Changwoo Do
Instrument Scientist: EQ-SANS
Education
2003-2009 Ph.D. Nuclear and Quantum Engineering, KAIST, Daejeon, South Korea
1999-2002 M.Sc. Physics, MIT, Cambridge, USA
1996-1999 B.Sc. Physics, KAIST, Daejeon, South Korea
Positions
2011-Present Instrument Scientist, EQ-SANS, Biology and Soft Matter Division, Oak Ridge National Laboratory, Oak Ridge, USA.
Investigation of ion transportations in polyelectrolyte solutions and Li+ solid polymer electrolyte batteries using neutron scattering techniques. Fabrication of self-assembled structures of opto-electric polymers and their structural investigation using small angle neutron/x-ray scatterings (SANS/SAXS)
2010-2011 Instrument Scientist, Neutron Spin-Echo, JCNS-SNS, Forschungszentrum Juelich, Juelich, Germany
Investigation of the dynamics of polymer chains in Li ion batteries and block copolymer ternary systems using neutron spin echo (NSE) and small angle neutron scattering (SANS) techniques
2009-2010 Postdoctoral fellow, Nuclear and Quantum Engineering, KAIST, South Korea. Advisor: Prof. Sung-Min Choi
Small angle neutron/x-ray scattering study of interactions between functionalized carbon nanotubes in water using hydration layer model. Study of self-assembling behavior of single wall carbon nanotubes with various polymeric systems.
Awards
2010 Research Grant Award, National Research Foundation of Korea2007 Best poster award in 7th Japan-Korea Meeting on Neutron Science
2004 Nuclear and Quantum Engineering Department Fellowship
Presentations and Talks
“Integral equation theory for star and linear polyelectrolyte solutions” Changwoo Do, Gregory Smith, Wei-Ren Chen, Chwen-Yang Shew, Kunlun Hong, Yun Liu, Lionel Porcar, ACNS 2012, Washington DC, June 25, 2012 (talk)
“Understanding Li+ Transportation in Solid Polyelectrolytes.” Changwoo Do (PI), Diddo Diddens, Peter Lunkenheimer, Michael Ohl, Xiao-Guang Sun, Jürgen Allgaier, Marion Götz, Alois Loidl, Dieter Richter, ACNS 2012, Washington DC, June 25, 2012 (poster)
“Influence of LiTFSI on the Dynamics of PEO Investigated by Neutron Scatterings at SNS.” C. Do et al. Gordon Research Conference, Ventura, February 5, 2012 (poster)
“Contrast Varied SANS Investigation of Sub-domain Structures of Lamellar and Reverse Hexagonal Pluronic Ternary Systems.” C. Doe, H.-S. Jang, S.R. Kline, S.-M. Choi. HANARO Symposium 2010, Nov. 1-2, 2010, Daejeon Convention Center, Daejeon, Republic of Korea (poster)
“Contrast Varied SANS Investigation of Single-Walled Carbon Nanotubes in a Polymeric Lamellar System.” C. Doe, H.-S. Jang, S.R. Kline, S.-M. Choi. HANARO Symposium 2010, Nov. 1-2, 2010, Daejeon Convention Center, Daejeon, Republic of Korea (poster)
“Fabrication of highly ordered SWNT superstructures in a polymeric system.” C. Doe, H.-S. Jang, T.-H. Kim, S.R. Kline, and S.-M. Choi. The 10th Conference of the Asian Crystallographic Association (AsCA 2010), Oct. 31 - Nov. 3, 2010, BEXCO, Busan, Republic of Korea (poster)
“Thermoreversible Highly Ordered SWNT Superstructures in a Polymeric System.” C. Doe, H.-S. Jang, T.-H. Kim, S.R. Kline, S.-M. Choi, 11th International Conference on the Science and Application of Nanotubes (NT10), Jun. 27 - Jul. 2, 2010, Hilton Bonaventure, Montreal, Canada (poster)
“Functionalized Single-Walled Carbon Nanotubes with Pluronic Polymer and Their Self-Assembled Phase Behavior.” H.-S. Jang, C. Doe, T.-H. Kim, S.-M. Choi, The Polymer Society of Korea - 2010 Spring, Daejeon Convention Center, Daejeon, Korea, April 8-9, 2010 (poster)
“Highly Ordered Self Assembly of 1D Nanoparticles in Soft Matter.” S.-M. Choi, C. Doe, T.-H. Kim, H.- S. Jang, J. Yu, J.-B. Sim, J. Kim, and S. R. Kline, The 21st Synchrotron Radiation user's Workshop & KOSUA Meeting, POSCO, Pohang, Korea, November 20, 2009 (invited talk)
