Advance Your Materials: The Best Materials Analysis Just Got Better
Do you perform R&D or QA/QC analysis of advanced materials such as coatings or thin films? Be among the first to learn how Agilent's unique universal measurement spectrophotometer (UMS) will advance your materials analysis. Discover how you can measure what others cannot.
Solar cell woes p665 doi:10.1038/nphoton.2014.212 The pressure to publish results claiming organic solar cells with high efficiencies is leading to pervasive problems of false reporting within the community.
Erroneous efficiency reports harm organic solar cell research pp669 - 672 Eugen Zimmermann, Philipp Ehrenreich, Thomas Pfadler, James A. Dorman, Jonas Weickert et al. doi:10.1038/nphoton.2014.210 Mischaracterization of solar cell power conversion efficiencies and widespread publication of inconsistent data in scientific journals threatens to undermine progress in organic and hybrid photovoltaics research.
Biophotonics: Through-skull brain imaging pp677 - 678 Steen J. Madsen doi:10.1038/nphoton.2014.205 The use of carbon nanotubes makes it possible to perform fluorescent imaging of cerebral vasculature of mice through their intact skulls. The high spatial and temporal resolution of the non-invasive technique may prove useful for studies of stroke and other brain disorders.
Silicon photonics: One-way photons in silicon pp680 - 682 Alexander B. Khanikaev and Andrea Alù doi:10.1038/nphoton.2014.208 In the quest for on-chip optical isolation, scientists demonstrate non-reciprocal optical response based on a 'synthetic' magnetic field in an all-silicon platform. This may open directions to optical routing, on-chip lasers and integrated nanophotonic signal processing.
Quantum nonlinear optics — photon by photon pp685 - 694 Darrick E. Chang, Vladan Vuletić and Mikhail D. Lukin doi:10.1038/nphoton.2014.192 This review article summarizes the emerging field of quantum nonlinear optics. Three major approaches to generate optical nonlinearities based on cavity quantum electrodynamics, atomic ensembles with large Kerr nonlinearities and strong atomic interactions are reviewed. Applications of quantum nonlinear optics and many-body physics with strongly interacting photons are also discussed.
Sequentially timed all-optical mapping photography (STAMP) pp695 - 700 K. Nakagawa, A. Iwasaki, Y. Oishi, R. Horisaki, A. Tsukamoto et al. doi:10.1038/nphoton.2014.163 A single-shot burst camera has been developed that can generate motion pictures without performing repetitive measurements. It has a frame rate of 4.4 trillion frames per second and a high pixel resolution of 450 × 450 pixels, making it a powerful tool for observing difficult-to-reproduce or non-repetitive events in real time.
Non-reciprocal phase shift induced by an effective magnetic flux for light pp701 - 705 Lawrence D. Tzuang, Kejie Fang, Paulo Nussenzveig, Shanhui Fan and Michal Lipson doi:10.1038/nphoton.2014.177 An effective magnetic field is generated on a chip and a non-reciprocal phase shift is demonstrated in an 8.35-mm-long interferometer. The magnitude of the non-reciprocal phase produced is comparable to that achievable with monolithically integrated magneto-optical materials.
Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers pp706 - 709 N. Hartmann, W. Helml, A. Galler, M. R. Bionta, J. Grünert et al. doi:10.1038/nphoton.2014.164 Some X-ray free-electron laser facilities are pushing towards sub-10 fs pulses, making it desirable to reduce errors in X-ray/optical delay measurements to the 1 fs level. Researchers have now demonstrated X-ray measurements with a temporal resolution shorter than 1 fs, opening up new possibilities for time-resolved X-ray experiments.
Femtophotography p774 Interview with Keiichi Nakagawa doi:10.1038/nphoton.2014.209 A burst-mode camera developed in Japan called STAMP with a femtosecond frame rate could become a powerful tool for studying ultrafast dynamics. Nature Photonics asked Keiichi Nakagawa about the technique.
Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. For event advertising opportunities across the Nature Publishing Group portfolio please contact email@example.com
You have been sent this Table of Contents Alert because you have opted in to receive it. You can change or discontinue your e-mail alerts at any time, by modifying your preferences on your nature.com account at: www.nature.com/myaccount (You will need to log in to be recognised as a nature.com registrant)
Nature Publishing Group | 75 Varick Street, 9th Floor | New York | NY 10013-1917 | USA
Nature Publishing Group's worldwide offices: London - Paris - Munich - New Delhi - Tokyo - Melbourne San Diego - San Francisco - Washington - New York - Boston
Macmillan Publishers Limited is a company incorporated in England and Wales under company number 785998 and whose registered office is located at Brunel Road, Houndmills, Basingstoke, Hampshire RG21 6XS.