Dr. Sheng Zhang

Dr. Zhang is currently an Electron Microscopy Specialist at the Imaging Facility of CUNY Advanced Science Research Center. Before joining CUNY, Dr. Zhang was a postdoctoral researcher in the Materials Science Division, Argonne National Laboratory. His research has involved depositing multilayer thin films, lithographic patterning and 3D visualization of magnetic materials and nanostructures using aberration-corrected Lorentz TEM, and in situ exploration of their magnetic, electric, thermal and structural properties. He has been working on spin valve heterostructures with exchange bias and exchange coupling, magnetic multilayer thin films with topological spin structures – skyrmions, high aspect ratio ferromagnetic nanofibers, and resistance switching oxides via self assembly of block copolymers and sequential infiltration synthesis. Dr. Zhang received his Ph.D. in Physics at the Pennsylvania State University. His dissertation was mainly on geometrically frustrated nanomagnets, also known as “artificial spin ice”, which consist of lithographically fabricated nanomagnets in close proximity. An innovative protocol of thermal annealing was employed on these frustrated nanomagnets to truly achieve their ground state equilibrium and realized incipient magnetic charge crystallization for the first time.

Research Interests

Dr.Zhang’s research work has involved sample preparation and characterization using aberration-corrected TEM in various modes (Bright field, Dark field, Diffraction, Lorentz mode, EDS, EELS, EF-TEM, STEM, tomography, holography) and dual-beam SEM/FIB. He has been working on metal thin films, oxide heterostructures, nanowires, nanoparticles, and crystal materials. Besides magnetic and oxide materials, Dr. Zhang is also very interested to make collaborations with scientists in many science and engineering areas, including but not limited to 2D materials, semiconductors, polymers, batteries, biomaterials, etc., to investigate their advanced properties with integrated imaging methods combined with analytical approaches and data processing.

Publications

AuthorsTitleJournalYearVolumePages

S. Zhang, A.K. Petford-Long and C. Phatak

Creation of artificial skyrmions and antiskyrmions by anisotropy engineering

Scientific Reports 6

2016

31248

S. Zhang, Z. Zhou, G. Grocke, A. Petford-Long, Y. Liu, X. Chen and C. Phatak

Visualization of Magnetization in CoFe Nanofibers by Lorentz TEM and Electron Holography

Microscopy and Microanalysis

2016

S3

1692-1693

S. Zhang, A.K. Petford-Long, O. Heinonen, and C. Phatak

Vortex jump behavior in coupled nanomagnetic heterostructures

Appl. Phys. Lett.

2014

105

212409

I. Gilbert, G. Chern, S. Zhang, L. O’Brien, B. Fore, C. Nisoli, and P. Schiffer

Emergent ice rule and magnetic charge screening from vertex frustration in artificial spin ice

Nature Physics

2014

10

670–675

S. Zhang, I. Gilbert, C. Nisoli, G. Chern, M. J. Erickson, L. O’Brien, C. Leighton, P. E. Lammert, V. H. Crespi and P. Schiffer

Crystallites of Magnetic Charges in Artificial Spin Ice

Nature

2013

500

553–557

S. Zhang, J. Li, I. Gilbert, J. Bartell, M. J. Erickson, Y. Pan, P. E. Lammert, C. Nisoli, K. K. Kohli, R. Misra, V. H. Crespi, N. Samarth, C. Leighton and P. Schiffer

Perpendicular Magnetization and Generic Realization of the Ising Model in Artificial Spin Ice

Phys. Rev. Lett.

2012

109

087201

S. Zhang, J. Li, J. Bartell, X. Ke, C. Nisoli, P. E. Lammert, V. H. Crespi and P. Schiffer

Ignoring Your Neighbors: Moment Correlations Dominated by Indirect or Distant Interactions in an Ordered Nanomagnet Array

Phys. Rev. Lett.

2011

107

117204

Job History

FromToTitleLocation

2017

Electron Microscopy Specialist

CUNY Advanced Science Research Center

2013

2017

Postdoctoral Research Associate

Argonne National Laboratory

2007

2013

Ph.D. Candidate

Pennsylvania State University

Phone Number

212.413.3406