Experimental

Department of Chemistry, University of Pittsburgh
Ph.D., Louisiana State University, 2020
Summary:

Dr. Xin Gui is an assistant professor in the Department of Chemistry at the University of Pittsburgh. He received his Ph.D. degree from Louisiana State University with Prof. Weiwei Xie and did his postdoc work with Prof. Robert J. Cava at Princeton University. As a solid-state chemistry people, his work is mainly about design and synthesis of novel quantum materials in chemistry ways, such as superconductors, magnetic topological materials, quantum spin liquids, etc. Moreover, connecting these new quantum materials with real-life applications (quantum computers, spintronic devices, heterogeneous catalysis etc.) is another major direction of his research.

Selected Publications: 
  1. “LaIr 3 Ga 2 : A Superconductor based on a Kagome Lattice of Ir.” Gui, X.; Cava, R. J. Chem. Mater. 
  2. “Ferromagnetic Cr 4 PtGa 17 : A Half-Heusler-Type Compound with a Breathing Pyrochlore Lattice.” Gui, X.; Feng, E.; Cao, H.; Cava, R. J. J. Am. Chem. Soc.
  3. “A Novel Magnetic Material by Design: Observation of Yb 3+ with Spin-1/2 in Yb x Pt 5 P.” Gui, X.; Chang, T.-R.; Wei, K.; Daum, M. J.; Graf, D. E.; Baumbach, R. E.; Mourigal, M.; Xie, W. ACS Cent. Sci.
  4. “Design and Synthesis of a New Layered Rare-Earth-Free Ferromagnet: MnPt5 As.” Gui, X.; Xie, W. Chem. Mater.
  5. “A New Magnetic Topological Quantum Material Candidate by Design.” Gui, X.; Pletikosic, I.; Cao, H.; Tien, H.J.; Xu, X.; Zhong, R.; Wang, G.; Chang, T.R.; Jia, S.; Valla, T.; Xie, W.; Cava, R. J. ACS Cent. Sci.
Most Cited Publications
  1. "A new magnetic topological quantum material candidate by design." Xin Gui, Ivo Pletikosic, Huibo Cao, Hung-Ju Tien, Xitong Xu, Ruidan Zhong, Guangqiang Wang, Tay-Rong Chang, Shuang Jia, Tonica Valla, Weiwei Xie, Robert J Cava. ACS Central Science.
  2. "Crystal growth and quantum oscillations in the topological chiral semimetal CoSi." Xitong Xu, Xirui Wang, Tyler A. Cochran, Daniel S. Sanchez, Guoqing Chang, Ilya Belopolski, Guangqiang Wang, Yiyuan Liu, Hung-Ju Tien, Xin Gui, Weiwei Xie, M. Zahid Hasan, Tay-Rong Chang, and Shuang Jia. Physical Review B.
  3. "Magnetic order induces symmetry breaking in the single-crystalline orthorhombic CuMnAs semimetal." Eve Emmanouilidou, Huibo Cao, Peizhe Tang, Xin Gui, Chaowei Hu, Bing Shen, Junyi Wu, Shou-Cheng Zhang, Weiwei Xie, Ni Ni. Physical Review B.
  4. "Enhanced anomalous Hall effect in the magnetic topological semimetal Co3Sn2-xInxS2." Huibin Zhou, Guoqing Chang, Guangqiang Wang, Xin Gui, Xitong Xu, Jia-Xin Yin, Zurab Guguchia, Songtian S. Zhang, Tay-Rong Chang, Hsin Lin, Weiwei Xie, M. Zahid Hasan, and Shuang Jia. Physical Review B.
  5. "Quantum oscillation evidence for a topological semimetal phase in ZrSnTe." Jin Hu, Yanglin Zhu, Xin Gui, David Graf, Zhijie Tang, Weiwei Xie, Zhiqiang Mao. Physical Review B.  
Recent Publications
  1. "Multiple mobile excitons manifested as sidebands in quasi-one-dimensional metallic TaSe3." Junzhang Ma, Simin Nie, Xin Gui, Muntaser Naamneh, Jasmin Jandke, Chuanying Xi, Jinglei Zhang, Tian Shang, Yimin Xiong, Itzik Kapon, Neeraj Kumar, Yona Soh, Daniel Gosálbez-Martínez, Oleg V Yazyev, Wenhui Fan, Hannes Hübener, Umberto De Giovannini, Nicholas Clark Plumb, Milan Radovic, Michael Andreas Sentef, Weiwei Xie, Zhijun Wang, Christopher Mudry, Markus Müller, Ming Shi. Nature Materials.
  2. "Metal-Insulator Transition and Anomalous Lattice Parameters Changes in Ru-doped VO2." Xin Gui, Robert J Cava. arXiv preprint arXiv:2203.14160
  3. "Twist-angle effects on the quantum transport in twisted bilayer WTe2 devices." Yue Tang, Yanyu Jia, Pengjie Wang, Guo Yu, Ratnadwip Singha, Xin Gui, Kenji Watanabe, Takashi Taniguchi, Robert Cava, Leslie Schoop, Sanfeng Wu. Bulletin of the American Physical Society
  4. "Characterization and Quantum Transport of Small-Angle Twisted Bilayer WTe2." Guo Yu, Pengjie Wang, Yanyu Jia, Xin Gui, Ratnadwip Singha, Kenji Watanabe, Takashi Taniguchi, Leslie Schoop, Robert Cava, Sanfeng Wu. Bulletin of the American Physical Society.
  5. "A New Superconductor with Ir Kagome Lattice." Xin Gui, Robert Cava. Bulletin of the American Physical Society
Department of Chemistry, University of Pittsburgh
Ph.D., Massachusetts Institute of Technology, 2018
Summary:

Wes is a new assistant professor in the Department of Chemistry at the University of Pittsburgh, and the Transue lab will focus on the use of inorganic synthesis to investigate the role of molecules in the second quantum revolution. Careful metal selection and ligand design will allow a methodical approach to preparation of molecules with desirable optical and magnetic properties, such as the DiVincenzo criteria for quantum bits (“qubits”). Experimental characterization of these molecules will be central to defining the electronic structure, and a major focus of the lab will involve investigations of the ground and excited states using electron paramagnetic resonance (EPR) and magnetic circular dichroism (MCD) spectroscopies. 

