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Jinwoo Hwang

  • Assistant Professor, Materials Science Engineering
  • 1305 Kinnear Rd
    Columbus, OH 43212
  • 614-643-3459

About

Jinwoo Hwang received his Ph.D. from the University of Wisconsin, Madison in 2011. He has been a postdoctoral researcher at the University of California, Santa Barbara for 3 years. His research interests include advanced structural characterization of materials, S/TEM technique development, and computational materials modeling. In particular, he has developed novel S/TEM techniques and simulation methods based on electron nanodiffraction and quantitative imaging, for nanostructured materials, oxide heterostructures, and non-crystalline materials. For his contributions to the field, he has received several honors and awards, including The Albert Crewe award from the Microscopy Society of America in 2014.

Honors

  • 20140801

    The Albert Crewe Award.

  • 20130801

    Postdoctoral Best Paper Award.

  • 20120601-20130601

    Materials Research Laboratory / DOW Travel Fellowhip.

  • 20110801

    Best Poster Award.

  • 20110601

    Wisconsin Alumni Association Academic Achievement Award.

  • 20100901

    Vilas Conference Presentation Fellowship.

  • 20030601-20050601

    Korean National Science and Engineering Foundation Graduate Study Abroad Scholarship.

Books

2012

  • Hwang, J.; Voyles, P.M.. 2012. "Characterization of materials, Chapter "Fluctuation electron microscopy"." Wiley.

Journal Articles

2017

  • Maldonis, J.J.; Hwang, J.; Voyles, P.M., 2017, "FEMSIM+HRMC: Simulation of and structural refinement using fluctuation electron microscopy for amorphous materials." Computer Physics Communications 213, 217-217 - 217-217.
  • Kim, Y.; Cruz, S.S.; Lee, K.; Alawode, B.O. et al., 2017, "Remote epitaxy through graphene enables two-dimensional material-based layer transfer." Nature 544, no. 7650, 340-343 - 340-343.
  • Calderon Ortiz, G.; Zhu, M.; Hwang, J., 2017, "Determining Nanoscale Molecular Ordering in Semiconducting Polymers." Microscopy and Microanalysis 23, no. S1, 1780-1781 - 1780-1781.
  • Johnson, J.M.; Hwang, J., 2017, "Imaging of individual vacancies using electron channeling contrast in STEM." Microscopy and Microanalysis 23, no. S1, 446-446 - 446-446.
  • Presley, K.; Hwang, J.; Cheong, S.; Tilley, R. et al., 2017, "Nanoscale upconversion for oxygen sensing.." Mater Sci Eng C Mater Biol Appl 70, 76-84 - 76-84.
  • Gruenewald, J.H.; Kim, J.; Kim, H.S.; Johnson, J.M. et al., 2017, "Engineering 1D quantum stripes from superlattices of 2D layered materials.." Advanced Materials 29, 1603798-1603798 - 1603798-1603798.
  • Lee, C.H.; Krishnamoorthy, S.; O'Hara, D.J.; Brenner, M.R. et al., 2017, "Molecular beam epitaxy of 2D-layered gallium selenide on GaN substrates." Journal of Applied Physics 121, no. 9, 094302-094302 - 094302-094302.
  • Zhang, Y.; Krishnamoorthy, S.; Akyol, F.; Johnson, J.M. et al., 2017, "Reflective metal/semiconductor tunnel junctions for hole injection in AlGaN UV LEDs." Applied Physics Letters 111, no. 5, 051104-051104 - 051104-051104.
  • Johnson, J.M.; Im, S.; Windl, W.; Hwang, J., 2017, "Three-dimensional imaging of individual point defects using selective detection angles in annular dark field scanning transmission electron microscopy.." Ultramicroscopy 172, 17-29 - 17-29.
  • Krishnamoorthy, S.; Xia, Z.; Joishi, C.; Zhang, Y. et al., 2017, "Modulation-doped Ī²āˆ’(Al0.2Ga0.8)2O3/Ga2O3 field-effect transistor." Applied Physics Letters 111, 023502-023502 - 023502-023502.
  • Zhao, P.; Li, J.; Hwang, J.; Wang, Y., 2017, "Influence of nanoscale structural heterogeneity on shear banding in metallic glasses." Acta Materialia 134, 104-104 - 104-104.

