A5050363295- Gold and Silver Nanoparticles Synthesis and Applications
- Liquid Crystal Research Advancements
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Advanced biosensing and bioanalysis techniques
- Plasmonic and Surface Plasmon Research
- Nanocluster Synthesis and Applications
- Biosensors and Analytical Detection
- Semiconductor Lasers and Optical Devices
- Nonlinear Optical Materials Studies
- Quantum Dots Synthesis And Properties
- Photochemistry and Electron Transfer Studies
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Materials and Mechanics
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Optical Coatings and Gratings
- Metamaterials and Metasurfaces Applications
- Organic Light-Emitting Diodes Research
- Advanced Fiber Optic Sensors
- Analytical Chemistry and Sensors
- Nanofabrication and Lithography Techniques
- Nanocomposite Films for Food Packaging
- Plant Disease Management Techniques
Institute of Applied Science and Intelligent Systems
2016-2025
National Research Council
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2019
National Research Council
1999-2015
Istituto di Cibernetica “Eduardo Caianiello”
2003-2014
University of Naples Federico II
2002-2009
Trinity College Dublin
2001-2002
University of Salerno
2002
National Academies of Sciences, Engineering, and Medicine
2002
Biotechnology Research Institute
1998
Abstract In recent years, surface-enhanced Raman scattering (SERS) of a molecule/metal–semiconductor hybrid system has attracted considerable interest and regarded as the synergetic contribution electromagnetic chemical enhancements from incorporation noble metal into semiconductor nanomaterials. However, underlying mechanism is still to be revealed in detail. Herein, we report an irreversible accumulated SERS behavior induced by near-infrared (NIR) light irradiating on 4-mercaptobenzoic...
Molecular markers for prostate cancer (PCa) are required to improve the early definition of patient outcomes. Atypically large extracellular vesicles (EVs), referred as "Large Oncosomes" (LO), have been identified in highly migratory and invasive PCa cells. We recently developed characterized DU145R80 subline, selected from parental DU145 cells resistant inhibitors mevalonate pathway. showed different proteomic profile compared cells, along with altered cytoskeleton dynamics a more...
An inverted pyramidal metasurface was designed, fabricated, and studied at the nanoscale level for development of a label-free pathogen detection on chip platform that merges nanotechnology surface-enhanced Raman scattering (SERS). Based integration synergy these ingredients, virus immunoassay proposed as relevant proof concept very sensitive hepatitis A virus, first time to our best knowledge, in small volume (2 μL), without complex signal amplification, allowing detect minimal...
An integrated magnetic nanosensor based on a niobium dc SQUID (superconducting quantum interference device) for nanoscale applications is presented. The sensor, having washer shape with hole of 200 nm and two Josephson-Dayem nanobridges 80 × 100 nm, consists Nb(30 nm)/Al(30 nm) bilayer patterned by electron beam lithography (EBL) shaped lift-off reactive ion etch (RIE) processes. presence the coils, on-chip tightly coupled to SQUID, allows us easily excite sensor in order get voltage-flux...
Nonlinear chiroptical effects of precisely designed chiral plasmonic nanomaterials can be much stronger than such observed in the linear regime. We take advantage this property to demonstrate use circularly polarized second-harmonic generation microscopy toward efficient read-out a microscopic pattern encoded by an array triangular gold nanoprisms forming arrangements adequate symmetry. Strong are backscattered intensity, enabling clear distinction laterally arranged enantiomers, down nearly...
Prostate cancer (PCa) is a leading cause of cancer-related death among males globally. To date, prostate-specific antigen (PSA), as typical tumour marker, has been widely used in the early diagnosis PCa. However, practical clinical tests, high serum levels PSA show probability for false-positive results, to misdiagnoses. In this study, we developed new classification system PCa, benign prostate hyperplasia (BPH) and healthy subjects by using surface-enhanced Raman scattering (SERS)-based...
In recent decades, there has been a strong and growing interest in developing strategies to engineer materials with tailored optical plasmonic properties. the plethora of geometries studied proposed literature, nanostructures based on cluster arrangements known as "plasmonic molecules" (PMs) have shown several interesting properties represent potential candidates implement different types opto-plasmonic applications. this paper, we examine fractal PM (FPM), analyzing its by numerical...
