Keyword searching (generally) works best for finding articles on a topic
If you get too many results, try limiting to a particular subject - usually there is a list of subject links on one side of the screen.
The same tricks to help you find books in the catalog, will help you find articles
align* (finds align, aligns, alignment, etc.)
(substrate or scaffold)
adhesion and alignment
Put it all together:
(substrate or scaffold) and align* and "spider silk"