2016

  • Bhallamudi, V.P.; Xue, R.; Purser, C.M.; Presley, K.F. et al., 2016, "Nanofiber-based paramagnetic probes for rapid, real-time biomedical oximetry." Biomedical Microdevices 18, no. 2, 1-1 - 1-1.
  • Seo, S.S.A.; Nichols, J.; Hwang, J.; Terzic, J. et al., 2016, "Selective growth of epitaxial Sr2IrO4 by controlling plume dimensions in pulsed laser deposition." Applied Physics Letters 109, 201901-201901 - 201901-201901.
  • Thompson, J.; Nichols, J.; Lee, S.; Ryee, S. et al., 2016, "Enhanced metallic properties of SrRuO3 thin films via kinetically controlled pulsed laser epitaxy." Applied Physics Letters 109, 161902-161902 - 161902-161902.
  • Wang, Y.; Seewald, L.; Sun, Y-Y.; Keblinski, P. et al., 2016, "Nonlinear electron-lattice interactions in a wurtzite semiconductor enabled via strongly correlated oxide.." Advanced Materials 28, no. 40, 8975-8982 - 8975-8982.
  • Im, S.; Johnson, J.; Hwang, J., 2016, "Effect of probe channeling on differential phase contrast at the atomic scale." Microscopy and Microanalysis 22, no. S3, 934-935 - 934-935.
  • Johnson, J.M.; Lee, C.H.; Rajan, S.; McCulloch, W. et al., 2016, "Exploring thermal properties of MoS2 using in situ quantitative STEM." Microscopy and Microanalysis 22, no. S3, 912-913 - 912-913.
  • Akyol, F.; Krishnamoorthy, S.; Zhang, Y.; Johnson, J. et al., 2016, "Low-resistance GaN tunnel homojunctions with 150 kA/cm(2) current and repeatable negative differential resistance." Applied Physics Letters 109, no. 10, 256-256 - 256-256.
  • Zhao, P.; Im, S.; Hwang, J.; Wang, Y., 2016, "New insights into deformation of metallic glasses by combining mesoscale simulation and fluctuation electron microscopy." Microscopy and Microanalysis 22, no. S3, 1436-1437 - 1436-1437.
  • Krishnamoorthy, S.; Lee, E.W.; Lee, C.H.; Zhang, Y. et al., 2016, "High current density 2D/3D MoS2/GaN Esaki tunnel diodes." Applied Physics Letters 109, no. 18, 183505-183505 - 183505-183505.

2015

  • Johnson, J.M.; Thompson, J.; Seo, S.S.A.; Hwang, J., 2015, "Identifying atomic reconstruction at complex oxide interfaces using quantitative STEM." Microscopy and Microanalysis 21, no. S3, 1237-1238 - 1237-1238.
  • Hauser, A.J.; Mikheev, E.; Moreno, N.E.; Hwang, J. et al., 2015, "Correlation between stoichiometry, strain, and metal-insulator transitions of NdNiO3 films." Applied Physics Letters 106, no. 9, 092104-092104 - 092104-092104.
  • Zhang, J.Y.; Hwang, J.; Isaac, B.J.; Stemmer, S., 2015, "Variable-angle high-angle annular dark-field imaging: application to three-dimensional dopant atom profiling.." Scientific Reports 5, 12419-12419 - 12419-12419.
  • Hwang, J., 2015, "Three-dimensional imaging of point defects in functional materials using quantitative STEM." Microscopy and Microanalysis 21, no. S3, 1233-1234 - 1233-1234.
  • Zhang, Y.; Krishnamoorthy, S.; Johnson, J.M.; Akyol, F. et al., 2015, "Interband tunneling for hole injection in III-nitride ultraviolet emitters." Applied Physics Letters 106, no. 14, 141103-141103 - 141103-141103.
  • Mikheev, E.; Hwang, J.; Kajdos, A.P.; Hauser, A.J. et al., 2015, "Tailoring resistive switching in Pt/SrTiO3 junctions by stoichiometry control." Scientific Reports 5, 11079-11079 - 11079-11079.
  • Lee, C.H.; McCulloch, W.; Lee, E.W.; Ma, L. et al., 2015, "Transferred large area single crystal MoS2 field effect transistors." Applied Physics Letters 107, no. 19, 193503-193503 - 193503-193503.

2014

  • Thompson, J.; Hwang, J.; Nichols, J.; Connell, J.G. et al., 2014, "Alleviating polarity-conflict at the heterointerfaces of KTaO3/GdScO3 polar complex-oxides." Applied Physics Letters 105, 102901-102901 - 102901-102901.
  • Hwang, J.; Zhang, J.Y.; Dā€™ Alfonso, A.J.; Allen, L.J. et al., 2014, "Three-dimensional observation of dopant atoms in quantitative scanning transmission electron microscopy." Microscopy and Microanalysis 20, no. S3, 52-53 - 52-53.
  • Hwang, J.; Zhang, J.Y.; Stemmer, S., 2014, "Progress in applications of quantitative STEM." Microscopy and Microanalysis 20, no. S3, 58-59 - 58-59.

