Calculators + Utilities

This page lists a few online calculators that are useful to lab users.

Fabrication Processes & Converters

• Thermal Oxide Calculator (BYU)
• Conversion of Pressure Units (calculatoredge.com)
• Mean Free Path tables (Pfeiffer Vacuum)
• Laser Etch Monitor Simulation in Python

Refractive Indices

• LuxPop.com
• RefractiveIndex.info
• Filmetrics Inc.
• Ioffe Institute
• nk.py (Demis D. John)
  • Functions for returning n (ref. idx.) & k (ext. coeff.) at a specified wavelength.

Material Parameters

• WebElements: Compounds
  • Boiling points of various compounds can tell you how volatile an etch product may be in a reactive ion etch, or whether they need to be wet-etched instead.
• Physical Properties of Semiconductors (Ioffe Institute)

Wet Etching

• Transene Inc. Chemical Compatibility Chart
• A.R. Clawson, "Guide to references on III±V semiconductor chemical etching", 2001
  • Enormous review of published wet etches of many semiconductors and alloys. The only thing it's missing is a hyperlinked table of contents.

General Calculators

• Octave Online Interpreter (online-utility.org)
  • A Matlab-like interface, powered by Python Octave.
• Wolfram Alpha