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Strains and stresses in GaN heteroepitaxy – sources and ... - Laytec

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Homebuilt <strong>in</strong>-situ curvature sensor<br />

on an AIX 200/4 RF-S<br />

Curvature measurements<br />

Distance (pixels)<br />

285<br />

280<br />

275<br />

270<br />

265<br />

260<br />

255<br />

250<br />

245<br />

240<br />

heat up<br />

AlN<br />

<strong>GaN</strong><br />

raw data averaged over 1 s<br />

AlN<br />

<strong>GaN</strong><br />

AlN<br />

<strong>GaN</strong><br />

In<strong>GaN</strong><br />

0 2000 4000 6000 8000 10000<br />

Time (s)<br />

<strong>GaN</strong>

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