Morphology controllable synthesis of silver nanoparticles: Optical properties study and SERS application

Inverted nanotaper-based Ag film for optical absorption and SERS applications

“…The Ag (30 nm)/PAA hybrid structure still has an absorption of $90% even at 800 nm. Additionally, all Ag/ PAA hybrid structures are found to have a minimum absorption at about 320 nm, where the dielectric function of Ag, both real and imaginary part, almost vanish [30]. This feature of the spectra is inherent to the material properties and is independent of the particle geometry.…”

Effects of rapid thermal annealing for E-beam evaporated Ag films on stainless steel substrates

“…In previous investigations, it was found that the size and shape of silver nanoparticles, and the related surface roughness of the films, affect the optical properties of Ag films [36].…”

Hydrothermal synthesis of silver nanocubes with tunable edge lengths and their size dependent SERS behaviors

“…Generally, two main challenges for practical SERS applications are high activity to ensure an acceptable sensitivity and uniform hot spots to provide reproducible signals. Among these practical SERS substrates, silver NPs have attracted much attention because of their higher SERS efficiency than those of gold and copper NPs [15,16].…”

“…So far, many fabrication strategies to prepare silver NPs have been built, including photoreduction [27], microemulsion [28], biochemistry [29], solvothermal reaction [16], template strategy [30], electrochemical deposition [31], bionic technology [32], seeding growth approach [33], and micro-wave [34] [35] assisted reduction. Among all these synthesis methods, due to the ability to accurately design and engineer structures on nanometer scale, hydrothermal method have been proved to be a fascinating choice for selecting geometric variables (e.g., size and shape) and tailoring the optical properties of silver NPs to boost the SERS signals in a predictable way [36].…”