Contact: Lorenz Steinbock
Ecole Polytechnique Fédérale de Lausanne
Caption: This is a screenshot of an electron microscope at EPFL's Center for MicroNanotechnology. The hole of the capillary, seen from above, can be shrunk according the needs and monitored live until the proper diameter is reached. The green circle shows that it has now a diameter of 20 nm.
Credit: Alain Herzog / EPFL
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