Materials Science and Geological Sciences

  • Surface imaging (topology, chemistry, phase contrast)
  • Orientation imaging (automated large scale, image stitching)


Nancy Senabulya Muyanja


Room G022


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


  • Accelerating Voltage 0-30kV
  • Filament: Schottky Field Emitter
  • Detectors
    • Secondary Electron Imaging – Everhart-Thornley Detector (ETD)
    • Backscattered Electron Detector (WD > 8mm) 
    • EDS (WD = 15mm) – EDAX
    • EBSD (WD= 10-20mm) – EDAX Hikari Camera
  • SEM Resolution: 1.2nm
  • Imaging mode
    • Resolution Mode (WD = 5-10mm): high resolution and low depth of focus
    • Depth Mode: good resolution and increased depth of focus
    • Field Mode: large field of view, high depth of focus but worse resolution
    • Wide Field Mode (WD >25mm): extra large field of view but focus is not accurate
  • GM Chamber and Sample Stage
    • Internal Diameter: 340mm (width) x 315mm (depth)
    • Maximum Specimen Height: 145mm without rotation stage; 116 with rotation stage
    • Maximum Specimen Weight: up to 8kg
    • Movement: x,y: +/- 65mm,; z: 0 to 100mm. 100mm is where the stage is all the way down; Tilt +/- 90 degree
  • Vacuum: Sputter Ion Pump for FEG and Molecular Drag Pump for chamber and column
  • PC and Software
    • SEM PC
      • MIRA3 Control Software
    • EDAX PC
      • TEAM for EDS and EBSD
      • OIM Analysis is on EDAX PC for EBSD data analysis
  • Sample Requirements
    • Not for magnet materials, especially powder samples.
    • Samples must be compatible with high vacuum, i.e., clean and dry. Samples should be handled with tweezers or gloves.
    • Samples need to be conductive and connected to ground (that is the stage); if not, the surface should be coated with a conductive layer, such as Au or Carbon, then apply a conductive tape, Copper or Carbon tape, connected to the SEM stub. The stub should be tightened by screw.
  • Bruker Hysitron PI 89 PicoIndenter installed to provide option for nanomechanical testing with simultaneous imaging. PI 89 specifications below:
    • Standard Low Load Transducer: maximum15mN indent / 14mN tensile
    • High Load Transducer : maximum 500mN indent / 100mN tensile
    • Maximum Displacement:  150um
    • Force Noise Floor inside SEM: LL <0.4uN, HL<5uN
    • Force Noise Floor in ideal case:  LL<50nN
    • Displacement Noise Floor inside SEM: <1nm
    • Displacement Noise Floor in ideal case: <0.1nm
    • Sample Positionning Range: 12mm (Z) x 26mm(X) x 29mm(Y indentation axis)
    • Tilt-rotation stage (maximum 400mN)
    • Load or displacement-controlled testing modes enable nanoindentation, compression, tension, fatigue, creep or bending tests. 
    • In-situ heating elements to probe and sample, indentation at temperature up to 800C
    • Probes:
      • Standard Berkovich (1)
      • Flat-end (3): 1um, 5um, 20um
      • Cube corner (1)
      • Cono-spherical (1) tip radius less then 1um 
      • 800C Berkovich (1) for heating stage only
      • Diamond gripper (1) for direct-pull test on dog-bone sample



