Fig. 5: Compact spectrometer and SERS characterization enabled by SENTL. | Microsystems & Nanoengineering

Fig. 5: Compact spectrometer and SERS characterization enabled by SENTL.

From: High-fidelity and clean nanotransfer lithography using structure-embedded and electrostatic-adhesive carriers

Fig. 5

a Photograph of rainbow-like stripe image formed by dispersing and focusing the light from a white LED using the transferred nanogratings on a convex lens. b Grayscale image of the stripe captured by a monochromatic CMOS detector. c Plot that maps the pixel position to the calibrated wavelength. d Reconstructed spectrum obtained from the grayscale image. e Reference spectrum measured by a commercial spectrometer. f Schematic diagram and g SEM image of transferred Au nanodisks on monolayer graphene. h Raman spectra showing an enhancement in the Raman signatures of Au-covered graphene compared to that of bare graphene under 785-nm excitation. Scale bars: 300 nm (g), and 1 cm (a)

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