Structural Probing

Contact: Oleg Gang

In-situ structural characterization can be performed for surfaces, thin films nanoparticles, biological complexes, nanofabricated structures and hybrid composites under environmental condition. We utilize the range of x-ray, optical, spectroscopic and scanning probe methods for structure characterization.

Capabilities

• Multipurpose X-ray Diffractometer, Rigaku Ultima III
  Contact: Oleg Gang
  The system is capable of characterization of thin films, bulks, and surfaces. Supported techniques: small angle scattering, in-plane diffraction, x-ray reflectivity, and powder diffraction. System is equipped with cross beam optics for point or parallel beam geometries.



• Customized Spectroscopic Ellipsometer J.A. Woollam M-2000 Spectroscopic
  Contact: Dmytro Nykypanchuk
  The instrument allows analysis and mapping of thin films and interfaces, with temperature control in air and in liquids. It includes: a horizontal sample stage, automated sample translations, auto-angle 45-90 deg, wavelength range 210-1690 nm, collimated light beam, CCD camera, sample heater, and in-liquid measurements.



• CFN Small Angle X-ray Scattering (SAXS) end-station at beamline x9 at NSLS
  Contact: Oleg Gang
  The beamline allows for simultaneous structure probing under the broad range of environmental conditions on scales from molecules to hundreds of nanometers for bulks (SAXS) and surfaces (GISAXS); supports resonant scattering at edges of particular interest to soft and bio- matter - S, Cl, P, K elements.
  
  The new X9 beamline is capable of x-ray scattering experiments in the energy range of 2-20keV, with a typical X-ray flux of ~10^12 photons per second at 8keV available at the sample (with 0.4mm beam). In addition to conventional SAXS, the endstation is also equipped to perform GISAXS, simultaneous SAXS/WAXS, microbeam SAXS (as small as 10 microns), and time-resolved SAXS, with sample/camera distances of up to 5m. The heart of the instrumentation is a vacuum sample/detector chamber that houses the WAXS detector, linear detector and a hexapod that replaces the traditional stacked-circle sample manipulator. The linear detector is a unique NSLS design featuring an 8 cm strip of 640 silicon elements with a 0.125 mm spacing.



• UV-Vis/NIR Spectrophotometer; PerkinElmer Lambda 950
  Contact: Dmytro Nykypanchuk
  High performance UV/Vis/NIR spectrophotometer with temperature control capabilities, operating range 175 nm - 3300 nm.



• Environmental Closed Loop Atomic Force Microscope; Asylum MFD-3D-BIO
  Contact: Dmytro Nykypanchuk
  Low noise performance with close loop sensors in all 3 axes. Nanopositioning system, head equipped with narrowband filter and topview IO optics and XY scanning stage. Standard scan modes include Q-controlled ac (with phase), contact mode (with lateral force), force curves and force volumes. Nanolithography and nanomanipulation included with custom scripting software.



• Total Internal Reflection Microcopy System (TIRF); Olympus IX81-ZDC
  Contact: Oleg Gang
  Total internal reflection fluorescence (TIRF) microscope utilizes an evanescent wave which penetrates into the medium of a lower refractive index up to a few hundred nanometers. This shallow penetration allows for selectively excitation of fluorophores within a few hundred nanometers of the optical interface. Our equipment includes 3 color excitation (red, green, or blue laser beam, respectively 633, 543, or 488 nm). The instrument can also be used as a standard wide field fluorescence microscope, with mercury lamp excitation, and includes a high sensitivity EMCC camera. TIRF system can operate as stand alone or integrated with Asylum Research MFP-3D AFM.



• Epifluorescent and Polarized Microscope Olympus BX51
  Contact: Dmytro Nykypanchuk



• Dynamic Light Scattering; Malvern Zetasizer Nano ZS and Zeta Potential
  Contact: Dmytro Nykypanchuk
  Measures size (0.6nm to 6000 nm), molecular weight, and zeta potential of dispersed particles and molecules in solution. Includes 4mW 633 He-Ne laser and research software.

Last Modified: May 6, 2008
Please forward all questions about this site to: Stephen Giordano.

One of ten national laboratories overseen and primarily funded by the Office of Science of the U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry and government researchers. Brookhaven is operated and managed for DOE’s Office of Science by Brookhaven Science Associates, a limited-liability company founded by Stony Brook University, the largest academic user of Laboratory facilities, and Battelle, a nonprofit, applied science and technology organization.

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