FEI Helios 650 Nanolab SEM/FIB


Materials Science, Biological Sciences, Geological Sciences, Defect & Failure Analysis

  • Surface and cross section imaging (topology, chemistry, phase contrast)
  • Orientation imaging
  • Serial milling, imaging and 3D reconstruction
  • TEM and APT specimen preparation


Allen Hunter


Room G025


Publications, presentations, and posters resulting from work on this instrument should state: “The authors acknowledge the financial support of the University of Michigan College of Engineering and technical support from the Michigan Center for Materials Characterization.


  • Accelerating Voltage
    • Electrons: Landing energy 50V to 30 kV
    • Ions: 0.5 kV to 30 kV
  • Beam Current
    • Electrons: 0.8 pA – 26 nA
    • Ions: 0.1 pA – 65 nA
  • Electron Filament: Schottky Field Emitter
  • Detectors
    • Secondary Electron Imaging – Everhart-Thornley Detector (ETD)
    • Secondary Electron Imaging – Through-the-lens Detector (TLD)
    • Backscattered Electron Imaging – Concentric Backscatter Deetector (CBS)
    • Scanning Transmission Imaging – STEM Detector (STEM)
    • Ion Imaging – ICE Detector (ICE)
    • NavCam – CCD Camera for sample navigation
    • In chamber viewing via CCD TV camera
    • EBSD – EDAX Hikari 450 pattern per second capable OIM Camera
    • X-ray – EDAX Apollo XL 30mm² UTW silicon drift detector
  • SEM Resolution
    • 0.8 nm @ 15 kV (TLD-SE)
    • 0.9 nm @ 1 kV (TLD-SE)
  • Ion Resolution
    • 4.0 nm at 30 kV using preferred statistical method
    • 2.5 nm at 30 kV using selective edge method
  • Gas Injectors
    • Platinum
    • Carbon
    • Insulator Deposition
  • Micromanipulator
    • Omniprobe Autoprobe 200
  • Included Software
    • AutoFIB, AutoTEM, 3DEDS, EBS3, Slice and View
  • Stages
    • Leica cryo stage

