Figure 3: Raman spectroscopy and AFM image. | Nature Communications

Figure 3: Raman spectroscopy and AFM image.

From: Highly tensile-strained Ge/InAlAs nanocomposites

Figure 3

(a) Raman spectra of Ge wafer (black), Ge/In0.52Al0.48As metastable alloy (red), Ge/In0.52Al0.48As nanocomposite (blue), and Ge/In0.76Al0.24As nanocomposite (magenta) taken via 633 nm laser. Clear Raman shifts of Ge-Ge peaks are observed, showing tensile strain in the Ge nanostructures. (b) 250 × 250 nm2 AFM image of Ge nanosheet sample showing surface depressions corresponding to the size and density observed in TEM. Scale bar, 50 nm.

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