Most Cited Publications
  1. "[Ir(N^N^N)(C^N)L]+: A New Family of Luminophores Combining Tunability and Enhanced Photostability." Danielle N Chirdon, Wesley J Transue, Husain N Kagalwala, Aman Kaur, Andrew B Maurer, Tomislav Pintauer, Stefan Bernhard. Inorganic chemistry.
  2. "Mechanism and scope of phosphinidene transfer from dibenzo-7-phosphanorbornadiene compounds." Wesley J Transue, Alexandra Velian, Matthew Nava, Cristina García-Iriepa, Manuel Temprado, Christopher C Cummins. Journal of the American Chemical Society.
  3. "Highly Fluorinated Ir(III)–2,2′:6′,2″-Terpyridine–Phenylpyridine–X Complexes via Selective C–F Activation: Robust Photocatalysts for Solar Fuel Generation and Photoredox Catalysis." Jonathan A Porras, Isaac N Mills, Wesley J Transue, Stefan Bernhard. Journal of the American Chemical Society.
  4. "Kinetic analysis of amino acid radicals formed in H2O2-driven CuI LPMO reoxidation implicates dominant homolytic reactivity." Stephen M Jones, Wesley J Transue, Katlyn K Meier, Bradley Kelemen, Edward I Solomon. Proceedings of the National Academy of Sciences.
  5. "Spectroscopic Characterization, Computational Investigation, and Comparisons of ECX (E = As, P, and N; X = S and O) Anions." Gao-Lei Hou, Bo Chen, Wesley J Transue, Zheng Yang, Hansjörg Grützmacher, Matthias Driess, Christopher C Cummins, Weston Thatcher Borden, Xue-Bin Wang. Journal of the American Chemical Society.
Recent Publications
  1. "The three-spin intermediate at the O–O cleavage and proton-pumping junction in heme–Cu oxidases." Anex Jose, Andrew W Schaefer, Antonio C Roveda Jr, Wesley J Transue, Sylvia K Choi, Ziqiao Ding, Robert B Gennis, Edward I Solomon. Science.
  2. "31P NMR Chemical Shift Tensors: Windows into Ruthenium Phosphinidene Complex Electronic Structures." Wesley J Transue, Yizhe Dai, Martin-Louis Y Riu, Gang Wu, Christopher C Cummins. Inorganic Chemistry.
  3. "An Azophosphine Synthetic Equivalent of Mesitylphosphaazide and Its 1,3-Dipolar Cycloaddition Reactions." Martin-Louis Y Riu, Wesley J Transue, Jan M Rall, Christopher C Cummins. Journal of the American Chemical Society.
  4. "A Thioether-Ligated Cupric Superoxide Model with Hydrogen Atom Abstraction Reactivity." Mayukh Bhadra, Wesley J Transue, Hyeongtaek Lim, Ryan E Cowley, Jung Yoon C Lee, Maxime A Siegler, Patrick Josephs, Gerald Henkel, Markus Lerch, Siegfried Schindler, Adam Neuba, Keith O Hodgson, Britt Hedman, Edward I Solomon, Kenneth D Karlin. Journal of the American Chemical Society.
  5. "Synthesis of an Anthracene-Based Macrocyclic Diphosphine Ligand." Martin-Louis Y Riu, Wesley J Transue, Ioana Knopf, Christopher C Cummins. Organometallics.
Department of Mechanical Engineering and Materials Science
PhD, Materials Science and Engineering, Carnegie Mellon University
Summary:

Prof. Paul Ohodnicki has a wide range of research interests spanning magnetic, optical, and electronic functional materials and their device level applications.  He has a particular interest in the science and engineering of nanocomposite based materials with multiple phases intermixed at the nm-scale, for which the tailoring of chemistry, microstructure, and even atomic level defects can enable new properties that are not attainable in conventional materials.  Such materials have been applied to a wide range of device level applications including both optical fiber and passive wireless sensors, as well as magnetic components for power applications including inductors, transformers, and rotating electrical machinery. 

Prof. Ohodnicki embraces interdisciplinary research with a particular interest in challenging scientific topics that require expertise spanning the traditional disciplines of materials science, physics, and electrical engineering.  In addition to his research interests, he also serves as the associate coordinator for the engineering science program which promotes an interdisciplinary science and engineering education uniquely tailored to solve such challenging problems.

