The nano-gold surface can be functionalized by thiolated organic
compounds due to the strong af
fi
nity of gold to the thiol group of
these compounds. The property of gold to make a strong bond with
the thiol group of organic compounds enables it to achieve stable and
uniform monolayer of these organic compounds on its surface. This
monolayer can act as a cross-linker for binding antibodies and make
them sterically accessible for the target antigen as illustrated in
Fig. 1
b
and thus can be used for studying antibody-antigen reaction dynamics
[22
–
23]
by detecting the change in the LSPR resonance wavelength
due to adsorption, dissociation and regeneration of the surface in real
time as shown in
Fig. 1
c and various other such mechanisms.
In this paper we show the dependence of LSPR spectral peak on the
nano-ripple dimension and its saturation point, and the bio-