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Biosensors Based on Nanomaterials and Nanodevices
book

Biosensors Based on Nanomaterials and Nanodevices

by Jun Li, Nianqiang Wu
December 2017
Intermediate to advanced content levelIntermediate to advanced
517 pages
21h 5m
English
CRC Press
Content preview from Biosensors Based on Nanomaterials and Nanodevices
116 Biosensors Based on Nanomaterials and Nanodevices
6.2.2 Technical Rationale and Approach of SERS
As discussed in the previous section, the Raman scattering intensity is proportional to the
excitation eld intensity. To obtain higher Raman scattering signals, apparently, one can
think of using extremely high-power light sources such as kilowatt or megawatt lasers to
excite the target molecules; however, this approach is not practical because such a power-
ful light source is not commonly available and the corresponding optics are expensive.
Alternatively, one can think of articially creating a hotspot by concentrating the excita-
tion energ ...
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Publisher Resources

ISBN: 9781466551527