Understanding domain behavior and interactions in ferromagnetic heterostructures at the mesoscale using in-situ Lorentz transmission electron microscopy.
Phase retrieval and 3D tomographic reconstructions of scalar and vector fields for TEM.
Image simulation for TEM as well as development of integrated imaging approach for TEM and X-ray microscopy.
M. Tech – 2005 (Ceramics and Composites),
Metallurgical and Materials Science Engineering,
Indian Institute of Technology, Bombay, India
B. Tech – 2004,
Metallurgical and Materials Science Engineering,
Indian Institute of Technology, Bombay, India
Awards
Awarded the Early Career Award from joint Institute of Sustainability and Energy at Northwestern-Argonne to perform research on electrostatic potential mapping using electron microscopy, June 2015.
Awarded equipment grant from Materials Science Division (ANL) to upgrade Lorentz TEM for achieving excellent scientific goals, June 2014.
Awarded fellowship on international cooperation by Univ. of Paul Sabatier, Toulouse on “Combining Vector Field Tomography using off-axis and in-line holography”, September 2012.
Awarded the Presidential Student award for outstanding research work by the Microscopy Society of America, August 2008.
Selected Publications
X. Yang, F. De Carlo, C. Phatak, and D. Gürsoy, “A convolutional neural network approach to calibrating the rotation axis for X-ray computed tomography,” J. Synchrotron Radiat., 24 (2), 469–475 (2017).
S. Zhang, A. K. Petford-Long, and C. Phatak, “Creation of artificial skyrmions and antiskyrmions by anisotropy engineering,” Sci. Rep., 6, 31248 (2016).
V. Brajuskovic, F. Barrows, C. Phatak, and A. K. Petford-Long, “Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices,” Sci. Rep., 6, 34384 (2016).
C. Phatak, O. Heinonen, M. De Graef, and A. Petford-Long, “Nanoscale skyrmions in a non-chiral metallic multiferroic: Ni2MnGa,” Nano Lett., 16(7), 4141–4148 (2016).
C. Phatak, A. K. Petford-Long, and M. De Graef, “Recent advances in Lorentz microscopy,” Curr. Opin. Solid State Mater. Sci., 20 (2), 107–114 (2016).
C. Phatak, L. de Knoop, F. Houdellier, C. Gatel, M. J. Hÿtch, A. Masseboeuf, “Quantitative 3D electromagnetic field determination of 1D nanostructures from single projection.” Ultramicroscopy, 164, 24–30 (2016).
C. Phatak and D. Gürsoy, “Iterative reconstruction of magnetic induction using Lorentz transmission electron tomography.,” Ultramicroscopy,150, 54–64 (2015).
Y. Choi et al., “Enhancement of Local Piezoresponse in Polymer Ferroelectrics via Nanoscale Control of Microstructure,” ACS Nano, 9 (2), 1809–1819 (2015).
C. Phatak, A. K. Petford-Long, H. Zheng, J. F. Mitchell, S. Rosenkranz, and M. R. Norman, “Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale,” Phys. Rev. B, 92, 224418 (2015).
S. Hong, S. H. Chang, C. Phatak, B. Magyari-Kope, Y. Nishi, S. Chattopadhyay, J. H. Kim, “Mechanism Study of Reversible Resistivity Change in Oxide Thin Film,” ECS Trans.,69 (3), 51–55 (2015).
Professional Activities
Programming committee member for 21st International Conference on Magnetism, San Francisco, 2018
Programming committee member for Annual Magnetism and Magnetic Materials Conference, New Orleans, LA, October 2016.
Co-organizer of a symposium on “Driving Discovery: Integration of multi-modal imaging and data analysis” at the Annual TMS conference, Feb 2016.
IEEE Chicago Section, Students Activities Chair, 2015 - present.
