Science Daily May 11, 2023 In recent years great strides have been made to design adsorbents to detoxify water, as well as for a related challenge of recovering valuable metals at low concentrations. However, applying nanomaterials at scale and differentiating which nanomaterials are best suited for particular applications can be challenging. Researchers at the Northwestern University have developed a methodology for loading nanomaterial coatings onto adsorbent membranes, testing different coatings against one another, and leveraging these materials under a variety of conditions. The tailored coating for lead remediation, made from manganese-doped goethite nanoparticles, could filter lead from contaminated water to […]
Tag Archives: Nanotechnology
Sound-induced electric fields control the tiniest particles
EurekAlert June 22, 2021 Precisely controlling nanoparticles is a crucial ability for many emerging technologies. Researchers at Duke University used sound waves to create electric fields that provide the push. The new acoustoelectronic tweezer approach works by placing a piezoelectric substrate beneath a small chamber filled with liquid. Four transducers are aligned on the chamber’s sides, which send sound waves into the piezoelectric substrate. These sound waves bounce around and interact with one another to create a stable pattern and create electrical fields which dynamically alternate between positive and negative charges polarizing the nanoparticles in liquid, which serves as a […]
New ‘brick’ for nanotechnology: Graphene Nanomesh
EurekAlert April 20, 2020 Researchers in Japan have demonstrated that large area suspended graphene nanomesh is quickly achievable by the helium ion beam microscopy with sub-10 nm nanopore diameter and well-controlled pitches. Comparing to slow speed TEM patterning, the helium ion beam milling technique overcomes the speed limitation, and meanwhile, provides a high imaging resolution. With the initial electrical measurements, they found that the thermal activation energy of the graphene nanomesh increased exponentially by increasing the porosity of the graphene nanomesh. This immediately provides a new method for bandgap engineering beyond the conventional nanoribbon method. The research provides a practical […]