Find thousands of books, manuscripts, visual materials and unpublished archives from our collections, many of them with free online access.
Search for free, downloadable images taken from our library and museum collections, including paintings, illustrations, photos and more.
- Annie Cavanagh
Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
You can use this work for any purpose, as long as it is not primarily intended for or directed to commercial advantage or monetary compensation. You should also provide attribution to the original work, source and licence.
Creative Commons Attribution Non-Commercial (CC BY-NC 4.0) terms and conditions https://creativecommons.org/licenses/by-nc/4.0
Selected images from this work
About this work
False-coloured scanning electron micrograph of caffeine crystals. Caffeine is a bitter, crystalline xanthine alkaloid that acts as a stimulant drug. Beverages containing caffeine, such as coffee, tea, soft drinks, and energy drinks, enjoy great popularity, and 90% of adults consume caffeine daily. Wellcome Image Awards 2012.