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12-01 :: January 2012
nanotimes News in Brief
Twente’s MESA+ Institute for Nanotechnology adopted a “reverse” approach to spectroscopy which cleaned up images by eliminating back- ground noise.
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Research led by a team from the University of Bar- celona has identified a new material that exhibits an inverse barocaloric effect at room tempera- ture, which means that it cools when pressure is applied, unlike most other materials.
The study, carried out within the framework of Barcelona Knowledge Campus (BKC), also included work by researchers from the Polytechnic University of Catalonia. BarcelonaTech (UPC), the University of Duisburg-Essen (Germany) and the Indian Associ- ation for the Cultivation of Science.
The inverse barocaloric effect is created by a phase transition in the material below a given tempera- ture, which leads to changes in its structural and magnetic properties. It has recently been suggested that materials displaying this behaviour could also be used in novel energy harvesting systems.
Images of mayonnaise using a. CARS spectroscopy and b. the new VMI. Below, the intensity along the white line in the picture is given. Using VMI, the background signal vanishes. © MESA+
Erik Garbacik, Jeroen Korterik, Cees Otto, Shaul Muka- mel, Jennifer Herek and Herman Offerhaus: Background- free nonlinear microspectroscopy with vibrational mole- cular interferometry, In: Physical Review Letters, Volume 107, Issue 25, December 16, 2011, Article 253902 (4 pages), DOI:10.1103/PhysRevLett.107.253902: http://dx.doi.org/10.1103/PhysRevLett.107.253902
Lluís Mañosa, David González-Alonso, Antoni Planes, Maria Barrio, Josep-Lluís Tamarit, Ivan S. Titov, Mehmet Acet, Amitava Bhattacharyya, Subham Majumdar: In- verse barocaloric effect in the giant magnetocaloric La-Fe-Si-Co compound, In: Nature Communications, Vol. 2(2011), December 20, 2011, Article 595, DOI:10.1038/ ncomms1606: