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Berkeley Lab Researchers Observe 1D Edge States Critical to Nanoelectronic and Photonic Applications

The drive to develop ultrasmall and ultrafast electronic devices using a single atomic layer of semiconductors, such as transition metal dichalcogenides, has received a significant boost. Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have recorded the first observations of a strong nonlinear optical resonance along the edges of a single layer of molybdenum disulfide. The existence of these edge states is key to the use of molybdenum disulfide in nanoelectronics, as well as a catalyst for the hydrogen evolution reaction in fuel cells, desulfurization and other chemical reactions. (more…)

Berkeley Lab Researchers Create Nanoscale Waveguide for Future Photonics

By Guest PostJune 3, 2011Sciencebio medical sensing, electromagnetic waves, guy bartal, hybrid plasmon polariton, microprocessors, nanoscale lasers, nanoscale photonic applications, nanoscale waveguides, near field scanning optical microscopy, next generation on chip optical communication systems, nsom, optical computing, photonic circuits, photonic devices, plasmons, quasiparticle, rupert oulton, semiconductor, silicon on insulator platform, soi, spp, surface plasmon polariton, volker sorger, xiang zhang, xiaobo yin, yuan wang, ziliang ye

The creation of a new quasiparticle called the “hybrid plasmon polariton” may throw open the doors to integrated photonic circuits and optical computing for the 21^st century. Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have demonstrated the first true nanoscale waveguides for next generation on-chip optical communication systems.

“We have directly demonstrated the nanoscale waveguiding of light at visible and near infrared frequencies in a metal-insulator-semiconductor device featuring low loss and broadband operation,” says Xiang Zhang, the leader of this research. “The novel mode design of our nanoscale waveguide holds great potential for nanoscale photonic applications, such as intra-chip optical communication, signal modulation, nanoscale lasers and bio-medical sensing.” (more…)

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Edgy Look at 2D Molybdenum Disulfide

Berkeley Lab Researchers Create Nanoscale Waveguide for Future Photonics