A5059307028- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Thermal Radiation and Cooling Technologies
- Metamaterials and Metasurfaces Applications
- Nanofabrication and Lithography Techniques
- Nanotechnology research and applications
- Mechanical and Optical Resonators
- Orbital Angular Momentum in Optics
- Advanced biosensing and bioanalysis techniques
- Solar-Powered Water Purification Methods
- Photonic and Optical Devices
- Laser-Ablation Synthesis of Nanoparticles
- Nonlinear Optical Materials Studies
- Nanowire Synthesis and Applications
- Analytical Chemistry and Sensors
- Graphene and Nanomaterials Applications
- Photonic Crystals and Applications
- Quantum Dots Synthesis And Properties
- Molecular Junctions and Nanostructures
- Neuroscience and Neural Engineering
- Force Microscopy Techniques and Applications
- Nanoporous metals and alloys
- Copper-based nanomaterials and applications
- Advanced MEMS and NEMS Technologies
- Nanopore and Nanochannel Transport Studies
Rice University
2016-2025
Chemnitz University of Technology
2022
Superconducting and other Innovative Materials and Devices Institute
2022
University of Genoa
2022
Systems Engineering Research Center
2021
Italian Institute of Technology
2012-2017
Polytechnic University of Turin
2012
Technical University of Denmark
2009-2010
Politecnico di Milano
2009
Ørsted (Denmark)
2009
With more than a billion people lacking accessible drinking water, there is critical need to convert nonpotable sources such as seawater water suitable for human use. However, energy requirements of desalination plants account half their operating costs, so alternative, lower approaches are equally critical. Membrane distillation (MD) has shown potential due its low temperature and pressure requirements, but the requirement heating input makes it intensive. Here, we demonstrate...
The rational combination of plasmonic nanoantennas with active transition metal-based catalysts, known as 'antenna-reactor' nanostructures, holds promise to expand the scope chemical reactions possible photocatalysis. Here, we report earth-abundant embedded aluminum in cuprous oxide antenna-reactor heterostructures that operate more effectively and selectively for reverse water-gas shift reaction under milder illumination than conventional thermal conditions. Through rigorous comparison...
Surface-enhanced infrared absorption (SEIRA) spectroscopy has outstanding potential in chemical detection as a complement to surface-enhanced Raman (SERS), yet it historically lagged well behind SERS sensitivity. Here we report new ultrasensitive antenna designed bring SEIRA into the few-molecule range. Our consists of bowtie-shaped Au structure with sub-3 nm gap, positioned create cavity above reflective substrate. This three-dimensional geometry tightly confines incident mid-infrared...
The field of plasmonics is capable enabling interesting applications in different wavelength ranges, spanning from the ultraviolet up to infrared. choice plasmonic material and how nanostructured has significant implications for ultimate performance any device. Artificially designed nanoporous metals (NPMs) have properties including large specific surface area, distinctive optical properties, high electrical conductivity, reduced stiffness, implying their potentials many applications. This...
In utero electroporation is a powerful tool to transfect and manipulate neural-precursor cells of the rodent parietal cortex their progeny in vivo. Although this technique can potentially target numerous brain areas, reliability transfection some regions low or physical access limited. Here we present new configuration based on use three electrodes, relative position polarities which be adjusted. The allows easy exceedingly reliable monolateral bilateral at locations that could only...
The ever-increasing global need for potable water requires practical, sustainable approaches purifying abundant alternative sources such as seawater, high-salinity processed water, or underground reservoirs. Evaporation-based solutions are of particular interest treating high salinity since conventional methods reverse osmosis have increasing energy requirements higher concentrations dissolved minerals. Demonstration efficient evaporation with heat localization in nanoparticle under solar...
Nanoparticles (NPs) are increasingly used in biomedical applications, but the factors that influence their interactions with living cells need to be elucidated. Here, we reveal role of NP surface charge determining neuronal and electrical responses. We discovered negatively charged NPs administered at low concentration (10 nM) interact membrane synaptic cleft, whereas positively neutrally never localize on neurons. This effect is shape material independent. The presence cell membranes...
