A5005755326- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Metamaterials and Metasurfaces Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Thin-Film Transistor Technologies
- Analytical Chemistry and Sensors
- Advanced Fiber Optic Sensors
- Electrochemical sensors and biosensors
- Microbial Fuel Cells and Bioremediation
- Radiation Therapy and Dosimetry
- Photonic Crystals and Applications
- Photoreceptor and optogenetics research
- Gas Sensing Nanomaterials and Sensors
- Microbial Community Ecology and Physiology
- Spectroscopy and Quantum Chemical Studies
- Phase-change materials and chalcogenides
- Advanced Biosensing Techniques and Applications
- Advanced MEMS and NEMS Technologies
- Silicon Nanostructures and Photoluminescence
- Photocathodes and Microchannel Plates
- Silicon Carbide Semiconductor Technologies
- GaN-based semiconductor devices and materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Pulsed Power Technology Applications
National Research Council
2019-2024
Institute of Applied Science and Intelligent Systems
2021-2024
Institute for Microelectronics and Microsystems
2017-2020
University of Calabria
2019
Abstract The ability to control light at the nanoscale is basis of contemporary photonics and plasmonics. In particular, properly engineered periodic nanostructures not only allow inhibition propagation specific spectral ranges or its confinement in nanocavities waveguides, but make also possible field enhancement effects vibrational, Raman, infrared fluorescence spectroscopies, paving way development novel high-performance optical sensors. All these devices find an impressive analogy...
Abstract The steadily increasing demand for accurate analysis of vitamin D level, via measurement its best general marker, 25-hydroxyvitamin (25(OH)D), pushes the development novel automated assays capable working at very low concentrations. Here, we propose a plasmonic biosensor 25(OH)D3 (calcifediol) based on surface-enhanced infrared absorption spectroscopy, which exploits resonant coupling between nanoantennas and vibrational excitation small molecules. Specifically, our proposed...
In this work, we report on the first demonstration of Lab Fiber (LOF) dosimeter for ionizing radiation monitoring at ultra-high doses. The new consists in a metallo-dielectric resonator sub-wavelength scale supporting localized surface plasmon resonances realized optical fiber (OF) tip. resonating structure involves two gold gratings separated by templated dielectric layer poly(methyl methacrylate) (PMMA). Two LOF prototypes have been manufactured and exposed IRRAD Proton Facility CERN...
This work presents the development of an automatic and customized measuring system employing sigma-delta analog-to-digital converters transimpedance amplifiers for precise measurements voltage current signals generated by microbial fuel cells (MFCs). The can perform multi-step discharge protocols to accurately measure power output MFCs, has been calibrated ensure high precision low noise measurements. One key features proposed is its ability conduct long-term with variable time steps....
We propose and demonstrate a sensing platform based on plasmonic metasurfaces for the detection of very low concentrations deoxyribo-nucleic acid (DNA) fragments. The relies surface-enhanced infrared absorption spectroscopy, implemented via multispectral metasurface. Specifically, different regions (“pixels”) are engineered so as to separately cover medium-infrared range electromagnetic spectrum extending from functional-groups fingerprint region single analyte. In conjunction with suitable...
The need for miniaturized biological sensors which can be easily integrated into medical needles and catheters in vivo liquid biopsies with ever-increasing performances has stimulated the interest of researchers lab-on-fiber (LOF) technology. LOF devices arise from integration functional materials at nanoscale on tip optical fibers, thus endowing a simple fiber advanced functionalities enabling realization high-performance sensors. Consequently, 2017, we demonstrated first meta-tip (OFMT),...
We apply surface-enhanced infrared absorption (SEIRA) spectroscopy to monitor the denaturation process of a surface-bound protein A monolayer. Our proposed platform relies on plasmonic metasurface comprising different spatial subregions ("pixels") that are engineered exhibit resonances covering region electromagnetic spectrum is matched vibrational modes Amide groups. Specifically, we able determine changes in I and II vibration coupled modes, by comparing SEIRA reflectance spectra...
