoelectronic Doping of MoSe2 Monolayers for 2D Heterostructures”, IUMRS-International Conference on Electronic Materials, Suntec, Singapore, July 4-8, 2016.
  • “Understanding the Effect of Solvent Additive on Nanophase Engineering in Organic Photovoltaics”, The 30th Chinese Chemical Society (CCS) Congress, Dalian, China, July 1-4, 2016. (Invited talk)
  • “Isoelectronic Doping of MoSe2 Monolayers for 2D Heterostructures”, Graphene and Beyond workshop, Penn State University, State College, PA, May 9-10, 2016. (Invited talk)
  • “Ultrasonic Spray Printing for High-Performance Flexible Organic Field-Effect Transistors and Hybrid Perovskite Solar Cells”, The 145th TMS Annual Meeting & Exhibition, Recent Advancement on Stretchable and Wearable Electronics, Nashville, TN, February 14-18, 2016. (Invited talk)
  • “Synthesis, processing, and optoelectronic devices of van der Waals heterostructures”, The 40th International Conference and Exposition on Advanced Ceramics and Composites, Daytona Beach, FL, January 24-29, 2016. (Invited talk)
  • “Van der Waals Epitaxial Growth of Atomically Thin Lattice-misfit GaSe/MoSe2 Heterostructures”, the 2nd International Conference on Two-Dimensional Layered Materials, Hong Kong, January 7-9, 2016. (Invited talk)
  • “Heterogeneity in 2D systems: From Doped Monolayers to van der Waals Heterostructures”, Physical Sciences Directorate Chemical and Materials Sciences Seminar, ORNL, Oak Ridge, November 18, 2015. (Invited seminar)
  • “Synthesis of Two-Dimensional Metal Chalcogenides by Laser Vaporization and CVD”, 2015 Synthesis and Processing Science Principal Investigators’ Meeting, Washington DC North/Gaithersburg, Gaithersburg, MD, November 2-4, 2015.
  • “Understanding the effect of deuterated conducting polymer and solvent additive on the performance of organic photovoltaics”, SNS/HFIR 2015 User Meeting, Oak Ridge, October 26-27, 2015.
  • “Controlled Synthesis and Processing of Organometal Halide Perovskite Thin Film for high-efficiency Photovoltaics”, Department of Physics and Astronomy, University of Georgia, Athens, October 29, 2015.
  • “Effect of Isoelectronic Doping on the Optoelectronic Properties of MoSe2 Monolayer Crystals”, The 6th International Conference on Nanoscience & Technology, Beijing, China, Sep. 3-5, 2015. (Invited talk)
  • “Understanding the Effect of Solvent Additive on the Performance of Organic Photovoltaics”, 23rd World Forum on Advanced Materials, Lincoln, Nebraska, May 11-15, 2015. (Invited talk)
  • “Revealing the Origin of High-Efficiency in Layer-by-Layer Processed Organometal Halide Perovskite Photovoltaics”, MRS spring conference, San Francisco, April 7-12, 2015.
  • “Twisted Bilayer and Tri-layer Two Dimensional Metal Chalcogenides: Controlled Synthesis, Characterization, and Optoelectronic Devices”, Department of Mechanical Engineering, University of Houston, February 12, 2015. (Invited seminar)
  • “The Isotopic Effects of Deuteration on the Charge Transport and Optoelectronic Properties of Conducting Polymers,” XXIII International Materials Research Congress, August 17 – 21, 2014, Cancún, Mexico. (Invited talk)
  • “Synthesis and Properties of Two-Dimensional Layered Metal-Chalcogenides and their Heterostructures,” International Symposium on “Materials Chemistry of Two-Dimensional Crystals, at Peking University, Beijing, China, August 5-6, 2014. (Invited talk)
  • “The isotopic effects deuteration on the optoelectronic properties of conducting polymers,” American Conference on Neutron Scattering, Knoxville, TN, USA, June 1-5, 2014.
  • “Two-dimensional Chalcogenide Crystals: Synthesis, Characterization, and Optoelectronics”, Department of Materials Science and Engineering Seminar, University of Tennessee, Knoxville, March 7, 2014. (Invited seminar)
  • “Substrate-mediated assembly and growth of organic semiconductor nanostructures,” The 5th International Conference on Nanoscience & Technology, Beijing, China, Sep. 5-7, 2013. (Invited talk)
  • “Understanding the metal-directed growth of semiconducting organic nanocrystals,” Joint NSRC Workshop on Nanoparticle Science, November 5-6, 2012 Argonne National Laboratory.
  • “Isotope Effect of Deuterated P3HT on Charge Transport and Solar Harvesting,” International Conference on Science and Technology of Synthetic Metals, Atlanta, Georgia, July 8-13, 2012.
  • “Self-Assembly of Conjugated Block Copolymers for Organic Field-Effect Transistors and Photovoltaics,” The 10th Int. Symposium on Functional π-Electron Systems, Beijing, China, Oct. 13, 2011.
  • “Self-Assembled Single Crystal Organic Nanowires for High-performance Memory Devices,” Workshop on Self-Assembled Organic Nanomaterials: Structure and Function at The Molecular Foundry, Lawrence Berkeley National Laboratory, San Francisco, CA, Oct. 5-6, 2011. (Invited talk)
  • “Block Copolymer Controlled Morphology of P3HT/PCBM Photovoltaics,” 4th Workshop on Sustainable Energy Future: Nanomaterials Enabled Photovoltaics, ORNL, Oak Ridge, TN, Sept. 22-23, 2011.
  • “Tailored Assemblies of PS-b-P3HT Diblock Copolymers: Adaptable Building Blocks for High-Performance Organic Transistors and Solar Cells”, 2011 EBMC-NSRC Contractors’ Meeting, Annapolis, MD, May 31, 2011.
  • “One-Dimensional Electron-Transport in Self-Assembled Organic Nanowires,” 9th International Symposium on Functional π-Electron Systems, Atlanta, GA, Oct. 6, 2010.
  • “Synthesis of Organic Semiconductor Nanowires for Solar Cells”, 3th Workshop on Sustainable Energy Future: Nanomaterials Enabled Photovoltaics, ORNL, Oak Ridge, TN, Sept. 22, 2010.
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