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Like automobiles, aircraft with electric or hybrid propulsion are expected to become available within the next few years. A series of technologies being developed by a startup incubated at the São José dos Campos Technology Park, in the interior of the state of São Paulo, Brazil, could help achieve this goal for the aviation sector sooner. Ocellott is developing batteries and high-voltage electrical distribution systems consisting of electronic boxes, power [...]

In a study published in the Biofuel Research Journal, researchers affiliated with the State University of Campinas (UNICAMP) and the Federal Technological University of Paraná (UTFPR) in Brazil evaluated the efficiency and environmental impact of using corn stover with a technique that uses pure water as the only solvent for extracting bioderivatives. Corn stover, an abundant agricultural by-product often discarded, is rich in lignocellulosic compounds, such as hemicellulose, [...]

A study carried out at the Federal University of ABC (UFABC), in the state of São Paulo, Brazil, presents a new way to mitigate the rapid degradation of perovskite solar cells. The problem, which limits the use of these devices in everyday life, has challenged researchers in the field to find viable solutions. Perovskite solar cells are a very promising photovoltaic technology. They are as efficient as silicon cells and have lower production costs. In addition, they are [...]

A group of researchers affiliated with the Center for Innovation in New Energies (CINE) has developed a method for purifying materials that is simple, economical and has a low environmental impact. The scientists have managed to improve the efficiency of a film that can be used in some green hydrogen production processes. Known as mullite-type bismuth ferrite (Bi ₂ Fe ₄ O ₉), the material has been used as a photoelectrocatalyst in the production of hydrogen by photoelectron oxidation, [...]

Giving a second life to construction materials after demolition, engineers at the University of São Paulo and Princeton have developed an approach for recycling cement waste into a sustainable, low-carbon alternative that is comparable in performance to the industry standard. In addition to lowering the carbon intensity of the cement and concrete industry, the process could enable new uses for construction and demolition waste, of which concrete is a significant component. In 2018 in [...]

A new form of energy-efficient artificial vision system inspired by the human brain and made in part using honey could help reduce the impact of electronic waste. Engineers from the University of Glasgow partnered with researchers from São Paulo State University (UNESP) and Hong Kong Metropolitan University to develop the system, which uses organic, biodegradable and recyclable parts to 'see' and 'remember' colors while drawing a tiny amount of power. The team's [...]

Predicting extreme events is essential to the preparation and protection of vulnerable regions, especially at a time of climate change. The city of Santos on the coast of São Paulo state (Brazil) is Latin America's largest port and has been the focus for significant case studies, not least because of the storm surges that threaten its infrastructure and the local ecosystems. An article reporting the results of a study that focused on a critical part of Santos and used advanced [...]

Just as drivers in Brazil can be warned of traffic congestion ahead or a vehicle parked on the hard shoulder, notifications may soon pop up on their smartphone or on their car’s computer screen to warn them in real time that an anteater, wolf or tapir is crossing the highway. No human will necessarily need to see the animal in question or press a control button to send the warning. For this to be possible, a key step is construction of a computer vision model that automatically detects [...]

In an article published in the Journal of Materials Chemistry C, Brazilian researchers describe a strategy to enhance the efficiency and stability of solar cells made of perovskite, a semiconductor material produced in the laboratory. The results of the project could be highly positive for the future of the solar power sector. Developed by researchers at São Paulo State University (UNESP) in Bauru, Brazil, the method involves the use of a class of materials known as MXenes, a family [...]