Maria Chiara Munisso

Learn More
The aim of this paper is to clarify at the nanometer scale the relevant factors influencing the hydrothermal resistance to polymorphic transformation of alumina/zirconia composites, primary candidates for artificial joint applications. The topographic distribution of oxygen vacancies and lattice strain on the composite surface were visualized by means of(More)
The cathodoluminescence (CL) spectrum of the synthetic sapphire single crystal has been studied with respect to the different crystallographic planes of the crystal in order to describe the tensorial stress dependence of the band related to oxygen defects. Experiments provide the link between CL spectral shift and stress, which is referred to as the(More)
Since previous studies have linked the genetic mutations of Apolipoprotein B (ApoB) to the low density lipoprotein (LDL) cholesterol levels, it can be believed that the knockdown of ApoB by siRNA silencing is a useful method to reduce the cardiovascular disease. However, the spontaneous uptake of siRNA is hindered, and thus vectors are necessary to aid its(More)
A rapid and efficient method to stimulate bone regeneration would be useful in orthopaedic stem cell therapies. Rolipram is an inhibitor of phosphodiesterase 4 (PDE4), which mediates cyclic adenosine monophosphate (cAMP) degradation. Systemic injection of rolipram enhances osteogenesis induced by bone morphogenetic protein 2 (BMP-2) in mice. However, there(More)
A method to determine the in-plane cathodoluminescence (CL) probe response function (PRF) (i.e., the function characterizing the in-plane luminescence intensity distribution within the electron probe volume) is proposed, which is based on "perturbing" the spectral position of a selected luminescence band using a highly graded stress field. The method is(More)
In-depth and in-plane response functions of photo- and electro-stimulated probes have been modeled and quantitatively evaluated in order to assess their suitability to detect the highly graded residual stress fields generated at the surface of alumina hip joints. Optical calibrations revealed large differences in probe size, which strongly affected the(More)
Elevated low-density-lipoprotein cholesterol (LDL-C) level is a major risk factor leading to cardiovascular diseases. Therefore, since the proprotein convertase subtilisin kexin type 9 (PCSK9) regulates LDL-C receptors, it represents the appropriate target for cholesterol-lowering gene therapy. However, although delivery of antisense oligonucleotides (ODNs)(More)
The cathodoluminescence (CL) spectrum arising from diamagnetic point defects of silicon oxynitride lattice was analyzed to extract quantitative information on local stress fields stored on the surface of a silicon nitride polycrystal. A calibration procedure was preliminarily made to obtain a relationship between CL spectral shift and applied stress,(More)
Room-temperature red cathodoluminescence (CL) emission (R band) arising from the paramagnetic point-defect population present in amorphous silicon oxide (SiOx) has been characterized with respect to its shift upon applied stress, according to a piezo-spectroscopic (PS) approach. The R band (found at around 630 nm) originates from nonbridging oxygen hole(More)
  • 1