  1. Effect of Cooling Rate on Nano-Eutectic Formation in Laser Surface Remelted and Rare Earth Modified Hypereutectic Al-20Si Alloys, M Kayitmazbatir, H.H. Lien, J. Mazumder, J. Wang, A. Misra, Crystals, 12(5), 750, 2022
  2. Calcium Pretreatment Enhances Fluoride Reactivity with Enamel and Dentine, M. da Silva Spinola, L.M.A. Tenuta, Archives of Oral Biology, 134, 105338, 2022
  3. Effect of Particles of Irregular Size on the Microstructure and Structural Color of Self-Assembled Colloidal Crystals, T. Liu, B. VanSaders, J.T. Keating, S.C. Glotzer, M.J. Solomon, Langmuir, 37(45), 13300-13308, 2021
  4. Geometric Optimization of Bismuth Vanadate Core–Shell Nanowire Photoanodes using Atomic Layer Deposition, A.R. Bielinski, A.J. Gayle, S. Lee, N.P. Dasgupta, ACS Applied Materials & Interfaces, 2021
  5. Dynamics of Ga penetration in Textured Al Polycrystal Revealed through Multimodal Three-Dimensional Analysis, N. Lu, S. Moniri, M.R. Wiltse, N. Senabulya, A.J. Shahani, Acta Materialia, 217, 117145, 2021
  6. Technical Agave Fiber Tensile Performance: The Effects of Fiber Heat-Treatment, A. Langhorst, M. Ravandi, D. Mielewski, M. Banu, Industrial Crops and Products, 171, 113832, 2021
  7. Dynamics of Ga Penetration in Textured Al Polycrystal Revealed through Multimodal Three-Dimensional Analysis, N. Lu, S. Moniri, M.R. Wiltse, J. Spielman, N. Senabulya, A.J. Shahani, Acta Materialia, 217, 117145, 2021
  8. Tunable Atomic Layer Deposition into Ultra-High-Aspect-Ratio (> 60000: 1) Aerogel Monoliths Enabled by Transport Modeling, A.J. Gayle, Z.J. Berquist, Y. Chen, A.J. Hill, J.Y. Hoffman, A.R. Bielinski, A. Lenert, N.P. Dasgupta, Chemistry of Materials, 2021
  9. Generation of systemic antitumour Immunity via the in situ modulation of the gut microbiome by an orally administered inulin gel, K. Han, J. Nam, J. Xu, X. Sun, X. Huang, O. Animasahun, A. Achreja, J.H. Jeon, B. Pursley, N. Kamada, G.Y. Chen, D. Nagrath, J.J. Moon, Nature Biomedical Engineering, 2021
  10. Effects of Minor Alloying Elements on Alumina Transformation During the Transient Oxidation of β-NiAl, T.L. Barth, E.A. Marquis, Oxidation of Metals, 95, 293-309, 2021
  11. Ag-doped Bioactive Glass-Ceramic 3D Scaffolds: Microstructural, Antibacterial, and Biological Properties, A.C. Marsh, N.P. Mellott, M. Crimp, A. Wren, N. Hammer, X. Chatzistavrou, Journal of the European Ceramic Society, 41(6), 3717-3730, 2021
  12. Distribution of Transition Metal Elements in an Al-Si-Cu-Based Alloy, Q. Shi, Y. Huo, T. Berman, B. Ghaffri, M. Lei, J. Allison, Scripta Materialia, 190, 97-102, 2021
  13. Origins of Non-Random Particle Distributions and Implications to Abnormal Grain Growth in an Al-3.5 Wt Pct Cu Alloy, N. Lu, J. Kang, A.J. Shahani, Metallurgical and Materials Transactions A, 2021
  14. Mechanical Performance of Co-Deposited Immiscible Cu–Ta Thin Films, E. Raeker, M. Powers, A. Misra, Scientific Reports, 10, 17775, 2020
  15. Developing of Nano Sized Fibrous Eutectic Silicon in Hypereutectic Al–Si Alloy by Laser Remelting, J. Abboud, J. Mazumder, Scientific Reports, 10, 12090, 2020
  16. Efficient Fast-Charging of Lithium-Ion Batteries Enabled by Laser-Patterned Three-Dimensional Graphite Anode Architectures, K-H. Chen, M.J. Namkoong, V. Goel, C. Yang, S. Kazemiabnavi, S.M. Mortuza, E. Kazyak, J. Mazumder, K. Thornton, J. Sakamoto, N.P. Dasgupta, Journal of Power Sources, 471, 228475, 2020
