Research News

Growing Crystals With a Twist

See allHide authors and affiliations

Science  18 Apr 1997:
Vol. 276, Issue 5311, pp. 356
DOI: 10.1126/science.276.5311.356

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


SAN FRANCISCO-- Growing a defect-free crystal on a supporting substrate for computer chips is notoriously difficult: Mismatches between the atomic lattice pattern of the crystal and substrate causes strain to build up, triggering cracks in the crystal. But now researchers have found a way to ease the strain. At the Materials Science Research meeting here 2 weeks ago, scientists reported that a thin, flexible film sandwiched between the two layers will absorb the growing strain, fracturing instead of the crystal. The findings could open the door to higher performance computer chips and new optoelectronic devices, such as more sensitive infrared detectors.