Official site of Sehun Chun (천세훈)

Assistant Professor of Applied Mathematics,
Director, the Heart Modeling Center (HMC), 
Integrated Science and Engineering Division (ISED) ,
85 Songdogwahak-ro, Yonsu-gu,
Incheon, 21983, South Korea

Also, Associate Research Fellow at AIMS-South Africa

OFFICE: #413 at Veritas Hall B, (HMC at #322 Veritas B)
PHONE: +82 (0)32 749 3607
Find me at Facebook, ResearchGate, and Mendeley.

•  Education :

  • Brown University , Ph.D. in Applied Mathematics, Providence, US, May 2008 
  • Brown University, M.S. in Applied Mathematics, Providence, US, May 2005.
  • Purdue University, M.S. in Mathematics, West Lafayette, US, May 2003.
  • Seoul National University, B.S. in Mech. & Aero Engineering, Seoul, South Korea, Feb 1999.

• Work experience :

  • Assistant Professor of Applied Mathematics, UIC, Yonsei University, Incheon, South Korea, 2016 - present
  • Residential Researcher, African Institute for Mathematical Sciences, Cape Town, South Africa, 2012 - 2015
  • Research Associate, Imperial College London, London, UK, 2009 - 2011
  • Visiting Research Fellow, Carnegie Mellon University, Pittsburgh, US, 2008
  • Research Assistant, Brown University, Providence, US, 2004-2008
  • Teaching Assistant, Brown University, Providence, US, 2007
  • Teaching Assistant, Purdue University,  West Lafayette, US, 2001-2002
Research Interests:

Keywords: Electrodynamics, Bioelectricity, Cardiac electrophysiology, Moving Frames, Curved Surfaces.

My research interest lies in the interdisciplinary area of electromagnetics, differential geometry, and scientific computing with applications to real physical and biological electromagnetic phenomena such as global electric climate mode, metamaterial optics, and especially cardiac electrophysiology. The investigations are achieved by 

I. Proposing theoretical explanations and predictions for various real electromagnetic phenomena in the perspective of physical or biological electromagnetics, such as the electromagnetic field model of cardiac electric signal propagation.

II. Developing multidimensional geometrical numerical schemes, called the Method of moving frames, to solve partial differential equations on stationary or rotating curved surfaces and volumes in anisotropic medium.

Publications:
  • Sehun Chun, Method of moving frames to solve the time-dependent Maxwell's equations on anisotropic curved surfaces: Applications to invisible cloak and ELF propagation,  J. Comput. Phys., 340, 85-104, 2017. Download
  • S. Chun and C. Eskilsson, Method of moving frames to solve the shallow water equations on arbitrary rotating curved surfaces,  J. Compt. Phys., 333, 1-23, 2017. Download
  • Sehun Chun, An electromagnetic field model of cardiac excitation on the transverse electric current to induce the magnetic field, Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering 2016, WCE 2016, 29 June - 1 July, 2016, London, UK, pp. 1-9. Download
  • Sehun Chun, A mathematical model of the unidirectional block caused by the pulmonary veins for anatomically-induced atrial reentry, J. Biol. Phys., 40(3), 219-258, 2014. Download
  • Sehun Chun, Method of moving frames to solve (an)isotropic diffusion equations on curved surfaces, J. Sci. Compt., 59(3), 626-666, 2014. Download
  • Book: S. Chun and Jan S. Hesthaven, High-order accurate methods for solving Maxwell's equations: applications to photonic crystals and thin layer coatings (ISBN 978-3-639-51280-9), Saarbrucken, Germany, 2013, Scholars-Press.
  • Sehun Chun, Quantum electrodynamic theory of the cardiac excitation propagation I: construction of quantum electrodynamics in the bidomain, http://arxiv.org/abs/1310.30352013.
  • Sehun Chun, Method of moving frames to solve conservation laws on curved surfaces, J. Sci. Compt., 53(2), 268-294, 2012. Download
  • Peter E. J. Vos, C. Eskilsson, A. Bolis, S. Chun, R.M. Kirby and S. J. Sherwin. A Generic Framework of Time-Stepping PDEs: general linear methods, object-orientated implementation and application to fluid problems, Int. J. Compt. Fluid. Dyn., 24(3), 2011. Download
  • S. Chun, H. Haddar and J.S. Hesthaven. High-order accurate thin layer approximations for time-domain electromagnetics, Part II: Transmission layers, J. Compt. Appl. Math., 2587-2608, 234(8), 2010. Download
  • S. Chun and J.S. Hesthaven. High-order accurate thin layer approximations for time-domain electromagnetics, Part I: General metal backed coatings, J. Compt. Appl. Math., 598-611, 231, 2009. Download
  • S. Chun and J.S. Hesthaven. PDE constrained optimization and design of frozen mode crystals, Comm. Compt. Phys.  878-898, 3(4), 2008. Download
  • S. Chun and J.S. Hesthaven. Modeling of the frozen mode phenomenon and its sensitivity using Discontinuous Galerkin Methods, Comm. Compt. Phys., 611-639, 2(4), 2007. Download