2013

  • Hauser, A.J.; Mikheev, E.; Moreno, N.; Cain, T.A. et al., 2013, "Temperature-dependence of the Hall coefficient of NdNiO3 thin films." Applied Physics Letters 103, no. 18, 182105-182105 - 182105-182105.
  • Schweiss, D.T.; Hwang, J.; Voyles, P.M., 2013, "Inelastic and elastic mean free paths from FIB samples of metallic glasses." Ultramicroscopy 124, 6-6 - 6-6.
  • Hwang, J.; Zhang, J.Y.; D'Alfonso, A.; Allen, L.J. et al., 2013, "Three-dimensional imaging of individual dopant atoms in SrTiO3." Physical Review Letters 111, no. 26, 266101-266101 - 266101-266101.
  • Hwang, J.; Son, J.; Zhang, J.Y.; Janotti, A. et al., 2013, "Structural origins of the properties of rare earth nickelate superlattices." Physical Review B 87, no. 6, 060101-060101 - 060101-060101.
  • Zhang, J.Y.; Hwang, J.; Raghavan, S.; Stemmer, S., 2013, "Symmetry lowering in extreme-electron-density perovskite quantum wells." Physical Review Letters 110, no. 25, 256401-256401 - 256401-256401.
  • Zhang, J.Y.; Jackson, C.A.; Raghavan, S.; Hwang, J. et al., 2013, "Magnetism and local structure in low-dimensional Mott insulating GdTiO3." Physical Review B 88, no. 12, 121104-121104 - 121104-121104.

2012

  • Hwang, J.; Zhang, J.Y.; Son, J.; Stemmer, S., 2012, "Nanoscale quantification of octahedral tilts in perovskite films." Applied Physics Letters 100, no. 19, 191909-191909 - 191909-191909.
  • Hwang, J.; Melgarejo, Z.H.; Kalay, Y.E.; Kalay, I. et al., 2012, "Nanoscale structure and structural relaxation in Zr50Cu45Al5 bulk metallic glass." Physical Review Letters 108, no. 19, 195505-195505 - 195505-195505.
  • Moetakef, P.; Jackson, C.A.; Hwang, J.; Balents, L. et al., 2012, "Toward an artificial Mott insulator: Correlations in confined high-density electron liquids in SrTiO3." Physical Review B 86, no. 20, 201102-201102 - 201102-201102.
  • Kalay, Y.E.; Kalay, I.; Hwang, J.; Voyles, P.M. et al., 2012, "Local chemical and topological order in Al-Tb and its role in controlling nanocrystal formation." Acta Materialia 60, no. 3, 994-994 - 994-994.

2011

  • Hwang, J.; Voyles, P.M., 2011, "Variable resolution fluctuation electron microscopy on Cu-Zr metallic glass using a wide range of coherent STEM probe size." MICROSCOPY AND MICROANALYSIS 17, no. 1, 67-67 - 67-67.

2010

  • Yi, F.; Hwang, J.; Imhoff, S.; Perepezko, J. et al., 2010, "STEM fluctuation microscopy characterization of an amorphous ā€“ protocrystalline metal glass nanocomposite." Microscopy and Microanalysis 16, no. S2, 1644-1645 - 1644-1645.

2009

  • Hwang, J.; Clausen, A.M.; Cao, H.; Voyles, P.M., 2009, "Reverse Monte Carlo structural model for a zirconium-based metallic glass incorporating fluctuation microscopy medium-range order data." Journal of Materials Research 24, no. 10, 3121-3121 - 3121-3121.

