Gold nanoparticles background

Figure 2. Z-contrast STEM image of the Au on WO3 sample. The gold nanoparticles are the white spots on the WO3 surface. The contrast of the small gold particles has been enhanced and the image smoothed, so that small particles are visible, despite the lack of contrast to the background. (Reprinted from Topics in Catalysis, 122(1) 2007, pg 248, with permission from Elsevier Science.)...

Fig. 10.16 (a) Scheme for the self-assembly of the peptlde-functlonallzed 40-nm gold nanoparticles and deaggregation process, (b) Background corrected Raman spectra before black line) and 4 h after (dashed red line) the addition of 7.2 nM enzyme solution... 

Fig. 19 (A) Background subtracted CVs on rGO/GC (al), graphite/GC (b 1) and GC electrode (cl) in 4 mM H2O2/PBS (0.1 M, pH 7), scan rate 50 mV s" (reprint with permission from ref. 78). (B) Electrochemical reduction of enzymatically produced hydroquinone (HQ) on the rGO/GC interface modified with anti-mouse IgG for the detection of mouse-IgG, revealed by interaction by anti-mouse IgG-HRP (reprint with permission from ref. 78). (C) Fabrication processes of the gold nanoparticle based graphene/chitosan bionanolabel with integrated HRP-modified carcinoembryonic antigen (HRP-anti-CEA) and measurements protocol, PB = Prussian Blue (reprint with permission from ref. 79).

B is the full width at half maximum height of the diffraction peak, and 20/2 is the peak position in 20 divided by 2, or the peak position given in 0 [42]. Scherrer s equation is applicable to all nanomaterials whether they are pure metallic, metallic oxide or organic nanoparticles. Figure 12.3(a) shows the background-corrected and normalized XRD patterns of gold nanoparticles formed on an oat biomass through... 

Nanoparticles, e.g., silicon, gold, silver (Dequaire et al., 2000), are often used as materials for protein labeling in immunoassays, especially in lateral flow device (LFD), where they are responsible for visualization of the results. Their advantage lies in the fact that they enhance the optical signal, and reduce the background interference (Schneider et al., 2000 Lochner et al., 2003 Matveeva et al., 2005 Chumbimuni-Torres et al., 2006 Li et al., 1999 Peng et al., 2007a). 

Figure 13 SEM images of (a) a patterned SAM presenting methyl groups (white squares) and thiol groups (b), (c), and (d) patterned deposition of Au nanoparticles (white dots pointed by an arrow in (d) in the regions that present thiol groups. The background texture in (d) is the islands that are formed on evaporating gold under the conditions we used. The mean diameter of the Au nanoparticles was 20 nm. (From Ref. 169.)...

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