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nawi graz researchers measure light fields in 3-d




light as a carrier of information is indispensable to modern communication technology. the controlled manipulation of light quanta, so-called photons, form the basis for wireless transmission or data transfer in optical glass fibres. due to the wave-like nature of light and its diffraction limit, ho...



plasmon-powered upconversion nanocrystals for enhanced bioimaging and polarized




lanthanide-doped upconversion nanocrystals (ucncs) have recently found great potential in the applications of near-infrared bioimaging and nonlinear optoelectronic devices due to their tunable spectral characteristics and excellent photostability. in particular, their near-infrared excitation bands ...



uc researchers use gold coating to control luminescence of nanowires




in electronics, the race for smaller is huge. physicists at the university of cincinnati are working to harness the power of nanowires, microscopic wires that have the potential to improve solar cells or revolutionize fiber optics. nanotechnology has the potential to solve the bottleneck that occurs...



nanophysics: saving energy with a spot of silver




tomorrow's computers will run on light, and gold nanoparticle chains show much promise as light conductors. now ludwig-maximilians-universitaet (lmu) in munich scientists have demonstrated how tiny spots of silver could markedly reduce energy consumption in light-based computation. today's computers...



nanophotonics team creates low-voltage, multicolor, electrochromic glass




adding and removing an electron from neutral perylene (center column) produces an anion (left) and cation (right), respectively, with different electronic structures (middle row). upon excitation with visible light, the anion and cation give rise to two unique molecular plasmon resonances, each with...



ultra-compact phase modulators based on graphene plasmons




image: this is a phase modulation due to a local wavelength change. view more credit: achim woessner/icfomodulating the amplitude and phase of light is a key ingredient for many of applications such as wavefront shaping, transformation optics, phased arrays, modulators and sensors. performing this...