A5066798915- Advanced Surface Polishing Techniques
- Graphene research and applications
- Advancements in Battery Materials
- Silicon Nanostructures and Photoluminescence
- Diamond and Carbon-based Materials Research
- Laser Material Processing Techniques
- Plasma Diagnostics and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Catalytic Processes in Materials Science
- Burn Injury Management and Outcomes
- Energetic Materials and Combustion
- Nanofabrication and Lithography Techniques
- Infection Control and Ventilation
- COVID-19 and healthcare impacts
- Supercapacitor Materials and Fabrication
- Plasma Applications and Diagnostics
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Ion-surface interactions and analysis
- Chemical Synthesis and Characterization
- Advanced Battery Materials and Technologies
- Carbon Nanotubes in Composites
- Dust and Plasma Wave Phenomena
- Electrocatalysts for Energy Conversion
- Nanowire Synthesis and Applications
University of California, Riverside
2017-2022
University of California System
2021
Riverside
2020-2021
Center for Nano Science and Technology
2012-2018
Italian Institute of Technology
2012-2018
Politecnico di Milano
2012-2018
Mylan (Switzerland)
2017
Milano University Press
2017
Mylan (South Africa)
2017
Instituto Nacional de Investigaciones Nucleares
1994-1995
Silicon-core-carbon-shell nanoparticles have been widely studied as promising candidates for the replacement of graphite in commercial lithium-ion batteries. Over more than 10 years R&D, many groups actively working this field proposed a profusion distinctive nanomaterial designs. This broad variety makes it extremely challenging to establish mechanistic insight into how fundamental material structure and properties affect battery performance. In particular, interplay between character...
Transferring the motion from a human operator to humanoid robot is crucial step enable robots learn and replicate movements. The ability retarget in realtime whole-body motions that are challenging for balance critical teleoperation. In this work, we design retargeting framework allows of operator, acquired by wearable capture suit, while maintaining balance. We introduce some dynamic filter forbid dangerous can make fall. validate our approach through several experiments on iCub robot,...
A Li-ion battery anode based on few-layer graphene flakes and ultra-small Si nanoparticles shows a remarkable stability during cycling (0.04% capacity fading per cycle). Our approach offers viable to develop new generation anodes.
We have performed an extensive investigation of the parameters affecting degree nitrogen fixation and its energy cost in a low-pressure, radio frequency-driven plasma reactor. find that hydrogen-to-nitrogen ratio has strong effect on both yield cost. A significant (∼8%) can be achieved under hydrogen-rich mixtures, but unfortunately these conditions require higher input compared to one-to-one ratio. The high largely exceeds dissociation plasma, suggesting that, while likely contributes...
Glassy carbon (GC) microelectrode arrays can simultaneously discriminate the reduction and oxidation peaks of dopamine serotonin at low concentrations (10–200 nM). They demonstrated fast electron transfer kinetics good fouling properties.
Nickel (Ni) nanoparticles have been synthesized from the dissociation of nickelocene (Ni(Cp) 2 ) in an argon‐hydrogen (Ar‐H low pressure continuous‐flow non‐thermal plasma. The influence process parameters on Ni nanomaterial structure, size, size‐dispersion, and carbon content has characterized by EDS TEM analysis. role hydrogen dilution plasma input power material throughput is carefully discussed. These data, combination with prediction electron affinity ionization potential Ni(Cp) DFT...
By combining experimental measurements with ab initio molecular dynamics simulations, we provide the first microscopic description of interaction between metal surfaces and a low-temperature nitrogen–hydrogen plasma. Our study focuses on dissociation hydrogen nitrogen as main activation route. We find that ammonia forms via an Eley–Rideal mechanism where atomic abstracts from catalyst surface to form extremely short time scale (a few picoseconds). On copper, formation occurs plasma-produced...
