This image is not available for purchase in your country.

False-colour SEM of caffeine crystals

False-colour SEM of caffeine crystals

A600/0733

Rights Managed

This image is not available for purchase in your country.

Please contact your Account Manager if you have any query.

Credit

DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY

Caption

False-colour scanning electron micrograph of anhydrous caffeine crystals (1,3,7- trimethylxanthine). They were produced by sublimation, that is, by heating the solid until it is vapourised, then condensing the vapour. This drives water out of the structure resulting in anhydrous crystals. Examples of twinning can be seen here, where crystals at different orientations interpenetrate producing cross shapes. Caffeine stimulates the central nervous system. It is often contained in analgesic preparations with aspirin or codeine, and it is a diuretic. It occurs in coffee beans, tea leaves & cola nuts. Magnification: x240 at 6x4.5cm size.

Release details

Model release not required. Property release not required.

 {{ i.shot_duration ? i.shot_duration + ' ' : '' }}{{ i.shot_uhd ? '4K ' : i.hires ? 'HD ' : '' }}{{ i.spl_number }} R{{ i.license }}

  • Add to board
  • Similar {{ mediaType(i) }}