Au@Ag core–shell nanocubes (NCs) with distinctive SERS performance were synthesized through controlled epitaxial growth strategy.
The development of fast and ultrasensitive methods to detect bacterial pathogens at low concentrations is high relevance for human animal health care diagnostics. In this context, surface-enhanced Raman scattering (SERS) offers the promise a simplified, rapid, high-sensitive detection biomolecular interactions with several advantages over previous assay methodologies. work, we have conceived reproducible SERS nanosensors based on tailored multilayer octupolar nanostructures which can combine...
Technologies based on plasmonic nanostructures are a rapidly growing field that aims to be valid alternative conventional diagnostic tools. One of the main goals in their technological development consists design systems for sensitive and specific detection pathogens water. Among these, rotaviruses represent cause childhood viral gastroenteritis humans. In this work, we functionalized label-free nanosensors localized surface plasmon resonance (LSPR) sensing detect ultralow concentrations...
The interest in the development of nanoscale plasmonic technologies has dramatically increased recent years. photonic properties nanopatterns can be controlled and tuned via their size, shape, or arrangement constituents. In this work, we propose a 2D hybrid metallic polymeric nanostructure based on octupolar framework with enhanced sensing property. We analyze its features both numerically experimentally, demonstrating higher values relevant figures merit: estimated surface-enhanced Raman...
Abstract Plasmonic biosensors are powerful platforms for detecting various types of analytes. Specifically, surface-enhanced Raman spectroscopy (SERS) can enable label-free and selective detection. Shiga toxin-producing Escherichia coli (STEC) represents zoonotic pathogens that cause severe diseases, such as hemolytic uremic syndrome (HUS), the most important acute renal failure in children. To date, there no effective therapies STEC infection, available diagnostic methods complex...
Hollow sea-urchin gold nanoparticles with distinctive optical properties were prepared through a one-step galvanic replacement strategy.
In our bioassay protocol, the Ag@4MBA@DNA-biotin probes were synthesized by linking biotin-modified DNA and 4-mercaptobenzoic acid-covered Ag nanoparticles, Si@Ag@anti-digoxin/digoxin-DNA substrate was fabricated immune of digoxin-DNA anti-digoxin immobilized on a Ag-coated wafer. Then, probes, miRNA-21 constructed into "sandwich structure" to detect variation in SERS signals with respect concentrations. Next, streptavidin extra alternately introduced implement cascade amplification signal...
The properties of the localized surface plasmon resonance (LSPR) and enhanced Raman scattering (SERS) core-shell bimetallic nanostructures, that is monodisperse Au@Ag nanorods with different thickness Ag shell, are theoretically experimental researched. UV-vis-NIR absorption spectra measured displayed their blue-shifts longitudinal peaks increasing concentrations in colloidal solution. And simulated by Finite Element Method (FEM), which agreement measurements reveal LSPR mechanism as varying...
A set of periodic and quasi-periodic Au nanoarrays with different morphologies have been fabricated by using electron beam lithography technique, their optical properties examined experimentally analyzed theoretically scanning near-field microscope finite element method, respectively. Results present that the localized surface plasmon resonance as-prepared exhibit structure-depended characteristics. Comparing nanoarrays, ones demonstrate stronger electric field enhancement, especially for...
Ag@Au hexagonal nanorings synthesized through a one-spot galvanic replacement route and their distinctive LSPR characteristics SERS performance.
Polymeric nanostructured highly conductive films with Photonic Quasi Crystal topologies are presented possibilities to open the path towards efficient white OLEDs.
Polyhedral gold nanocrystals with distinctive geometric-dependent plasmonic properties were prepared through hydrothermal strategy.
A new concept photonic device is realized. It based on the combination of unusual light control properties a Thue-Morse nanopatterned quasi-crystal with extraordinary versatility "smart" soft matter, represented by azo-liquid crystals. The device, which shows dramatic polarization selectivity, can be tuned exploiting either an electro-optical or all-optical mechanism.
A label-free sensitive and specific LSPR immunosensor for imidacloprid detection based on a 2D nanostructured metasurface.