Selected Publications: 
  • "Soft magnetic materials in high-frequency, high-power conversion applications."  AM Leary, PR Ohodnicki, and ME McHenry.  JOM 64 (7), 772-781 (2012)
  • "Plasmonic nanocomposite thin film enabled fiber optic sensors for simultaneous gas and temperature sensing at extreme temperatures."  PR Ohodnicki, MP Buric, TD Brown et.al.  Nanoscale 5 (19), 9030-9039 (2013)
  • "SAW Sensors for Chemical Vapors and Gases."  J Devkota, PR Ohodnicki, and DW Greve.  Sensors 17 (4), 801 (2017)
  • "Composition dependence of field induced anisotropy in ferromagnetic and amorphous and nanocrystalline ribbons."  PR Ohodnicki, J Long, DE Laughlin, ME McHenry, V Keylin, and J Huth.  Journal of Applied Physics 104 (11), 113909 (2008)
  • "Metal amorphous nanocomposite (MANC) alloy cores with spatially tuned permeability for advanced power magnetics applications."  K Byerly, PR Ohodnicki, SR Moon et.al.  JOM 70 (6), 879-891 (2018)
Most Cited Publications
  1. "Active Sites and Structure–Activity Relationships of Copper-Based Catalysts for Carbon Dioxide Hydrogenation to Methanol." Sittichai Natesakhawat, Jonathan W Lekse, John P Baltrus, Paul R Ohodnicki Jr, Bret H Howard, Xingyi Deng, Christopher Matranga. ACS Catalysis.
  2. "Size-dependent photocatalytic reduction of CO2 with PbS quantum dot sensitized TiO2 heterostructured photocatalysts." Congjun Wang, Robert L Thompson, Paul Ohodnicki, John Baltrus, Christopher Matranga. Journal of Materials Chemistry.
  3. "Sensor devices comprising a metal-organic framework material and methods of making and using the same." Chih-Hung Chang, Ki-Joong Kim, Alan X Wang, Yujing Zhang, Xinyuan Chong, Paul R Ohodnicki. US Patent.
  4. "Visible light plasmonic heating of Au–ZnO for the catalytic reduction of CO2." Congjun Wang, Oshadha Ranasingha, Sittichai Natesakhawat, Paul R Ohodnicki, Mark Andio, James P Lewis, Christopher Matranga. Nanoscale.
  5. "Efficient Electrochemical CO2 Conversion Powered by Renewable Energy." Douglas R Kauffman, Jay Thakkar, Rajan Siva, Christopher Matranga, Paul R Ohodnicki, Chenjie Zeng, Rongchao Jin. ACS applied materials & interfaces.
Recent Publications
  1. "Prediction of good glass forming ability in amorphous soft magnetic alloys by thermocalc simulation with experimental validation." Y Krimer, N Aronhime, P Ohodnicki, ME McHenry. Journal of Alloys and Compounds.
  2. "Optical sensor employing a refractive index engineered metal oxide material." Peng Chen, Jacob Lorenzi Poole, Paul R Ohodnicki, Michael Paul Buric. US Patent.
  3. "Microwave diagnostics and passive sensors for pipeline, well-bore, and boiler-tube monitoring." Paul Ohodnicki, Jagannath Devkota, David W Greve. US Patent.
  4. "Nanostructured CuS Thin Film via a Spatial Successive Ionic Layer Adsorption and Reaction Process Showing Significant Surface-Enhanced Infrared Absorption of CO2." Yujing Zhang, Xinyuan Chong, Hao Sun, Muaz Kedir, Ki-Joong Kim, Paul Ohodnicki, Alan Wang, Chih-hung Chang. Journal of Materials Chemistry C.
  5. "Nanostructured sapphire optical fiber embedded with Au nanorods for high-temperature plasmonics in harsh environments." Kai Liu, Jeffrey Wuenschell, Subhabrata Bera, Renhong Tang, Paul R Ohodnicki, Henry Du. Optics Express.
Department of Mechanical Engineering & Materials Science
PhD, Mechanical Engineering, Georgia Institute of Technology
Summary:

Dr. Zhao’s interdisciplinary background cultivates her research interest in integrating precision engineering and additive manufacturing to realize the vision of advanced manufacturing. Her research lab, the ZIP-AM (ZXY Intelligent Precision Additive Manufacturing) Laboratory, aims to lead the nascent and significant area of “Measurement Science and Control Technologies for Additive Manufacturing”. The “zippers” (nickname for the ZIP-AM lab members) are motivated to bridge the critical gaps within and between two key research lines in additive manufacturing (AM): (1) process-structure-property and (2) modeling-measurement-control. To address the grand challenges that confront AM, Dr. Zhao’s team studies novel sensors, measurement systems, control strategies, along with high-fidelity process models, to form closed-loop systems for improving the accuracy and precision of various AM processes.

To fulfill AM’s potentials in industry applications, in addition to a substantial research on enhancing the existing AM processes capabilities, Dr. Zhao also dedicates herself to developing innovative manufacturing methodologies and systems by exploring fundamental sciences and by embracing advanced technologies. Overall speaking, with a key research thrust to develop smart precision AM systems, Dr. Zhao and her lab study various advanced manufacturing technologies (including 3D/4D/Bio/Hybrid Printing) for fabricating multi-scale, multi-material and multi-functional structures and systems in demanding applications.