References and Publications

  1. Characteristic orientation relationships in nanoscale Al-Al2Cu Eutectic, S.J. Wang, G. Liu, J. Wang, A. Misra, Materials Characterization, 142, 170-178, 2018
  2. Plasticity of laser-processed nanoscale Al-Al2Cu eutectic alloy, S.J. Wang, G. Liu, D.Y. Xie, Q. Lei, B.P. Ramakrishnan, J. Mazumder, J. Wang, A. Misra, Acta Materialia, 156, 52-63, 2018
  3. Effects of substrate temperature and deposition rate on the phase separated morphology of co-sputtered, Cu-Mo thin films B. Derby, Y. Cui, J.K. Baldwin, A. Misra, Thin Solid Films, 647, 50-56, 2018
  4. STEM and APT Characterization of Scale Formation on a La,Hf,Ti-doped NiCrAl Model Alloy, KA Unocic, Y Chen, D Shin, EA Marquis, BA Pint, Micron 2018
  5. Deformation behavior of β’ and β”’ precipitates in Mg-RE alloys, ELS Solomon, EA Marquis, Materials Letters (2018)
  6. On α’ composition in thermally annealed and neutron-irradiated Fe- 9-18Cr alloys, ER Reese, M Bachhav, P Wells, T Yamamoto, GR Odette, EA Marquis, Journal of Nuclear Materials (2018) 
  7. Dose rate dependence of Cr precipitation in an ion-irradiated Fe-18Cr alloy, ER Reese, N Almirall, T Yamamoto, S Tumey, GR Odette, EA Marquis, Scripta Materialia 146 213–217 (2018)
  8. The effect of cold rolling on grain boundary structure and stress corrosion cracking susceptibility of twins in alloy 690 in simulated PWR primary water environment Kuang, W., G.S. Was, C. Miller, M. Kaufman, T. Alam, B. Gwalani, and R. Banerjee Corrosion science 130 126-137 2018
  9. He+ irradiation induced cracking and exfoliating on the surface of Ti3AlC2, H.H. Shen, F.Z. Li, H.B. Zhang, S.M. Peng, K. Sun, X.T. Zu and, L. Ao, Journal of Nuclear Materials, 485, 262-272, 2017
  10. Shape Evolution of Highly Lattice-Mismatched InN/InGaN Nanowire Heterostructures, Yan, Lifan, Arnab Hazari, Pallab Bhattacharya, and Joanna M. Millunchick., Journal of Electronic Materials, 47(2), 966-972, 2017
  11. Structural differences between capped GaSb nanostructures grown by Stranski-Krastanov and droplet epitaxy growth modes, Matt DeJarld, Lifan Yan, Marta Luengo-Kovac, Vanessa Sih, and Joanna Millunchick, Journal of Applied Physics, 121(3), 34301, 2017
  12. Droplet induced compositional inhomogeneities in GaAsBi, C. Ryan Tait, Lifan Yan, and Joanna M. Millunchick, Applied Physics Letters, 111(4), 42105, 2017
  13. The effect of injected interstitials on void formation in self- ion irradiated nickel containing concentrated solid solution alloys, Tai-ni, Yang, Chenyang Lu, Ke Jin, Yanwen Zhang, Hongbin Bei and Lumin Wang, Journal of Nuclear Materials, 488, 328-337, 2017
  14. The Co-evolution of Microstructure Features in Self-Ion Irradiated HT9 at Very High Damage Levels, E. Getto, G. Vancoevering, G.S. Was, Journal of Nuclear Materials, 484, 193-208, 2017
  15. The oxidation of alloy 690 in simulated pressurized water reactor primary water, Kuang, W., M. Song, P. Wang, and G.S. Was, Corrosion science, 126, 227-237, 2017
  16. Effect of laser surface remelting on the microstructure and properties of Al-Al2Cu-Si ternary eutectic alloy”, Bhupendera Prashanth Ramakrishnan, Qian Lei, Amit Misra & Jyoti Mazumder, Scientific Reports, 7, 13468, 2017
  17. Radiation-induced segregation on defect clusters in single-phase concentrated solid-solution alloys, Chenyang Lu, Taini Yang, Ke Jin, Ning Gao, Pengyuan Xiu, Yanwen Zhang, Fei Gao, Hongbin Bei, William J Weber, Kai Sun, Yan Dong, Lumin Wang, Acta Materialia, 127, 98-107, 2017
  18. Enhanced Radiation-tolerant Oxide Dispersion Strengthened Steel and its Microstructure Evolution under Helium-implantation and Heavy-ion Irradiation, Chenyang Lu, Zheng Lu, Xu Wang, Rui Xie, Zhengyuan Li, Michael Higgins, Chunming Liu, Fei Gao, Lumin Wang, Scientific reports, 7, 40343, 2017
  19. Microstructure of Localized Corrosion Front on Mg Alloys and the Relationship with Anodic Hydrogen Evolution, P-W Chu, E LeMire, EA Marquis, Corrosion Science 128 253-264 (2017)
  20. Influence of a silicon-bearing film on the early stage oxidation of pure titanium. K Chou, P-W Chu, CG Levi, EA Marquis. Journal of Materials Science  52(16), 9884-9894 (2017)
  21. Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska, MJ Gunsch, RM Kirpes, KR Kolesar, TE Barrett, S China, RJ Sheesley, A Laskin, A Wiedensohler, T Tuch,  KA Pratt, Atmospheric Chemistry and Physics, 17, 10879-10892, 2017
  22. Aerosol Emissions from Great Lakes Harmful Algal Blooms, NW May,  NE Olson, M Panas, JL Axson, PS Tirella, RM Kirpes, RL Craig, MJ Gunsch, S China, A Laskin, AP Ault, KA Pratt, Environmental Science and Technology , 52 (2), 397-405, 2017
