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A new system for delivering a drug to organ transplant patients, which could avoid the risk of harmful side effects, is being developed by scientists at Strathclyde.
J. L. Italia, M. N. V. Ravi Kumar, and K. C. Carter: Evaluating the Potential of Polyester Nanoparticles for Per Oral Delivery of Amphotericin B in Treating Visceral Leishmaniasis, In: Journal of Biomedical Nanotechnology, Volume 8, Number 4, August 2012, Pages 695-702(8), DOI:10.1166/jbn.2012.1414: http://dx.doi.org/10.1166/jbn.2012.1414
Until now, no chip existed, on which both silicon and erbium-doped material were integrated. In her thesis, PhD candidate Laura Agazzi of the University of Twente demonstrates a working chip for the first time. It will be able to amplify light at speeds up to 170 Gbit/sec. The prototype chip has a signal gain of 7.2 decibel at infrared light (1533nm).
The prototype is a starting point, but the results are very promising. One of the possibilities is a laser with an extremely narrow linewidth of 1.7 kHz. “In any application that needs emission or amplification of light, this integration of both materials is useful. It is not limited to telecom. You could use these chips for sensor purposes, for tracing extremely small particles, for example,” Agazzi adds.
Laura Agazzi conducted her research within the Group Integrated Optical Microsystems (IOMS) of prof Markus Pollnau, which is part of the MESA+
Institute for Nanotechnology of the University of Twente. End of September she successfully defended her thesis Spectroscopic Excitation and Quen- ching Processes in Rare-Earth-Ion-Doped Al2O3 and their Impact on Amplifier and Laser Performance. Her thesis, or a summary, are available digitally.