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All posts by Chien Liu

How to Simulate the Carrier Dynamics in Semiconductor Devices

December 27, 2018

Learn how to simulate carrier dynamics in semiconductor devices with 2 examples: reverse recovery and forward recovery PIN rectifier models.

How to Model the Interface Trapping Effects of a MOSCAP

December 18, 2018

Looking to analyze interface trapping effects in a MOSCAP? Learn how to use a feature in the Semiconductor Module that enables you to add charging and carrier capture/release effects to a model.

Simulating the Tunneling Current Across a Graded Heterojunction

October 29, 2018

Interested in semiconductor design? Get an intro to the theory behind quantum tunneling as well as a demonstration of simulating the tunneling current across a graded heterojunction.

Self-Consistent Schrödinger-Poisson Results for a Nanowire Benchmark

October 18, 2018

This benchmark model of a GaAs nanowire validates the Schrödinger-Poisson Equation multiphysics interface, which is useful for modeling systems with quantum-confined charge carriers.

Computing the Band Gap in Superlattices with the Schrödinger Equation

May 31, 2017

You can easily compute the effective band gap for a superlattice structure by using a predefined Schrödinger Equation interface and building a simulation application.

How to Solve for the Brachistochrone Curve Between Points

October 20, 2015

See how to use built-in mathematical expressions, the Optimization Module, and COMSOL Multiphysics® to solve for the brachistochrone curve.

How to Implement a Point Source with the Weak Form

August 24, 2015

Learn how to implement a point source with the weak form in the COMSOL® software. Part 2 of a blog series discussing the weak formulation.

Implementing the Weak Form with a COMSOL App

April 16, 2015

First we implement the weak form equation and examine its matrices. Then we create a simulation app that displays all relevant matrices at once, arranged logically on one screen.