Crystal puller
- Circa 1964 – 1968
Used to create silicon ingots for use in the semiconductor industry, this crystal puller consists of two main parts, the furnace and the puller: the furnace is cylindrical and located at the bottom of the instrument, it sits on a square base that houses the electrical components, and it has a thick outer wall and clamps located at the bottom of the wall; the puller assembly extends above the furnace and has a hydraulic "lift" that gently pulls the furnace wall and the contents vertically.
Bob Lorenzini of Elmat had a race car in mind when he designed this furnace. He wanted to be able to take it apart, harvest the crystal, load it back, and start growing the next crystal as quickly as possible. An idle furnace meant lost profits, while a busy one gave Lorenzini's company an edge in a competitive business.
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Cite as
Science History Institute. Crystal Puller. Photograph, 2017. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/6108vc00z.
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