Spatially Selective Photochemical Reduction of Silver on Nanoembossed Ferroelectric PZT Nanowires

Abstract

It is well known that photochemical reaction in an aqueous solution can be chosen by selectively patterning the domain structures of ferroelectrics. In this work, we investigate the photochemically induced deposition of Ag particles on ferroelectric lead zirconate titanate [Pb(Zr(x),Ti(1 - x))O(3)] nanowires fabricated by nanoembossing technology. The photochemical reduction of Ag particles is found to occur preferentially along the embossed nanowires. By imaging domain configurations of the embossed films using the piezoresponse force microscope, the spatially selective deposition of Ag particles can be associated with the underlying ferroelectric domain structures created by the nanoembossing process. The controllable and selective deposition of metal species onto nanoembossed ferroelectric nanostructures without the need for an external electrical field is promising for providing a new route to nanoferroelectric lithography.

Surface enhanced luminescence and Raman scattering from ferroelectrically defined Ag nanopatterned arrays

“…15,[19][20][21][22][23][24][25] Studies have shown that metallic nanoparticle deposition from an aqueous solution onto þZ surfaces of LiNbO 3 domain patterns can be achieved. [23][24][25] The nanopatterned features created using Ag nanoparticles possessed a uniform distribution with a size variation between 2 and 10 nm in both diameter and height. 24 Photochemical reduction on LiNbO 3 has been shown under certain conditions to result in nanopatterns which form along domain walls, 17 which have further been shown to be conducting.…”

Adherent cells avoid polarization gradients on periodically poled LiTaO3 ferroelectrics

“…In comparison, our experimental conditions contained very high concentration of proteins and the sticky fibrinogen leads to a rapid formation of a proteinaceous overlayer that was found to be independent of the polarization. While the adsorption of molecules on polarized surfaces seems to be quite complex, the general notion that molecular interaction with the surfaces might depend on the fields present is supported by the observation that in the region of the ferroelectric domain boundaries the photo-reduction rate of AgNO 3 , HAuCl 4 , Pt (NO 3 ) 2 and other compunds is increased [23,[36][37][38][39]. In addition it was found that nanowires of pure Ag, Au and Pt were grown along the predefined 180 0 ferroelectric domain walls on c-cut congruent LiNbO 3 Less was so far known on interaction of cells with patterned, polarized substrates.…”

Synthesis and anti-fungal effect of silver nanoparticles–chitosan composite particles

“…1 Silver nanoparticles have been applied in many fields including photonics, micro-electronics, photocatalysis, lithography, and surface-enhanced Raman spectroscopy. 2,3 Several types of chemical and physical technologies, such as chemical reduction, [4][5][6] electrochemical reduction, [7][8][9] photochemical reduction, [10][11][12] and heat evaporation 13,14 have been developed for the synthesis of silver nanoparticles. In recent years, bio-or green-synthesis of silver nanoparticles has become an emerging science.…”