Particulate

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NSF Directorate for Engineering Division
of Chemical, Bioengineering, Environmental, and
Transport Systems (CBET) Transport and Thermal
Fluids Cluster Particulate and Multiphase
Processes (PMP) Program Director - Marc Ingber -
mingber _at_ nsf.gov
Research Focus and Examples ? Current Research
Focus ? Typical PMP Projects
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Current Research FocusFundamental research on
transport phenomena in dispersed and
microstructured systems

• ? MULTIPHASE FLOW PHENOMENA MICROSTRUCTURED
  FLUIDS (20)
• Bubble/droplet dynamics emulsions
  particle-laden flows multiphase flows in
• microfluidic devices colloids, self and
  directed assembly materials processing
• ? PARTICLE TECHNOLOGY (25)
• Production of particles with engineered
  characteristics, unique composition, and
• surface properties particle assembly into
  functional structures, sensors, and
• devices particle tagging
• ? GRANULAR SYSTEMS (25)
  
• Separation processes force chains modeling,
  DEM simulations lubrication
• powder flows effects of cohesion
  pharmaceutical and neutraceutical processing
• ? ENVIRONMENTAL (10)
  
• Processes leading to new technologies for
  environmental sustainability sediment
• transport avalanches plumes viscous
  resuspension fate and transport of
• nanoparticles
• ? MULTIPHASE TRANSPORT IN BIOLOGICAL SYSTEMS
  (20)

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Self Assembled Biomimetic Antireflection Coatings
For Solar Cells and Collectors
Peng Jiang - University of Florida

• ? Novel templating nanofabrication platform
• ? Mimics antireflective moth eyes
• ? Mimics superhydrophobic cicada
• ? Spin-coated colloidal crystals with
• remarkably large domain sizes and
• unusual nonclose-packed structures

Figure
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• Dynamics of Microbubbles in the Human
  Circulation Effects of Flow Pulsatility
• and Ultrasound Radation

Alberto Aliseda - University of Washington
Methodology can also be used to treat tumors and
prevent strokes
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Exploring the Fundamentals and Applications of
Pickering Emulsions Lenore Dai - Arizona State
University
SEM Images with X-ray Microanalysis
? Background ? In contrast to conventional
emulsions using surfactants as
stabilizers, Pickering emulsions use solid
particles. ? Provide a novel method to
synthesize core-shell latexes through
one-step Pickering emulsion polymerization. ?
Results ? Successfully synthesized
silica-polystryrene composite latexes
using Pickering emulsions as a template. ?
Inclusion of nanoparticles has a strong effect on
the size distribution of the
composite-latexes. ? Additional
surfactants either inhibit nanoparticle
interfacial assembly or even latex formation. ?
Impact ? Novel and simple methods to
synthesize functional particulates.
? Unique class of materials that have wide
potential applications.
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Formation of Multiscale Biopolymer Particle
Structures for Novel Biosorbent Design
Nina Schapley - Rutgers University
The following specific aims support the Project
Goal ? Synthesizing biopolimer microbeads
coated with complementary biopolymer
nanoparticles and characterizing
equilibrium heavy metal ion uptake by the
combined structures. ? Understanding mechanisms
of particle size separation in a bimodal
suspension flowing through expansion,
contraction and bifurcation geometries, affecting
the arrangement of microparticles when a
fixed bed is formed. (See Figure 1.) ?
Quantifying the kinetics of metal ion adsorption
in flow through a fixed bed of biopolymer
micro-nanoparticle structures, and hence
gaining insight into the dominant mass
transfer processes.
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Magnetically and Thermally Active Nanoparticles
for Cancer Treatment
Carlos Rinaldi - University of Puerto
Rico-Mayaguez

• Potential Advantages of Nanoparticles
• ? Targeted energy delivery at the nanoscale
• ? Uniform hyperthermia at the tumor site
• ? Fe3O4 nanoparticles are bio-compatible
• ? Inject and forget treatment
• ? Particle size 10-100 nm
• ? Injectable
• ? High circulation lifetime
• ? Permeable through tumor leaky vasculature

46 C
37 C
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CAREER Molecularly Directed Assembly of
Patchy Particles Ilona Kretzschmar - The
City College of New York

• Background Molecularly Directed Assembly
• ? development of site-specific particle surface
  modification methods
• ? patchy particles for molecularly directed
  assembly
• ? guidelines for binding energies, particle
  concentrations, and patch sizes
• Results Glancing Angle Metal Evaporation
• ? patch sizes as small as 3.7 of surface
• ? uses shadow effect of particles within layer
• ? patches of different geometry obtainable
• Impact
• ? simple and reproducible method for patch

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