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Sangmin An

Sangmin An is a CNST/UMD Postdoctoral Researcher in the Nanofabrication Research Group. He received a B.S. in Electronics and Communications Engineering from the Korea Maritime University, Korea and a Ph.D. in Physics from the Seoul National University, Korea. His doctoral research focused on developing a low-volume liquid delivery system using a nanopipette combined with a quartz tuning fork-atomic force microscope along with all digital phase-locked loop-based frequency modulation. Sangmin is working with Rachel Cannara to develop techniques for displacement-controlled atomic force microscopy (AFM) and to combine novel AFM systems with Raman spectroscopy, with the goal of producing new measurement techniques that relate local materials properties to interfacial forces at the nanometer scale. 

Selected Publications
  • Unified stress tensor of the hydration water layer, B. Kim, Qh. Kim, S. Kwon, S. An, K. Lee, M. Lee, and W. Jhe, Physical Review Letters 111, 246102 (2013).  
  • Mechanical properties of the nanoscale molecular cluster of water meniscus by high-precision frequency modulation atomic force spectroscopy, S. An, J. Kim, K. Lee, B. Kim, M. Lee, and W. Jhe, Applied Physics Letters 101, 053114 (2012).
  • Low-volume liquid delivery and nanolithography using a nanopipette combined with a quartz tuning fork-atomic force microscope, S. An, C. Stambaugh, G. Kim, M. Lee, Y. Kim, K. Lee, and W. Jhe, Nanoscale 4, 6493–6500 (2012).
Staff Photo - S. An.


CNST/UMD Postdoctoral Researcher
Nanofabrication Research Group


B.S. Electronic and Communication Engineering – Korea Maritime University, Korea

M.S. Electronic Engineering – Kyungpook National University, Korea

Ph.D. Physics – Seoul National University, Korea


Phone: 301-975-2160
Email: sangmin.an@nist.gov