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Gheorghe Stan

Physicist

Research Interests

  • Develop and customize instrumentation for atomic force microscopy to enable advanced and reliable nanoscale property characterization, with direct applications in nanoelectronics, micro- and nano-electromechanical systems, and biotechnology.
  • Atomic force microscopy based characterization of the structure-mechanical property relationship at the nanoscale. Interrogate the size-dependence of the elastic moduli of structures of reduced dimensionality.
  • Develop contact resonance atomic force microscopy (CR-AFM) for nanoscale elastic modulus measurements. Assess the suitability of CR-AFM in performing quantitative measurements on materials with elastic moduli in the range of GPa to hundreds of GPa.

Stan Figure 1
Figure 1(left): Measurements of the normal and tangential elastic moduli of nanowires; Figure 2 (center): Contact resonance atomic force microscopy mapping on granular Au films; Figure 3 (right): Probing the elastic modulus on the inner part of AlN nanotubes.

Patents

  • US Patent # 9,535,085 "Intermittent Contact Resonance Atomic Force Microscopy and Process for Intermittent Contact Resonance Atomic Force Microscopy," Inventors: Stan & Gates (2017)

Google Scholar Citations: http://scholar.google.com/citations?user=dqnptVIAAAAJ&hl=en

Awards

2009 MSEL Distinguished Associate Award

Publications

After oxidation, zinc nanoparticles lose their ability to enhance responses to odorants

Author(s)
Samantha Hagerty, Yasmine C. Daniels, Melissa Singletary, Oleg Pustovyy, Ludmila Globa, William A. MacCrehan, Shinichiro Muramoto, June W. Lau, Edward Morrison, Iryna Sorokulova, Vitaly Vodyanoy, Gheorghe NMN Stan
Electrical responses of olfactory sensory neurons to odorants were examined in the presence of zinc nanoparticles of various sizes and degrees of oxidation. The

Silicon epitaxy on H-terminated Si (100) surfaces at 250° C

Author(s)
Xiao Deng, Pradeep N. Namboodiri, Kai Li, Xiqiao Wang, Gheorghe Stan, Alline F. Myers, Xinbin Cheng, Tongbao Li, Richard M. Silver
Silicon on silicon growth at low temperatures has become increasing important due to its use to encapsulate buried nanoscale dopant devices. The performance of
Created July 30, 2019, Updated November 14, 2019