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Date: 21 November 2009
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Optimiz Research List  
Records 1-20 of 63  |  Go to 1 2 3 4 Next >> page 

Shifting entropy elsewhere : New methods for lowering the entropy of ultracold gases may allow observation of more subtle quantum materials.

Location: Berkeley, United States

Ultracold atoms are still too hot. This may seem a ridiculous claim—after all, the low-temperature exploits of the purveyors of quantum gases are notorious. Laser cooling can flash-freeze atoms to temperatures in the micro- and nanokelvin...

Base Transit Time of a Bipolar Transistor with Gaussian Base Doping Profile

Location: Dhaka, Bangladesh

Abstract :

 

In this work, an analytical expression for base transit time tb of...

A better way to pinpoint underground oil reserves : CEE mapping technology could make extraction more efficient

Location: Cambridge, United States

An accurate map of a large underground oil reservoir that can guide engineers' efforts to coax the oil from the vast rocky subsurface into wells where it can be pumped out for storage or transport.

Researchers in MIT's Department of...

More power from bumps in the road : energy-harvesting shock absorbers

Location: Cambridge, United States

A team of MIT undergraduate students has invented a shock absorber that harnesses energy from small bumps in the road, generating electricity while it smoothes the ride more effectively than conventional shocks. The students hope to...

Knowing when to fold : Engineers use 'nano-origami' to build tiny electronic devices

Location: Cambridge, United States

Folding paper into shapes such as a crane or a butterfly is challenging enough for most people. Now imagine trying to fold something that's about a hundred times thinner than a human hair and then putting it to use as an electronic device....

Manufacturing inefficiency : Study sees 'alarming' use of energy, materials in newer manufacturing processes

Location: Cambridge, United States

Modern manufacturing methods are spectacularly inefficient in their use of energy and materials, according to a detailed MIT analysis of the energy use of 20 major manufacturing processes.

Overall, new manufacturing systems are...

Development of Thin-film Electroluminescent Device Using Inorganic Oxides

Location: Tokyo, Japan

The thin-film EL devices use perovskite oxides, typified by barium titanate (BaTiO3), which has long been used as capacitor material for electronic circuits. With an emission starting voltage of ≈10 V AC, the power source...

Propelling Underwater Vehicles Using Vortex Ring Generation

Location: California, United States

Abstract : As robots designed to operate underwater become more common, it is useful to look at ways to make them more efficient. Autonomous Underwater Vehicles (AUVs) carry their power source with them, so improving the efficiency of the...

A genetic study reveals the diversity and origins of African populations

Location: Maryland, United States

By analyzing the genetic differences between more than 3 000 people across Africa and from other parts of the world, researchers have shown how the current African populations had evolved from 14 aboriginal groups. The result of their...

Design revolution

Location: Massachusetts, United States

A revolutionary approach to the design of consumer products - from automobiles to plasma TVs - could cut manufacturers' warranty costs significantly. Writing in a forthcoming issue of the International Journal of Six Sigma and Competitive...

New Graphene-Based Material Clarifies Graphite Oxide Chemistry

Location: Austin, United States

A new "graphene-based" material that helps solve the structure of graphite oxide and could lead to other potential discoveries of the one-atom thick substance called graphene, which has applications in nanoelectronics, energy storage and...

Continuous Descent Arrivals: Atlanta Flight Test Evaluates Technique for Saving Fuel and Reducing Noise in Airliners

Location: Atlanta, United States

Airline passengers arriving in Atlanta on early morning “redeye” flights during the past few months may have noticed something different during their descent to the runway. Instead of the typical sound of engine power rising and...

'Stress Tests' Probe Nanoscale Strains In Materials

Location: NIST, United States

Researchers at the National Institute of Standards and Technology (NIST) have demonstrated their ability to measure relatively low levels of stress or strain in regions of a semiconductor device as small as 10 nanometers across. Their recent...

A More Efficient Engine: A new type of engine could be relatively inexpensive.

Location: Cambridge, United States

Clean burning: A new sparkless gas engine could significantly reduce fuel consumption. In a conventional engine (top), a mixture of fuel and air is ignited by a spark plug. In a diesel (middle), the fuel ignites when it's injected into hot,...

Prosthetic Vein Valve Designed To Direct Blood Flow Shows Promising Pre-clinical Results

Location: Georgia, United States

Abstract: Engineers at the Georgia Institute of Technology have developed a prosthetic vein valve to help improve the lives of those suffering from a condition known as chronic venous insufficiency. The condition, which affects more...

U of N Reported Impact of Human Values to the Enlargement of Innovative Computer Technology

Location: University of Nottingham, United Kingdom

Emerging computer technologies will change our lives for the better by 2020. But we need to retain control to ensure that these developments do not impact negatively on basic human values, according to a new report...

Arizona Researcher Developed Biosensing Nanodevice that can Revolutionize Health Screenings

Location: Arizona State University, United States

One day soon a biosensing nanodevice developed by Arizona State University researcher Wayne Frasch may eliminate long lines at airport security checkpoints...

Stanford Electronics Researchers have Developed Multi-Aperture Image Sensor 3-D Camera

Location: Stanford University, United States

The camera you own has one main lens and produces a flat, two-dimensional photograph, whether you hold it in your hand or view it on your computer screen. On the other hand, a camera with two lenses (or two cameras placed...

Scientists Developed Lensless X-ray Technique to View Nanoscale Materials and Biological Specimens

Location: Argonne National Laboratory, U.S. Department of Energy, United States

X-rays have been used for decades to take pictures of broken bones, but scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory and their collaborators have...

Scientists have Developed New X-ray Technique to Peer Through High-Speed Dense Liquids Using High-Energy X-rays

Location: Argonne National Laboratory, U.S. Department of Energy, United States

Standard microscopy and visible light imaging techniques cannot peer into the dark and murky centers of dense-liquid jets, which has hindered scientists in their quest for a full understanding of liquid breakup in devices such as automobile...

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