Determination of the adhesion force between particles and a flat surface, using the centrifuge technique

Salazar‐Banda, Giancarlo R.; Felicetti, Marcos Alceu; Gonçalves, José Antônio Silveira; Coury, José Renato; Aguiar, Mônica Lopes

doi:10.1016/j.powtec.2006.12.011

Cited by 88 publications

(62 citation statements)

References 25 publications

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“…The Weibull and log-normal distributions were further validated in the study by Li et al (2006) which measured the adhesion forces between alumina particles and silica substrates with different coatings. Lognormal distributions were also found in a number of other experimental studies (Lam and Newton, 1992;Louey et al, 2001;Salazar-Banda et al, 2007;Felicetti et al, 2008) involving surfaces with significant roughness. Perni (2010, 2011) numerically and experimentally showed that the adhesion forces between PBT particles and glass and silicone surfaces follow a Gaussian distribution.…”

Section: Methodssupporting

confidence: 53%

Statistical Analysis of Fine Particle Resuspension from Rough Surfaces by Turbulent Flows

You

Wan

2017

Aerosol Air Qual. Res.

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Particle resuspension plays a part in indoor aerosol dynamics and has received increasing attention due to its ability to prolong human exposure to airborne particles. A stochastic model of turbulence-induced particle resuspension from rough surfaces is proposed based on the statistical nature of the process. Deposited fine (micro-or nano-size) particles are generally immersed in the viscous sublayer of the incompressible turbulent boundary layer and are subjected to aerodynamic forces that can be approximated by log-normal distributions due to penetration of turbulent inrushes and bursts into the viscous sublayer. Similarly, the adhesion force between particles and surfaces could be approximated by statistical distributions according to the statistical nature of surface roughness. Three common types of adhesion force distributions, i.e. log-normal, Weibull, and Gaussian distributions, are specifically explored. Predicted resuspension fractions versus free stream velocity are in good agreement with experimental data reported in the literature. Using the proposed stochastic model, influences of various parameters (composite Young's modulus, surface energy, adhesion force distribution, velocity distribution, fluid density, and particle diameter) on the threshold friction velocity (u * 50 ) and friction velocity divergence (Δu * ) are analysed. The information sheds light onto the controlling of the particle resuspension process. The proposed model extends the current capability of modeling particle resuspension by considering different types of adhesion force distributions.

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Section: Methodssupporting

confidence: 53%

Statistical Analysis of Fine Particle Resuspension from Rough Surfaces by Turbulent Flows

You

Wan

2017

Aerosol Air Qual. Res.

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“…The measurement of such interaction forces can also play a crucial role in studying the selectivity of functionalized surfaces in bioanalytics and rapid screening technologies 3 . However, direct measurements of interaction forces with conventional techniques such as centrifuge 4 and the atomic force microscope (AFM) 5 , although insightful, are technically demanding and expensive, and therefore unsuitable for routine use. By virtue of their principle of operation, the acoustic techniques using in-plane shear oscillations, such as the quartz crystal microbalance (QCM) (also known as thickness-shear mode resonator) and shear-horizontal surface acoustic wave (SH-SAW) devices, provide a more convenient way of measuring interaction of the surface with the adsorbed layers.…”

Section: Introductionmentioning

confidence: 99%

Studying adsorbent dynamics on a quartz crystal resonator using its nonlinear electrical response

Ghosh

Ostanin

Seshia

2013

Sensors and Actuators B: Chemical

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Citation: GHOSH, S.K., OSTANIN, V.P. and SESHIA, A.A., 2013. Studying adsorbent dynamics on a quartz crystal resonator using its nonlinear electrical response. Sensors and Actuators B: Chemical, 176, Additional Information:• This is the author's version of a work that was accepted for publication in Sensors and Actuators B: Chemical.Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re- The graphs also present a signature of the surface-particle interaction and could be used to estimate the interaction energy profile. Interestingly, the insights gained from the model help to explain some of the experimental observations with physisorbed streptavidin-coated polystyrene microbeads on quartz resonators reasonably well.

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“…Soltani and Ahmadi (1994) review experimental works based on substrate accelerations and develop an analytical theory of detachment which includes normal and rolling modes. Busnaina and Elsawy (2000) and Salazar-Banda et al (2007) used the centrifugal technique to study particle adhesion due to capillary condensation and particle shape, respectively. And several works provide comparisons of AFM and centrifugal techniques (Mizes et al 2000;Zhou et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Impulse Resuspension with Laser Doppler Vibrometry

Hubbard

Brockmann

Rivera

et al. 2012

Aerosol Science and Technology

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Particle resuspension due to mechanical impulse was studied for spherical polymethylmethacrylate (pmma) particles ranging from 1.7 to 14.4 µm in diameter on titanium dioxide (TiO 2 ) and silicon dioxide (SiO 2 ) wafers. Dry powders were dispersed, electrostatically neutralized, and allowed to deposit under the influence of gravity. Contaminated surfaces were then mechanically excited with a 5 MHz piezoelectric transducer where surface accelerations (∼10 6 m/s 2 ) and resuspension ratios were quantified with laser Doppler vibrometry (LDV) and digital microscopy, respectively. For TiO 2 , experiments were performed over a broad range of relative humidity (25 to 95%) to assess the effects of capillary condensation. Resuspension was a monotonically decreasing function of relative humidity. Existing theories were used to separate data into two adhesion regimes based on capillary bridge formation: van der Waals (vdW) and capillary dominated adhesion. For relative humidity above 60%, resuspension forces were nondimensionalized by the theoretical capillary force. Resuspension data for all particle sizes and relative humidity were described by a single sigmoid function dependent on the dimensionless resuspension force. Below 60% relative humidity, resuspension forces were nondimensionalized by the vdW force calculated with Johnson-Kendall-Roberts adhesion theory. The experimental work of adhesion (pmma-TiO 2 ) was optimized such that the dimensionless resuspension curves, for capillary and vdW forces, had equivalent dimensionless resuspension forces at 50% resuspension. The calculated value, 0.047 J/m 2 , was within the range of values expected from other published works. Resuspension was not observed for particles on SiO 2 substrates. This result was attributed to electrostatic surface charge patches where particle charge and surface resistivities were measured to analyze the relative influence of electrostatic adhesion forces.

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Determination of the adhesion force between particles and a flat surface, using the centrifuge technique

Cited by 88 publications

References 25 publications

Statistical Analysis of Fine Particle Resuspension from Rough Surfaces by Turbulent Flows

Statistical Analysis of Fine Particle Resuspension from Rough Surfaces by Turbulent Flows

Studying adsorbent dynamics on a quartz crystal resonator using its nonlinear electrical response

Experimental Study of Impulse Resuspension with Laser Doppler Vibrometry

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