Part II of a two part series discussing the design and operation of a microspectrometer for 3-5 ìm with an integrated micromachined Fabry-Perot filter demonstrating the use of the tunable detector in gas analyzers and spectroscopic applications.

Demonstrated in this article are the benefits of using hydrogen carrier gas for blood alcohol analysis. This alternate carrier gas can provide significant benefits in resolution, speed and costs over the traditionally used helium.

How the SEMI International Standards Program is using industry cooperation to identify and standardize the process gas and liquid chemical purity needs of photovoltaic cell manufacturing

The physics of ultrasonic gas detection, its efficacy and use as a complement to traditional detection technologies.

Beginning with this November/December 2009 issue, G&I will be covering the advances in photovoltaic (PV) technology as it applies to gases and chemicals by adding a special PV section to the magazine (See page 18).