“Pluronic ternary systems as potential templates for single wall carbon nanotube superstructures.” C. Doe, H.-S. Jang, S. R. Kline, and S.-M. Choi, The Polymer Society of Korea - 2009 Spring, Daejeon, Korea, April 9-10, 2009 (poster)
“Water-redispersible single wall carbon nanotubes for the development of self-assembled SWNT superstructures in polymeric systems.” C. Doe, T.-H. Kim, H.-S. Jang, S. R. Kline, and S.-M. Choi. The 9th Japan-Korea Meeting on Neutron Science, Busan, Korea, February 9-10, 2009 (poster)
“Monte Carlo Simulation for Small Angle Neutron and X-ray Scattering Intensities of Nanoparticles with Arbitrary Shape.” J.-H. Yoo*, T.-H. Kim, C. Doe, and S.-M. Choi, The 9th Japan-Korea Meeting on Neutron Science, Busan, Korea, February 9-10, 2009 (poster)
“Water- and Organic Solvent-Redispersible Isolated Single Wall Carbon Nanotubes Fabricated by in-situ Polymerization of Micelles.” T.-H. Kim, C. Doe, S. R. Kline, and S.-M. Choi. IUMRS-ICA2008, Nagoya, Japan, December 9-13, 2008 (poster)
“Structure and Dynamics of Lipid Membranes Interacting with Peptides.” J.-H. Lee, C. Doe, S.-M. Choi, A. Faraone, P. A. Pincus, and S. R. Kline. 2008 International Workshop on Current Problems in Soft Condensed Matter, KAIST, Daejeon, South Korea, September 8-11, 2008 (poster)
“Water-redispersible single wall carbon nanotubes for the development of self-assembled SWNT superstructures in polymeric systems.” C. Doe, T.H. Kim, H.S. Jang, S.R. Kline, and S.M. Choi. The 6th workshop on X-ray and neutron scattering techniques for surface nano-characterization, Pohang, South Korea, Dec 11-12, 2008 (talk)
“Self Assembly of Single Wall Carbon Nanotubes in Polymeric Systems.” C. Doe, H.S. Jang, S.R. Kline, and S.M. Choi. International Workshop on Current Problems in Soft Condensed Matters, Daejeon, South Korea, Sep 8-11, 2008 (poster)
“Monte Carlo Simulation of Small-Angle Neutron Scattering (SANS) Intensities for Nanoparticles with Arbitrary Shape.” J. Yoo, C. Doe, and S.M. Choi. HANARO Symposium, Daejeon, South Korea, May 9, 2008 (poster)
“Small Angle Neutron Scattering Study of Isolated Single Wall Carbon Nanotubes in Water.” C. Doe, T.H. Kim, S.M. Choi. Korean Nuclear Society Meeting, Jeju, South Korea, May. 10-11, 2007 (talk)
“Low Temperature Magnetic Phases of Ca3Co2O6.” C. Doe, S.M. Choi, K. Hong, S. Park, T.J. Sato, C.H. Kim, B. Kim, and B.G. Kim. The 7th Japan-Korea Meeting on Neutron Science, Seoul, South Korea, Feb. 21-23, 2007 (Best Poster Award)
“Low Temperature Magnetic Phases of Ca3Co2O6.” S. Park, K. Hong, C. Doe, S.M. Choi, T.J. Sato, C.H. Kim, B. Kim, and B.G. Kim. Korean Physics Society Meeting, Daegu, South Korea, Oct. 19~20, 2006 (poster)
“Adsorptions of CTVB on carbon nanotubes surfaces.” C. Doe, T.H. Kim, S.R. Kline, and S.M. Choi ICNS (International Conference on Neutron Scattering), Sydney, Australia, Nov 27~Dec 2, 2005 (poster)
“Neutron Spin Phase Study Using Spin-Echo Instrument at HANARO.” C. Doe, D.C. Woo, S.M. Choi, M.K. Moon, and C.H. Lee Korean Physics Society Meeting, Suwon, South Korea, Apr 23~24, 2004 (poster)
“Efficiency Measurement of Spin Flippers Developed at HANARO.” C. Doe, H.S. Jang, S.M. Choi, M.K. Moon, C.H. Lee HANARO 2005 (International Symposium on Research Reactor and Neutron Science), Daejeon, South Korea, Apr. 11~13, 2005 (poster)
“Development of Neutron Spin-Echo Instrument at HANARO.” C. Doe, D.C. Woo, S.M. Choi, M.K. Moon, C.H. Lee The 4th Korea-Japan Meeting on Neutron Science, Tsukuba, Japan, Feb. 23~24, 2004 (poster)
Published Papers
C. Do, H.-S. Jang, S.-M. Choi, “Interaction force measurement between surfactant coated single-walled carbon nanotubes.” submitted, 2012
B. Wu, W.-R. Chen, T. Egami, X. Li, Y. Liu, Y. Wang, C. Do, L. Porcar, K. Hong, L. Liu, G. Smith, S. Smith, “Molecular dynamics and neutron scattering study of the dependence of polyelectrolyte dendrimer conformation on counterion behavior.” submitted, 2012
