Phonons and Auxetics

About me.
One of my researches is on dispersions of phonons.
Quite interesting are the new auxetic materials, providind phononic band-gaps

2011 SPARAVIGNA A.C., Vibrations of a One-Dimensional Host-Guest System, MATERIALS SCIENCES AND APPLICATIONS, Scientific Research, pp. 5, 2011, Vol. 2, pagine da 314 a 318, ISSN: 2153-117X, DOI:10.4236/msa.2011.25041

2007 SPARAVIGNA A., Phonons in conventional and auxetic honeycomb lattices, PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, APS, pp. 6, 2007, Vol. 76, ISSN: 1098-0121, DOI: 10.1103/PhysRevB.76.134302

2007 SPARAVIGNA A., Phonons dispersions in auxetic lattices, JOURNAL OF PHYSICS. CONFERENCE SERIES, 2007, Vol. 92, pagine da 012100-1 a 012100-4, ISSN: 1742-6596, DOI: 10.1088/1742-6596/92/1/012100

2007 SPARAVIGNA A.C., Phonons in lattices with rod-like particlesarXiv:0706.4076, 2007

2007 SPARAVIGNA A.C., Phonons in honeycomb and auxetic two-dimensional lattices arXiv:cond-mat/0703257, 2007

The Hindu : Sci-Tech / Internet : New crater in Sudan discovered using Google Maps

"Software scientists have discovered a 10 kilometre wide crater like structure in the Bayuda Desert of Sudan using Google Maps...

Amelia Sparavigna from the Politecnico di Torino in Italy said she got the idea from Italian researcher Vincenzo de Micheles who identified an impact crater in the remote desert of southern Egypt by 2008 using Google Earth. Located between the fourth and sixth cataract, the area is characterised by basaltic rocks from ancient volcanoes. Sparavigna noticed “a non-perfect round shape about 40 kilometres in diameter” on the eastern bank of river Nile. She then processed the original Google Maps satellite image with an astronomical image-processing program. “Aerial photography is expensive and satellite imagery doesn’t always have good enough resolution. But in this case they have been able to generate some interesting images which have been further enhanced,” ABC Science quoted Professor David Cohen, a geologist, as saying."

The Hindu : Sci-Tech / Internet : New crater in Sudan discovered using Google Maps

Fernando Sanford and the "Kirlian effect"

My paper on Fernando Sanford and the Kirlian effect has been selected by
Look 'n' Watch
The best of the rest from the Physics arXiv this week

http://technologyreview.es/blog/arxiv/26758/

Plasma for textiles

My paper on the Plasma treatment advantages for textiles has been selected by

Ball’s ‘n’ fire
The best of the rest from the arXiv this week

http://arxivblog.com/?p=281

Leonardo Da Vinci sketch

My paper on the Digital Restoration of Da Vinci's Sketches has been selected by
Chops 'n' changes
The best of the rest from the Physics arXiv this week

http://www.technologyreview.com/blog/arxiv/23135/

More at

http://arxiv.org/abs/0903.1448

Digital restoration of ancient papyri

My paper on the Digital Restoration of Ancient Papyri has been selected by
Drives 'n' droves
The best of the rest from the physics arXiv this week
http://www.technologyreview.com/blog/arxiv/23293/

Scientist googles crater find

Scientist googles crater find, Monday, 16 August 2010, by Stuart Gary
ABC
http://www.abc.net.au/science/articles/2010/08/16/2982419.htm
"Scientists using Google Maps have discovered a new crater like structure in the Bayuda Desert of Sudan. If confirmed, it will be the second such discovery using the popular online mapping tool and could spawn a new generation of home-based amateur crater hunters. Assistant Professor Amelia Sparavigna from the Politecnico di Torino in Italy has detailed her discovery on the pre-press website arXiv.org."


Slideshow: Photo 1 of 2


Google Crater after (Google Earth)

Possible geoglyphs spotted in Peru

Possible geoglyphs spotted in Peru, by Rossella Lorenzi.

A huge network of earthworks, or geoglyphs, is visible in satellite imagery of a large area around Titicaca Lake, a researcher claims. http://news.discovery.com/archaeology/geoglyph-peru-andean.html

  Was this a planned symbol? Yes, says scientist Amelia Carolina Sparavigna.

"An Italian researcher may have discovered a huge network of earthworks representing birds, snakes and other animals in Peru, according to a study published on the Cornell University physics website arXiv.
Amelia Carolina Sparavigna, assistant professor at the department of physics of Turin's Polytechnic University, used Google satellite maps and AstroFracTool, an astronomical image-processing program which she developed, to investigate over 463 square miles of land around Peru's Titicaca Lake "

New Desert Crater Found Using Google Maps and Free Software

"The discovery of a new crater in the Bayuda Desert in Sudan suggests that the next generation of crater hunters could be amateurs based at home.
Most of the rocky planets, moons and asteroids in the Solar System are pock-marked with impact craters of all sizes. On Earth, however, small craters are rare because they quickly get eroded by weather and water.
So the discovery of new small craters is a reason to celebrate. A couple of weeks ago, an Italian team announced in the journal Science that it had used Google Earth to identify an impact crater in the remote desert of southern Egypt. A quick trip to the region showed this crater to be 45 meters in diameter and reasonably well-preserved in the desert rocks.
Now, just a few days later, Amelia Sparavigna at the Politecnico di Torino in Italy has found evidence of another crater in the Bayuda Desert in Sudan using Google Maps. This one is a little bigger: about 10 kilometres in diameter."

http://www.technologyreview.com/blog/arxiv/25583/

The Hindu : Sci-Tech / Internet : New crater in Sudan discovered using Google Maps

"Software scientists have discovered a 10 kilometre wide crater like structure in the Bayuda Desert of Sudan using Google Maps.
If confirmed, it will be the second such discovery using the popular online mapping tool and could spawn a new generation of home-based amateur crater hunters.
Amelia Sparavigna from the Politecnico di Torino in Italy said she got the idea from Italian researcher Vincenzo de Micheles who identified an impact crater in the remote desert of southern Egypt by 2008 using Google Earth.
Located between the fourth and sixth cataract, the area is characterised by basaltic rocks from ancient volcanoes."The Hindu : Sci-Tech / Internet : New crater in Sudan discovered using Google Maps

The Amazing Steam Engines Of The First Century: An online translation of an ancient text reveals some engineering marvels from antiquity.
by KFC 01/20/2011, http://www.technologyreview.com/blog/arxiv/26285/

"Ask a person in the street who invented the steam engine and you're more than likely to hear the names of various Renaissance inventors such as Denis Papin or James Watt. Less well known is the fact that steam engines were in use at least 2000 years ago. Our knowledge of these devices is largely the result of a text called Pneumatica written in the first century by the Greek mathematician, engineer and inventor Hero of Alexandria. Today, Amelia Carolina Sparavigna, at the Politecnico di Torino in Italy, talks us through some of these devices as they are described in an online translation of Hero's work."