Friction-force plots at different applied loads from the molecular dynamics lesson
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Guest lecture · UC Merced

Molecular Dynamics Warm-up

MSE 119 / MBSE 219 / PHYS 246 · February 2025 · 50 minutes

An interactive computational lesson that moved from Newton’s equations to working time-integration algorithms and a materials-scale friction example.

How do we turn a force law into a stable, useful trajectory of atoms?

  • Newtonian dynamics
  • Euler integration
  • Verlet and Velocity Verlet
  • Timestep accuracy
  • LAMMPS
  • MoS₂ friction

How the class unfolded

01

Activate

A short pre-class assessment surfaced students’ starting ideas about motion, forces, and numerical integration.

02

Build

Students compared Euler, Verlet, and Velocity Verlet, connecting each step to position, velocity, and force updates.

03

Apply

A friction example translated the algorithms into an atomistic materials problem using sliding MoS₂ interfaces.

How learning was made visible

Before class

Concept checkPre-class questions established the baseline.

During class

Live codingStudents reasoned through timestep and update choices.

After class

Post assessmentA follow-up check revisited the core concepts.

Student-response files are summarized here but are not published as downloads, even when responses appear anonymous.

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