Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

NanoFab Tool: Inductively Coupled Plasma (ICP) Metal Etcher: Oxford PlasmaPro 100 Cobra

Oxford metal PlasmaPro 100 Cobra etcher

Photograph of the Oxford metal PlasmaPro 100 Cobra etcher.

The Oxford Metal PlasmaPro 100 Cobra etcher is a chlorine-based plasma etch system that provides users with selective etching of metals. The tool is equipped with a temperature controlled electrode to help users tailor their etch feature profiles. The manual load system can accommodate substrates ranging from 200 mm diameter wafers down to small pieces.

Specifications/Capabilities

  • Inductively coupled plasma (ICP) power source: up to 3000 W
  • Radio frequency (RF) power source: up to 600 W
  • Electrode temperature range: -150 °C to 400 °C.
  • Process Gases: Ar, He, N2, O2, BCl3, CF4, CH4, Cl2, H2, HBr, SF6 and SiCl4
  • Controlled etching of Al, Cr, and other metals.

Usage Information

Supported Sample Sizes

  • Maximum wafer diameter: 200 mm.
  • Small pieces supported: Yes.

Typical Applications

  • Optical device fabrication.
  • General device patterning.
Created May 13, 2025
Was this page helpful?