Presentations

  • "Nanometer-scale structural relaxation in Zr-based bulk metallic glass." 2007, Presented at Materials Research Society Fall Meeting,
  • "Short to medium range order in Zr-based bulk metallic glass by Reverse Monte Carlo simulation." 2008, Presented at Materials Research Society Fall Meeting,
  • "Nanometer scale atomic order in a bulk metallic glass from fluctuation microscopy." 2009, Presented at Microscopy and Microanalysis,
  • "Angular correlations in coherent electron nanodiffraction of a metallic glass." 2011, Presented at Microscopy and Microanalysis,
  • "Nano-scale characterization of materials using quantitative electron diffraction in scanning transmission electron microscopy." 2013, Presented at Southern California Society for Microscopy and Microanalysis Spring Meeting,
  • "Three-dimensional imaging of individual dopant atoms in SrTiO3 using quantitative scanning transmission electron microscopy." 2014, Presented at Microscopy and Microanalysis,
  • "Coherent electron nanodiffraction fluctuation microscopy measurements of nanometer-scale structure in amorphous materials." 2011, Presented at Materials Research Society Spring Meeting,
  • "Quantification of epitaxial strain and crystal structure in nanoscale oxide films using position averaged convergent beam electron diffraction." 2013, Presented at Microscopy and Microanalysis,
  • "Computational structure refinement by hybrid reverse Monte Carlo simulation incorporating fluctuation electron microscopy." 2013, Presented at Microscopy and Microanalysis,
  • "Quantifying octahedral tilts in perovskite films at the nanoscale." 2014, Presented at Pacific Rim Conference on Ceramic and Glass Technology,
  • "Reverse Monte Carlo simulation of medium-range atomic order in bulk metallic glass incorporating fluctuation electron microscopy." 2010, Presented at TMS,
  • "Nanoscale characterization of octahedral tilts in LaNiO3 heterostructures using position averaged convergent beam electron diffraction." 2012, Presented at Materials Research Society Fall Meeting,
  • "Nanometer scale atomic structure of Zr-based bulk metallic glass." 2010, Presented at Argonne National Laboratory Postdoctoral Research Symposium,
  • "Nanometer scale structural fluctuation in Zr-based bulk metallic glass." 2010, Presented at Materials Research Society Fall Meeting,
  • "Quantifying octahedral rotations in ultrathin LaNiO3 films using position averaged convergent beam electron diffraction." 2012, Presented at Microscopy and Microanalysis,
  • "Using aqueous and non-aqueous solvents as a delivery system for the encapsulation of molecules within Single-wall carbon nanotubes." 2005, Presented at Southern California Society for Microscopy and Microanalysis Spring Meeting,
  • "Using aqueous and non-aqueous solvents as a delivery system for the encapsulation of molecules within Single-wall carbon nanotubes." 2005, Presented at Materials Research Society Spring Meeting,

Papers in Proceedings

2013

  • Hwang, J.; Melgarejo, Z.H.; Kalay, Y.E.; Kramer, M.J. et al. "Computational structure refinement by hybrid reverse Monte Carlo simulation incorporating fluctuation electron microscopy." in Microscopy and Microanalysis. (8 2013).
  • Hwang, J.; Zhang, J.Y.; Son, J.; Mikheev, E. et al. "Quantification of epitaxial strain and crystal structure in nanoscale oxide films using position averaged convergent beam electron diffraction." in Microscopy and Microanalysis. (8 2013).
  • Melgarejo, Z.H.; Jakes, J.E.; Hwang, J.; Kalay, Y.E. et al. "Variation of hardness and modulus across the thickness of Zr-Cu-Al metallic glass ribbons." in Materials Research Society Fall Meeting. (3 2013).

2012

  • Hwang, J.; Zhang, J.Y.; Son, J.; Stemmer, S. "Quantifying octahedral rotations in ultrathin LaNiO3 films using position averaged convergent beam electron diffraction." in Microscopy and Microanalysis. (8 2012).

2011

  • Hwang, J.; Kalay, Y.E.; Kramer, M.J.; Voyles, P.M. "Angular correlations in coherent electron nanodiffraction of a metallic glass." in Microscopy and Microanalysis. (8 2011).

2010

  • Yi, F.; Hwang, J.; Imhoff, S.; Perepezko, J. et al. "STEM fluctuation microscopy characterization of an amorphous-protocrystalline metal glass nanocomposite." (8 2010).

2009

  • Hwang, J.; Voyles, P.M. "Nanometer scale atomic order in a bulk metallic glass from fluctuation microscopy." (7 2009).

2008

  • Hwang, J.; Cao, H.; Voyles, P.M. "Nanometer-scale structural relaxation in Zr-based bulk metallic glass." (3 2008).
  • Parra-Palomino, A.; Perales-Perez, O.; Singhal, R.; Tomar, M. et al. "Structural, optical, and magnetic characterization of monodisperse Fe-doped ZnO nanocrystals." (4 2008).

Unknown

  • Hwang, J.; Zhang, J.Y.; D'Alfonso, J.Y.; Allen, L.J. et al. "Three-dimensional imaging of individual dopant atoms in SrTiO3 using quantitative scanning transmission electron microscopy." in Microscopy and Microanalysis.