In molecular modeling, visualizing dynamic behaviors is often crucial for a deeper understanding of molecular systems. Animations can significantly enhance your presentation, but many modelers struggle to create smooth and accurate motion sequences. If you’re a SAMSON user wondering how to bring molecular systems to life with seamless motion, this blog post is for you.
Adding a New Keyframe
Keyframing is one of the core techniques for creating animations in SAMSON. A keyframe allows you to lock specific positions of atoms at a selected point in time. By defining multiple keyframes and their atomic positions, SAMSON can smoothly interpolate the motion between them.
Here’s how you can create and manipulate keyframes for molecular animations:
- On the Animation panel, position the playhead at the frame where you want to add a new keyframe.
- Click on the animation track at the desired frame. The keyframe will be created here.
- Move the atoms into their desired new positions. These positions will now be recorded and stored in the keyframe.
It’s as easy as that. By adding more keyframes along the timeline, you can choreograph sophisticated animations that unveil the molecular dynamics of your system.
Edit Keyframes With Ease
SAMSON makes it equally simple to adjust your keyframes. If you wish to tweak an existing animation sequence, you can:
- Drag keyframes to new positions along the timeline to adjust the timing of the motion.
- Right-click on any keyframe and select Remove keyframe if necessary.
This flexibility ensures you can modify animations without starting from scratch, saving time and effort as you iterate through your designs.
Enhanced Precision with Advanced Controllers
If you’d like to refine molecular motion using tools beyond the default animation controllers, you have options. For example, you can:
- Hide the Move atoms animation controllers by unchecking them in the Document View.
- Utilize other editors like the Move editors or the Twister editor to perform transformations on your system.
Once those changes are complete, you can simply add a new keyframe in the animation track to preserve the updated positions.

Fine-Tune Motion Properties
For further refinement, explore how SAMSON handles parameter interpolation between frames. You can adjust settings like the Easing curve to make the transitions smoother or give them a specific motion profile. Add or disable smoothing effects to produce exactly the visual flow you need.

Why Utilize Keyframes?
Animations aren’t just visually appealing—they’re practical tools for scientific understanding. Whether you’re showcasing a nanotube twist or simulating molecular dynamics, keyframes enable you to depict intricate atomic movements with precision and control. Once you’ve mastered keyframes in SAMSON, the potential for creating compelling molecular animations is truly expansive.
To dive even deeper into creating molecular animations with SAMSON, visit the official documentation page: Move atoms animation in SAMSON.
SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON at SAMSON Connect.