  23. Structural refinement and nanomechanical response of laser remelted Al- Al2Cu lamellar eutectic”, “Qian Lei, Bhupendera Prashanth Ramakrishnan, Shujuan Wang, Yichen Wang,Jyotirmoy Mazumder, Amit Misra”, Materials Science & Engineering A , 706, 115–125, 2017
  24. Characterization of M2X formed under 5 MeV Fe2+ Irradiation at 460C, E. Getto, K. Sun, G.S. Was,, Journal of Nuclear Materials, 485, 154-158, 2017
  25. The effect of injected interstitials on void formation in self-ion irradiated nickel containing concentrated solid solution alloys, Tai-ni Yang, Chenyang Lu, Ke Jin, Miguel L Crespillo, Yanwen Zhang, Hongbin Bei, Lumin Wang, Journal of Nuclear Materials, 488, 328-337, 2017
  26. Effect of Y/Ti atomic ratio on microstructure of oxide dispersion strengthened alloys, Chenyang Lu, Zheng Lu, Rui Xie, Zhengyuan Li, Chunming Liu, Lumin Wang, Materials Characterization, 134, 35-40, 2017
  27. Irradiation assisted stress corrosion cracking (IASCC) of Nickel-base alloys in light water reactors environment-part I Microstrucuture characterization, M.Song, M.Wang, G.S Was, L.Nelson, R. Pathania, Environmental Degradation of Materials in Nuclear Power Systems, , 949-960, 2017
  28. Contributions of transported Prudhoe Bay oil field emissions to the aerosol population in Utqiagvik, Alaska MJ Gunsch, RM Kirpes, KR Kolesar, TE Barrett, S China, RJ Sheesley, A Laskin, A Wiedensohler, T Tuch, KA Pratt Atmospheric Chemistry and Physics 17 10879-10892 2017
  29. Effects of Fe concentration on the ion-irradiation induced defect evolution and hardening in Ni-Fe solid solution alloys, Ke Jin, Wei Guo, Chenyang Lu, Mohammad W Ullah, Yanwen Zhang, William J Weber, Lumin Wang, Jonathan D Poplawsky, Hongbin Bei, Acta Materialia, 121, 365-373, 2016
  30. Void Swelling and Microstructure Evolution at Very High Damage Levels in Self-Ion Irradiated Ferritic-Martensitic Steels, E. Getto, K. Sun, A.M. Monterrosa, Z. Jiao, M.J. Hackett, G.S. Was,, Journal of Nuclear Materials, 480, 159-176, 2016
  31. High performance red-emitting multiple layer InGaN/GaN quantum dot lasers, Thomas Frost, Arnab Hazari, Anthony Aiello, Md Zunaid Baten, Lifan Yan, Joanna Mirecki-Millunchick and Pallab Bhattacharya, Japanese Journal of Applied Physics, 55(3), 32101, 2016
  32. Methodology for Determining Void Swelling at Very High Damage under Ion Irradiation, E. Getto, K. Sun, S. Taller, A.M. Monterrosa, Z. Jiao, G.S. Was,, Journal of Nuclear Materials, 477, 273-279, 2016
  33. Three dimensional imaging of shear bands in bulk metallic glass composites, AH Hunter, M Gibbons, V Araullo-Peters, OD Restrepo, SR Niezgoda, W Windl, KM Flores, DC Hofmann, EA Marquis, Journal of Microscopy, 264(3), 304-310 , 2016
  34. Mechanism of radiation damage reduction in equiatomic multicomponent single phase alloys, F Granberg, K Nordlund, Mohammad W Ullah, Ke Jin, Chenyang Lu, Hongbin Bei, LM Wang, F Djurabekova, WJ Weber, Y Zhang, Physical review letters, 116, 135504, 2016
  35. Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys, Chenyang Lu, Liangliang Niu, Nanjun Chen, Ke Jin, Taini Yang, Pengyuan Xiu, Yanwen Zhang, Fei Gao, Hongbin Bei, Shi Shi, Mo-Rigen He, Ian M Robertson, William J Weber, Lumin Wang, Nature communications, 7, 13564, 2016
  36. Elastic strain energy control of the precipitate free zone around primary carbides in nickel base alloy 725, M.Song, J.-F. Wen, Z.Jiao, G.S Was, Acta Materialia, 120, 138-149, 2016
  37. Microstructure of HIPed and SPSed 9Cr-ODS steel and its effect on helium bubble formation, Chenyang Lu, Zheng Lu, Rui Xie, Chunming Liu, Lumin Wang, Journal of Nuclear Materials, 474, 65-75, 2016
  38. Direct observation of defect range and evolution in ion-irradiated single crystalline Ni and Ni binary alloys, Chenyang Lu, Ke Jin, Laurent K Béland, Feifei Zhang, Taini Yang, Liang Qiao, Yanwen Zhang, Hongbin Bei, Hans M Christen, Roger E Stoller, Lumin Wang, Scientific reports, 6, 19994, 2016
  39. Microstructure and Chemistry of Electrodeposited Mg Films. MN Bachhav, NT Hahn, KR Zavadil, EG Nelson, AJ Crowe, BM Bartlett, P-W Chu, VJ Araullo-Peters, and EA Marquis, Journal of The Electrochemical Society, 163 (13) D1-D6 (2016)
  40. Anodic Hydrogen Evolution and Localized Corrosion during Galvanostatic Polarization of a Peak-Aged Mg-Y-Nd-Zr Alloy, P-W Chu, EA Marquis, Journal of The Electrochemical Society 163 (8), C402-C409 (2016) 
  41. Towards an understanding of tensile deformation in Ti-based bulk metallic glass matrix composites with BCC dendrites, J Kolodziejska, H Kozachkov, K Kranjc, A Hunter, EA Marquis, K Flores, W Johnson, and D Hofmann, Scientific Reports 6 22563 (2016)