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Keywords:

  • rolled-up nanotech;
  • optical microcavity;
  • molecular adsorption/desorption;
  • surface detection;
  • label-free sensors
Thumbnail image of graphical abstract

Opto-chemical sensors are prepared by self-assembly of SiO/SiO2 nanomembranes into microtube structures. Dynamic molecular processes of H2O and C2H5OH are detected on the surface of sub-wavelength-thin nanomembranes. Based on the perturbation theory, quantitative information of molecule layer changes is acquired. The nanomembrane-based molecular-sensing ability constitutes a versatile platform for the detection of diverse surface phenomena in a label-free fashion.