A5000149885- Microfluidic and Capillary Electrophoresis Applications
- Photonic Crystals and Applications
- Random lasers and scattering media
- Surface Modification and Superhydrophobicity
- Nanofabrication and Lithography Techniques
- Micro and Nano Robotics
- Advanced Sensor and Energy Harvesting Materials
- Organic Electronics and Photovoltaics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Microfluidic and Bio-sensing Technologies
- Electrowetting and Microfluidic Technologies
- Analytical Chemistry and Sensors
- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Photonic and Optical Devices
- Molecular Junctions and Nanostructures
- Cultural Heritage Materials Analysis
- Strong Light-Matter Interactions
- Conducting polymers and applications
- Advanced Optical Imaging Technologies
- Thermal Radiation and Cooling Technologies
- Rheology and Fluid Dynamics Studies
- Luminescence and Fluorescent Materials
- Advanced Electron Microscopy Techniques and Applications
- Nonlinear Dynamics and Pattern Formation
Istituto di Nanotecnologia
2016-2024
Institute of Nanotechnology
2022-2024
Sapienza University of Rome
2004-2023
Center for Nano Science and Technology
2021
Istituto Nanoscienze
2005-2014
University of Salento
2007-2012
Institute of Organic Synthesis and Photoreactivity
2010
Italian Institute of Technology
2010
Institute for Advanced Energy Technologies
2008
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2007
Spin-glass theory is one of the leading paradigms complex physics and describes condensed matter, neural networks biological systems, ultracold atoms, random photonics many other research fields. According to this theory, identical systems under conditions may reach different states. This effect known as replica symmetry breaking revealed by shape probability distribution function an order parameter named Parisi overlap. However, a direct experimental evidence in any field still missing....
Wettability control has been widely investigated in the last decades for technological applications such as microfluidic devices and self-cleaning surfaces by modifying both chemical composition geometric structure of surfaces. Inspired typical morphology superhydrophobic leaves (such lotus leaves), we have developed a dual-scale roughness, micro- nanosized, on polydimethylsiloxane (PDMS) By combining different parameters plasma treatment conditions, structures were controlled...
Abstract Optoelectronic and spinoptronic technologies benefit from flexible tunable coherent light sources combining the best properties of nano- material-engineering to achieve favorable such as chiral lasing low threshold nonlinearities. In this work we demonstrate an electrically wavelength- polarization-tunable room temperature polariton laser due emerging photonic spin–orbit coupling. For purpose, design optical cavity filled with both birefringent nematic liquid crystal inorganic...
Superhydrophobic surfaces are gaining considerable interest in a lot of different applications, and nonetheless, precise control over the wettability properties such is still challenge due to difficulties when controlling effects independently induced on superhydrophobicity by chemical topological surface characteristics. We have fabricated engineered superhydrophobic onto poly(dimethylsiloxane) (PDMS) substrates means suitable CF4-plasma treatments. These treatments allowed modification...
In our search for thiophene fluorophores that can overcome the limits of currently available organic dyes in live-cell staining, we synthesized biocompatible dithienothiophene-S,S-dioxide derivatives (DTTOs) were spontaneously taken up by live mouse embryonic fibroblasts and HeLa cells. Upon treatment with DTTOs, cells secreted nanostructured fluorescent fibrils, while cell viability remained unaltered. Comparison behavior other cell-permeant, newly showed formation fibrils was peculiar to...
Random laser emission is obtained from a fluidic paper-based device realized by conventional soft-lithography techniques on common, flexible, renewable and biocompatible commercial paper. The exclusively paper creating microfluidic porous channels the cellulose fibres, in which dye (Rhodamine B) can flow capillarity. modulation of random lasing characteristics, terms threshold spectral position, be tailored acting confinement induced lithographic process as well shape functionalization at...
Membrane-based sensors (MePSs) exhibit remarkable precision and sensitivity in detecting pressure changes. MePSs are commonly used to monitor catalytic reactions solution, generating gas products crucial for signal amplification bioassays. They also allow catalyst quantification by indirectly measuring the generated gaseous products. This is particularly interesting detect enzymes biofluids associated with disease onset. To enhance performance of a MePS, various structural factors influence...
Multicompartment, spherical microcontainers were engineered through a layer-by-layer polyelectrolyte deposition around fluorescent core while integrating ruthenium polyoxometalate (Ru4POM), as molecular motor, vis-à-vis its oxygenic, propeller effect, fuelled upon H2O2 decomposition. The resulting chemomechanical system, with average speeds of up to 25 μm s(-1), is amenable for integration into microfluidic set-up mixing and displacement liquids, whereby the propulsion force velocity regime...
A platform is described for the first time facile synthesis of oligo‐ and polythiophene‐S‐oxides corresponding ‐S,S‐dioxides in short times, mild conditions, high yields. Employing ultrasound assistance, brominated thiophenes are selectively mono‐ or dioxygenated at room temperature. These building blocks then combined with metalated via microwave‐assisted cross‐coupling reactions through a “Lego‐like” strategy to afford unprecedented oligo/polythiophene‐S‐oxides mixed...
We report on a novel kind of transition in random lasers induced by the geometrical confinement emitting material. Different dye doped paper devices with controlled geometry are fabricated soft-lithography and show two distinguished behaviors stimulated emission: absence boundary constraints energy threshold decreases for larger laser volumes showing typical trend diffusive {\it non-resonant} lasers, while when same material lithographed into channels, walls act as cavity resonant} behavior...
Abstract The random laser emission from the functionalized thienyl‐S,S‐dioxide quinquethiophene (T5OCx) in confined patterns with different shapes is demonstrated. Functional patterning of light emitter organic material well defined features obtained by spontaneous molecular self‐assembly guided surface tension driven (STD) lithography. Such controlled supramolecular nano‐aggregates act as scattering centers allowing fabrication one‐component lasers no external resonator and desired shape...
Graphene hydrophobic coatings paved the way towards a new generation of optoelectronic and fluidic devices. Nevertheless, such thin films rely only on graphene non-polar surface, rather than taking advantage its surface roughness. Furthermore, is typically not self-standing. Differently, carbon aerogels have high porosity, large effective area due to their roughness, very low mass density, which make them promising candidate as super-hydrophobic material for novel technological applications....
Microscopic lasers represent a promising tool for the development of cutting-edge photonic devices thanks to their ability enhance light-matter interaction at microscale. In this work, we realize liquid microlasers with tunable emission by exploiting self-formation three-dimensional droplets into polymeric matrix driven viscoelastic dewetting. We design flexible device be used as smart label which is detachable and reusable on various types substrates such paper or fabric. The innovative...
Micropatterning of surfaces is gaining importance in various applications ranging from biosensors to microfluidic and lab-on-a-chip devices, where the control surface chemistry great for application. In this paper, we introduce a patterning technique topographical features, which applicable on different substrates by modifying their energy. The textured obtained via polydimethylsiloxane (PDMS) transfer, parameters can be systematically tailored selective treatment with oxygen plasma either...
Liquid flow in microchannels is completely laminar and uniaxial, with a very low Reynolds number regime long mixing lengths. To increase fluid solubility of reactants, as well to reduce reaction time, complex three-dimensional networks inducing chaotic advection have be designed. Alternatively, turbulence the liquid can generated by active methods (magnetic, acoustic waves, etc.) or adding small quantities elastic materials working liquid. Here, polyelectrolyte multilayer capsules embodying...
The ability to generate, amplify, mix, and modulate sound with no harmonic distortion in a passive opto-acoustic device would revolutionize the field of acoustics. photo-thermo-acoustic (PTA) effect allows transduce light into without any bulk electro-mechanically moving parts electrical connections, as for conventional loudspeakers. Also, PTA devices can be integrated standard silicon complementary metal-oxide semiconductor (CMOS) fabrication techniques. Here, we demonstrate that ultimate...
We propose a technique for the amplification of motile sperm concentration without involving external forces or flows. Our method is validated by microfluidic experiments based on sperms in microstructures and supported numerical simulations.
The synthesis and properties of (5')TA(3')-t5 (8a) (5')CG(3')-t5 (8b) conjugates, in which the self-complementary dinucleotides TA CG are covalently bound to central ring alpha-quinquethiophene (t5), described. According molecular mechanics calculations, preferred conformation both 8a 8b is that with dinucleotide folded over planar t5 backbone, nucleobases facing at stacking distance. calculations show aggregation process driven by a mix nucleobase-thiophene interactions, hydrogen bonding...
Journal Article Physiological formation of fluorescent and conductive protein microfibers in live fibroblasts upon spontaneous uptake biocompatible fluorophores Get access Ilenia Viola, Viola National Nanotechnology Laboratory, Institute Nanoscience CNR (NNL, CNR-NANO), via Arnesano, Lecce, ItalyDept. Physics, Sapienza University, p.le A. Moro 2, Rome, Italy Search for other works by this author on: Oxford Academic Google Scholar Ilaria E. Palamà, Palamà E-mail:...
First demonstration of a perovskite-based device that can be used for tracking and counting minimum-ionizing charged particles. Sensitivity down to single particle (300 MeV electron) crossing methylammonium lead bromide crystal has been obtained.
An ordered and controlled microarray of isolated organic electroluminescent pixels (see Figure) is fabricated by a surface-tension-driven technique. The technique combines the instability liquids, following dewetting phenomena, with geometrical confinement, induced template mesh, to deposit optically active molecules in an fashion. flexibility, ease realization, absence any damaging lithographic step makes this promising for future OLED fabrication.
The fabrication of a green- and red-emitting pixel structure (see figure, scale bar 10 μm) by the single-step, surface-tension-driven assembly single luminescent thiophene-based molecular material is reported. solid-state organization selected oligomer controlled exploiting structural arrangement, induced during dewetting process facilitated great conformational flexibility oligomer, typical several substituted oligothiophenes. Supporting information for this article available on WWW under...