January 16th, 2017
It is reported the magnetic characterization of the Fe3Ga4 intermetallic compound synthesized by the MFNN technique.
Nanowires belong to a new class of quasi-unidimensional materials that have been attracting great interest due to their numerous potential applications, such as functional materials in biomedical sciences, electronics, optics, magnetic devices and energy storage. Among the several ways to produce nanowires, one can mention template-assisted fabrication, vapor-liquid-solid mechanism, molecular beam epitaxy and electrochemical nanolithography.
January 13th, 2017
A detailed analysis highlights several structural complexities of the (BZCY72) perovskite.
High-temperature electrochemical devices exhibiting the preferential transfer of protons have the potential to produce a shift to a sustainable energy economy in which hydrogen replaces hydrocarbon sources as the principal fuel for stationary power and transportation. Protonic ceramic fuel cells (PCFCs), with a proton-conducting ceramic electrolyte membrane, cleanly convert the chemical energy of hydrogen to electrical energy in an intermediate temperature range (773−1023 K).
December 16th, 2016
The results demonstrate for the ﬁrst time the antiviral activity of mSiO2 particles.
Viruses are among the most harmful pathogens and are responsible for the death of millions of people every year. Even after the development of the highly active anti-retroviral therapy which improved the quality of life and increased the life expectancy of patients with AIDS, human immunodeﬁciency virus (HIV) alone was responsible for the death of 1.2 million people in 2014. The development of new strategies to ﬁght viruses is necessary, as antiviral therapies and other eﬃcacious vaccines are not available for many viral diseases.
October 24th, 2016
New catalyst shows a potential for industrial applications requiring durability and high thermal stability.
September 30th, 2016
Hexagonal-shaped Cu2Te nanodisks self-organize into a network of ribbons fully embedded in rr-P3HT thin films.
Hybrid nanocrystal-polymer materials are of great importance for the solution-based fabrication of thin films with tailored optical and electronic properties for sensing, light emission, and photovoltaic applications. The excellent control over size, shape, and composition of inorganic nanocrystals (NCs) allows tuning of their physical properties and makes them interesting materials for devices, ranging from optoelectronics to medicine. On the other hand, polymers can also be synthesized with customized properties to fulfil a wide range of functionalities. Organic electronics has indeed seen a significant progress in the last years thanks to the synthesis of highly performing polymer semiconductors and conductors.
September 15th, 2016
The ﬁrst real-time in situ XANES/EXAFS study of the formation kinetics of Mo-doped and undoped fe oxide NPs.
Doping has led to a revolutionary breakthrough in the design of semicondutor devices. Yet, it is still challenging to introduce dopants in nanoparticles (NPs) in order to access properties unavailable in the undoped materials. Diﬀerent types of interactions between host and dopant are responsible for the properties of doped NPs. The new properties in doped NPs may originate from spin exchange interactions between the dopant and host, presence of long-lived highly isolated electronic states, or simply from high concentration of structural defects.
January 19th, 2016
Although always on our minds – but not so much on our heads –, there is still plenty to be known about the structure and composition of human hair.
November 23rd, 2015
Scientists develop quick method for quantifying ascorbic acid in solutions.
Brazil is world leader in the production and exportation of orange juice. According to the Ministry of Agriculture, the country is responsible for 30% of the world’s annual harvest but 60% of the world’s annual juice production, 90% of which is exported.
November 11th, 2015
Researches look for new materials for extreme ultra-violet lithography.
Cellphones, computers and other omnipresent portable electronic devices owe their existence to the continuous miniaturization of electronic circuits, which begun with the invention of the transistor, in 1947. Responsible for turning on and off or amplifying an electrical current, the transistors replaced the big and fragile vacuum tubes that made the first digital computers occupy whole rooms of even whole buildings.