Kuiper Materials Imaging and Characterization Facility
Materials research and student training at large land-grant universities like the University of Arizona require routine access to state-of-the-art instrumentation that combines 2D- and 3D-analysis of composition and structure from cm to atomic length scales. Information on atomic structure, crystal chemistry, and spatial relationships is critical to understanding structure/property relationships of engineered materials as well as the origins of earth and planetary materials.
The Kuiper Materials Imaging and Characterization Facility facility is located in the sub-basement of the Gerard P. Kuiper building for Space Sciences, which was constructed in 1966 with funds provided by NASA. Located approximately 30 ft. below ground and slab-on-grade, the basement was renovated and repurposed to house electron and ion microscopes. The Kuiper Materials Imaging and Characterization Facility serves the entire UA community, including regional private- and public-sector users. It is centrally supported by the UA office of Research, Discovery, and Innovation (RDI), as part of an expanding Core Facility program. Professional scientists staff the facility, manage daily operations, train users, and a faculty user committee provides oversight and scientific direction.
Kuiper Space Sciences Building,
University of Arizona
(PHOTO: Bob Lindberg/AZPM)
The facility consists of parallel instrument bays and includes space for sample preparation, meeting and workshops, and offices for laboratory scientists and visitors. A utility corridor was constructed behind several labs to house service equipment for the instruments.
The Scanning Electron Microscope (SEM) suite currently houses two microscopes with room for a third instrument. The Hitachi S-4800 cold-field emission gun (cold FEG) can operate between 0.5 keV and 30 keV. It is equipped with a Thermo-Noran Si(Li) energy dispersive X-ray spectrometer (EDS) running Noran SystemSix (NSS) software. The Hitachi S-3400 is a W thermal emitter with a variable-pressure chamber and Renishaw InVia Raman system with the Structural and Chemical Analyser (SCA) interface and Reflex microscope. It is equipped with secondary-electron and backscattered-electron detectors and a Thermo-Noran SDD EDS system operating NSS software. The SEM suite also has laboratory benchtop space for sample-preparation and includes a chemical fume hood.
The focused-ion-beam scanning electron microscope (FIB-SEM) lab houses an FEI Helios NanoLab 660. The Helios is equipped with an Elstar electron gun and monochromator, and is capable of electron beam resolution down to 0.6 nm from 15 kV to 2 kV. Its Tomahawk Ga+ ion column can be operated between 65 nA and 500 V for, respectively, removal of large volumes of material and final sample polishing. Under standard operating conditions, an ion beam resolution 2.5 nm at 30 kV is achievable. The Helios is equipped with in situ micromanipulation for creation and transfer of lamellae for TEM analysis. It is also equipped with an EDAX EDS system and electron backscatter diffraction analysis system for compositional and crystallographic analysis in two and three dimensions. Multiple polygons are supported for device patterning as well as the ability to directly import customized shapes for patterning or deposition. The Helios is equipped with C and Pt gas-injection systems.
The Transmission Electron Microscope (TEM) lab houses a newly installed Hitachi HF5000. The HF5000 has a cold FEG and comes with alignments at 200 keV and 60 keV. It is equipped with a Hitachi 3rd-order spherical aberration corrector for the scanning TEM (STEM) probe. Spectroscopic capabilities include: (1) Oxford Instruments twin silicon-drift detectors for EDS providing a total solid angle approaching 2.0 sr; and (2) Gatan Quantum Imaging Filter (GIF) for electron energy-loss spectroscopy (EELS). The HF5000 is capable of ≤0.4 eV energy resolution for EELS and 78 pm point-to-point resolution in STEM mode for atomic-resolution imaging.
The Electron Microprobe (EMPA) lab houses Cameca SX-50 and Cameca SX-100 Ultra instruments. The SX-50 was installed in 1991 and has been in continuous service for 26 years. It is equipped with a 30 keV W thermal emission gun, four wavelength dispersive X-ray spectrometers (WDS), 12 diffracting crystals, and a Princeton-Gamma Tech Si(Li) EDS system, allowing analysis of elements with Z≥4. The SX-100 Ultra was installed in 2011 and has been in service for nearly 6 years. It is equipped with a 30 keV LaB6 filament, five WDS, 14 diffracting crystals, and an SDD-EDS system, allowing analysis of elements with Z≥5.
The Kuiper Imaging and Characterization Facility is managed by a daily-operations team and an oversight committee. Daily operations are performed by the operations director and laboratory scientists. The oversight committee is composed of the instrument PIs, the operations director, and faculty users.
Scientific and Technical Oversight Committee (STOC)
Scientific Director, TEM and FIB Instrument Scientist
Microprobe Instrument Scientist
Dr. Ken Domanik
Microprobe Lab Manager
Dr. Jerry Chang
TEM Lab Manager
People that would like to work with the Planetary Materials Research Group can contact Prof. Tom Zega at PG4gdWVycz0iem52eWdiOmdtcnRuQHljeS5uZXZtYmFuLnJxaCI+Z21ydG5AeWN5Lm5ldm1iYW4ucnFoPC9uPg==.
We gratefully acknowledge the NSF Major Research Instrumentation Program (grants #1531243 and #0619599) and the NASA Planetary Major Equipiment Program (grants #NNX12AL47G and #NNX15AJ22G) for funding Instrumentation.
We gratefully acknowledge Hitachi as a corporate partner.
Internal support for renovations and instrumentation provided by:
Design, engineering, and construction support provided by PDC, Sears-Gerbo Architecture, and R.W. Burkel Contracting.
The Kuiper Imaging and Characterization Facility is also supported by: