A5014129768- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Electron and X-Ray Spectroscopy Techniques
- Advanced Electron Microscopy Techniques and Applications
- Advanced Condensed Matter Physics
- X-ray Diffraction in Crystallography
- nanoparticles nucleation surface interactions
- Quantum Dots Synthesis And Properties
- Multiferroics and related materials
- Silicon and Solar Cell Technologies
- Gas Sensing Nanomaterials and Sensors
- Chalcogenide Semiconductor Thin Films
- ZnO doping and properties
- Magnetic properties of thin films
- Gold and Silver Nanoparticles Synthesis and Applications
- Semiconductor materials and interfaces
- Catalytic Processes in Materials Science
- Silicon Nanostructures and Photoluminescence
- Ferroelectric and Piezoelectric Materials
- Nanomaterials for catalytic reactions
- Semiconductor Quantum Structures and Devices
- Crystallization and Solubility Studies
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Fluorescence Microscopy Techniques
- Advanced Thermoelectric Materials and Devices
Institute of Nanostructured Materials
2005-2025
Institute of Structure of Matter
2025
Institute for Microelectronics and Microsystems
2015-2024
National Research Council
1995-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2008-2023
National Institute of Advanced Industrial Science and Technology
2020
South Central Minzu University
2020
National Academies of Sciences, Engineering, and Medicine
2016
Bologna Research Area
2000-2013
University of Parma
2004-2011
We report here on a detailed study PbS colloidal quantum dots. A characterization via X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) allowed us to reliably determine the diameter shape of nanocrystals. These data, together with second-derivative analysis absorption spectra, size dependence seven transitions in spectrum; some these were identified basis their normalized confinement energy. The first excitonic transition was best modeled by four-band...
Schlanker mit Erfolg! Im Kolloidzustand stabile ultradünne Bi2S3-Nanodrähte (siehe Bild) ausgeprägten exzitonischen Eigenschaften, wie sie in Bismutchalkogeniden noch nie beobachtet wurden, und extrem hohen Extinktionskoeffizienten wurden Gramm-Mengen synthetisiert. Nanostrukturen diese haben ein großes Potenzial für thermoelektrische Anwendungen. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2008/z705034_s.pdf or from author....
Bi2S3 colloidal nanocrystals have been synthesized through a heterogeneous gram-scale hot-injection method yielding low-polydispersity, shape-controlled product (dots or rods). Plasma polymerization of nanocrystal assemblies into flexible films is demonstrated (see figure) and characterized.
Reversible hydrogen sorption coupled with the MgH2 ↔ Mg phase transformation was achieved in remarkably low 340–425 K temperature range using MgH2–TiH2 composite nanoparticles obtained by reactive gas-phase condensation of Mg–Ti vapors under He/H2 atmosphere. The equilibrium pressures determined situ measurements at were slightly above those predicted enthalpy ΔH and entropy ΔS bulk magnesium. A single van't Hoff fit over a extended up to 550 yields thermodynamic parameters = 68.1 ± 0.9...
After cellulose, lignin is the most abundant plant-derived polymer in nature. It provides mechanical support to plants, but it has also a defense role against pests and diseases, thanks antioxidant, bactericidal, antifungal properties, deriving from its polyphenolic Huge quantities of technical lignins are obtained during several industrial processes they actually represent waste paper pulp bioethanol industry. Although last decades many efforts have been directed obtain valorization fields...
The BiMnO3 perovskite is a very interesting multiferroic material that, once synthesized at high pressure and temperature, survives as metastable phase ambient conditions. We investigated ceramic samples prepared in different conditions (temperature, pressure, composition), the existence of polymorphism room temperature was clearly evidenced by electron diffraction high-resolution microscopy all samples. A new polymorph, characterized distortion basic cell, found to coexist minor with...