A promising trend in plasmonics involves shrinking the size of plasmon-supporting structures down to a few nanometers, thus enabling control over light–matter interaction at extreme-subwavelength scales. In this limit, quantum mechanical effects, such as nonlocal screening and quantization, strongly affect plasmonic response, rendering it substantially different from classical predictions. For very small clusters molecules, collective modes are hard distinguish other excitations...
Abstract Solar-thermal technologies for converting chemicals using thermochemistry require extreme light concentration. Exploiting plasmonic nanostructures can dramatically increase the reaction rates by providing more efficient solar-to-heat conversion broadband absorption. Moreover, hot-carrier and local field enhancement effects alter pathways. Such discoveries have boosted of photothermal catalysis, which aims at driving industrially-relevant chemical reactions solar illumination rather...
Abstract Nanoporous metals are a class of nanostructured materials finding extensive applications in multiple fields thanks to their unique properties attributed high surface area and interconnected nanoscale ligaments. They can be prepared following different strategies, but the deposition an arbitrary pure porous metal is still challenging. Recently, dry synthesis nanoporous films based on plasma treatment thin layers deposited by physical vapour has been demonstrated, as general route...
Periodic and reproducible gold nanocuboids with various matrix dimensions different inter-particle gaps were fabricated by means of top-down technique. Rhodamine 6G was used as a probe molecule to optimize the design fabrication cuboid nanostructures. The electric field distribution for varying dimensions/inter-particle gap also investigated. These SERS devices employed biosensors through investigation both myoglobin wild/mutated peptides. results demonstrate probing screening BRCA1...
Conventional bioethanol for transportation fuel typically consumes agricultural feedstocks also suitable human consumption and requires large amounts of energy conversion feedstock to fuel. Alternative feedstocks, optimally those not in demand consumption, off-grid sources processing would both contribute making far more sustainable than current practices. Cellulosic production involves three steps: the extraction sugars from cellulosic feedstock, fermentation produce ethanol, purification...
Carbon-doped TiO2-bronze nanowires were synthesized via a facile doping mechanism and exploited as active material for Li-ion batteries. We demonstrate that both the wire geometry presence of carbon contribute to high electrochemical performance these materials. Direct example reduces diffusion length improves electrical conductivity wires, demonstrated by cycling experiments, which evidenced remarkably higher capacities superior rate capability over undoped nanowires. The as-prepared...
Abstract Plasmonic nanostructures have attracted considerable attention for their ability to couple with light and provide strong electromagnetic energy confinement at subwavelength dimensions. The absorbed portion of the captured can lead significant heating both nanostructure its surroundings, resulting in a rich set nanoscale thermal processes that defines subfield thermoplasmonics applications ranging from nanochemistry nanobiology optoelectronics. Recently, phononic started attract as...
Memristive-based electro-optical neuromorphic hardware takes advantage of both the high-density electronic circuits and high bandwidth their photonic counterparts, thus showing potential for low-power artificial intelligence applications. In this Perspective paper, we introduce a class memristors that can emulate key properties synapses neurons, which are essential features realization functionalities. We then describe challenges associated with existing technologies finally give our...
Photocatalysis with plasmonic nanostructures has lately emerged as a transformative paradigm to drive and alter chemical reactions using light. At the surface of metallic nanoparticles, photoexcitation results in strong near fields, short-lived high-energy "hot" carriers, light-induced heating, thus creating local environment where can occur enhanced efficiencies. In this context, it is critical understand how manipulate nonequilibrium processes triggered by light, their ultrafast (femto-...
The localized surface plasmon resonance of metal nanoparticles allows confining the eletromagnetic field in nanosized volumes, creating high-field "hot spots", most useful for enhanced nonlinear optical spectroscopies. commonly employed metals, Au and Ag, yield resonances only spanning visible/near-infrared range. Stretching upward, energy range plasmonics requires exploiting different materials. Deep-ultraviolet happen to be achievable with one cheapest abundant materials available:...
Abstract The exploitation of surface plasmon polaritons has been mostly limited to the visible and near infrared range, due low frequency limit for coherent excitation reduction confinement on metal lower energies. In this work we show that 3D - out plane nanostructures can considerably increase intrinsic quality optical output, light electric field enhancement factors, also in mid-infrared. We suggest physical principle relies combination far interactions between neighboring antennas,...