We present data-driven simulations for gold nanostructures, and develop a model that links total energy to geometrical features of the particle, with ultimate goal deriving reliable edge energies gold. Assuming can be decomposed into contributions from bulk, surfaces, edges, vertices, we use machine learning multi-variant fits associated coefficients. The proposed method calculations using prod...

Nanoaggregates formed by metal spheres of different radii and interparticle distances represent finite, deterministic, self-similar systems that efficiently concentrate optical fields and act as "nanolenses". Here we verify experimentally the theoretical concept of nanolenses and explore their potential as enhancing nanostructures in surface enhanced Raman scattering (SERS). Self-similar struct...

Self-assembly has emerged as a promising technique for fabrication of novel hybrid materials and nanostructures. The work presented in this thesis has been focused on developing nanoscale materials based on synthetic de novo designed polypeptides. The polypeptides have been utilized for the assembly of gold nanoparticles, fibrous nanostructures, and for sensing applications. The 42-residue poly...

The plasmonic properties of bimetallic (gold and silver) core-shell nanostructures were studied numerically by using the boundary element method implemented in MATLAB (MNPBEM toolbox). dependence bulk refractive index sensitivity on core/shell thicknesses was investigated, regions enhanced sensitivities identified for both Ag@Au Au@Ag type nanostructures. For nanoparticles, utilizing a 14 ± 2 n...

The physicochemical properties of noble metal nanocrystals depend strongly on their size and shape, and it is becoming clear that the design and facile synthesis of particular nanostructures with tailored shape and size is especially important. Herein a novel class of hydrangea flower-like hierarchical gold nanostructures with tunable surface topographies and optical properties are prepared for...

The paper is focused on electrochemical approaches for nanostructuring of semiconductor compounds with further applications in nano - microelectronic devices. A cost-effective technology nanowires and nanotubes obtaining by pulsed deposition presented. Functionalization elaborated nanostructures gold or platinum via electroplating improves the properties nanostructures. An optimization varicap ...

Dual-scale diamond-shaped gold nanostructures (d-DGNs) with larger scale diamond-shaped gold nanoposts (DGNs) coupled to smaller scale gold nanoparticles have been fabricated via interference lithography as a highly reliable and efficient substrate for surface enhanced Raman scattering (SERS). The inter- and intra-particle plasmonic fields of d-DGNs are varied by changing the periodicity of the...

We report a facile, one-pot, shape-selective synthesis of gold nanoparticles in high yield by the reaction of an aqueous potassium tetrachloroaurate(III) solution with a commercially available detergent. We prove that a commercial detergent can act as a reducing as well as stabilizing agent for the synthesis of differently shaped gold nanoparticles in an aqueous solution at an ambient condition...

Plasmonics is a rapidly growing field with many potential applications, including biosensing and cancer detection [1]. Electron beam lithography (EBL) is often used to pattern gold or silver nanostructures onto silicon substrates. A thin layer of either Cr or Ti is used to promote adhesion, but has recently been shown to damp plasmonic resonance [2]. 3-mercaptopropyltrimethoxysilane (MPTMS), wh...