Colas, the leading road construction and maintenance group, and its subsidiary, Somaro, a specialist in safety equipment and road signs and signals, in partnership with the Ecole Polytechnique, have developed a new type of noise barrier for roads with an unequalled level of sound absorption. Depending on the configuration, the barrier’s performance is 30% to 50% greater than that of the most effective sound panels currently available on the market.
This innovative product, for which a patent application has been filed and which has earned the Siemens Prize for Applied Research 2003 for the Ecole Polytechnique (the reputed French school of engineering), is based on a number of theoretical and experimental studies on the properties of irregularly shaped objects. It has been proved that the geometry of objects is of great importance in the deadening of noise. Resonators with a jagged or ragged geometrical shape can therefore deliver better sound deadening than ordinary geometrically smooth systems.
Considering these properties, and bearing in mind, moreover, that it is very difficult to manufacture irregularly shaped objects using inexpensive industrial processes (such as moulding, for instance), the challenge for the team consisted in developing the morphology of an acoustically absorbent material that would be appropriate for moulding.
Bremen University students reach the final at robotics competition with parcel delivery robot
19.10.2016 | BIBA - Bremer Institut für Produktion und Logistik
Discovering electric mobility in a playful way
18.08.2016 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
27.10.2016 | Materials Sciences
27.10.2016 | Physics and Astronomy
27.10.2016 | Life Sciences