A5042761755- Fluid Dynamics and Thin Films
- Rheology and Fluid Dynamics Studies
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics and Turbulent Flows
- Granular flow and fluidized beds
- Particle Dynamics in Fluid Flows
- Atmospheric aerosols and clouds
- Nonlinear Dynamics and Pattern Formation
- Dental materials and restorations
- Military Defense Systems Analysis
- Surfactants and Colloidal Systems
- Urban Heat Island Mitigation
- Advanced Measurement and Detection Methods
- Guidance and Control Systems
- Lattice Boltzmann Simulation Studies
- Material Dynamics and Properties
- Mechanical and Optical Resonators
- Air Quality Monitoring and Forecasting
- Characterization and Applications of Magnetic Nanoparticles
- Cell Image Analysis Techniques
- Digital Holography and Microscopy
- Nanofabrication and Lithography Techniques
- Dental Research and COVID-19
- Plant Surface Properties and Treatments
- Minerals Flotation and Separation Techniques
University of California, Los Angeles
2013-2019
Duke University
2018-2019
Creighton University
2017-2019
Harvey Mudd College
2010
Cornell University
2006
Rapid, accurate and high-throughput sizing quantification of particulate matter (PM) in air is crucial for monitoring improving quality. In fact, particles with a diameter ≤2.5 μm have been classified as carcinogenic by the World Health Organization. Here we present field-portable cost-effective platform using computational lens-free microscopy machine-learning. This platform, termed c-Air, also integrated smartphone application device control display results. mobile rapidly screens 6.5 L 30...
The purpose of this study was to evaluate whether different enamel etching methods with reduced times would improve the bonding effectiveness universal adhesives.Three methods, phosphoric acid ester monomer (PPM) etching, (PPA) and polyalkenoic (PLA) three adhesives, G-Premio Bond (GP), Prime&Bond elect (PE), Scotchbond Universal Adhesive (SU), were evaluated. Initial bond strengths fatigue adhesives ground etched for less than one, five, 10, 15 seconds using determined. bonded specimens...
Mucosal seal formation around dental abutments is critical to the successful integration of implants into human oral cavity. No information exists for how clinically relevant polishing procedures computer-aided design and manufactured (CAD/CAM) zirconia affects cellular responses important mucosal formation. CAD/CAM was divided four groups utilizing commercial heads: control, coarse, coarse plus medium, medium fine. Surfaces were analyzed with scanning electron microscopy (SEM), atomic force...
Despite its efficacy in producing well-ordered, periodic nanostructures, the intricate role multiple parameters play solvent vapor annealing has not been fully established. In a thin polymer film is exposed to of solvent(s) thus forming swollen and mobile layer direct self-assembly process at nanoscale. Recent developments both theory experiments have directly identified critical that govern this process, but controlling them any systematic way proven non-trivial. These include pressure,...
A viscous suspension of negatively buoyant particles released into a wide, open channel on an incline will stratify in the normal direction as it flows. We model early dynamics this stratification under effects sedimentation and shear-induced migration. Prior work focuses behaviour after equilibration where bulk either separates two distinct fronts (settled) or forms single, particle-laden front (ridged), depending whether initial concentration exceeds critical threshold. From past...
The geometry of a MEMS tuning fork resonator was optimized using bio-inspired binary particle swarm optimization (BPSO) technique in order to reduce energy dissipation from thermoelastic (TED). combines fundamental physics with algorithms navigate the complicated design space that arises multiphysical problems. Fully-coupled thermomechanical simulations were used for Q <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">TED</sub> , which is quality...
SUMMARY Some 200 surface-tension determinations have been made on 107 single-salt melts using eight experimental techniques. From a consideration of the difficulties, such as inconvenience visual observation melt, corrosive nature and volatilization condensation salt vapors apparatus, most versatile method recognized to be applicable these molten systems at elevated temperatures is maximum bubble pressure, by which 75% total salts were made. Other methods, in descending percentages...
Lensfree computational microscopy and machine learning enable a field-portable cost-effective platform for high-throughput accurate quantification of particulate matter (PM). Spatio-temporal mapping using this device reveals increased PM concentrations >7km away from LAX airport.
We consider flow of a thin film on an incline with negatively buoyant particles. derive one-dimensional lubrication model, including the effect surface tension, which is nontrivial extension previous model (Murisic et al 2013 J. Fluid Mech. 717 203–31). show that in form high order derivatives, not only regularizes as diffusion, but also modifies fluxes. As result, it leads to different stratification particle concentration along direction perpendicular motion fluid mixture. The resulting...
Forest fires are a major source of particulate matter (PM) air pollution on global scale. The composition and impact PM typically studied using only laboratory instruments extrapolated to real fire events owing lack analytical techniques suitable for field-settings. To address this similar field test challenges, we developed mobilemicroscopy- machine-learning-based quality monitoring platform called c-Air, which can perform sampling microscopic analysis aerosols in an integrated portable...
Numerical simulations of lubrication models provide clues for experimentalists about the development wave structures in thin liquid films. We analyze numerical a model an inclined film modified by Marangoni forces due to thermal gradient and additional localized forcing heating substrate. results can be explained through connections theory hyperbolic conservation laws predicting fronts from Marangoni-driven films without forcing. demonstrate how variety profiles, such as gaussian,...
Forest fires are a major source of particulate matter (PM) air pollution on global scale. The composition and impact PM typically studied using only laboratory instruments extrapolated to real fire events owing lack analytical techniques suitable for field-settings. To address this similar field test challenges, we developed mobile-microscopy machine-learning-based quality monitoring platform called c-Air, which can perform sampling microscopic analysis aerosols in an integrated portable...