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Jiwoong Park

Associate Professor

PHYSICAL SCIENCES BUILDING, Room 297
jpark@cornell.edu
607-254-3339

Educational Background

PhD, University of California at Berkeley, 2003
BS, Seoul National University, South Korea, 1996

Website(s)

Overview

Prof. Park studies the science and application of molecule-like nanostructures, including carbon nanotubes and graphene. His group combines novel materials synthesis with state-of-the-art characterization methods in order to fully control the chemical and physical properties of nanoscale materials. PhD - UC Berkeley (2003), BS - Seoul Nat'l Univ (1996)

Keywords

Synthesis and characterization of carbon nanostructures, nanomaterials-based technology

Departments/Programs

  • Chemistry and Chemical Biology

Graduate Fields

  • Applied Physics
  • Chemistry and Chemical Biology

Research

As the silicon based devices approach their fundamental size limits, the world is turning to nanoscale science to continue the modern electronics evolution. One of the most impressive results of this effort is the development of devices based on nanoscale materials, which often exhibit excellent characteristics that are comparable, and in some cases even superior, to the properties of traditional semiconductors.

Our group's main research interest is to explore fundamental physics and chemistry in the nanometer scale by investigating electrical, optical and thermal properties of individual nanostructures, including single molecules, nanocrystals, nanowires, carbon nanotubes, and their arrays. In particular, we are most interested in studying how fundamental physical quanta ? electrons, photons and phonons are coupled to each other in the nanometer scale and how we can apply this knowledge for future technological advances.

This research field is multidisciplinary in nature; exploring physical properties of individual structures involves addressing key scientific issues regarding: 1) smarter materials synthesis and device design, 2) advanced nanoscale characterization of electrical and optical properties, and 3) rational strategy for integration with the external measurements setup. The mastery of these issues is essential not only to create novel electronic and optical devices, but it also has the potential to impact other major disciplines including materials science, physical sciences, electrical engineering and bioengineering.

Courses

Publications

• K. F. Mak, K. L. McGill, J. Park and P. L. McEuen, "The valley Hall effect in MoS2 transistors," Science 344, 1489-1492 (2014).

• M. W. Graham, S. Shi, D. C. Ralph, J. Park and P. L. McEuen, "Photocurrent Measurements of Supercollision Cooling in Graphene," Nature Physics 9, 103-108 (2013).

• M. P. Levendorf, C.-J. Kim, L. Brown, P. Y. Huang, R. W. Havener, D. A. Muller, and J. Park, "Graphene and Boron Nitride Lateral Heterostructures for Atomically Thin Circuitry," Nature 488, 627-632 (2012).

• A. W. Tsen, L. Brown, M. P. Levendorf, F. Ghahari, P. Y. Huang, C. S. Ruiz-Vargas, R. W. Havener, D. A. Muller, P. Kim, and J. Park, "Tailoring Electrical Transport across Grain Boundaries in Polycrystalline Graphene," Science 336, 1143-1146 (2012).

• J. W. Colson, A. R. Woll, A. Mukherjee, M. P. Levendorf, E. L. Spitler, V. B. Shields, M. G. Spencer, J. Park, and W. R. Dichtel, "Oriented 2D Covalent Organic Framework Thin Films on Single Layer Graphene," Science 332, 228-231 (2011).

• P. Y. Huang, C. S. Ruiz-Vargas, A. M. van der Zande, W. S. Whitney,  M. P. Levendorf, J. W. Kevek, S. Garg, J. S. Alden, C. J. Hustedt, Y. Zhu, J. Park, P. L. McEuen, D. A. Muller, “Grains and Grain Boundaries in Single-Layer Graphene Atomic Patchwork Quilts,” Nature 469, 389-392 (2011).

• D. Y. Joh, J. Kinder, L. H. Herman, S.-Y. Ju, M. A. Segal, J. N. Johnson, G. K. L. Chan, J. Park, “Single walled carbon nanotubes as excitonic optical wires”, Nature Nanotechnology 6, 51-56 (2011).

• D. Y. Joh, L. H. Herman, S.-Y. Ju, J. Kinder, M. A. Segal, J. N. Johnson, G. K. L. Chan, J. Park, “On-chip Rayleigh imaging and spectroscopy of carbon nanotubes”, Nano Letters 11, 1-7. (2011cover article)