Fig. 1
From: Graphene mechanical pixels for Interferometric Modulator Displays
Electro-optical measurements with a colorimetry setup of a graphene drumhead of 20 μm in diameter. a Artist impression of a deformed CVD DLG drumhead showing Newton’s rings upon white light illumination. b The membrane can be actuated electrostatically while its reflectance spectrum is measured with a spectrometer and a calibrated camera. The white light source is either a halogen lamp (for spectral studies) or a white LED synchronized to the membrane electrical control (for stroboscopic studies). c At different voltages, the reflectance spectrum peak of the overall membrane shifts from 580 nm to 510 nm in a controlled and reproducible manner. Black lines are the theoretical spectral reflectance obtained from Eq. (1)