T.-H. Kim, C. Do, S.-H. Kang, M.-J. Lee, S.-H. Lim, S.-M. Choi, “Highly Ordered Superstructures of Single Wall Carbon Nanotube-Liposome Complexes.” submitted, 2012
C.-Y Shew, C. Do, K. Hong, Y. Liu, L. Porcar, G. Smith, W.-R. Chen, “Conformational effect on small angle neutron scattering behavior of interacting polyelectrolyte solutions: a perspective of integral equation theory.” J. Chem. Phys., 2012 (accepted)
B. Wu, B. Kerkeni, T. Egami, C. Do, Y. liu, Y. Wang, L. Porcar, K. Hong, S. Smith, E. Liu, G. Smith, W.-R. Chen, “Structured water in polyelectrolyte dendrimers: Understanding small angle neutron scattering results through atomistic simulation.” J. Chem. Phys. 136, 144901, 2012
H.-S. Jang, C. Do, T.-H. Kim, and S.-M. Choi, “Single-Walled Carbon Nanotube-Induced Lyotropic Phase Behavior of a Polymeric System.” Mcromolecules 45, 986-992, 2012
B. Wu, X. Li, C. Do, T. Kim, C. Shew, Y. Liu, J. Yang, K. Hong, L. Porcar, C. Chen, L. Liu, G. Smith, K. Herwig, and W.-R. Chen, “Spatial distribution of intra-molecular water and polymeric components in polyelectrolyte dendrimers revealed by small angle scattering investigations.” J. Chem. Phys. 135, 144903, 2011
J.-H Lee, S.-M Choi, C. Doe, A. Faraone, P.A. Pincus, and S.R. Kline, “Thermal Fluctuation and Elasticity of Lipid Vesicles Interacting with Pore-Forming Peptides.” Phys. Rev. Lett., 102, 038101, 2010
C. Doe, H.-S. Jang, S.R. Kline, and S.-M. Choi, “SANS Investigation of Selectively Distributed Single- Walled Carbon Nanotubes in a Polymeric Lamellar Phase.” Macromolecules, 43, 5411-5416, 2010
C. Doe, H.S. Jang, T.H. Kim, S.R. Kline, and S.-M. Choi, “Thermally Switchable One- and Two- Dimensional Arrays of Single-Walled Carbon Nanotubes in a Polymeric System.” J. Am. Chem. Soc., 131, 16568-16572, 2009
T.H. Kim, S.H. Kang, C. Doe, J. Yu, J.B. Sim, J. Kim, S. R. Kline and S.-M. Choi, “Highly Ordered Self- Assembly of 1D Nanoparticles in Phospholipids Driven by Curvature and Electrostatic Interaction.” J. Am. Chem. Soc., 131 (21), 7456–7460, 2009
C. Doe, H.S. Jang, S.R. Kline, and S.-M. Choi, “Sub-domain structures of lamellar and reverse hexagonal Pluronic ternary systems investigated by small angle neutron scattering.” Macromolecules, 42, 2645- 2650, 2009
C. Doe, S.-M. Choi, S. R. Kline, H.S. Jang, and T.H. Kim, “Charged Rod-like Nanoparticle Assisted Single Wall Carbon Nanotube Dispersion in Water.” Adv. Func. Mater., 18, 2685-2691, 2008
T.H. Kim, C. Doe, S.R. Kline, and S.-M. Choi, “Organic Solvent-Redispersible Isolated Single Wall Carbon Nanotubes Coated by In-situ Polymerized Surfactant Monolayer.” Macromolecules, 41, 3261- 3266, 2008
T.H. Kim*, C. Doe* (*equal contribution), S.R. Kline, and S.-M. Choi, “Water-Redispersible Isolated Single-Walled Carbon Nanotubes Fabricated by In Situ Polymerization of Micelles.” Adv. Mater., 19, 929–933, 2007
D.A. Pushin, M. Arif, D.L. Jacobson, C. Doe and D.G. Cory, “Reciprocal space neutron imaging.” Physica B: Condensed Matter, 385-386, 1402-1404, 2006
C. Doe, D.C. Woo, S.-M. Choi, M.K. Moon, and C.H. Lee, “First Neutron Spin-Echo Measurement at HANARO.” J. Kor. Phys. Soc., 46, 1075-1079, 2005
Books & Chapters
S.-M. Choi, C. Doe, and Y.S. Han, “Small Angle Neutron Scattering Studies of Soft Nanomaterials.” Physics and High Technology, 18, 24-29, 2009
S.-M. Choi, C. Doe, H.-S. Jang, T.-H. et al., Annual Reports of Basic Atomic Energy Research Institute, 2006-2009
Patents
"Single wall carbon nanotubes with surfactant-coated surface and process for preparing the same." Korea Patent No. 10-0874219, Changwoo Do, Tae-Hwan Kim, Sung-Min Choi. (2008)
"Fabrication of thermally switchable and ordered single wall carbon nanotube arrays using a polymeric system." Korea Patent App. No. 10-2010-0035496, Changwoo Do, Hyung-Sik Jang, Sung-Min Choi. (2008)
