Strategy for Shared Experimental Facilities

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Strategy for Shared Experimental Facilities
NSF ST Center for Environmentally Responsible
Solvents and Processes
Encourage international partnerships
Foster collaboration
Educate students and postdocs
Outreach to industry
Encourage innovation in instrument/sensor design
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Equipment Expenditures

• Request from NSF 1,935,000
• Cost sharing by universities 1,508,000
• Cost sharing by Kenan Center 111,000
• Total expenditures 3,554,000

Excellent Match of NSF Equipment Funds World
Class Instrumentation Facilities
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Equipment Installed in NSFSTC

• Beowulf computational cluster for parallel
  processing
• Unique probes and cavities for 600 MHz
  narrow-bore NMR
• Optical spectroscopy apparatus for surface
  adsorption studies
• Variable angle scanning ellipsometer cell
• High pressure free meniscus- and spin-coating
  devices
• High pressure electrochemical sensors, rotating
  disk apparatus
• High pressure surface energy measurements
• High pressure batch, plug flow reactors
• High pressure membrane permeability modules
• High pressure slit die, couette,
  magneto-rheometer
• High P thermophysical properties laboratory at
  NC AT
• High pressure scattering cells (DLS, SLS, SAXS,
  SANS)

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Shared Experimental Facilities
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High-Pressure Pendant Drop Interfacial
Tensiometer
UT-Austin
6-portValve
PG
Light Source
Camera
HPLC injection pump
TC
High Pressure
Syringe Pump
Measurement Cell
(Variable Volume View Cell)
Optical Rail
Computer
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High-Pressure Pendant Drop Interfacial
Tensiometer

• Rapid data acquisition is available- up to 40
  ms/frame
• Equilibration between phases
• Interfacial area/surfactant
• Intefacial tensions down to 0.05 mN/m

DaRocha, S. R. P. Psathas, P. A. Klein, E.
Johnston, K. P. Concentrated CO2-in-Water
Emulsions with Nonionic Polymeric Surfactants. J.
Colloid Interface Sci. 2001, 239,
241-253.   Johnston, K. P. Cho, D. Ryoo, W.
Psathas, P. A. DaRocha, S. R. P. Webber, S. E.
Eastoe, J. DuPont, A. Steytler, D. C.
Water-in-Carbon Dioxide Macroemulsions and
Miniemulsions with a Hydrocarbon Sufactant.
Langmuir. 2001, 17, 7191-7193. Psathas, P. A.
Sander, E. A. Ryoo, W. S. Mitchell, D. Lagow,
R. J. Johnston, K. P. Interfacial Studies of
the Formation of Microemulsions of Water in
Carbon Dioxide with Fluorinated Surfactants. J.
Dispersion Sci. Technol. 2001, submitted,
  Psathas, P. A. Sander, E. A. Lim, K.-T.
Johnston, K. P. Mapping the Stability and
Curvature of Emulsions of Water and Supercritical
Carbon Dioxide with Interfacial Tension. sub. J.
Dispersion Sci. Tech. 2002, submitted,
  Psathas, P. A. Janowiak, M. Garcia-Rubio, L.
H. Johnston, K. P. Formation of Carbon
Dioxide-in-Water Miniemulsions Using the Phase
Inversion Temperature Method. Langmuir. 2002,
submitted,
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Wide Angle High Pressure Dynamic Light Scattering

• UNC-CH
• 514 nm argon ion laser
• Custom-designed cell for static
• and dynamic light scattering
• Black anodized aluminum body
• 1.8 cm3 volume with 49.5 cm3
• variable volume attachment
• Sapphire windows with anti-
• reflection coatings
• Continuous angle sweep from
• 25 to 140
• Pressure-rated above 6000 psi

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Low Angle High Pressure Dynamic Light Scattering

• UT-Austin
• Custom-designed cell for static and dynamic
  light scattering
• Sapphire windows with anti-reflection coatings
• Photodetector connected via a GRIN fiber optic
• Continuous angle sweep from 10 to 30 excellent
  complement to Wide Angle Dynamic Light Scattering
  Instrument at UNC-CH
• Applicable to study particle sizes in the range
  of 1-100 nm
• Successfully used to study polymers and
  microemulsions

