nanoparticles nucleation surface interactions

From the frontiers of research on ice dynamics in its broadest sense, this review surveys the structures of ice, the patterns or morphologies it may assume, and the physical and chemical processes in which it is involved. Open questions in the various fields of ice research in nature are highlighted, ranging from terr…

• NEVİN AYTEMİZ

Computer simulations suggest that ultrathin metal wires should develop exotic, noncrystalline stable atomic structures once their diameter decreases below a critical size of the order of a few atomic spacings. The new structures, whose details depend upon the material and the wire thickness, may be dominated by icosah…

• OĞUZ GÜLSEREN

Three series of bimetallic nanoparticle catalysts (Rh(x)Pd(1-x), Rh(x)Pt(1-x), and Pd(x)Pt(1-x), x = 0.2, 0.5, 0.8) were synthesized using one-step colloidal chemistry. X-ray photoelectron spectroscopy (XPS) depth profiles using different X-ray energies and scanning transmission electron microscopy showed that the as-…

We have investigated the controversy surrounding the (sqrt[3] x sqrt[3]) R30 degrees structure of self-assembled monolayers of methylthiolate on Au(111) by first principles molecular dynamics simulations, energy and angle resolved photoelectron diffraction, and grazing incidence x-ray diffraction. Our simulations find…

• MEHMET FATİH DANIŞMAN

No abstract yet.

No abstract yet.

• HASAN KOTAN

International audience

• ALPER UZUN
• MEHMET HAKKI ALMA

We have investigated the melting behavior of thin lead wires using molecular dynamics. We find that---in analogy with cluster melting---the melting temperature ${\mathit{T}}_{\mathit{m}}$(R) of a wire with radius R is lower than that of a bulk solid ${\mathit{T}}_{\mathit{m}}^{\mathit{b}}$ by ${\mathit{T}}_{\mathit{m}…

No abstract yet.

• ENDER SUVACI

No abstract yet.

• FEHİM FINDIK

The study focuses on acid adsorption on cold ice particle surfaces. The investigation encompasses HCl, DCl, and HBr adsorbate spectroscopy, Monte Carlo simulations of molecular HCl adsorbate on a model ice particle, and ab initio studies of HCl solvation and ionization in mixed acid−water clusters. It is shown that ic…

• NEVİN AYTEMİZ

The properties of water on both molecular and macroscopic surfaces critically influence a wide range of physical behaviors, with applications spanning from membrane science to catalysis to protein engineering. Yet, our current understanding of water interfacing molecular and material surfaces is incomplete, in part be…