Full text access available via ASTM from 1972 to 2005 (volume 17 - 50). Articles published from 2006 (volume 51 - present) can be accessed via Wiley Online Library.
(If prompted with login page, please choose "Academic Access", select Cranfield University)
A free digital archive of medical and biomedical science journal literature. Part of the US National Institutes of Health. Allows searching using Medical Subject Headings (MeSH).
The most extensive resource available on optics and photonics, providing access to technical papers from their journals and conference proceedings from 1990 - present.