Changwoo Do


Beam line: BL-6 EQ-SANS

Position: Instrument Scientist

Instrument: Extended Q-Range Small-Angle Neutron Scattering Diffractometer

Group: Structure and Dynamics of Soft Matter

Facility: Spallation Neutron Source


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

Selected Publications

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

Awards, Honors and Memberships

2010 Research Grant Award, National Research Foundation of Korea
2007 Best poster award in 7th Japan-Korea Meeting on Neutron Science
2004 Nuclear and Quantum Engineering Department Fellowship


"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)