Most Cited Publications
  1. "A data mining approach in real-time measurement for polymer additive manufacturing process with exposure controlled projection lithography." Xiayun Zhao, David W Rosen. Journal of Manufacturing Systems.
  2. "A process planning method for thin film mask projection micro-stereolithography." Amit S Jariwala, Fei Ding, Xiayun Zhao, David W Rosen. ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference.
  3. "Real-time interferometric monitoring and measuring of photopolymerization based stereolithographic additive manufacturing process: sensor model and algorithm." X Zhao, DW Rosen. Measurement Science and Technology.
  4. "A Film Fabrication Process on Transparent Substrate Using Mask Projection Stereolithography." A Jariwala, F Ding, X Zhao, D Rosen. Proceedings of the 19th Solid Freeform Fabrication Symposium, Austin, Texas.
  5. "Process Planning for thick-film mask projection micro stereolithography." Xiayun Zhao. Georgia Institute of Technology.
Recent Publications
  1. "An implementation of real-time feedback control of cured part height in Exposure Controlled Projection Lithography with in-situ interferometric measurement feedback." Xiayun Zhao, David W Rosen. Additive Manufacturing.
  2. "Experimental validation and characterization of a real-time metrology system for photopolymerization-based stereolithographic additive manufacturing process." Xiayun Zhao, David W Rosen. The International Journal of Advanced Manufacturing Technology.
  3. "Process measurement and control for exposure controlled projection lithography." Xiayun Zhao. Georgia Institute of Technology.
  4. "Real-time metrology for photopolymer additive manufacturing with exposure controlled projection lithography." Xiayun Zhao, David Rosen. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY.
  5. "A data mining approach in real-time measurement for polymer additive manufacturing process with exposure controlled projection lithography." Xiayun Zhao, David W Rosen. Journal of Manufacturing Systems.
Department of Electrical and Computer Engineering, University of Pittsburgh
PhD in Electrical and Electronics Engineering, University of Minnesota, 2016
Summary:

Dr. Youngblood will join the Electrical and Computer Engineering Department at the University of Pittsburgh as a tenure-track assistant professor in September 2019. He received his PhD in electrical engineering from the University of Minnesota where his research focused on integrating 2D materials with silicon photonics for high-speed optoelectronic applications. From 2017 to 2019, he worked as a postdoctoral researcher at the University of Oxford developing phase-change photonic devices for integrated optical memory and computation. His research interests include bi-stable optical materials, 2D material optoelectronics, and photonic architectures for machine learning.

Most Cited Publications
  1. "Waveguide-integrated black phosphorus photodetector with high responsivity and low dark current." Nathan Youngblood, Che Chen, Steven J Koester, Mo Li. Nature Photonics. 2015.
  2. "All-optical spiking neurosynaptic networks with self-learning capabilities." J Feldmann, N Youngblood, CD Wright, H Bhaskaran, WHP Pernice. Nature 569 (7755), 208-214. 609. 2019.
  3. "Parallel convolutional processing using an integrated photonic tensor core." J Feldmann, N Youngblood, M Karpov, H Gehring, X Li, M Stappers, ... Nature 589 (7840), 52-58. 2021. 
  4. "Multifunctional graphene optical modulator and photodetector integrated on silicon waveguides." Nathan Youngblood, Yoska Anugrah, Rui Ma, Steven J Koester, Mo Li. Nano letters. 2014. 
  5. "In-memory computing on a photonic platform." C Ríos, N Youngblood, Z Cheng, M Le Gallo, WHP Pernice, CD Wright, ... Science advances 5 (2), eaau5759. 2019. 
Recent Publications
  1. "Photonic (computational) memories: tunable nanophotonics for data storage and computing." C Lian, C Vagionas, T Alexoudi, N Pleros, N Youngblood, C Ríos. Nanophotonics. 2022. 
  2. "Coherent Photonic Crossbar Arrays for Large-Scale Matrix-Matrix Multipication." N Youngblood. IEEE Journal of Selected Topics in Quantum Electronics. 2022. 
  3. "Electronically reconfigurable photonic switches incorporating plasmonic structures and phase change materials." N Farmakidis, N Youngblood, JS Lee, J Feldmann, A Lodi, Xi Li, ... Advanced Science, 2200383. 2022. 
  4. "Designing fast and efficient electrically driven phase change photonics using foundry compatible waveguide-integrated microheaters." JR Erickson, V Shah, Q Wan, N Youngblood, F Xiong. Optics Express 30 (8), 13673-13689. 
  5. "Reconfigurable low-emissivity optical coating using ultrathin phase change materials." N Youngblood, C Talagrand, BF Porter, CG Galante, Skneepkens, ... ACS Photonics 9 (1), 90-100. 2021. 
Department of Electrical Engineering
Ph.D. in Electrical and Computer Engineering, Georgia Tech, 2012
Summary:

The active areas of research are at the interface of Photonics, BioMEMs, and Neuroscience. Using basic principles of physics and advanced engineering techniques, Prof. Chamanzar’s group is designing and implementing novel devices and methods to address outstanding needs in biology and medicine. The main application areas of interest are Neuroscience and Biophotonics. Research on Neuroengineering includes developing next generation multimodal (Acousto-opto-electrical) neural interfaces to understand the neural basis of brain function and realize functional brain-machine interfaces. The Biophotonics front is focused on developing efficient hybrid photonic-plasmonic-fluidic on-chip systems for point of care diagnostics, environmental monitoring, imaging, and spectroscopy. The scope of research encompasses theoretical design and simulation, fabrication and packaging, experimental benchtop characterization, as well as in-vivo, in-vitro, and ex-vivo tests on biological systems.

