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Available through channels: dark-field imaging
Biomolecules and test fluid are added to the nanochannels, mounted in an optical dark-field microscope. The molecule appears as a dark shadow moving freely inside the channel. The darkness of the shadow is proportional to the mass of the molecule, due to an interference effect from the interaction of the light with the nanochannel and the molecule. Credit: Chalmers University of Technology/Yen Strandqvist/Daniel Spacek/Neuron Collective.
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