Dr. Wiesner’s laboratories at Duke University are well equipped for research in the areas of membrane science, water treatment, organic and inorganic pollutant analysis, colloid and nano-particle characterization, and water chemistry. Approximately 1200 sq feet of laboratory space is fully equipped for the fabrication, characterization, modification and evaluation of membranes, nanomaterials, and surface phenomena. A Cytovia (AETOS Technologies, Inc., Auborn, AL) attachment to a conventional optical microscope allows for visual inspection of phenomena with sub-100 nm resolution and a Kruss Instruments drop goniometer for quantifying surface tensions (and thus hydrophobicity) are both equipped with video cameras that is capable of capturing still images and movies. Instrumentation for nanometer-scale characterization includes a zetasizer/ ZetaPALS instrument and multi purpose titrator for performing photon correlation spectroscopy and measuring electrophoertic mobility of nano-scale particles, and a BET surface area and pore size analyzer (Beckman Coulter SA3100). In addition to instrumentation in Dr. Wiesner’s lab, the Shared Materials Instrumentation Facility (SMIF) at Duke University operates as an interdisciplinary shared use facility that includes Atomic force microscopes, scanning and transmission electron microscopes, x-ray diffractometry, x-ray photoelectron spectrometry, vertical scanning interferometry, FT-IR and Raman spectroscopy, as well as complete facilities for sample preparation and manipulation (e.g. microtome, sputterer, etc.).
CTscan, SEM, TEM, AFM, SAXS
SAXS
GANESHA 300XL+, SAXSlab **
Slit-collimated SAXSess MC2, Anton Paar **
High Resolution X-ray Computed Tomography Scanner XT H 225, Nikon*
At high resolution: ~1-3µm per pixel
FEI Tecnai Cryo Transmission Electron Microscopy (TEM) 200kV*
Scanning Electron microscope SEM-FEG
FEI XL30 SEM-FEG*
Environmental Scanning Electron microscope (ESEM) FEI XL30 ESEM with Bruker XFlash 4010 EDS Detector*
AFM1 Scanning Probe Microscopy*
Digital instruments dimension 3100
Microscope olympus BX-41, Associated High resolution adapter:
The CytoViva high resolution adapter replaces the standard microscope condenser. The specialized adapter focuses fixed-geometry, highly collimated light at oblique angles on the sample. This serves to dramatically improve contrast and signal-to-noise ratio which allows for optimized resolving power (<100nm) and detection (<50nm) capability of non-fluorescing samples.
+Camera
Polarizing Microscopes ML9400
The ML9400 series polarizing microscopes are equipped with both transmitted and reflected light capability.
*available via the Duke shared material facilities (SMIF)
**Available at duke in the SMIF platform via the Triangle SAXS platform
Particle sizer - Zeta potential - Streaming potential
Laser diffraction particle size analyzer for particle size from 10nm to 3.5mm
Mastersizer 3000, Malvern
Fractal Dimension:
Particle counting, shape and size analysis from ~400nm to 1mm
OCCHIO FLOWCELL FC200S+HR
Dynamic and static light scattering goniometer ALV (germany) CGS-3
Nanosizer ZS (Malvern Panalytical)
autotitrator unit associated with the nanosizer
Analytical instruments
Inductively Coupled Plasma (ICP-OES and ICP-AES) Prodidgy, Teledyne
Axial and radial views
Total organic carbon analyser, TOC-L cph/cpn, Shimadtzu with ASI-L Autosampler
Contact Angle Measuring Instrument (Kruss)
Spectrophotometer UV-Vis Hitachi 2810
High resolution satisfying European Pharmacopoeia
pH meter / Conductimeter / dissolved oxygene meter / Turbidimeter
Misc / Sample preparation
High Temperature Box Furnace ST-1600 (Sentrotech)
1600C Heating Chamber
Refrigerated incubator shaker/Balances/ sonicator /centrifuge/furnace/...