  • Method of moving frames to solve the shallow water equations on arbitrary rotating curved surfaces, Partial Differential Equations on the Sphere (PDEs), Paris, France, April 2017.
  • An electromagnetic field model of cardiac excitation on the transverse electric current to induce the magnetic field (Invited Talk), International Conference of Applied and Engineering Mathematics, World Congress on Engineering 2016, London, United Kingdom, June 2016.

  • An electrodynamic model of the cardiac electric signal propagation, Latest Advances in Cardiac Modelling, Munich, Germany,  March 2015.
  • Lagrangian and Hamiltonian approach in the mathematical analysis of the cardiac excitation propagation, Southern Africa Mathematical Sciences Association, Stellenbosch, South Africa, November 2013.
  • How to solve PDEs numerically in Riemannian geometry?, South African Symposium on Numerical and Applied Mathematics (SANAM), Stellenbosch, South Africa, April 2013.
  • Introducing the method of moving frames to solve PDEs on curved surfaces, International Conference on Spectral and High order Methods (ICOSAHOM), Tunis, Tunisia, June 2012.
  • Curvature in the Heart, KMS and AMS annual meeting, Seoul, South Korea, December 2009.
  • High-order methods for simulating cardiac electrophysiological phenomena, Bioengineering, Oxford, UK, September 2009.
  • High-order methods for simulating cardiac electrophysiological phenomena, International Conference on Spectral and High order Methods (ICOSAHOM), Trondheim, Norway, June 2009.

Past Students and Postdocs: 
  • Ms. Faraniana Rasolofoson, Jul. 2012 - Dec. 2013, M. Sc. Program, Comparative studies on the impacts of various fluxes in a discontinuous Galerkin scheme for two-dimensional shallow water equations, African Institute for Mathematical Sciences and Stellenbosch University, South Africa.
  • Mr. Mamadou Ballo Sall, Oct. 2013 - Jul. 2015, M. Sc. Program, Numerical solution of Maxwell's equations in two dimensional domain by the discontinuous Galerkin method, African Institute for Mathematical Sciences and Stellenbosch University, South Africa.
  • Dr. Ehsan Kazemi Foroushani, Jan. 2017 - Aug. 2017, Postdoctoral fellowship granted by NRF, Incorporation of the MMF schemes into Nektar++, Underwood International College, Yonsei University, South Korea.

Other Activities:
  •  Surfer, Biker, Runner, Skier, Fencer, Shortstop and lefty. 
  •          Coffee cart for the homeless, Cape Town, South Africa, 2014.
  •  Member of the Western Cape Fencing Academy, 2014.
  •  Sunday hosting team at Holy Trinity Church at Brompton, London, UK, 2009 - 2010.
  •  Sunday service van driver for the First Korean Church in Cambridge, Boston, USA, 2007 - 2008.
  •  The Math Resource Center (MRC) staff, Department of Mathematics, Providence, USA, 2004.
  •  Air traffic controller in Korean Army, Yangpyung, South Korea, 1996 -1997.