Most Cited Publications
  1. "Effect of the dielectric constant of the surrounding medium and the substrate on the surface plasmon resonance spectrum and sensitivity factors of highly symmetric systems …," Mahmoud A Mahmoud, Maysamreza Chamanzar, Ali Adibi, Mostafa A El-Sayed. Journal of the American Chemical Society, 134, 6434-6442 (2012)
  2. "High resolution on-chip spectroscopy based on miniaturized microdonut resonators," Zhixuan Xia, Ali Asghar Eftekhar, Mohammad Soltani, Babak Momeni, Qing Li, Maysamreza Chamanzar, Siva Yegnanarayanan, Ali Adibi. Optics express, 19, 12356-12364 (2011)
  3. "On-chip hybrid photonic–plasmonic light concentrator for nanofocusing in an integrated silicon photonics platform," Ye Luo, Maysamreza Chamanzar, Aniello Apuzzo, Rafael Salas-Montiel, Kim Ngoc Nguyen, Sylvain Blaize, Ali Adibi. Nano letters, 15, 849-856 (2015)
  4. "Hybrid integrated plasmonic-photonic waveguides for on-chip localized surface plasmon resonance (LSPR) sensing and spectroscopy," Maysamreza Chamanzar, Zhixuan Xia, Siva Yegnanarayanan, Ali Adibi. Optics express, 21, 32086-32098 (2013)
  5. "Energy-looping nanoparticles: harnessing excited-state absorption for deep-tissue imaging," Elizabeth S Levy, Cheryl A Tajon, Thomas S Bischof, Jillian Iafrati, Angel Fernandez-Bravo, David J Garfield, Maysamreza Chamanzar, Michel M Maharbiz, Vikaas S Sohal, P James Schuck, Bruce E Cohen, Emory M Chan. ACS nano, 10, 8423-8433 (2016)
Recent Publications
  1. "Ultrasonically sculpted virtual relay lens for in situ microimaging," Matteo Giuseppe Scopelliti, Maysamreza ChamanzarLight: Science & Applications, 8, 1-15 (2019)
  2. "Ultrasonically sculpted tunable relay lenses for imaging and photo manipulation through turbid media (Conference Presentation)," Matteo Giuseppe Scopelliti, Daniele Busacchio, Maysamreza Chamanzar, Yasin Karimi. Photons Plus Ultrasound: Imaging and Sensing 2019, 10878, International Society for Optics and Photonics (2019)
  3. "In situ acousto-optic 3D beam shaping," Yasin Karimi, Matteo Giuseppe Scopelliti, Maysamreza ChamanzarPractical Holography XXXIII: Displays, Materials, and Applications, 10944, International Society for Optics and Photonics (2019)
  4. "In situ 3D reconfigurable ultrasonically sculpted optical beam paths," Yasin Karimi, Matteo Giuseppe Scopelliti, Ninh Do, Mohammad-Reza Alam, Maysamreza ChamanzarOptics express, 27, 7249-7265 (2019)
  5. "Ultrasonic sculpting of virtual optical waveguides in tissue," Maysamreza Chamanzar, Matteo Giuseppe Scopelliti, Julien Bloch, Ninh Do, Minyoung Huh, Dongjin Seo, Jillian Iafrati, Vikaas S Sohal, Mohammad-Reza Alam, Michel M Maharbiz. Nature communications, 10, 1-10 (2019)
Department of Electrical and Computer Engineering
Ph.D. in Electrical Engineering, Massachusetts Institute of Technology
Summary:

Dr. Xu Zhang will join the Department of Electrical and Computer Engineering (ECE) at Carnegie Mellon University (CMU) as a tenure-track assistant professor in September 2019. He received his PhD and Master’s degrees in electrical engineering from Massachusetts Institute of Technology (MIT) and a bachelor’s degree in physics from University of Science and Technology of China (USTC). Dr. Zhang is currently an Enrico Fermi Fellow at the Argonne National Laboratory. He worked as a postdoctoral associate at Microsystems Technology Laboratories (MTL) at MIT from 2017 to 2018.

Most Cited Publications
  1. "Role of interfacial oxide in high-efficiency graphene–silicon Schottky barrier solar cells." Yi Song, Xinming Li, Charles Mackin, Xu Zhang, Wenjing Fang, Tomás Palacios, Hongwei Zhu, Jing Kong. Nano letters.
  2. "Raman Enhancement Effect on Two-Dimensional Layered Materials: Graphene, h-BN and MoS2." Xi Ling, Wenjing Fang, Yi-Hsien Lee, Paulo T Araujo, Xu Zhang, Joaquin F Rodriguez-Nieva, Yuxuan Lin, Jin Zhang, Jing Kong, Mildred S Dresselhaus. Nano letters.
  3. "Parallel stitching of 2D materials." Xi Ling, Yuxuan Lin, Qiong Ma, Ziqiang Wang, Yi Song, Lili Yu, Shengxi Huang, Wenjing Fang, Xu Zhang, Allen L Hsu, Yaqing Bie, Yi‐Hsien Lee, Yimei Zhu, Lijun Wu, Ju Li, Pablo Jarillo‐Herrero, Mildred Dresselhaus, Tomás Palacios, Jing Kong. Advanced Materials.
  4. "High-Performance WSe2 Complementary Metal Oxide Semiconductor Technology and Integrated Circuits." Lili Yu, Ahmad Zubair, Elton JG Santos, Xu Zhang, Yuxuan Lin, Yuhao Zhang, Tomás Palacios. Nano letters.
  5. "Impact of chlorine functionalization on high-mobility chemical vapor deposition grown graphene." Xu Zhang, Allen Hsu, Han Wang, Yi Song, Jing Kong, Mildred S Dresselhaus, Tomás Palacios. ACS nano.
Recent Publications
  1. "Asymmetric hot-carrier thermalization and broadband photoresponse in graphene-2D semiconductor lateral heterojunctions." Tomás Palacios/ Yuxuan Lin, Qiong Ma, Pin-Chun Shen, Batyr Ilyas, Yaqing Bie, Albert Liao, Emre Ergeçen, Bingnan Han, Nannan Mao, Xu Zhang, Xiang Ji, Yuhao Zhang, Jihao Yin, Shengxi Huang, Mildred Dresselhaus, Nuh Gedik, Pablo Jarillo-Herrero, Xi Ling, Jing Kong. Science Advances.
  2. "Two-dimensional MoS2-enabled flexible rectenna for Wi-Fi-band wireless energy harvesting." Xu Zhang, Jesús Grajal, Jose Luis Vazquez-Roy, Ujwal Radhakrishna, Xiaoxue Wang, Winston Chern, Lin Zhou, Yuxuan Lin, Pin-Chun Shen, Xiang Ji, Xi Ling, Ahmad Zubair, Yuhao Zhang, Han Wang, Madan Dubey, Jing Kong, Mildred Dresselhaus, Tomas Palacios. Nature.
  3. "High electrical conductivity and carrier mobility in oCVD PEDOT thin films by engineered crystallization and acid treatment." Xiao Wang, Xu Zhang, Lei Sun, Dongwook Lee, Sunghwan Lee, Minghui Wang, Junjie Zhao, Yang Shao-Horn, Mircea Dincă, Tomás Palacios, K. Karen Gleason. Science Advances.
  4. "MoS2Phase-junction-based Schottky Diodes for RF Electronics." Xu Zhang, Jesús Grajal, Xiaoxue Wang, Ujwal Radhakrishna, Yuhao Zhang, Jing Kong, Mildred S Dresselhaus, Tomás Palacios. 2018 IEEE/MTT-S International Microwave Symposium-IMS.
  5. "Switching performance of quasi‐vertical GaN‐based p‐i‐n diodes on Si." Xu Zhang, Xinbo Zou, Chak Wah Tang, Kei May Lau. physica status solidi (a).
Department of Chemical & Petroleum Engineering
Ph.D. in Electrical Engineering
Summary:

