Scattering spectroscopy nano sensor

A scattering microscopy nano sensor comprising:

• a floor structure;
• a surface enhanced Raman spectroscopy (SERS) substrate supported by the floor structure;
• a ceiling structure extending from the floor structure and over the SERS substrate;
• and
• a lenslet supported by the ceiling structure over the SERS substrate.

A nano sensor system comprising:

• a scattering microscopy nano sensor comprising:
• a floor structure;
• a surface enhanced Raman spectroscopy (SERS) substrate supported by the floor structure to produce an optical scattering response signal indicative of an analyte when interrogated by an optical stimulus;
• a ceiling structure extending from the floor structure and over the SERS substrate;
• a lenslet supported by the ceiling structure over the SERS substrate;
• and
• an optical interrogator comprising an illumination source and a signal detector, the illumination source to provide the optical stimulus, the signal detector to detect the optical scattering response signal, wherein the optical stimulus and the optical scattering response signal are to pass through the lenslet.