Raman Spectra of Si Nanodisks

Raman spectra were taken under a microspectroscopic system based on an inverted optical microscope (NTEGRA Spectra, NT-MDT)^{56 (link)}. Briefly, Si nanodisks were excited using linearly polarized 532-nm laser beams using an oil immersion objective (1.4 NA, ×60, Olympus). The resulting Raman signal with both Stokes and anti-Stokes lines was collected using the same objective, passed through a notch filter, and focused into the spectrometer with a cooled CCD (iDdus, Andor). Raman spectra were recorded with an acquisition time of 1 s.

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Zhang T., Che Y., Chen K., Xu J., Xu Y., Wen T., Lu G., Liu X., Wang B., Xu X., Duh Y.S., Tang Y.L., Han J., Cao Y., Guan B.O., Chu S.W, & Li X. (2020). Anapole mediated giant photothermal nonlinearity in nanostructured silicon. Nature Communications, 11, 3027.

Publication 2020

NTEGRA Spectra

Immersion Optical microscope

Corresponding Organization :

Other organizations : Jinan University, Collaborative Innovation Center of Quantum Matter, Peking University, Nankai University, National Taiwan University

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Variable analysis

independent variables

Laser wavelength (532 nm)
Laser polarization (linearly polarized)

dependent variables

Raman spectra (including Stokes and anti-Stokes lines)

control variables

Objective lens (oil immersion, 1.4 NA, ×60, Olympus)
Acquisition time (1 s)

controls

Positive control: None specified
Negative control: None specified

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