A5021701531- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Analytical Chemistry and Sensors
- Mechanical and Optical Resonators
- Carbon Nanotubes in Composites
- Gas Sensing Nanomaterials and Sensors
- Material Dynamics and Properties
- Epoxy Resin Curing Processes
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Mechanical Behavior of Composites
- Advanced Fiber Laser Technologies
- Liquid Crystal Research Advancements
- Magneto-Optical Properties and Applications
- Plasmonic and Surface Plasmon Research
- Fiber-reinforced polymer composites
- Advanced Chemical Sensor Technologies
- Synthesis and properties of polymers
- Polymer Nanocomposites and Properties
- Graphene research and applications
- Polymer crystallization and properties
- Photochemistry and Electron Transfer Studies
- Thermodynamic properties of mixtures
- Photonic Crystals and Applications
- Flame retardant materials and properties
National Research Council
2016-2025
Institute of Polymers, Composites and Biomaterials
2016-2025
University of Trento
2023
University of Naples Federico II
1992-2021
Foundation for Research and Technology Hellas
2019
Rensselaer Polytechnic Institute
2019
University of Nottingham
2016
National Academies of Sciences, Engineering, and Medicine
2004-2015
Istituto Officina dei Materiali
2005-2014
Institute of Molecular and Cell Biology
2006-2014
In this work, the numerical and experimental analysis on use of thinned fiber Bragg gratings as refractive index sensors have been carried out. Wet chemical etching in a buffered hydrofluoric acid solution was used for sensor fabrication. Experimental characterization an almost full etched cladding is presented demonstrating good agreement with results resolutions /spl ap/10/sup -5/ -4/ outer around 1.45 1.333, respectively.
In this work, the numerical and experimental investigation of cladding modes re-organization in high refractive index (HRI) coated Long Period Gratings (LPGs) is reported. Moreover, effects on sensitivity to surrounding medium (SRI) have been outlined. When azimuthally symmetric nano-scale HRI coatings are deposited along LPGs devices, a significant modification distribution occurs, depending layer features (refractive thickness) SRI. particular, if parameters properly chosen, transition...
We report an original design approach based on the modal dispersion curves for development of long period gratings in transition mode near turning point exhibiting ultrahigh refractive index sensitivity. The theoretical model predicting a giant sensitivity 9900 nm per unit watery environment was experimentally validated with result approximately 9100 around ambient 1.3469. This places thin film coated LPGs as alternative to other fiber-based technologies high-performance chemical and...
This work demonstrates that the use of an unconventional optical fiber allows for generating lossy mode resonances (LMR), without need external high refractive index thin film. The basic idea consists using few centimeters having large core and cladding with higher index, which is spliced between two multi-mode fibers. Here, role such kind got by a commercially available double (DCF) W-type (RI) profile. possibility to induce tune phenomenon demonstrated, where resonance wavelength LMR peaks...
This article introduces an innovative sensor designed to explore the localized surface plasmon resonance (LSPR) effect using optical fiber technology for detection of pesticide Thiram. The proposed configuration consists etched silica multimode coated with gold nanoparticle (AuNP) layers able modulate reflected signal. What sets this apart is its ability stimulate LSPR modes single AuNPs, i.e. layer, and aggregation states nanoparticles or multilayer. capability has been demonstrated through...
In this work, highly sensitive refractive index measurements have been experimentally demonstrated by using thinned fiber Bragg grating (FBG) sensors. When the cladding diameter is reduced, significant changes in effective occur due to surrounding medium modifications, leading wavelength shifts. Uniformly FBGs obtained wet chemical etching hydrofluoric acid solutions. order prove sensor sensitivity, experimental tests carried out glycerine solutions with well-known indices. Obtained results...
We demonstrate the integration of single-walled carbon nanotubes (SWCNTs) onto quartz crystal microbalance (QCM) and standard silica optical fiber (SOF) sensor for alcohol detection at room temperature. Different transducing mechanisms have been used in order to outline sensing properties this class nanomaterials, particular attention has focused on two key parameters applications: mass refractive index changes due gas absorption. Here, Langmuir–Blodgett (LB) films consisting tangled bundles...
In the last years, fiber optic sensors have been widely exploited for several sensing applications, including static and dynamic strain measurements up to acoustic detection. Among these, Bragg grating indicated as ideal candidate practical structural health monitoring in light of their unique advantages over conventional devices. Although this class has successfully tested low-frequency measurements, identification sensor performances high-frequency detection, emission ultrasonic...
In this work, an all-fiber high-resolution refractive index sensor based on a microstructured fiber Bragg grating is presented. The proposed structure relies partial and localized etching of the cladding layer along standard grating. main spectral changes structured are increasing stopband formation narrow allowed band strongly dependent features surrounding index. A prototype has been fabricated by using wet proper masking procedure; experimental results reveal possibility to carry out...
We propose a novel fabrication process to realize optical sensing probes based on metal–dielectric crystals self-assembled an fiber tip. The breath figure methodology has been adapted work directly nonconventional substrates, such as fibers, enabling the formation of regular and ordered metallo-dielectric tips. Accurate morphological characterization was carried out qualify process. reported results indicate that proposed technique provides method for rapid cost-effective prototyping...