Biocidal nanothermite composites show great potential in combating biological warfare threats because of their high-energy-release rates and rapid biocidal agent release. Despite high reactivity combustion performance, these suffer from low-energy density the voids formed due to inefficient packing fuel oxidizer particles. In this study, we explore plasma-synthesized ultrafine Si nanoparticles (nSi, ∼5 nm) as an energetic filler increase energy Al/Ca(IO3)2 energetic-biocidal by filling...
Silicon-carbon composites, usually in the form of core–shell silicon-carbon nanostructures, have been widely investigated as potential candidates for replacement graphite anodes lithium ion batteries. Due to availability a broad range precursors and protocols realization carbon shell, research groups active this area typically developed their own strategy manufacture desired structure. This is problematic since it does not allow direct comparison performance similar structures during...
High-throughput plasma synthesis of highly crystalline nanoparticle-assembled silicon thin films.
Surface texturing of silicon substrates is performed by femtosecond laser irradiation at high repetition rates. Various fabrication parameters are optimized, in order to achieve very absorptance the visible region from micro-structured wafers as compared unstructured ones. A 35-fold reduction processing time demonstrated increasing rate 1 kHz 200 kHz. Further scaling up MHz proved with potential a factor 65. figure merit ξ introduced for quantitative guidance choice parameters.
We discuss the synthesis and properties of nanoparticles thin films for refractory plasmonic applications. The approach focuses on titanium nitride (TiN), which overcomes limitations more common materials like silver gold with respect to temperature stability. Freestanding TiN-based are produced in two serially connected plasma reactors, where TiN nanocrystals nucleated a first stage, then aerodynamically dragged second conformally coated silicon layer. An in-depth comparison between bare is...
The electron energy distribution of a low-temperature dusty plasma has been measured via Langmuir probe. An unexpected broad peak at in the 2–4 V range observed. This can be theoretically reproduced for sufficiently large emission rate from nanoparticles dispersed plasma. A careful analysis nanoparticle balance, using values concentration and density, confirms that particles are hot under conditions this study to rapidly inject electrons into field-assisted thermionic emission. work suggests...
Abstract The COVID-19 crisis has taken a significant toll on human life and the global economy since its start in early 2020. Healthcare professionals have been particularly vulnerable because of unprecedented shortage Facepiece Respirators (FPRs), which act as fundamental tools to protect medical staff treating coronavirus patients. In addition, many FPRs are designed be disposable single-use devices, creating an issue related generation large quantities non-biodegradable waste. this...
In this contribution, we describe a room-temperature, template-free, single-step approach for the growth of functional crystalline silicon nanostructures with tailored porosity and photonic properties. The method employs plasma-assisted nanoparticle synthesis reactor in combination supersonic jet deposition stage, what call or plasma-assisted, aerosol deposition. relationship between plasma parameters, impaction conditions resulting material structural characteristics is investigated. This...
In this contribution, we describe the development of a test-bed for characterisation non-thermal dusty plasmas via Langmuir probe. This technique, while allowing precise determination plasma parameters and electron energy distribution function (EEDF), is notoriously difficult to apply in dust-forming chemistries. We overcome limitation by utilising two-plasmas system which particle precursor, case acetylene, fully consumed converted into nanoparticles first reactor, followed injection dust...
The localized release of energy at the surface plasma-exposed materials plays a crucial role in many plasma-driven processes. Unfortunately, interaction between low-temperature plasmas and surfaces is both poorly understood difficult to characterize. Here, we use Raman thermometry measure temperature graphene during plasma exposure. We observe significant increase even for modest input powers. These results suggest that two-dimensional are effective probes quantitative characterization...
By combining experimental measurements with <i>ab initio</i> molecular dynamics simulations, we provide the first microscopic description of interaction between metal surfaces and a low-temperature nitrogen-hydrogen plasma. Our study focuses on dissociation hydrogen nitrogen as main activation route. We find that ammonia forms via an Eley-Rideal mechanism where atomic abstracts from catalyst surface to form extremely short timescale (a few picoseconds). On copper, formation...