Dr. Ke Xu is currently a tenure-track Assistant Professor in the School of Physics and Astronomy and in Microsystems Engineering at Rochester Institute of Technology. Previously he was a Research Assistant Professor at University of Pittsburgh and Executive Director of the Pittsburgh Quantum Institute (PQI). He received his B.S. in Optical Engineering and Optoelectronics from Zhejiang University in China, and his Ph.D. in Electrical Engineering from University of Illinois at Chicago working with Prof. Michael Stroscio and Prof. Mitra Dutta. His doctoral research focused on graphene- and DNA aptamer-based micro/nano scale electronic devices and their applications in photodetectors and biomolecular sensing. He worked as a post-doctoral researcher with Prof. Susan Fullerton-Shirey at University of Notre Dame on the development of low-voltage and steep subthreshold swing components for beyond-CMOS electronic systems. His current research interests include two-dimensional (2D) materials based nanoelectronic devices, with the focus on understanding ion-electron transport at the molecular level, for application in next-generation energy efficient electronic devices at the limit of scaling for memory, logic, energy storage, neuromorphic computing, and quantum information science. 

Most Cited Publications
  1. "Realizing Large-Scale, Electronic-Grade Two-Dimensional Semiconductors." Yu-Chuan Lin, Bhakti Jariwala, Brian M Bersch, Ke Xu, Yifan Nie, Baoming Wang, Sarah M Eichfeld, Xiaotian Zhang, Tanushree H Choudhury, Yi Pan, Rafik Addou, Christopher M Smyth, Jun Li, Kehao Zhang, M Aman Haque, Stefan Fölsch, Randall M Feenstra, Robert M Wallace, Kyeongjae Cho, Susan K Fullerton-Shirey, Joan M Redwing, Joshua A Robinson. ACS Nano.
  2. "Monolayer Solid-State Electrolyte for Electric Double Layer Gating of Graphene Field-Effect Transistors." Ke Xu, Hao Lu, Erich W Kinder, Alan Seabaugh, Susan K Fullerton-Shirey. ACS Nano.
  3. "Graphene-and aptamer-based electrochemical biosensor." Ke Xu, Xenia Meshik, Barbara M Nichols, Eugene Zakar, Mitra Dutta, Michael A Stroscio. Nanotechnology.
  4. "Tuning the Electronic and Photonic Properties of Monolayer MoS2 via In Situ Rhenium Substitutional Doping." Kehao Zhang, Brian M Bersch, Jaydeep Joshi, Rafik Addou, Christopher R Cormier, Chenxi Zhang, Ke Xu, Natalie C Briggs, Ke Wang, Shruti Subramanian, Kyeongjae Cho, Susan Fullerton‐Shirey, Robert M Wallace, Patrick M Vora, Joshua A Robinson. Advanced Functional Materials.
  5. "Impact of Post‐Lithography Polymer Residue on the Electrical Characteristics of MoS2 and WSe2 Field Effect Transistors." Jierui Liang,# Ke Xu,#,* Blaec Toncini, Brian Bersch, Bhakti Jariwala, Yu‐Chuan Lin, Joshua Robinson, Susan K Fullerton‐Shirey.* Advanced Materials Interfaces.
Recent Publications
  1. "Electric-double-layer-gated transistors based on two-dimensional crystals: recent approaches and advances." Ke Xu and Susan K. Fullerton-Shirey. Journal of Physics: Materials
  2. "Tuning transport across MoS2/graphene interfaces via as-grown lateral heterostructures." Shruti Subramanian, Ke Xu, Yuanxi Wang, Simon Moser, Nicholas A. Simonson, Donna Deng, Vincent H. Crespi, Susan K. Fullerton-Shirey, and Joshua A. Robinson. Nature Partner Journal 2D Materials and Applications.
  3. "Molecularly thin electrolyte for all-solid-state non-volatile two-dimensional crystal memory." Jierui Liang,# Ke Xu,#,* Maokun Wu, Benjamin Matthew Hunt, Wei-Hua Wang, Kyeongjae Cho, Susan K Fullerton-Shirey.* Nano Letters.
  4. "Single-versus Dual-Ion Conductors for Electric Double Layer Gating: Finite Element Modeling and Hall-Effect Measurements." Aaron Woeppel,#,△ Ke Xu,#,* Azimkhan Kozhakhmetov, Shubham Awate, Joshua A. Robinson, and Susan K. Fullerton-Shirey.* ACS Applied Materials & Interfaces
  5. "Electric-field-induced optical hysteresis in single-layer WSe2." Zheng Sun, Jonathan Beaumariage, Ke Xu, Jierui Liang, Shaocong Hou, Stephen R Forrest, Susan K Fullerton-Shirey, David W Snoke. Applied Physics Letters.

