For molecular modelers and researchers, achieving visually intuitive presentations of molecular models can sometimes be challenging. Elegant animations that highlight specific molecular interactions or changes over time often require an intuitive approach to transparency and visibility. This is where SAMSON’s Pulse animation stands out as an essential tool for molecular visualizations.
The Pulse animation is designed to help you emphasize key aspects of your molecular models by allowing selected nodes, such as structural models, meshes, or labels, to progressively appear and disappear. This can be particularly useful in presentations where clarity of focus is critical or when you want to draw attention to certain regions or properties of a molecule.
The Basics of Pulse Animation
The Pulse animation works by leveraging the transparency attribute of nodes. Here’s how it operates step by step:
- Keyframes 1 to 2: The nodes are initially set to be fully transparent.
- Keyframes 2 to 3: The nodes progressively appear as their transparency decreases.
- Keyframe 3: The nodes become fully visible, reaching total opacity.
- Keyframes 3 to 4: The nodes begin to progressively disappear as transparency increases.
- Keyframes 4 to 5: The nodes return to being fully transparent.
This cyclical behavior can serve as an efficient way to highlight transition states or recurring changes in molecular dynamics.
Integrating the Pulse Animation
Adding a pulse animation in SAMSON is straightforward. Follow these steps:
- Select the nodes of interest—the ones you want to be animated. These could be structural models, labels, or even meshes.
- Navigate to the Animation panel inside SAMSON’s Animator interface.
- Double-click the Pulse animation effect to apply it to the selected nodes.
Once applied, you can adjust the position of the keyframes to tailor the flow of visibility transitions to your needs. This flexibility ensures you have control over when and how the selected nodes are showcased.
Fine-Tune with Easing Curves
For those looking to achieve even greater customization, the Pulse animation allows you to modify the interpolation of parameters between keyframes using an Easing curve. This enables smooth transitions and allows users to design animations with a natural and visually appealing rhythm.
Why Use Pulse Animation?
The Pulse animation is perfect for molecular researchers or professionals presenting results visually, especially when clarity of specific transitions matters. For example, it can be used to:
- Highlight ligand binding processes in a protein structure by focusing on specific areas.
- Visually emphasize dynamic changes during molecular simulations.
- Create educational visualizations that cycle through structural highlights to guide students or colleagues.
In essence, the Pulse animation enriches presentations by providing clarity while maintaining engagement, making it a must-have tool in the toolkit of any molecular designer.
For a demonstration of how Pulse works and to explore its features further, check out the complete documentation here.

Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON at https://www.samson-connect.net.
