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Study could help develop biosensors for non-invasive diagnosis of diseases
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The efficacy of biosensors used in clinical tests depends critically on the surface of the device on which the biorecognition molecules are immobilized. This surface can be adjusted and sometimes controlled using self-assembled molecular monolayers as matrices. The monolayers are films made up of organic molecules that under the right conditions assemble spontaneously on metal surfaces via chemical bonds between the sulfur atoms and the metal.
A study conducted at the University of São [...]
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Project investigates remote control of enzymes using light
Publicado emProject investigates remote control of enzymes using light by José Tadeu Arantes , FAPESP The activity of enzymes in industrial processes, laboratories, and living beings can be remotely controlled using light. This requires their immobilization on the surface of nanoparticles and irradiation with a laser. Near-infrared light can penetrate living tissue without damaging it. The nanoparticles absorb the energy of the radiation and release it back in the form of heat or [...]ver notícia -
Use of perovskite will be a key feature of the next generation of electronic appliances
Publicado emQuantum dots are manmade nanoparticles of semiconducting material comprising only a few thousand atoms. Because of the small number of atoms, a quantum dot’s properties lie between those of single atoms or molecules and bulk material with a huge number of atoms. By changing the nanoparticles’ size and shape, it is possible to fine-tune their electronic and optical properties – how electrons bond and move through the material, and how light is absorbed and emitted by [...]ver notícia -
Plastic film protects surfaces against novel coronavirus on contact
Publicado em 16 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