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nanoGUNE research appears on Nature Photonics cover

Nature Photonics
15/04/2016

Researchers from CIC nanoGUNE, in collaboration with ICFO and Graphenea, visualised for the first time how light is trapped by nanostructures made of graphene.

Nanolight at the edge

Near-field image of a rectangle graphene nanoresonator (Image: nanoGUNE)
21/03/2016

Researchers from CIC nanoGUNE, in collaboration with ICFO and Graphenea, have demonstrated how infrared light can be captured by nanostructures made of graphene. This happens when light couples to charge oscillations in the graphene. The resulting mixture of light and charge oscillations – called plasmon - can be squeezed into record-small volumes – millions times smaller than in conventional dielectric optical cavities. This process has been visualized by the researchers now, for the first time, with the help of a state-of the-art near-field microscope and explained by theory. Particularly, the researchers identified two types of plasmons - edge and sheet modes - propagating either along the sheet or along the sheet edges. The edge plasmons are unique for their ability to channel electromagnetic energy in one dimension. The work - funded by the EC Graphene Flagship and reported in Nature Photonics - opens new opportunities for ultra-small and efficient photodetectors, sensors and other photonic and optoelectronic nanodevices.

New tool for non-invasive quality control of graphene devices

06/03/2016

Researchers from the Nanooptics group at CIC nanoGUNE in collaboration with colleagues at ICFO - The Institute of Photonic Sciences (Catalunya) developed a new non-invasive room-temperature technique for graphene device characterization. This work has been funded by the EC Graphene Flagship and was recently reported in Nature Communications.

Tracking slow nanolight in natural hyperbolic metamaterial slabs

Measured dispersion (energy versus momentum diagram) of hyperbolic phonon polaritons in boron nitride.
15/09/2015

Researchers from the Nanooptics and the Nanodevices groups at CIC nanoGUNE (Basque Country) in collaboration with colleagues at ICFO - The Institute of Photonic Sciences (Catalunya) have imaged how light moves inside an exotic class of matter known as hyperbolic materials. They observed, for the first time, ultraslow pulse propagation and backward propagating waves in deep subwavelength-scale thick slabs of boron nitride – a natural hyperbolic material for infrared light. This work has been funded by the EC Graphene Flagship and was recently reported in Nature Photonics and highlighted as a News&Views.

nanoGUNE Scholarship: call for Master Thesis students

24/06/2015

NanoGUNE offers 4 scholarships to students of the Master in Nanoscience and the Master in New Materials of the UPV/EHU choosing Master thesis subjects within one of nanoGUNE's research groups.

Nanoscale Infrared Near-Field Spectroscopy, PHD thesis by Florian Huth

Florian Huth
26/05/2015

Florian Huth, Pre-doctoral Researcher at the Nanooptics Group at nanoGUNE, receives his PhD at the University of the Basque Country (UPV/EHU) after the defense of his thesis project on Monday 25 May 2015. Hir research work, entitled Nanoscale Infrared Near-Field Spectroscopy", has been developed under the supervision of the Nanooptics Group Leader and Ikerbasque Research Professor Dr. Rainer Hillenbrand.

Pablo Alonso-González, Winner of the RSEF-BBVA Foundation 2014 prize

17/02/2015

The nanoGUNE researcher Pablo Alonso-González has been awarded the RSEF-BBVA Foundation 2014 prize for Physics in the New Researchers in Experimental Physics category. Alonso-González works in this center’s Nanooptics group in Donostia-San Sebastian and his research is currently focussing on the optical properties of graphene at the nanoscale. The researcher was the first to obtain guided light imaging in this material with nanometric precision, and his work was published by the journal Nature.

Nature Materials: Graphene plasmons go ballistic

17/02/2015

Squeezing light into tiny circuits and controlling its flow electrically is a holy grail that has become a realistic scenario thanks to the discovery of graphene. This tantalizing goal is realized by exploiting so-called plasmons, in which electrons and light move together as one coherent wave. Plasmons guided by graphene -a two-dimensional sheet of carbon atoms – are remarkable as they can be confined to length scales of nanometers, one to two hundred times below the wavelength of light. However, until now these plasmons were found to rapidly lose energy, limiting the range over which they could travel.

The Ludwig-Genzel-Prize 2014 is awarded to Rainer Hillenbrand

16/07/2014

The Ludwig-Genzel-Prize 2014 has been awarded to the Ikerbasque Research Professor at nanoGUNE and the UPV/EHU Rainer Hillenbrand for “the design and development of infrared near-field spectroscopy and the application of this novel spectroscopic method in different areas of natural sciences”.

Science: Flatland optics with graphene

23/05/2014

Researchers from nanoGUNE, in collaboration with ICFO and Graphenea, introduce a platform technology based on optical antennas for trapping and controlling light with the one-atom-thick material graphene. The experiments show that the dramatically squeezed graphene-guided light can be focused and bent, following the fundamental principles of conventional optics. The work, published yesterday in Science, opens new opportunities for smaller and faster photonic devices and circuits.

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