RHEED, From First Principles
This is not a visual approximation.
It is a physically grounded, real-time simulation of RHEED—built from first principles and rendered at up to 30 frames per second.
Dynamic, Not Static
Most “simulations” are precomputed images.
Pulse generates RHEED patterns dynamically:
- Frame-by-frame evolution
- Real-time response to growth conditions
- Continuous surface state updates
You are not viewing snapshots.
You are watching growth unfold.
Physics-Driven Modeling
The simulation captures key surface phenomena:
- Zincblende (ZB) and Wurtzite (WZ) structures
- Surface reconstructions
- Kikuchi line formation
- Metallic bilayer intensity modulation
- Oscillations during growth
- Roughness effects (including early-stage 3D features / QDs)
All derived from underlying physical models—not visual guesswork.
Coupled to Growth Conditions
RHEED does not exist in isolation.
Pulse links simulation directly to process parameters:
- Cell temperatures
- Flux ratios and combinations
- Growth modes and transitions
A built-in growth simulator drives the surface state, which in turn drives the diffraction pattern.
Cause and effect—connected.
A Tool for Understanding
This is more than visualization.
It enables:
- Hypothesis testing without hardware
- Operator training in a safe environment
- Exploration of growth regimes before running experiments
You can see why a pattern forms—not just that it does.
Why It Matters
RHEED is inherently dynamic.
Until now, simulation has not been.
Pulse closes that gap—bringing real-time, physics-based RHEED simulation into the workflow.
Bizmuth 