Publicaciones etiquedatas ‘nanoparticles’

28
septiembre
2011

Nanopartículas a partir de crustáceos

Desarrollo de nanopartículas a partir de crustáceos para eliminar contaminantes tipo pesticidas usados en la agricultura y que por acción de la lluvia estos lixiviados llegan a los mantos acuíferos, ríos y lagos.

When Flavio Campagnaro bought brewing equipment from an auction at a closing Molson factory in Edmonton, Alberta, Canada, it wasn’t with the intention of brewing up batches of homemade beer. Instead he’s using the drums too cook up something far more potent: pesticides.

Campagnaro is the vice president of manufacturing for ViveNano, a biotech startup that’s hoping its technology can help diminish residual chemicals in agricultural runoff. Traditional pesticides, including those used on organic crops, require what ViveNano’s CEO Keith Thomas calls a “soup of chemicals” to become water-soluble streams capable of killing weeds and other pests.

And you likely know the rest of the story – it rains, and these chemicals drain from the fields into groundwater, rivers, lakes, and streams, where they wreak havoc on the ecosystem, drinking water, and oceans.

28
septiembre
2011

Angulo de contacto en nanopartículas

Investigadores del Laboratory of Surface Science and Technology en ETH Zurich desarrollan técnica para medir ángulo de contacto en nanopartículas tan pequeñas como 10nm.

Contact angle is parameter essentially required for production of new material as it contains all vital information for predicting the behavior of the nanoparticles and now researchers at the Laboratory of Surface Science and Technology at ETH Zurich has successfully developed a procedure for measuring contact angle for nanoparticles as small as 10 nm.

The research finding has been recently published in the journal Nature Communications, where the researchers claim that they have studied liquid or fluid interfaces. Both hydrophilic and hydrophobic materials in the range of few nanometers were studies. The present method doesn’t allow measuring the contact angle below 500 nm and now researchers claim to have measured the contact angle even for very small and well below 500 nm nanoparticles.