Do the twist to get fit

Pauline Rigby ()
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Pauline Rigby: Oxford University

Nature, 1997, vol. 388, issue 6637, 29-30

Abstract: The substrate problem is a big one for the optoelectronics industry. It is only possible to grow good quality material, without any of the defects that prevent light emission, if a substrate can be found with an almost identical atomic spacing to the layer grown on it. For some material systems there is no lattice-matched substrate available. But by adding a twist, a gallium arsenide substrate can be made stretchy — effectively a universal substrate.

Date: 1997
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DOI: 10.1038/40293

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