  17. Formation of a Three-Phase Spiral Structure due to Competitive Growth of a Peritectic Phase with a Metastable Eutectic, Y. Wang, J. Gao, Y. Ren, V. de Andrade, A.J. Shahani, JOM, 72, 2965-2973, 2020
  18. Electrospinning of Dexamethasone/Cyclodextrin Inclusion Complex Polymer Fibers for Dental Pulp Therapy, A. Daghrery, Z. Aytac, N. Dubey, L. Mei, A. Schwendeman, M.C. Bottino, Colloids and Surfaces B: Biointerfaces, 191, 111011, 2020
  19. Electro-Chemo-Mechanical Evolution of Sulfide Solid Electrolyte/Li Metal Interfaces: Operando Analysis and ALD Interlayer Effects, A.L. Davis, R. Garcia-Mendez, K.N. Wood, E. Kazyak, K-H. Chen, G. Teeter, J. Sakamoto, N.P. Dasgupta, Journal of Materials Chemistry A, 2020
  20. Multi-Step Crystallization of Self-Organized Spiral Eutectics, S. Moniri, H. Bale, T. Volkenandt, Y. Wang, J. Gao, T. Lu, K. Sun, R.O. Richie, A.J. Shahani, Small, 1906146, 2020
  21. Correlating the Effect of Dopant Type (Al, Ga, Ta) on the Mechanical and Electrical Properties of Hot-Pressed Li-Garnet Electrolyte, G. Han, B. Kinzer, R. Garcia-Mendez, H. Choe, J. Wolfenstine, J. Sakamoto, Journal of the European Ceramic Society, 40(5), 1999-2006, 2020
  22. Hillock Formation in Co-deposited Thin Films of Immiscible Metal Alloy Systems, M. Powers, B. Derby, E. Raeker, N. Champion, A. Misra, Thin Solid Films, 137692, 2019
  23. Surface Morphology and Straight Crack Generation of Ultrafast Laser Irradiated β-Ga203, M. Ahn, A. Sarracino, A. Ansari, B. Torralva, S. Yalisove, J. Phillips, Journal of Applied Physics, 125(22), 223104, 2019
  24. Synergistic Effect of 3D Current Collectors and ALD Surface Modification for High Coulombic Efficiency Lithium Metal Anodes, K. Chen, A. Sanchez, E. Kazyak, A. Davis, N. Dasgupta, Advanced Energy Materials, 9, 2019
  25. A Quadruple-Band Metal-Nitride Nanowire Artificial Photosynthesis System for High Efficiency Photocatalytic Overall Solar Water Splitting, Y. Wang, Y. Wu, K. Sun, Z. Mi, Materials Horizons, 2019
  26. An In0.42Ga0.58N Tunnel Junction Nanowire Photocathode Monolithically Integrated on a Nonplanar Si Wafer, Y. Wang, S. Vanka, J. Gim, Y. Wu, R. Fan, Y. Zhang, J. Shi, M. Shen, R. Hovden, Z. Mi, Nano Energy, 57, 405-413, 2019
  27. Integrated Imaging in Three Dimensions: Providing a New Lens on Grain Boundaries, Particles, and their Correlations in Polycrystalline Silicon, R. Keinan, H. Bale, N. Gueninchault, E.M. Lauridsen, A.J. Shahani, Acta Materialia, 148, 225-234, 2018
  28. Solar Water Oxidation by an InGaN Nanowire Photoanode with a Bandgap of 1.7 eV, S. Chu, S. Vanka, Y. Wang, J. Gim, Y. Wang, Y. Ra, R. Hovden, H. Guo, I. Shih, and Z. Mi, ACS Energy Letters, 3, 307-314, 2018
  29. Grain Size Effects on NiTi Shape Memory Alloy Fatigue Crack Growth, W. LePage, A. Ahadi, W Lenthe, Q.P. Sun, T. Pollock, J. Shaw, S. Daly, Journal of Materials Research, 33(2), 91-107, 2018
  30. Deformation Behavior of β’ and β”’ Precipitates in Mg-RE Alloys, E.L.S. Solomon, E.A. Marquis, Materials Letters, 2017
  31. Microstructure of Localized Corrosion Front on Mg Alloys and the Relationship with Hydrogen Evolution, P. Chu, E. Le Mire, E.A. Marquis, Corrosion Science, 128, 253-264, 2017