A quantum afterburner extracts laser light from vehicle exhaust.
The last leap forward: Ottos first four stroke engine of 1876.
Courtesy of Deutz Canada Inc.
The hot gases belching out of your cars exhaust are not just useless waste. They are a laser waiting to happen, says physicist Marlan Scully1.
All you need to harness this potential, suggests Scully, of Texas A&M University in College Station, is a quantum afterburner. This hypothetical modification would use quantum mechanics to boost the engines efficiency by clawing back waste heat and turning it into useful energy - laser light.
Engine efficiency is an old problem. The scientists who investigated it during the Industrial Revolution created the discipline called thermodynamics, which describes how heat flows from place to place.
In the early nineteenth century, the French engineer Nicholas Léonard Sadi Carnot calculated the maximum work available from an engine in which heating a gas through a cycle of expansion and contraction drives the motion of a piston.
Scully has taken a fresh look at the efficiency of such a cyclical process, not in a Carnot engine, but in an Otto engine. Devised in 1876 by Nikolaus Otto, this system forms the basis of todays four-stroke internal-combustion engine.
In the Otto engine, a moving piston sucks fuel into a cylinder and then compresses it. The fuel is ignited and expands, pushing the piston outwards. The piston then expels the spent exhaust gases.
PHILIP BALL | © Nature News Service
Philippines’ microsatellite captures best-in-class high-resolution images
22.09.2016 | Hokkaido University
OLED microdisplays in data glasses for improved human-machine interaction
22.09.2016 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.
“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...
With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.
Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...
For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.
Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...
At AKL’16, the International Laser Technology Congress held in May this year, interest in the topic of process control was greater than expected. Appropriately, the event was also used to launch the Industry Working Group for Process Control in Laser Material Processing. The group provides a forum for representatives from industry and research to initiate pre-competitive projects and discuss issues such as standards, potential cost savings and feasibility.
In the age of industry 4.0, laser technology is firmly established within manufacturing. A wide variety of laser techniques – from USP ablation and additive...
Every three years, the plastics industry gathers at K, the international trade fair for plastics and rubber in Düsseldorf. The Fraunhofer Institute for Laser Technology ILT will also be attending again and presenting many innovative technologies, such as for joining plastics and metals using ultrashort pulse lasers. From October 19 to 26, you can find the Fraunhofer ILT at the joint Fraunhofer booth SC01 in Hall 7.
K is the world’s largest trade fair for the plastics and rubber industry. As in previous years, the organizers are expecting 3,000 exhibitors and more than...
23.09.2016 | Event News
20.09.2016 | Event News
16.09.2016 | Event News
23.09.2016 | Life Sciences
23.09.2016 | Health and Medicine
23.09.2016 | Life Sciences