Oostende, Belgium, ca. 1727 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Nouveau plan de la ville d'Ostende : ville forte du Comté de Flandre celebre par l'octroy de l'empereur pour la navigation aux Indes Orientales. It was published by chez R. & J. Ottens, sur le Nieuwendyk à la Carte du Monde ca. 1727. Scale [ca. 1:3,900]. Covers Oostende, Belgium. Map in French.The image inside the map neatline is georeferenced to the surface of the earth and fit to the Belgian Lambert 1972 coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, drainage, built-up areas and selected buildings, fortifications, ground cover, and more. Relief shown by hachures. Includes index.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Antwerp, Belgium, 1852 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Antwerp = (Antwerpen) (Anvers), drawn by W. B. Clarke ; engraved & printed by B. R. Davies. It was published under the Superintendance of the Society for the Diffusion of Useful Knowledge [by] George Cox, Jan. 1, 1852. Scale [ca. 1:4,700]. Covers Antwerp, Belgium.The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'Belge Lambert 1972' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, railroads, drainage, canals, built-up areas and selected buildings, fortification, ground cover, and more. Relief shown by hachures. Includes inset map: Plan of the Scheldt & the Forts from Antwerp to Lillo, and views: Antwerp from the road to Mechlin Brussels and Louvain (from a print at the British Museum) and A Comparison of the Principal Buildings at Antwerp.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Surface relief grating growth in thin films of mexylaminotriazinefunctionalized glass-forming azobenzene derivatives

Azobenzene-containing materials exhibit various photomechanical properties, including the formation of surface relief gratings (SRG) when irradiated with two interfering laser beams. In a recent study, a novel glass-forming derivative of Disperse Red 1 (DR1) with a mexylaminotriazine group was synthesized in high yield with a simple and efficient procedure, and showed the ability to form high-quality amorphous thin films with a high resistance to crystallization. Irradiation of films of this material yielded SRG with growth rates comparable to other reported azo materials. Herein, a series of closely related molecular glasses containing azobenzene chromophores with various absorption maxima ranging from 410 to 570 nm were synthesized, and their physical and photomechanical properties were studied. All materials studied showed the ability to form stable glassy phases, and irradiation with lasers emitting at various wavelengths allowed to perform a comparative study of SRG growth within a series of analogous chromophores.