Johnston, K. P. Cho, D. Ryoo, W. Psathas, P.
A. DaRocha, S. R. P. Webber, S. E. Eastoe, J.
DuPont, A. Steytler, D. C. Water-in-Carbon
Dioxide Macroemulsions and Miniemulsions with a
Hydrocarbon Surfactant. Langmuir. 2001, 17,
7191-7193.   Lee, C. T. Ryoo, W. Smith, P. G.
Arellano, J. Mitchell, D. R. Lagow, R. J.
Webber, S. E. Johnston, K. P. Carbon
Dioxide-in-Water Microemulsions J. Am. Chem. Soc.
2002, submitted.   Psathas, P. A. Sander, E.
A. Ryoo, W. S. Mitchell, D. Lagow, R. J.
Johnston, K. P. Interfacial Studies of the
Formation of Microemulsions of Water in Carbon
Dioxide with Fluorinated Surfactants. J.
Dispersion Sci. Technol. 2001, submitted,
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Shared Facilities Large Group Video Conferencing
Universities Video-conferencing Needs
Requirements
STC ERSP Video-conferencing Needs Requirements

• Collaboration with university video conferencing
  
• technical staff to leverage existing expertise
  facilities
• Synthesis of STC needs and university needs
• - A win-win situation
• Sonnenwald, D. et al. Collaboration in the Large
  Using Video Conferencing to facilitate Large
  Group Interaction, Knowledge and Information
  Technology in 21st Century Organizations 2002 in
  press.

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Example UNC Peabody Hall
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• UNC Equipment
• Loudspeakers
• Large (120) displays
• Smart Board (72)
• Overhead camera
• STC Purchases
• 5. Ceiling-mounted
• LCD Projectors
• 6. Zip drive for PC
• 7. Microphones

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1
1
6
Desk
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3
5
5
Desks, chairs microphones for participants
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1

• Similar purchases at other universities based on
  needs
• Supports weekly video conference meetings across
  Center
• Provides video streaming of conferences to the
  Internet

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Small Group Video-Conferencing

• Funded through NSF supplemental grant
• To support informal, interactive video
  conferencing meetings, such as project
  management team meetings
• Each university is receiving
• - 48 plasma display screen
• - Laptop (to share documents, data analysis
  in real time)
• - SmartBoard overlay
• - Vigo camera
• - Speakerphone

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UNC-CHs Beowulf Cluster

• 17 Compaq AlphaServer DS10s powered by 433MHz
  21264 chips with 256Mb memory
• 33 Dell Precision 330 Workstations powered by
  1.7GHz Pentium 4 with 1Gb memory
• Interprocessor communication provided by
  10/100Mb ethernet switches.

Monte Carlo Parallel Tempering simulations
execute 30 faster on our Beowulf cluster than on
the IBM SP at NCSC.
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UNC-CHs Beowulf Cluster

• 17 Compaq AlphaServer DS10s powered by 433MHz
  21264 chips with 256Mb memory
• 33 Dell Precision 330 Workstations powered by
  1.7GHz Pentium 4 with 1Gb memory
• Interprocessor communication provided by
  10/100Mb ethernet switches.

Recent results are being submitted to The Journal
of Chemical Physics 'Investigation of the
Properties of Homopolymer Chains by Monte Carlo
simulation. I. Second Virial Coefficient
'Investigation of the Properties of Homopolymer
Chains by Monte Carlo Simulation. I. Chain
Size Poster presented by David Shirvanyants
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NMR Laboratory for Compressible Media

• 600 MHz Narrow-bore NMR Spectrometer (UNC-CH)
• Probes Installed to Date
• Varian Broadband Switchable Probe
• Varian HCN Inverse Detection Probe
• Varian HFCX Inverse Detection Probe

• Final Probe Installation April, 2002
• Narlorac HFX Probe (1H 19F Decoupling)
• Nalorac 5mm 1H-19F Diffusion Probe

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NMR Laboratory for Compressible Media
System brought back to fully charged magnetic
field conditions in January, 2002 Examine in
situ 3-d structure and transport of polymer and
biologically derived systems dissolved in CO2
environments Posters by Baby Chandrika, Laura
Schoenbachler and Bin Xu
1H NMR of Sucrose Octaacetate in CO2 P 4000
psi, T 25?C
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Interfacial Science Laboratory

• EKSMA Sum-Frequency Generation System (UNC-CH)
• -Surface specific vibrational spectroscopy
• 6 cm-1 system installed December, 2002 with an
  upgrade to the first lt 2 cm-1 SFG system with
  wide tunability (555-4345 cm-1) April 2002
• Laboratory involved in a collaboration to
  examine analytical reliability of surface
  spectroscopy Poster by Michael Hurrey