The team, which included French and Spanish collaborators, used a variant of a technique called atomic force microscopy, or AFM.

BBC: Atomic bond types discernible in single-molecule images

Jonathan Wolf, of the Independent Film and Television Alliance, runs AFM.

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They are carried out at a scale so small that room temperature induces wigglings of the AFM's constituent molecules that would blur the images, so the apparatus is kept at a cool -268C.

BBC: Atomic bond types discernible in single-molecule images

Barclays had previously been required to put forward its bid before July 5, but the bank asked Dutch regulator AFM for an extention to July 23 because of the volumous process of seekling regulatory approval in more than 60 countries.

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