skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method of monitoring crystal growth

Abstract

A system and method are disclosed for monitoring the growth of a crystalline body from a liquid meniscus in a furnace. The system provides an improved human/machine interface so as to reduce operator stress, strain and fatigue while improving the conditions for observation and control of the growing process. The system comprises suitable optics for forming an image of the meniscus and body wherein the image is anamorphic so that the entire meniscus can be viewed with good resolution in both the width and height dimensions. The system also comprises a video display for displaying the anamorphic image. The video display includes means for enhancing the contrast between any two contrasting points in the image. The video display also comprises a signal averager for averaging the intensity of at least one preselected portions of the image. The value of the average intensity, can in turn be utilized to control the growth of the body. The system and method are also capable of observing and monitoring multiple processes. 9 figs.

Inventors:
Publication Date:
OSTI Identifier:
7005335
Patent Number(s):
US 4318769; A
Application Number:
CNN: NAS7-100; PPN: US 6-201042
Assignee:
Mobil Tyco Solar Energy Corp., Waltham, MA (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 27 Oct 1980
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRYSTAL GROWTH; MONITORING; HUMAN FACTORS ENGINEERING; MAN-MACHINE SYSTEMS; VIDEO TAPES; ENGINEERING; MAGNETIC STORAGE DEVICES; MAGNETIC TAPES; MEMORY DEVICES; 360601* - Other Materials- Preparation & Manufacture; 360101 - Metals & Alloys- Preparation & Fabrication; 360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication

Citation Formats

Sachs, E M. Method of monitoring crystal growth. United States: N. p., 1982. Web.
Sachs, E M. Method of monitoring crystal growth. United States.
Sachs, E M. 1982. "Method of monitoring crystal growth". United States.
@article{osti_7005335,
title = {Method of monitoring crystal growth},
author = {Sachs, E M},
abstractNote = {A system and method are disclosed for monitoring the growth of a crystalline body from a liquid meniscus in a furnace. The system provides an improved human/machine interface so as to reduce operator stress, strain and fatigue while improving the conditions for observation and control of the growing process. The system comprises suitable optics for forming an image of the meniscus and body wherein the image is anamorphic so that the entire meniscus can be viewed with good resolution in both the width and height dimensions. The system also comprises a video display for displaying the anamorphic image. The video display includes means for enhancing the contrast between any two contrasting points in the image. The video display also comprises a signal averager for averaging the intensity of at least one preselected portions of the image. The value of the average intensity, can in turn be utilized to control the growth of the body. The system and method are also capable of observing and monitoring multiple processes. 9 figs.},
doi = {},
url = {https://www.osti.gov/biblio/7005335}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 09 00:00:00 EST 1982},
month = {Tue Mar 09 00:00:00 EST 1982}
}