A Theoretical and Experimental Study of Surface Forces in Adhesion of Particles to Thin Films

31 May 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...

Basic Forces in Particle Adhesion

31 May 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...

Discrete Element Method (DEM) Course Module

31 May 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...

Discussion on Hamaker Constant

31 May 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...

Hamaker Constants in Integrated Circuit Metallization

31 May 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,...

High Shear Mixer

31 May 2024 | Tools

Analyze particles as they move through a high shear mixer

Hopper Flow Discharge

31 May 2024 | Tools

DEM simulation of the discharge of particles from a hopper

Hopper Segregation

31 May 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...

Inter- and Intra- Tablet Coating Variability

31 May 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...

Particle Adhesion

31 May 2024 | Tools

Particle Adhesion

Particle and Thin Film Adhesion

31 May 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...

ParticleVis: A Tool for DEM Particle Visualization

31 May 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...

PSL DEM Lecture 01: Motivation

31 May 2024 | Teaching Materials

The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 01: Motivation.

PSL DEM Lecture 02: Hard Particle Collision Modeling

31 May 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

PSL DEM Lecture 03: Hard Particle Contact Detection

31 May 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.

PSL DEM Lecture 06: Introduction to Soft-Particle DEM and Normal Contact Force Models - Part I

31 May 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.

PSL DEM Lecture 07: Normal Contact Force Models - Part II

31 May 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.

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.

PSL DEM Lecture 11: Coarse Contact Detection

31 May 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.

PSL DEM Lecture 13: 3D Rotations

31 May 2024 | Teaching Materials

The Particulate Systems Laboratory at Purdue University presents the Discrete Element Modeling (DEM) Short Course Series. This is Lecture 13: 3D Rotations.