ramjitti

Researchers at the University of Michigan, Ann Arbor, have made “hedgehog” particles that, surprisingly, can disperse in both hydrophilic and hydrophobic solvents without being treated with surfactants first. The new particles might find applications in areas as diverse as drug delivery and more environmentally friendly paints….. http://nanotechweb.org/cws/article/tech/60001

Metallic rings, or plasmonic ring cavities (PRCs), could be good alternatives to widely used “dimer” or “bowtie” nanoantennas as the light emitting sources in all-optical chip circuits. So say researchers at Imperial College London in the UK who have successfully coupled PRCs to large numbers of semiconducting quantum dots to make hybrid structures that consistently […]

The record efficiency and low-cost production of perovskite solar cells has attracted a great deal of interest in the past few years. Now researchers in the US have developed a solution-processing technique that produces perovskite crystals with millimetre grain sizes – several orders of magnitude larger than the nano- and submicron-crystalline materials produced previously. Larger […]

The organic semiconducting molecule pentacene assumes a rarely observed crystal structure when it grows on a graphene substrate. This new result, from researchers at Stanford University in the US and the Ulsan National Institute of Science and Technology in South Korea, could be important for making devices such as flexible transistors and sensors in the […]

Researchers at Rice University in the US have developed a new type of “nanoantenna” that pushes the sensitivity of a spectroscopy technique called SEIRA to levels never before seen in the lab. The fan-shaped nanostructure could help in the development of systems capable of detecting single molecules using infrared light and so improve the efficiency […]

Solar cells that have pyramid-shaped electrodes absorb much more incoming sunlight than those with traditional, flat electrodes. This is the new result from a team of researchers at the University of Toronto in Canada who have made thin-film “hierarchically structured” devices that boast a power conversion efficiency of 9.2%. The new cells could find use […]

Researchers have used a technique called X-ray photoelectron spectroscopy (XPS) with C60+ sputtering to determine how lithium ions are distributed in nanostructured block polymer electrolyte thin films. These ion-conducting materials are routinely used in a variety of applications including battery and fuel cell membranes, and nanolithography templates…… http://nanotechweb.org/cws/article/tech/59824 Making lamellar PS-POEM lithium-doped thin films