Nanotechnology, shortened to nanotech, is the study of the controlling of matter on an atomic and molecular scale. Generally, nanotechnology deals with structures sized between 1 to 100 nanometer in at least one dimension and involves developing materials or devices within that size. The use of nanotechnology in the field of pharmaceutics and drug delivery has grown over the last few years, so ...

The use of nanometric size materials as embedded clusters, nanometric films, nanocrystalline layers and nanostructures is steadily increasing in industrial processes aiming to produce materials and devices. This is especially true in today Si-based microelectronics with transistors made of a multitude of different thin film materials (B-, As-, and P-doped Si, NiSi(Pt), poly-Si, W, TiOx, LaO, Si...

C/EBPδ is a tumour suppressor transcription factor that induces gene expression involved in suppressing cell migration. Here we investigate whether C/EBPδ-dependent gene expression also affects cell responses to nanometric topology. We found that ablation of the C/EBPδ gene in mouse embryonal fibroblasts (MEFs) decreased cell size, adhesion and cytoskeleton spreading on 240 nm and 540 nm nanome...

Molecular dynamics simulations of nanometric cutting on monocrystalline germanium are conducted to investigate the subsurface deformation during and after nanometric cutting. The continuous random network model of amorphous germanium is established by molecular dynamics simulation, and its characteristic parameters are extracted to compare with those of the machined deformed layer. The coordina...

We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a silicon-based multilayer can be locally coupled and guided through dielectric ridges of nanometric thickness with low propagation losses. Using a conventional prism-based configuration, we demonstrat...

www.nietoeditores.com.mx Microvesicles as messengers of cell and tissue dysfunction Cellular microvesicles are membrane nanometric vesicles, 0.1-1 μm in size, released into body fluids by activated cells or during apoptosis in a variety of pathological conditions [1-4]. Characteristically, cell activation disturbs phospholipids transport and cytoskeleton membrane connexions resulting in phospha...

We investigate the properties of nanometric liquid films with a new noninvasive technique. We measure the spontaneous thermal fluctuations of the free surfaces of liquids to probe their hydrodynamic boundary condition at a solid wall. The surface fluctuations of a silicon oil film could be described with a no-slip boundary condition for film thicknesses down to 20 nm. Oppositely, a 4 nm negativ...

The vast majority of biophysical studies of membrane proteins (MPs) at the atomic scale are performed in vitro with preparations as homogeneous as possible, where the protein is isolated in a nonnative environment. MP samples for nuclear magnetic resonance (NMR) spectroscopy are no exception to the rule, in particular because purification helps to clearly detect and unambiguously identify signa...

nanometric carbid silicon (sic) supported monometallic and bimetallic catalysts containing fe, co, ni transition metals were prepared by wet impregnation method. multiwall carbon nanotubes (mwcnts) were synthesized over the prepared catalysts from catalytic decomposition of acetylene at 850°c by thermal chemical vapor deposition (tcvd) technique. the synthesized nanomaterials (catalysts and cnt...

Fluoroquinolones antibiotics are effective intracellular antibiotics, and their activity depends on achieving appropriated concentrations. It is thought that to reach the intracellular environment, fluoroquinolones interacts with the membranes lipid bilayer and/or recognizes the membranous proteins like efflux pumps (1,2). Therefore, probing drug/lipid interactions at the molecular level repres...