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Figure 4
Micro-laser Raman spectra of (a) the Si substrate, (b) a caltrop CuO particle on the Si substrate, (c) the SiN membrane and (d) a caltrop CuO particle on the SiN membrane. Optical micrographs inset into (b) and (d) show the positions of the measurement, indicated by the green light reflected from the excitation laser (wavelength 532 nm). The characteristic Raman modes Ag and Bg are indicated in the spectra of (b) and (d).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 24| Part 3| May 2017| Pages 653-660
https://doi.org/10.1107/S1600577517002314
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