Search results 15219 items matching your search terms. Filter the results Item type Select All/None Page Folder Event Collection GLD Company New items since Yesterday Last week Last month Ever Sort by relevance date (newest first) alphabetically Figure 4: Cross-section TEM data from a NI overgrown at HT with a low V/III ratio. TDs incline to become perpendicular to high-index facets of the NI. Located in media Figure 3: AFM data illustrating the NI density for a) sample A and b) sample B. The overgrowth of sparse NIs can result in formation of new islands (c). Using increased reactor pressure the formation of new islands during HT overgrowth can be suppressed (d). All the scans are 10 μm × 10 μm. Located in media Figure 2: Model results for TD density reduction in redirection reaction layer structure: (a) relative TD density for structures with initial density ρ0 = 1010cm-2 and representative values for the parameter ρ = 0.5 (1), 1 (2), 2 (3); (b) absolute TD density in case ρ = 1 and various initial densities ρ0=1010 (1), 109 (2), 108 (3) cm-2. For all plots the dislocation reaction parameter κ = 100 nm. The total layer thickness includes both redirection and reaction parts. Located in media Figure 1: Schematic of cross-sectional view of the growing GaN layer: (a) stage I – inclination of TDs during growth; dashed line represents partially coalesced islands with TDs terminating at bottoms of grooves; at the interface TDs close up and form a misfit dislocation (MD); (b) stage I – optional filling of grooves with mask material to enhance the probability for TD inclination; (c) stage II – regrowth step with flattened surface and TD reactions. Located in media Gertrude Neumark Rothschild, Howe Professor Emerita of Materials Science and Engineering at Columbia University (Img. courtesy of Columbia University). Located in media Total consumption of LEDs reached 63 billion units in 2009, up from 57 billion in 2008, and will grow dramatically until 2013. Located in media IMS Research also found a significant variation in the price of these lamps by region. Germany has the most expensive lamps, priced at $70, while in Taiwan; equivalent lamps are priced at $19 Located in media Lights of America - Accent LED Light Bulb - Inside. Located in media Lights of America - Accent LED Light Bulbs. Located in media Lights of America - Accent LED Light Bulb. Located in media < Previous 10 items 1 ... 1267 1268 1269 1270 1271 1272 1273 ... 1522 Next 10 items > Subscribe to an always-updated RSS feed.
