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Dagold Info (Nigéria)
Em 2023: 0 notícias
Desde 1995: 10 notícias
Model describes interactions between light and mechanical vibration in microcavities
Publicado em 02 março 2021
Optomechanical microcavities are extremely small structures with diameters of less than 10 micrometers (about a tenth of a human hair) inside which light and mechanical vibrations are confined. Thanks to their small size and to efficient microfabrication techniques that enable them to hold intense light energy and interact with mechanical waves, microcavities can be used as mass and acceleration sensors and in Raman scattering (a spectroscopy technique deployed to analyze materials, including [...]
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Scientists create flexible biocompatible cilia that can be controlled by a magnet
Publicado em 10 fevereiro 2021Researchers at the University of Campinas’s Chemistry Institute (IQ-UNICAMP) in the state of São Paulo, Brazil, have developed a template-free technique to fabricate cilia of different sizes that mimic biological functions and have multiple applications, from directing fluids in microchannels to loading material into a cell, for example. The highly flexible cilia are based on polymer-coated iron oxide nanoparticles, and their motion can be controlled by a magnet. In nature, cilia [...]ver notícia -
Device refines analysis of materials for fuel cells and batteries
Publicado em 22 dezembro 2020A new device designed to help scientists study in detail what happens during electrochemical reactions has been developed by researchers at the Center for Innovation in New Energies (CINE) in collaboration with researchers at the Brazilian Synchrotron Light Laboratory (LNLS), a unit of the Brazilian Center for Research in Energy and Materials (CNPEM). CINE is an Engineering Research Center (ERC) established by FAPESP (São Paulo Research Foundation) and Shell and is hosted by the [...]ver notícia -
Industrial Waste Is Reused To Produce Alternatives To Plastic
Publicado em 14 dezembro 2020In Brazil, researchers at São Paulo State University (UNESP) in Ilha Solteira have developed a film that can replace plastic in food packaging. The film is made from hydroxypropyl methylcellulose (HPMC) and bacterial cellulose scraps left over from industrial processing. Both raw materials are sustainable. They are combined to produce a biodegradable film of bacterial cellulose nanocrystals and HPMC. The product outperforms film made of HPMC alone. An article on the research project, [...]ver notícia -
Researchers create ingredients to produce food by 3-D printing
Publicado em 07 dezembro 2020It is already possible to produce food with a 3-D printer, potentially delivering products that suit consumer preferences regarding taste, texture, cost, convenience and nutrition. In the near future, it will be possible to produce food with personalized shapes, textures, flavors and colors considered attractive and healthy for children and the elderly, for example. A group of researchers at the University of São Paulo’s Luiz de Queiroz College of Agriculture (ESALQ-USP) in [...]ver notícia -
Plastic film protects surfaces against novel coronavirus on contact
Publicado em 18 outubro 2020An adhesive plastic film designed to protect surfaces such as doorknobs, handrails, elevator buttons, and touch screens inactivates the novel coronavirus on contact. The manufacturer of the film is Promaflex. It has nanoparticles of silver and silica built into its polyethylene structure, thanks to technology developed by Nanox (https://en.nanox.com.br/), a Brazilian company based on São Paulo and supported by São Paulo Research Foundation, through FAPESP’s Innovative [...]ver notícia -
Researcher creates an ultra-simple inexpensive method to fabricate optical fiber
Publicado em 10 setembro 2020A novel process to fabricate special optical fiber that is far simpler, faster and cheaper than the conventional method has been developed by Cristiano Cordeiro, a researcher and professor at the University of Campinas’s Physics Institute (IFGW-Unicamp) in the state of São Paulo, Brazil. Cordeiro created the innovation during a research internship at the University of Adelaide in Australia, supported by a scholarship from São Paulo Research Foundation—FAPESP and by a [...]ver notícia -
Researchers develop flat lens a thousand times thinner than a human hair
Publicado em 24 agosto 2020A lens that is a thousand times thinner than a human hair has been developed in Brazil by researchers at the University of São Paulo’s São Carlos School of Engineering (EESC-USP). It can serve as a camera lens in smartphones or be used in other devices that depend on sensors. “In the present technological context, its applications are almost unlimited,” Emiliano Rezende Martins, a professor in EESC-USP’s Department of Electrical Engineering and Computing [...]ver notícia -
Enzyme cocktail developed in Brazil powers production of second-generation ethanol
Publicado em 18 agosto 2020Researchers at the Brazilian Center for Research in Energy and Materials (CNPEM) have genetically engineered a fungus to produce a cocktail of enzymes that break down the carbohydrates in biomass, such as sugarcane trash (tops and leaves) and bagasse, into fermentable sugar for industrially efficient conversion into biofuel. The development of low-cost enzyme cocktails is one of the main challenges in producing second-generation ethanol. Second-generation biofuels are manufactured from [...]ver notícia -
Theoretical study shows that matter tends to be ordered at low temperatures
Publicado em 11 agosto 2020Classical phase transitions are governed by temperature. One of the most familiar examples is the phase transitions of water from solid to liquid to gas. However, other parameters govern phase transitions when temperatures approach absolute zero, including pressure, the magnetic field, and doping, which introduce disorder into the molecular structure of a material. This topic is treated from the theoretical standpoint in the article “Unveiling the physics of the mutual interactions in [...]ver notícia