P.M. Ossi
YOU?
Author Swipe
View article: Testing snowpack layers by Raman spectroscopy
Testing snowpack layers by Raman spectroscopy Open
Each of the stratified snow layers in the snowpack is characterized by the morphology and size of the constituent snow grains. Selectively identifying the different snow layers is relevant to determining the stability of the snowpack. We p…
View article: Graining and Texturing of Metal Surfaces by Picosecond Laser Treatment
Graining and Texturing of Metal Surfaces by Picosecond Laser Treatment Open
Different approaches have been proposed to control the tribological behavior of materials under different conformal and non-conformal contact conditions with influenced surface texturing. The ever-increasing demand to improve material fric…
View article: Pre-resonance effects in deep UV Raman spectra of normal and deuterated water
Pre-resonance effects in deep UV Raman spectra of normal and deuterated water Open
We have investigated the shape of the OH/OD stretching Raman band of water as a function of the excitation wavelength in the deep UV region (200–266 nm).
View article: Investigating Perampanel Antiepileptic Drug by DFT Calculations and SERS with Custom Spinning Cell
Investigating Perampanel Antiepileptic Drug by DFT Calculations and SERS with Custom Spinning Cell Open
SERS, a clinical practice where medical doctors can monitor the drug concentration in biological fluids, has been proposed as a viable approach to therapeutic drug monitoring (TDM) of the antiepileptic drug Perampanel. The adoption of an a…
View article: SERS Detection of the Anti-Epileptic Drug Perampanel in Human Saliva
SERS Detection of the Anti-Epileptic Drug Perampanel in Human Saliva Open
Surface-Enhanced Raman Scattering (SERS) can obtain the spectroscopic response of specific analytes. In controlled conditions, it is a powerful quantitative technique. However, often the sample and its SERS spectrum are complex. Pharmaceut…
View article: Laser-Treated Steel Surfaces Gliding on Snow at Different Temperatures
Laser-Treated Steel Surfaces Gliding on Snow at Different Temperatures Open
With the goal of substituting a hard metallic material for the soft Ultra High Molecular Weight Polyethylene (UHMWPE) presently used to make the bases of skis for alpine skiing, we used two non-thermodynamic equilibrium surface treatments …
View article: Raman Spectroscopy-Based Assessment of the Liquid Water Content in Snow
Raman Spectroscopy-Based Assessment of the Liquid Water Content in Snow Open
In snow, water coexists in solid, liquid and vapor states. The relative abundance of the three phases drives snow grain metamorphism and affects the physical properties of the snowpack. Knowledge of the content of the liquid phase in snow …
View article: UV resonance Raman spectroscopy of weakly hydrogen-bonded water in the liquid phase and on ice and snow surfaces
UV resonance Raman spectroscopy of weakly hydrogen-bonded water in the liquid phase and on ice and snow surfaces Open
UV excitation selectively enhances Raman scattering from weakly hydrogen-bonded water molecules.
View article: Sensing the Anti-Epileptic Drug Perampanel with Paper-Based Spinning SERS Substrates
Sensing the Anti-Epileptic Drug Perampanel with Paper-Based Spinning SERS Substrates Open
The applications of SERS in therapeutic drug monitoring, or other fields of analytical chemistry, require the availability of sensitive sensors and experimental approaches that can be implemented in affordable ways. In this contribution, w…
View article: Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications
Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications Open
Laser synthesis emerges as a suitable technique to produce ligand-free nanoparticles, alloys and functionalized nanomaterials for catalysis, imaging, biomedicine, energy and environmental applications. In the last decade, laser ablation an…
View article: On the Optical Properties of Ag–Au Colloidal Alloys Pulsed Laser Ablated in Liquid: Experiments and Theory
On the Optical Properties of Ag–Au Colloidal Alloys Pulsed Laser Ablated in Liquid: Experiments and Theory Open
We simulated the extinction spectra of Ag–Au alloyed nanoparticles produced by pulsed laser ablation in liquid of elemental targets followed by re-irradiation of suitable mixtures of the obtained colloidal suspensions. When we make use of …
View article: Synthesis of Natural-Like Snow by Ultrasonic Nebulization of Water: Morphology and Raman Characterization
Synthesis of Natural-Like Snow by Ultrasonic Nebulization of Water: Morphology and Raman Characterization Open
The current devices used to produce massive amounts of snow (i.e., snow machines) can be improved with concern to both the energy efficiency and the quality of snow. Here we investigate an alternative snow production method based on the ul…
View article: A field study of mass balance and hydrology of the West Khangri Nup glacier (Khumbu, Everest).
