Ultrasensitive chemical analysis by Raman spectroscopy.
Kneipp
K
K
Physics Department, Technical University Berlin, D 10623 Berlin, Germany, and G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
Kneipp
H
H
Itzkan
I
I
Dasari
R R
RR
Feld
M S
MS