Nanostructures from nanoparticles

Abstract

This paper reviews recent experimental approaches to the development of surface nanostructures from nanoparticles. The formation of nanowires by electron beam writing in films of gold nanoparticles passivated with a specially designed class of ligand molecules (dialkyl sulfides) is presented, together with illustrations of practical nanostructures. Potential applications of this methodology are discussed. Another alternative to the controlled fabrication of arrays of nanoparticles, based on nanocrystals which contain molecular recognition elements in the ligand shell, is also surveyed. These particles aggregate in the presence of specifically designed molecular dications which act as a molecular binder. Finally, recent work on the formation of nanoscale surface architectures using x-ray patterning of self-assembled monolayers is introduced. Current and potential future applications of these surface nanostructures are discussed.

Oriented attachment and exchange coupling ofα−Fe2O3nanoparticles

“…Currently there is considerable interest in understanding and controlling the arrangement of nanoparticles because it is of importance for a number of interesting phenomena, including revealing the mechanisms behind crystal growth [11][12][13][14] and developing new technologies for building up nanostructured devices. 15 In order to control positioning of magnetic nanoparticles, their magnetic dipole moments have been utilized to guide them in applied fields or in stray fields from neighboring particles. [16][17][18][19][20] Another potential method of controlling the position and properties of magnetic nanoparticles is to utilize exchange interaction between particles.…”

Synthetic Techniques and Applications of Activated Nanostructurized Metals: Highlights up to 2008

“…High temperatures (up to 1200 C or greater) are reached on a timescale of several seconds or less. Recent experimental approaches to the development of surface nanostructures from nanoparticles are reviewed in [154]. This is a useful method to produce metallic nanoparticles.…”

Precision chemical engineering: integrating nanolithography and nanoassembly

“…Based on these studies, micropatterns of binary molecular assemblies of different thiols (e.g. CH 3 and COOH terminated thiols) have been fabricated and used for the selective attachment of biological cells [17]. However, the size resolutions of these processes are limited in their applicability by the diffraction effects that would occur for small mask features.…”

“…onto surfaces to fabricate functional nanostructured systems for electronic, optoelectronic, biological, or sensing applications [1][2][3]. Precise control over the relative position and orientation of the nanocomponents is frequently required in such systems to obtain useful properties [1][2][3].…”