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Tuesday, November 18, 2014

ScienceDaily: Engineering and Construction News

ScienceDaily: Engineering and Construction News


Engineers efficiently 'mix' light at the nanoscale

Posted: 17 Nov 2014 12:47 PM PST

Researchers have engineered a nanowire system that could pave the way for photonic computing, combining two light waves to produce a third with a different frequency and using an optical cavity to amplify the intensity of the output to a usable level.

Revolutionary solar-friendly form of silicon shines

Posted: 17 Nov 2014 10:06 AM PST

Silicon is the second most-abundant element in the earth's crust. When purified, it takes on a diamond structure, which is essential to modern electronic devices -- carbon is to biology as silicon is to technology. Scientists have synthesized an entirely new form of silicon, one that promises even greater future applications.

Spiral laser beam creates quantum whirlpool

Posted: 17 Nov 2014 06:33 AM PST

Physicists have engineered a spiral laser beam and used it to create a whirlpool of hybrid light-matter particles called polaritons, hybrid particles that have properties of both matter and light and could link electronics with photonics.

Engineers develop innovative process to print flexible electronic circuits

Posted: 17 Nov 2014 05:46 AM PST

Engineers have successfully printed complex electronic circuits using a common t-shirt printer. The electronic circuits are printed using unique materials in layers on top of everyday flexible materials such as plastic, aluminum foil and even paper. Resistors, transistors and capacitors, the key components of a complex electronic circuit, are printed using non-toxic organic materials like silver nanoparticles, carbon and plastics.

Three-dimensional microtechnology with Origami folding art

Posted: 14 Nov 2014 05:58 AM PST

Microtechnology has radically changed our lives, both in electronics and mechanics. Everyone encounters this every day and uses successful examples, such as the accelerometer in smartphones or the sensor in car airbags. However, enormous strides can still be made in microtechnology. The current applications are two-dimensional. Everything is placed on a thin layer of glass or silicon, which is used in pure form for the production of semiconductor chips, for example, in smartphones.

Developing self-healing concrete to improve the durability of structures

Posted: 13 Nov 2014 08:00 AM PST

Manual repairs to structures lead to endless traffic jams everywhere, but imagine that all this misery on the road could be eliminated by means of concrete that repairs itself. That is exactly what a new project aims to achieve, the development of self-healing concrete to improve the durability of structures.

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