Definition of "subnanometer" []

• Having dimensions, or a resolution of less than a nanometer (adjective)

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• "While non-optical imaging systems, such as electron microscopes, can resolve objects well into the subnanometer scale, these systems operate under conditions not ideal for the study of biological samples."
• "Chu and his co-authors were able to use the same CCD-fluorescence technology to resolve distances with subnanometer precision and accuracy by correcting a trick of the light."
• "This allows us to control the pore diameter and surface chemistry at the subnanometer scale."