As a molecular modeler, have you ever wished for a simple yet elegant way to highlight specific regions of your molecular simulations or to boost the clarity of your presentations? The Pulse animation in SAMSON offers a remarkable solution by making molecular nodes progressively appear and disappear, helping you visually emphasize transitions or areas of interest in your models.
Why use the Pulse animation?
The Pulse animation is specifically designed for nodes with transparency attributes such as structural models, visual models, meshes, and labels. If you are building complex visualizations or explaining intricate details in your molecular models, this animation can draw focus to certain parts while reducing visual clutter. It is an invaluable tool for creating clarity in reports, teaching materials, or collaborative efforts.
Adding and Configuring the Pulse Animation
To start using the Pulse animation, follow these simple steps:
- Select the nodes you wish to highlight using the animation. These are the parts that will appear and disappear progressively.
- Go to the Animation panel in SAMSON’s Animator, and double-click the Pulse animation effect.
Once the animation is applied, it involves five keyframes:
- Keyframes 1 to 2: The nodes remain fully transparent.
- Keyframes 2 to 3: The nodes progressively appear, becoming less transparent.
- Keyframe 3: The nodes are fully opaque (transparency is zero).
- Keyframes 3 to 4: The nodes progressively disappear, increasing their transparency.
- Keyframes 4 to 5: The nodes are fully transparent again.
You can adjust the positions of the keyframes to control the timing of each phase of the animation. This flexibility allows you to tailor the visualization to your presentation’s needs.
Fine-Tuning with the Easing Curve
For further refinement, you can modify how the transition parameters are interpolated between keyframes by adjusting the Easing curve. This lets you customize the motion dynamics for a smoother or more dramatic effect.
You can also preview and tweak the settings in the Inspector to achieve the most effective result for your intended audience.

In Action: Visual Examples
To better understand how Pulse works, consider the example below, where a node gradually shifts between transparency and opacity, creating a pulsating visual effect:

Why It Matters
Clear visual communication can make a huge difference when sharing your work in molecular modeling. Whether you’re assisting others in comprehending molecular interactions, preparing compelling presentations, or simply trying to focus on specific areas of your design, Pulse provides an intuitive, visually appealing solution that blends precision and simplicity.
To learn more about the Pulse animation and how it can enhance your molecular visualizations, visit the official documentation page.
SAMSON and all SAMSON Extensions are free for non-commercial use. Download SAMSON at https://www.samson-connect.net.
