Bruker Optics, Inc.

The Metropolitan Museum of Art

Marco Leona

Thomas J Tague, Jr

In apparatus for performing Surface Enhanced Raman Spectroscopy (SERS), rather than applying a sample to be analyzed to an SERS active substrate, the SERS active substrate is applied to the sample using an inkjet nozzle to apply a substance containing a colloidal metal, such as silver, to the sample. The prepared sample is then analyzed with a Raman spectrometer in a conventional fashion.

Method and apparatus for in situ measurement of material properties by surface enhanced raman spectroscopy

A new process is presented to non-invasively identify organic dyes in historic textiles and other works of art. A small gel bead loaded with a SERS substrate is used to gently extract microscopic amounts of dyes from works of art, without the need to remove a sample and separately extract the dye by acid hydrolysis of the fiber-mordant-dye system. The gel bead subsequently is coated with a silver, gold or copper colloid or with silver, gold or copper nanoislands, and is examined in accordance with a surface enhanced Raman scattering technique to identify the dye.

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Marco Leona