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something for Pacôme?

the lucky guy is skiiing

hello, i'm back! Yeah i knew about this work, my friends from paris observatory... It's a kind of preparatory study for future missions like Sagas

A new paper related to our old Ariadna on microstructured radiators.

This is actually a very nice paper in my view .... José, have a look at it!! "This study demonstrates that appropriately designed metallo-dielectric systems can serve as compact, highly directive and ultra radiative antennas. Let us emphasize that contrary to fully metallic antennas, the high directivity of this antenna does not result from a plasmonic effect, and that it is efficient over a wide range of frequencies. In consequence, the high directivity does compromise the high radiative decay rate enhancement offered by two coupled metallic particles and it is possible to exploit whispering gallery modes to further enhance the radiative decay rates. This work paves the way towards the design of compact, simple and highly efficient optical antennas."

Again some plasmonic metamaterial...

remember by comment on the butterfly wings during the brainstrormgame ?

See Also: Matter & Energy Nanotechnology Optics Physics Materials Science Graphene Organic Chemistry Reference White gold Electromagnetic radiation Nanomedicine Nanoparticle Any use for the smell project? "We have demonstrated resonant antenna-enhanced single-particle hydrogen sensing in the visible region and presented a fabrication approach to the positioning of a single palladium nanoparticle in the nanofocus of a gold nanoantenna,"

Here, we show that fluorescent proteins4, 5 in cells are a viable gain medium for optical amplification, and report the first successful realization of biological cell lasers based on green fluorescent protein (GFP).

Brilliant: If computers want to see things like we do, they will also have the same disadvantages.

We show numerically that vector antenna arrays can generate radio beams that exhibit spin and orbital angular momentum characteristics similar to those of helical Laguerre-Gauss laser beams in paraxial optics. For low frequencies (<~1 GHz), digital techni

To our knowledge this is the first demonstration of in vivo optical imaging of the fast physiological processes that accompany phototransduction in individual photoreceptors.

How light travels through a material is measured by the index of refraction, a fundamental optical constant long thought to be an intrinsic materials property. However, research has shown that features manipulated through nanofabrication techniques can le

Interestingly, Google uses optical character recognition (ocr) on pdfs that their bots find online, and then convert to html to make them searchable.

Optar stands for OPTical ARchiver. It's a codec for encoding data on paper. A proposal for fighting the digital obsolescence: Digital obsolescence is a situation where a digital resource is no longer readable because the physical media, the reader require

nice paper ... José and Luzi you will like it ...

A group of researchers from Austria have sent twisted beams of light across the rooftops of Vienna. It is the first time that twisted light has been transmitted over a large distance outdoors, and could enable researchers to take advantage of the significant data-carrying capacity of light in both classical and quantum communications. Although the data rate is not very high, it could offer a way to provide unhackable data links via space. Would provide an edge over terrestrial fibre optics?

Good news for fundamental physics and Earth system science, femtosecond lasers are now about to achieve space qualification thanks to fibre optics!  Applications include high resolution spectroscopy, absolute laser ranging, mapping of the geo-potential and testing of the theory of general relativity to name a few!

nice paper by the Koreans, did not know that they had already such a laser in orbit for a year. How much would this type be upscalable for our needs? in case we have not, we should reference it

New sensor to detect distances efficiently is based on the mixture chemistry, optics and physical principles.

No idea how it works, will need to digg into it.. Tom, shall we use Mixer?