E-cigarettes work by vaporizing a liquid solution into an aerosol mist.

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Electronic cigarettes are battery-powered devices that heat a liquid nicotine solution in a disposable cartridge, creating vapor that users inhale.

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This means that when a drop of liquid is mixed with a suitable solution of paramagnetic ions, which become magnetic in the presence of a permanent magnet, it will be pushed to where the field is weakest, and stay there.

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His company worked on the stem cell solution, which is seen as a pink liquid in the photo at left.

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One issue is that the vascular networks could become blocked once damage was sustained and the "veins" were ruptured -- a potential solution for which was to build multiple pathways for the liquid to circulate.

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The solution that Apple stores recommend is iKlear, a non-toxic liquid cleaner, which its manufacturer Meridrew Enterprises says Apple uses on its own production lines.

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