Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
Explanation: I am afraid, there is no semiconductor which would expand (except of the semi-c. market recently, maybe in future too..)
So, it is the test strip that changes its length when measuring something in the semi-c.
Therefore my above translation.
Supported by Google search on Halbleiterdehnung and the like ...