Search results for " MBE"
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High Performance Solar Blind Detectors based on AlGaN grown by MBE and MOCVD
2004
ABSTRACTSolar blind detectors based on AlGaN grown by Molecular Beam Epitaxy and Metal Organic Vapor Phase Epitaxy have been fabricated and characterized. Metal Semiconductor Metal (MSM) detectors and vertical Schottky detectors have been realized, with a design that allows back side illumination. The growth was optimized in order to improve the layer quality, avoid crack formation, and provide the best detector performance. The technological process was also optimized in order to reduce the dark currents and improve the spectral rejection ratio, which is a key factor for solar blind detection. As a result, a rejection ratio of 5 decades between the UV (below 300 nm) and 400 nm, and a steep…
Dominio razzista ed etica del passante. L'antropologia critica di Achille Mbembe
2020
This paper discusses Achille Mbembe’s critique of racial segregation taken as the descriptive and theoretical ground for a critical anthropology. Mbembe’s most important works On the Postcolony (2000), Critique de la Raison Nègre (2013), and Politiques de l’intimité (2016) are read as a coherent system aimed at unfolding the philosophical meaning of different forms of racial segregation. Race is outlined as a principle of separation whose broader meaning lies in forcing the multi-layered human experience into rigid categories, thereby achieving the objectifying of humans. Mbembe’s books also show the sharpening of a peculiar methodological approach aimed at reconciling a universal philosoph…