silicon

Fabrication and characterization of nanostructured porous silicon-silver composite layers by cyclic deposition: dip-coating vs spin-coating

Composites of nanostructured porous silicon and silver (nPSi-Ag) have attracted great attention due to the wide spectrum of applications in fields such as microelectronics, photonics, photocatalysis and bioengineering, Among the different methods for …

Laser writing of nanostructured silicon arrays for the SERS detection of biomolecules with inhibited oxidation

The present work reports the processing of laser irradiated Si arrays (LISi) and underlines their surface enhanced Raman scattering (SERS) functionality. A nanostructured Si/SiOx surface forms providing additional fluidic and photoprotective …

Direct laser writing of nanorough cell microbarriers on anatase/Si and graphite/Si

The formation of hierarchical structures consisting of microstripe barriers decorated with nanorough ablated materials prepared by direct laser writing is described. Linear features of circa 25 μm width and 12 μm height are achieved on amorphous and …

Biosensores basados en compuestos nanoestructurados de silicio / Biosensors based on nanostructured silicon compounds

The main purpose of his project is the development of biosensors based on substrates of nanostructured silicon compounds. Among these materials we have chosen porous silicon (PS) with controlled nanocrystal size and nanostructured silica in the form MCM41.

Diseño de patrones por haces de iones en materiales para aplicaciones optoelectrónicas y biofuncionales. Micro y nanocaracterización / Ion beam patterning of materials for optoelectronic applications and biofunctionalization

Investigation of ion beam techniques for the development of micro- and nanostructures showing (a) Optical contrast that could be exploited as photonic structures of interest in optoelectronics, and (b) Electrical properties contrast that could be used as electric protocols to stimulate specific processes of biological cell differentiation

Nanotechnology for Microelectronics and Optoelectronics

When solids are reduced to the nanometer scale, they exibit new and exciting behaviours which constitute the basis for a new generation of electronic devices. Nanotechnology for Microelectronics and Optoelectronics outlines in detail the fundamental …

Optical investigation of the propagation of the amorphous--crystalline boundary in ion-beam irradiated LiNbO$_3$

The effects of high-energy silicon (5 MeV, 7.5 MeV and 30 MeV) irradiations have been optically investigated by the dark-mode m-lines technique. In all cases, an optically isotropic homogeneous layer is created after a certain critical fluence that …

Fundamentos de microelectrónica, nanoelectrónica y fotóníca

El contenido de Fundamentos de microelectrónica, nanoelectrónica y fotóníca se refiere a los fundamentos físicos de los semiconductores y de los dispositivos electroópticos y optoelectrónicos. Habiendo numerosos tratados sobre Electrónica, ́la …

Structural Characteristics of $p$-Type Porous Silicon and their Relation to the Nucleation and Growth of Pores

The influence of the anodization time on some structural characteristics (dissolved mass, maximum porous layer thickness, porosity, crystallite size, etc.) of p-type porous silicon has been investigated. It is shown that chemical dissolution of the …

Lattice-Mismatch Induced Stress in Porous Silicon Films

We have studied the stress in porous silicon films with different porosities at the interface with the substrate. Micro-Raman spectra were measured along a cleaved cross section to sample different layer depths. Each spectrum was fit to the phonon …