#Contributed equally;*Corresponding author;Undergraduate student

Department of Electrical and Computer Engineering, University of Pittsburgh
Ph.D. in Computer Science, Florida State University
Summary:

Dr. George is Department Chair, R&H Mickle Endowed Chair, and Professor of Electrical and Computer Engineering at the University of Pittsburgh. He is Founder and Director of the NSF Center for Space, High-performance, and Resilient Computing (SHREC), a national research center and consortium founded in 2017 and headquartered at Pitt. SHREC features nearly 40 academic, industry, and government partners and is considered by many as the top research center in its field. SHREC was preceded by CHREC, the NSF Center for High-performance Reconfigurable Computing, which operated from 2006-2017 and was rated by NSF as one of its most successful centers. Dr. George's research interests focus upon high-performance architectures, apps, networks, services, systems, and missions for reconfigurable, parallel, distributed, and dependable computing, from satellites to supercomputers.

Professor George is a Fellow of the IEEE for contributions in reconfigurable and high-performance computing. He is lead recipient of the 2012 Alexander Schwarzkopf Prize for Technology Innovation by an NSF Industry-University Cooperative Research Center (IUCRC) for leading the development of Novo-G, the most powerful reconfigurable supercomputer in the world at that time. Professor George has won virtually every award available to a faculty member at a major college or university, including college scholar and teacher of the year, university teacher of the year, college doctoral advisor of the year, college faculty mentor of the year, university service award, and university productivity award.

Dr. George has served as lead principal investigator on research contracts and grants totaling well over $20M, as well as many others as a co-PI. With his students, he has authored over 200 refereed journal and conference papers. Dr. George has served as a member of editorial boards at the IEEE Transactions on Computers, Cluster Computing, and Microprocessors and Microsystems journals. He has served as program chair and co-chair and general chair and co-chair at multiple IEEE conferences and workshops, as conference keynote speaker at RSSI in Urbana-Champaign IL (2007), MRSC in Belfast Ireland (2008), HPRCTA @ SC in Portland OR (2009), MAPLD in San Diego CA (2013), and NAECON in Dayton OH (2016), and on dozens of program committees. Additional service of note includes leading the effort that founded the graduate division and curriculum for computer engineering in ECE, and leading the campus committee on HPC that founded the first supercomputer center in school history (for which he was honored with the University Service Excellence Award), both at the University of Florida, where he served on the faculty from 1997 to 2016.

Professor George holds a Ph.D. in computer science from the Florida State University, an M.S. in electrical and computer engineering from the University of Central Florida, and a B.S. in computer science from UCF. Prior to pursuing a career in academia, he worked as task leader and senior computer engineer for Martin Marietta (now Lockheed Martin) in Orlando, Florida, as computer engineer for General Electric in Daytona Beach, Florida, and as programmer/analyst at the Naval Air Warfare Center Training Systems Division in Orlando, Florida. Dr. George has taught a broad range of courses, including graduate courses in parallel and reconfigurable computing, computer architecture, fault-tolerant computing, high-performance computer networks, and software engineering, and undergraduate courses in computer networks, microprocessor-based system design, embedded systems design, digital logic, senior design, circuit analysis, signal and system analysis, fibre optics, and linear controls.

