Electron Micrograph (IMAGE)
Caption
Electron micrograph of the junction zone between the two valves of the pod. This wax-rich zone is capable of sealing micro-fissures when the pod is closed. High magnification of the open pod reveals the complex 3D structure of this zone: the wax (bright areas) can be seen between the rough elevations: it melts between 45 and 55 degrees Celsius, thereby sealing microscopic fissures in this area.
Credit
Max Planck Institute of Colloids and Interfaces
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