A field study of mass balance and hydrology of the West Khangri Nup glacier (Khumbu, Everest). Open
<p>Depiction of glaciers&#8217; dynamics in the high altitudes of Himalaya, and hydrological fluxes therein is often limited, and yet necessary to assess their contribution to overall water budget in the downstream areas. Informa…
View article: Field Study of Mass Balance, and Hydrology of the West Khangri Nup Glacier (Khumbu, Everest)
Field Study of Mass Balance, and Hydrology of the West Khangri Nup Glacier (Khumbu, Everest) Open
The depiction of glaciers’ dynamics in the high altitudes of Himalaya and the hydrological fluxes therein is often limited. Although sparse seasonal (snow/ice) melt data may be available, dense precipitation networks are not available ever…
View article: SYNTHESIS AND CHARACTERIZATION OF SERS-ACTIVE HETEROAROMATIC MOLECULES
SYNTHESIS AND CHARACTERIZATION OF SERS-ACTIVE HETEROAROMATIC MOLECULES Open
Azahelicenes are extensively conjugated, intrinsically chiral molecules with interesting optical and optoelectronic properties. They show interesting SERS activity as well as fluorescence. While synthesizing 5-aza[6]helicene (2) we observe…
View article: Laser-Synthesized SERS Substrates as Sensors toward Therapeutic Drug Monitoring
Laser-Synthesized SERS Substrates as Sensors toward Therapeutic Drug Monitoring Open
The synthesis by pulsed laser ablation and the characterization of both the surface nanostructure and the optical properties of noble metal nanoparticle-based substrates used in Surface Enhanced Raman Spectroscopy are discussed with refere…
View article: Dynamic behaviour of miniature laser textured skis
Dynamic behaviour of miniature laser textured skis Open
Friction between moving bodies in mutual contact is a field studied in depth. A strategy to improve the tribological performance of mechanical components consists of modifying the surface microstructure using the laser surface texturing (L…
View article: SERS sensing of perampanel with nanostructured arrays of gold particles produced by pulsed laser ablation in water
SERS sensing of perampanel with nanostructured arrays of gold particles produced by pulsed laser ablation in water Open
Noble metal nanoparticles ( NP s) are among the most extensively studied colloidal systems, due to their surface plasmon resonances ( SPR ) of interest for biological sensing. We report here the synthesis of Au nanoparticles as water‐based…
View article: Nanosecond Laser Ablation of Solid Targets in a High-Pressure Atmosphere
Nanosecond Laser Ablation of Solid Targets in a High-Pressure Atmosphere Open
This chapter offers a perspective on pulsed laser deposition (PLD) using nanosecond pulses in an ambient gas at high pressure. A major distinguishing feature of such a highly specific technique is the large yield of nanoparticles (NPs), on…
View article: Synthesis by picosecond laser ablation of ligand-free Agand Au nanoparticles for SERS applications
Synthesis by picosecond laser ablation of ligand-free Agand Au nanoparticles for SERS applications Open
The morphological and optical properties of noble metal nanoparticles prepared by picosecond laser generated plasmas in water were investigated. First, the ablation efficiency was maximized searching the optimal focusing conditions. The na…
View article: Innovative metallic solutions for alpine ski bases
Innovative metallic solutions for alpine ski bases Open
Ski manufacturers are interested in improving ski performance in terms of rapid sliding, excellent trajectory control, and reduced maintenance. A possible approach to achieve this goal is based on substitution of the base material, moving …
View article: Decoration of silicon nanowires with silver nanoparticles for ultrasensitive surface enhanced Raman scattering
Decoration of silicon nanowires with silver nanoparticles for ultrasensitive surface enhanced Raman scattering Open
Silicon nanowires (Si NWs), produced by the chemical etching technique, were decorated with silver nanoparticles (NPs) produced at room temperature by the pulsed laser deposition (PLD) technique. Silver NPs were obtained by means of nanose…
View article: Functionalization of silicon nanowire arrays by silver nanoparticles for the laser desorption ionization mass spectrometry analysis of vegetable oils
Functionalization of silicon nanowire arrays by silver nanoparticles for the laser desorption ionization mass spectrometry analysis of vegetable oils Open
In this work, novel hybrid nanostructured surfaces, consisting of dense arrays of silicon nanowires (SiNWs) functionalized by Ag nanoparticles (AgNP/SiNWs), were used for the laser desorption/ionization time‐of‐flight mass spectrometry (LD…