Wavelength resonance peak

Figure 3.3 Near-field transmission spectra and images of a single gold nanorod (length 510nm, diameter 20nm). The two transmission spectra were obtained at positions 1 and 2 indicated in the inset. Each image was obtained at the resonance peak wavelength. (Reproduced with permission from Royal Society of Chemist [10]).

X = InajX, where X is the wavelength of light) was approximately 40.5 (a = 4.08 /im). Prior to and subsequent to the explosion, the experimental and theoretical resonance spectra are in good agreement, but there is a discontinuity in size, which occurs at x = 40.5. Note that the distance between the resonance peaks at x = 39.8 and x = 41.7 in the theoretical and experimental spectra do not match owing to the change in droplet size associated with the explosion. 

If we use an ns probe pulse, we can tune its wavelength resonant to one particular vibronic transition. In this case, the LIF signal reflects the population of a single vibrational level involved in the WP. By scanning the wavelength of the probe pulse, we can observe the population distribution of the eigenstates involved in the WP. The peak intensities of the LIF signal are influenced by the Franck-Condon factors and the probe laser intensities, so that the relevant corrections are necessary to obtain the population distribution. 

Of much greater importance is the appearance of the j- band resonant peak at 575 nm. Below 10 3 M, there is no significant absorption at this wavelength. By the time the molarity reaches 1.4 x 10 2 M, the peak at this wavelength is dominant. At this molarity, the solution is no longer a true solution, it is a mixture of a true solution and clusters of liquid crystalline material. The mixture is often described as having a stringy appearance. 

Figure 5. Resonance ionization spectra of the elements Re, Fe, Ni, and Mo. For each element the wavelength of the frequency-doubled dye output was scanned while focussing the mass spectrometer on the most abundant atomic ion of the element. Each wavelength dependent peak represents ion formation from a specific groTond state or metastable atomic energy level (ll).

Hence one obtains the distance (in wavelengths) and the time (between resonant peaks)... 

Figure 7. (A) Shift in plasmon resonance peak wavelength upon addition of Biotin Peak wavelength before Biotin addition was at 539.48 nm (P), right after Biotin addition was at 546.36 nm (Q), 1 minute after Biotin addition was at 547.85 nm (R), 2 minutes after Biotin addition was at 548.8 nm (S), 3 minutes after Biotin addition was at 548.88 nm (T), and (B) Response of Streptavidin addition to a Biotin coated fiber The value of the wavelength at which plasmon resonance-related dip occurs was plotted vs. time for an in-line fiber optic biosensor based on structure A.

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