Graphene mechanical pixels for Interferometric MOdulator Displays (GIMOD)
| Autor: | Peter G. Steeneken, Herre S. J. van der Zant, Amaia Zurutuza, Dejan Davidovikj, Samer Houri, Santiago J. Cartamil-Bueno, Alba Centeno |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Science General Physics and Astronomy FOS: Physical sciences 02 engineering and technology Applied Physics (physics.app-ph) 01 natural sciences Article General Biochemistry Genetics and Molecular Biology Switching time 0103 physical sciences lcsh:Science 010306 general physics Multidisciplinary Pixel business.industry General Chemistry Physics - Applied Physics 021001 nanoscience & nanotechnology Frame rate Refresh rate Interferometry Modulation Interferometric modulator display Optoelectronics lcsh:Q 0210 nano-technology business Pixel density |
| Zdroj: | Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018) Nature Communications, 9(1) Nature Communications |
| ISSN: | 2041-1723 |
| DOI: | 10.48550/arxiv.1803.01883 |
| Popis: | Graphene, the carbon monolayer and 2D allotrope of graphite, has the potential to impact technology with a wide range of applications such as optical modulators for high-speed communications. In contrast to modulation devices that rely on plasmonic or electronic effects, MEMS-based modulators can have wider tuning ranges albeit at a lower operating frequency. These properties make electro-optic mechanical modulators ideal for reflective-type display technologies as has been demonstrated previously with SiN membranes in Interferometric MOdulator Displays (IMODs). Despite their low-power consumption and performance in bright environments, IMODs suffer from low frame rates and limited color gamut. Double-layer graphene (DLG) membranes grown by chemical vapor deposition (CVD) can also recreate the interference effect like in IMODs as proven with drumheads displaying Newton's rings. Here, we report on the electro-optical response of CVD DLG mechanical pixels by measuring the change in wavelength-dependent reflectance of a suspended graphene drumhead as a function of electrical gating. We use a spectrometer to measure the wavelength spectrum at different voltages, and find a good agreement with a model based on light interference. Moreover, to verify that gas compression effects do not play an important role, we use a stroboscopic illumination technique to study the electro-optic response of these graphene pixels at frequencies up to 400 Hz. Based on these findings, we demonstrate a continuous full-spectrum reflective-type pixel technology with a Graphene Interferometric MOdulator Display (GIMOD) prototype of 2500 pixels per inch (ppi) equivalent to more than 12K resolution. Comment: 13 pages, 4 figures |
| Databáze: | OpenAIRE |
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