Ytterbium - 4 News
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Plasmon-powered upconversion nanocrystals for enhanced bioimaging and polarized emission
23-May-2017 - 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 ...
Tunnel view of how electrons play
Scanning tunnelling microscopes provide insights into mysterious electronic effects in some metals
24-Jun-2011 - Electrons behave like football teams: the match becomes interesting when the teamwork is as good as that conjured up by the players of FC Barcelona. Electrons which interact strongly with each other give rise to superconductivity, the lossless transport of current, for example. A team headed by ...
Instantaneous trace gas fingerprint with laser frequency combs
Scientists at the MPQ record ultrasensitive absorption broadband spectra within tens of microseconds by combining cavity enhancement and frequency comb spectroscopy
01-Dec-2009 - Trace gas spectroscopic detection has drawn much interest in recent years, as it both allows a better understanding of the molecular spectra of weak overtone transitions and in situ non-intrusive sensing of compounds at low concentration. However, recording a broadband spectrum within a very ...
Exploring the standard model of physics without the high-energy collider
12-Aug-2009 - Scientists at the University of California, Berkeley, and Lawrence Berkeley National Laboratory in the US, have performed sophisticated laser measurements to detect the subtle effects of one of nature's most elusive forces - the "weak interaction". Their work, which reveals the largest effect of ...
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