Most Cited Publications
  1. "Parallel global optimization with the particle swarm algorithm," Schutte, Jaco F., Jeffrey A. Reinbolt, Benjamin J. Fregly, Raphael T. Haftka, and Alan D. George.  International journal for numerical methods in engineering 61, no. 13 (2004): 2296-2315.
  2. "Parallel asynchronous particle swarm optimization," Koh, Byung‐Il, Alan D. George, Raphael T. Haftka, and Benjamin J. Fregly. International journal for numerical methods in engineering 67, no. 4 (2006): 578-595.
  3. "The next frontier for communications networks: power management," Christensen, Kenneth J., Chamara Gunaratne, Bruce Nordman, and Alan D. George. Computer Communications 27, no. 18 (2004): 1758-1770.
  4. "Determination of patient-specific multi-joint kinematic models through two-level optimization," Reinbolt, Jeffrey A., Jaco F. Schutte, Benjamin J. Fregly, Byung Il Koh, Raphael T. Haftka, Alan D. George, and Kim H. Mitchell. Journal of biomechanics 38, no. 3 (2005): 621-626.
  5. "Parallel simulation of chip-multiprocessor architectures," Chidester, Matthew, and Alan George. ACM Transactions on Modeling and Computer Simulation (TOMACS) 12, no. 3 (2002): 176-200.
Recent Publications
  1. "Emulation-Based Performance Studies on the HPSC Space Processor," Schwaller, B., Holtzman, S., George, A.D. (2019) IEEE Aerospace Conference Proceedings, 2019-March, art. no. 8742163, . 
  2. "Comparative Benchmarking Analysis of Next-Generation Space Processors," Gretok, E.W., Kain, E.T., George, A.D. (2019) IEEE Aerospace Conference Proceedings, 2019-March, art. no. 8741914, .
  3. "Resilient networking framework for mission operations and resource sharing in multi-agent systems," Manderino, C., Gillette, A., Gauvin, P., George, A.D. (2018) AIAA/IEEE Digital Avionics Systems Conference - Proceedings, 2018-September, art. no. 8569889, .
  4. "Investigation of Multicore SoCs for On-Board Feature Detection and Segmentation of Images," Ramesh, B., Shea, E., George, A.D. (2018) Proceedings of the IEEE National Aerospace Electronics Conference, NAECON, 2018-July, art. no. 8556637, pp. 375-381.
  5. "Accelerating Real-Time, High-Resolution Depth Upsampling on FPGAs," Langerman, D., Sabogal, S., Ramesh, B., George, A. (2018) IEEE 3rd International Conference on Image Processing, Applications and Systems, IPAS 2018, art. no. 8708867, pp. 37-42.
Department of Electrical and Computer Engineering, Carnegie Mellon University
PhD, Electrical and Computer Engineering, Georgia Institute of Technology, 2013
Summary:

Dr. Qing Li is an Assistant Professor in the ECE department of Carnegie Mellon University. He received his Ph.D. from Georgia Institute of Technology, with his doctoral research focused on developing optical signal processing technologies in both silicon and silicon nitride platforms. He then worked as a CNST/UMD postdoctoral researcher in National Institute of Standards and Technology, where he developed techniques for chip-scale quantum frequency conversion, octave-spanning microresonator frequency combs for optical frequency synthesis, and photonic interfaces for interrogating rubidium atomic systems. His current research interests include the study of nonlinear optical processes and quantum information science using nanophotonics.

The general research interest of the group is to study light and matter interactions that can be realized in an integrated photonics platform. One particular focus is on the nonlinear aspects of such interactions, which is a key enabling factor of many photonic technologies. In addition, it plays an increasingly important role in emerging fields such as quantum information processing and quantum computing. Using advanced nanofabrication and optical designs, the group aims to develop novel photonic materials/devices on the chip scale for classical and quantum information processing.

Most Cited Publications
  1. "An optical-frequency synthesizer using integrated photonics." D.T. Spencer, T. Drake, T. C. Briles, J. Stone, L. C. Sinclair, C. Fredrick, Q. Li, etc. Nature.
  2. "Efficient and low-noise single-photon-level frequency conversion interfaces using silicon nanophotonics." Qing Li, Marcelo Davanco, Kartik Srinivasan. Nature Photonics.
  3. "High resolution on-chip spectroscopy based on miniaturized microdonut resonators." Zhixuan Xia, Ali Asghar Eftekhar, Mohammad Soltani, Babak Momeni, Qing Li, Maysamreza Chamanzar, Siva Yegnanarayanan, Ali Adibi. Optics express.
  4. "Stably accessing octave-spanning microresonator frequency combs in the soliton regime." Qing Li, Travis C Briles, Daron A Westly, Tara E Drake, Jordan R Stone, B Robert Ilic, Scott A Diddams, Scott B Papp, Kartik Srinivasan. Optica (arXiv preprint arXiv:1611.09229).
  5. "Systematic engineering of waveguide-resonator coupling for silicon microring/microdisk/racetrack resonators: theory and experiment." Mohammad Soltani, Siva Yegnanarayanan, Qing Li, Ali Adibi. IEEE Journal of Quantum Electronics.
Recent Publications
  1. "Advanced Technologies for Quantum Photonic Devices Based on Epitaxial Quantum Dots." Tian Ming Zhao, Yan Chen, Ying Yu, Qing Li, Marcelo Davanco, Jin Liu. Advanced Quantum Technologies.
  2. "Broadband resonator-waveguide coupling for efficient extraction of octave-spanning microcombs." Gregory Moille, Qing Li, Travis C Briles, Su-Peng Yu, Tara Drake, Xiyuan Lu, Ashutosh Rao, Daron Westly, Scott B Papp, Kartik Srinivasan. Optics Letters.
  3. "Milliwatt-threshold visible-telecom optical parametric oscillation using silicon nanophotonics." Xiyuan Lu, Gregory Moille, Anshuman Singh, Qing Li, Daron A Westly, Ashutosh Rao, Su-Peng Yu, Travis C Briles, Tara Drake, Scott B Papp, Kartik Srinivasan. arXiv preprint arXiv:1909.07248.
  4. "Chip-Integrated Soliton Microcombs at Cryogenic Temperatures." Gregory Moille, Xiyuan Lu, Qing Li, Ashutosh Rao, Daron Westly, Leonardo Ranzani, Scott B Papp, Mohammad Soltani, Kartik Srinivasan. Frontiers in Optics.
  5. "pyLLE: a Fast and User Friendly Software Package for Microcomb Simulations." Gregory Moille, Qing Li, Xiyuan Lu, Ashutosh Rao, Kartik Srinivasan. Frontiers in Optics.

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