In this paper we present a device integrating on single glass substrate transparent heater and two resistive temperature sensors. Both sensors are constituted by ITO/Au/ITO stacked film, whose thicknesses have been optimized in order to achieve at the same time good electrical conductivity (about 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> S/m) high transparency degree (higher than 80%) visible region of spectrum. A double-spiral...
Next generation High Energy Physics (HEP) accelerators will require new devices and technologies capable of operating in extreme environments characterized by ultra-high radiation doses up to the MGy levels. To this aim, we report on an innovative Lab-On-Fiber (LOF) probe for real-time dose monitoring. The proposed platform is based a metallo-dielectric nanostructured grating made gold poly(methyl methacrylate) (PMMA) patterned termination single mode fibers. nanostructure has been...
This article investigates the stability of hydrogenated amorphous silicon (a-Si:H) p-i-n junctions employed as temperature sensors in lab-on-chip (LoC) applications. The devices have been tested under forward current injection and different temperatures (from room up to 90 °C) order reproduce practical operating conditions. Two sets with diborane concentrations p-doped layer investigated a case study. For both sets, temperature-drift error 0.05 °C/h sensitivity around 3 mV/°C range between...
Today, nanophotonics still lacks components for modulation that can be easily implementable in existing silicon-on-insulator (SOI) technology. Chalcogenide phase change materials (PCMs) are promising candidates tuning the near infrared: at nanoscale, thin layers provide enough contrast to control optical response of a nanostructure. Moreover, all-dielectric metamaterials allow resonant behavior without having ohmic losses telecom range. Here, novel hybridization SOI-based metamaterial with...
Microbial fuel cells (MFCs) represent a promising technology for sustainable energy generation, which leverages the metabolic activities of microorganisms to convert organic substrates into electrical energy. In oil spill scenarios, hydrocarbonoclastic biofilms naturally form at water-oil interface, creating distinct environment microbial activity. this work, we engineered novel MFC that harnesses these by strategically positioning positive electrode critical junction, integrating biofilm's...
In this work, we propose the hybridization of all-dielectric metasurfaces based on Si nanoresonators with thin layers phase change materials (PCM). The concept is important when one needs to avoid inherent ohmic losses in metal-based nanostructures, e.g. for high Qfactor and figure merit (FOM). can possess electric magnetic resonances while having low desired range. On other hand, chalcogenide PCM have at least two phases different optical properties, stable room temperature; switching...
The need for miniaturized biological sensors which can be easily integrated into medical needles and catheters in vivo liquid biopsies with ever-increasing performances has stimulated the interest of researchers Lab-on-Fiber (LOF) technology. In this framework, integration Metasurfaces (MSs) on tip optical fiber (Optical Fiber Meta- Tip, OFMT) represented a major breakthrough. Indeed, we showed that suitably designed plasmonic OFMT biosensor significantly outperforms standard ones due to...
An innovative pixeled plasmonic metasurface (MS) has been developed for surface-enhanced infrared absorption (SEIRA) spectroscopy. The MS is comprised of different pixels, each designed to monitor a specific region the electromagnetic spectrum. These pixels are engineered with resonances that match Amide I and II vibrational bands in range 1500-2000 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> . proposed allowed label-free...
This work presents a portable system developed to perform biochemical analyses requiring both temperature sensing for the thermal sample treatment and optical detect analyte. To achieve this goal, we coupled system-on-glass, hosting on single glass substrate thin film transparent heater two sensors, with interface electronics able drive heating source control temperature. The system-on-glass has been optimized ensure uniformity better than ±1.4 °C over large-area (6 cm <sup...
We report on a innovative Lab Fiber (LOF) dosimeter for ionizing radiation monitoring at ultra-high doses. The new consists in metallo-dielectric resonator sub-wavelength scale supporting localized surface plasmon resonances realized the optical fiber (OF) tip. resonating structure involves two gold gratings separated by templated dielectric layer of poly(methyl methacrylate) (PMMA). Two LOF prototypes have been manufactured and exposed, IRRAD Proton Facility CERN Geneva, to 23 GeV protons...