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A Theoretical and Experimental Study of Surface Forces in Adhesion of Particles to Thin Films
16 Aug 2024 | Publications
The interactions between micron- and nano-particles and rough surfaces are of great importance and have numerous applications in surface science and biotechnology. It is essential to have estimates of surface/intermolecular forces between interacting bodies to describe and to manipulate the...
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Basic Forces in Particle Adhesion
16 Aug 2024 | Online Presentations
Particle adhesion to surfaces is important in a wide range of industrial applications. This brief presentation is designed to provide an introduction to the forces that influence particle adhesion in air or liquid environments. It is not designed to provide information at great depth or...
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Discrete Element Method (DEM) Course Module
16 Aug 2024 | Courses
The DEM course module was created by Carl Wassgren of the Particulate Systems Laboratory (PSL) at Purdue University. The series consists of slides and videos that will familiarize you with the basics of DEM. Discrete Element Method has been applied to analyze and predict flow behaviour in a wide...
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Discussion on Hamaker Constant
16 Aug 2024 | Publications
The Hamaker constant is a force constant used for describing the van der Waals (vdW) force. The magnitude of the Hamaker constant reflects the strength of the vdW force between two particles, or between a particle and a substrate. It depends on the material properties of both the interacting...
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Drug Delivery Experiments
16 Aug 2024 | Downloads
Attached are five files detailing four separate experiments that are designed to be used in an undergraduate curriculum. The alginate bead experiment utilizes an alginate hydrogel drug delivery system to affect the rate at which a dye or protein is released. The lozenge experiment is a drug...
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Hamaker Constants in Integrated Circuit Metallization
16 Aug 2024 | Publications
A new method for determining Hamaker constants was examinedfor materials of interest in integrated circuit manufacture. Anultra-high vacuum atomic force microscope and an atomic force microscopeoperated in a nitrogen environment were used to measurethe interaction forces between metals,...
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High Shear Mixer
16 Aug 2024 | Tools
Analyze particles as they move through a high shear mixer
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Hopper Flow Discharge
16 Aug 2024 | Tools
DEM simulation of the discharge of particles from a hopper
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Hopper Segregation
16 Aug 2024 | Animations
The Particulate Sciences Laboratory at Purdue University investigates the mixing and segregation of binary and multi-component granular materials. Solids mixing, also known as blending, is a common processing operation used in the manufacture of pharmaceutical products. The intent of mixing...
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Inter- and Intra- Tablet Coating Variability
16 Aug 2024 | Animations
Tablets are coated for a number of reasons, the most important of which is controlling the release profiles and bioavailability of the active pharmaceutical ingredient. The amount of coating on the surface of a tablet is critical to the effectiveness of the oral dosage form.Tablets are usually...
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Particle Adhesion
16 Aug 2024 | Tools
Particle Adhesion
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Particle and Thin Film Adhesion
16 Aug 2024 | Series
The adhesion of micron and sub-micron scale particles to surfaces is of tremendous interest in a wide range of industrial and civilian applications. We measure directly the adhesion of particles to surfaces using atomic force microscopy and develop experimentally-validated, science-based models...
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ParticleVis: A Tool for DEM Particle Visualization
16 Aug 2024 | Downloads
ParticleVis is a visualization tool specialized for loading and exploring particulate simulation data. It contains a set of features that enables powerful and useful visualizations of particle simulations to be quickly generated. Support is provided for visualization of hundreds of thousands of...
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PSL DEM Lecture 01: Motivation
16 Aug 2024 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 01: Motivation.
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PSL DEM Lecture 02: Hard Particle Collision Modeling
16 Aug 2024 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 02: Hard Particle Collision Modeling
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PSL DEM Lecture 03: Hard Particle Contact Detection
16 Aug 2024 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 03: Hard Particle Contact Detection.
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PSL DEM Lecture 06: Introduction to Soft-Particle DEM and Normal Contact Force Models - Part I
16 Aug 2024 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 06: Introduction to Soft-Particle DEM and Normal Contact Force Models - Part I.
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PSL DEM Lecture 07: Normal Contact Force Models - Part II
16 Aug 2024 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 07: Normal Contact Force Models - Part II.
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PSL DEM Lecture 09: Tangential Contact Force Models
15 May 2008 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 9: Tangential Contact Force Models.
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PSL DEM Lecture 11: Coarse Contact Detection
16 Aug 2024 | Teaching Materials
The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 11: Coarse Contact Detection.