Hybrid Nano-probe Can Detect Live Cancer Cells

A new hybrid nano-probe that could lead to noninvasive detection and treatment of cancer at the level of a single cell has been developed by a University of Southern California scientist. Fabien Pinaud, assistant professor of biological sciences, chemistry and physics and astronomy at USC Dornsife, created a method for amplifying a biochemical signal on the surface of cancer cells. The new technique binds and assembles gold nanoparticles in living cells using two fragments of a fluorescent protein as “molecular glue. [Read More]

Diamond Nitrogen-vacancy Centers Power World's Smallest Radio Receiver

A tiny radio whose building blocks are the size of two atoms has been developed by Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences. Built out of an assembly of atomic-scale defects in pink diamonds, it is the world’s smallest radio receiver. The device can withstand extremely harsh environments and is biocompatible, meaning it could work anywhere from a probe on Venus to a pacemaker in a human heart. [Read More]

2 Photon Quantum Interference In A Paint Drop

Light is scattered within a drop of paint so frequently that it would seem impossible to demonstrate quantum effects. But despite the thousands of possible paths the light can take, like a water molecule in a waterfall, researchers of the University of Twente have demonstrated that there are only two exits. Depending on the light pattern that enters the paint, two photons always come out through the same exit, or through different ones, almost as though they avoid each other. [Read More]

Smartphone Display Lighting Can Activate Live Cells

Lighting technology used in smartphone displays is able to activate live cells that are genetically programmed to respond to light, scientists at the University of St Andrews have revealed. The findings as “a bit like cells watching TV”, in the words of Professor Malte Gather from the School of Physics and Astronomy, who led the research. Using the ability of organic light emitting diodes (OLEDs) to “switch on” individual cells in the lab opens the door to cell-specific optogenetic control in cultured neuronal networks, brain slices, and other biomedical research applications. [Read More]

Metamaterial Tapered Waveguide on a Chip may boost Solar Cell efficiency

In breakthrough photonics research from University at Buffalo, a nanoscale microchip component called a “multilayered waveguide taper array” has been demonstrated that absorbs each frequency of light at different places vertically to catch a “rainbow” of wavelengths, or broadband light. Unlike current chips, the waveguide contains specialized tapers, the thimble-shaped structures pictured here. The work opens up new possibilities for more efficient photovoltaic cells, improved radar and stealth technology and new ways to recycle waste heat generated by machines into energy. [Read More]

Tying Liquid Crystals in Knots with Miniature Möbius Strips

Researchers hoping to understand how liquid crystal’s unique properties can be harnessed in the next generation of advanced materials and photonic devices have shown how to tie the material into knots. Using a miniature Möbius strip made from silica particles, University of Warwick scientists literally tied liquid crystals in knots, by modifying the alignment of the long, thin, rod-like molecules that line up to all point in the same direction. [Read More]

Hyperbolic Metamaterial Waveguide for Rainbow Trapping

Buffalo University researchers have created an advanced waveguide which could lead to breakthroughs in stealth technology and solar energy. Their hyperbolic metamaterial waveguide is basically a sophisticated microchip made from alternating ultra-thin films of metal and semiconductors and/or insulators. The waveguide stops and eventually absorbs every light frequency, at somewhat different points in a vertical axis, to capture a rainbow of wavelengths. “Electromagnetic absorbers have been studied for many years, especially for military radar systems,” said Qiaoqiang Gan, PhD, an assistant professor at UB,. [Read More]