Despite its high chemical value, most of lignin is nowadays burnt as low value fuel. It therefore important to find innovative applications for use. Copper compounds are used plant protection products more than 50 different diseases in viticulture, arable crops, hops, and horticulture, they have been 100 years. Minimization copper agriculture has become a fundamental issue due negative environmental impact. Here we present series hybrid organic–inorganic materials (lignin@Cu), deriving from...
Silver nanoparticles (AgNPs) hold great promise in biomedical applications due to their unique properties and potential for specific tissue targeting. However, the clinical translation of nanoparticle-based therapeutics remains challenging, primarily an incomplete understanding how nanoparticle influence interactions at nano-bio interface, as well role surface-adsorbed proteins (i.e. protein corona) modulating nanoparticle-cell interactions. This study demonstrates that surface charge has a...
Silver nanoparticles (AgNPs) hold great promise in biomedical applications due to their unique properties and potential for specific tissue targeting. However, the clinical translation of nanoparticle-based therapeutics remains challenging, primarily an incomplete understanding how nanoparticle influence interactions at nano-bio interface, as well role surface-adsorbed proteins (i.e. protein corona) modulating nanoparticle-cell interactions. This study demonstrates that surface charge has a...
The crystal structure of Ti(2)P has been analysed using electron diffraction and high-resolution electron-microscopy techniques. A new unit cell was found, the compound is hexagonal with a = 19.969 (1) c 3.4589 A. first solved in space group P-62m projection direct methods on data from [001] zone axis. three-dimensional solution obtained again but set recorded precession technique. distorted Fe(2)P and, based images, it possible to explain that tripling due ordering P vacancies reduces symmetry P-6.
The multiferroic perovskite BiMnO3, synthesized under high-pressure conditions, decomposes if heated at room-pressure in the temperature range of 500−650 °C. Comparative studies by high-temperature X-ray diffraction, electron thermal analysis, and magnetic investigation revealed existence a complex pathway to decomposition, depending on heating rate, pressure, atmosphere that involves different metastable phases. In particular as-prepared monoclinic phase (I) transforms second form (II) 210...
The influence of the perturbed reference wave in electron holography is considered for case static electromagnetic microfields, whose extension around observed specimen cannot be neglected. These microfields are called ‘‘long-range’’ to distinguish them from ‘‘short-range’’ ones, strictly limited within object and hence do not perturb wave. Optical reconstructions experimental holograms simple electrostatic or magnetic long-range fields have been modeled simulated. results indicate that...
Low-melting-point metal nanoparticles show remarkable undercoolings: exceptional values ΔT∕Tm≅0.5 were previously reported for confined Ga droplets in the 100–1000nm range. This was considered a characteristic limiting temperature Ga. We here give evidence that 3–15nm range can be undercooled at least down to 90K (ΔT∕Tm⩾0.7) without crystallization. Since computations and experiments on clusters with <50 atoms contrary signatures of melting temperatures well above bulk value, result...
Crack-free, ligand-free, phase-pure nanostructured solids, using colloidal nanocrystals as precursors, are fabricated by a scalable and facile approach. Films produced this approach have conductivities comparable to those of bulk crystals over more than 1 cm (1.370 S cm-1 for PbS films).
Bright and nontoxic quantum dots (QDs) are highly desirable in a variety of applications, from solid-state devices to luminescent probes assays. However, the processability these species is often curbed by their surface chemistry, which limits dispersibility selected solvents. This renders modification step mandatory make QDs compatible with solvent interest. Here, we present new synthetic approach produce CuInS2 organic polar solvents readily usable for preparation composite materials....
Abstract Charge transport in organic semiconductors is notoriously extremely sensitive to the presence of disorder, both internal and external (i.e., related interactions with dielectric layer), especially for n‐type materials. Internal dynamic disorder stems from large thermal fluctuations intermolecular transfer integrals (molecular) site energies weakly interacting van der Waals solids sources transient localization charge carriers. The molecular vibrations that drive typically operate at...