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

20 May 2024 | Publications | Contributor(s): Carl Wassgren

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...

Computer Modeling of Evaporation Lab - Student and Instructor's Version

20 May 2024 | Teaching Materials | Contributor(s): Carl Wassgren

This is one of a set of experiments designed for lower level undergraduate courses that incorporates novel thin films for drug delivery. The focus of the experimental set is to introduce pharmaceutical concepts to undergraduates while also incorporating general engineering educational objectives....

Design of Experiments with Thin Films Lab #1

20 May 2024 | Teaching Materials | Contributor(s): Carl Wassgren

This is one of a set of experiments designed for lower level undergraduate courses that incorporates novel thin films for drug delivery. The focus of the experimental set is to introduce pharmaceutical concepts to undergraduates while also incorporating general engineering educational objectives....

Design of Experiments with Thin Films Lab #2

20 May 2024 | Teaching Materials | Contributor(s): Carl Wassgren

This is one of a set of experiments designed for lower level undergraduate courses that incorporates novel thin films for drug delivery. The focus of the experimental set is to introduce pharmaceutical concepts to undergraduates while also incorporating general engineering educational objectives....

Discrete Element Method (DEM) Course Module

20 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...

High Shear Mixer

20 May 2024 | Tools

Analyze particles as they move through a high shear mixer

Hopper Flow Discharge

20 May 2024 | Tools

DEM simulation of the discharge of particles from a hopper

Hopper Segregation

20 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...

Hydroproperties of Dissolvable Strips Lab - Student and Instructor's Versions

20 May 2024 | Teaching Materials | Contributor(s): Carl Wassgren

This is one of a set of experiments designed for lower level undergraduate courses that incorporates novel thin films for drug delivery. The focus of the experimental set is to introduce pharmaceutical concepts to undergraduates while also incorporating general engineering educational objectives....

Initial vs. Final Height of Dissolvable Strips - Student and Instructor's Versions

20 May 2024 | Teaching Materials | Contributor(s): Carl Wassgren

This is one of a set of experiments designed for lower level undergraduate courses that incorporates novel thin films for drug delivery. The focus of the experimental set is to introduce pharmaceutical concepts to undergraduates while also incorporating general engineering educational objectives....

Inter- and Intra- Tablet Coating Variability

20 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 and Thin Film Adhesion

20 May 2024 | Series | Contributor(s): Carl Wassgren

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

20 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

20 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

20 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

20 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

20 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

20 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

20 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.