Surface Enhanced RS Flashcards
0
Q
A disadvantage of SERS for oil paintings is….
A
Oil hinders the interaction of samples molecules.
1
Q
A technique to reduce the fluorescence of fluorescent material and therefore….
A
Enhance the weak Raman signal.
2
Q
SERS has an improved….
A
Spatial resolution.
3
Q
How does SERS work?
A
A metal colloid substance is placed on sample surface. Contains nano particles of gold/silver/copper. These act as an antennae for Raman signal by amplifying it.
4
Q
Fluorescent materials are a problem because….
A
The fluorescence of materials can swamp the Raman peaks.
5
Q
The use of a metallic colloid makes the technique…..
A
Somewhat destructive as a substance is added to the sample.
