June 30, 2005
Global warming looks set to be much worse than previously forecast, according to new research.
Three top climate researchers claim that the greenhouse gases already in the atmosphere should have warmed the world more than they have. The reason they have not, they say, is that the warming is being masked by sun-blocking smoke, dust and other polluting particles put into the air by human activity.
But they… read more
February 19, 2009
Magnetic and non-magnetic materials have been coaxed to self-assemble in a “ferrofluid” into intricate permanent nanostructures by researchers at Duke University and the University of Massachusetts, raising the possibility of using these structures as basic building blocks for applications such as advanced optics, cloaking devices, data storage, and bioengineering.
May 25, 2003
A virtual golf course has been created with the strengths of male and female golfers. It rewards precision, while penalizing shots that are too long or too short, leveling the playing field between men and women.
In a simulated four rounds of golf, golfer Annika Sorenstam was the winner.
August 28, 2014
A research team has developed a device that could be used to detect the extremely rare tumor cells that circulate in cancer patients’ blood, helping doctors predict whether a tumor is going to spread.
Developed by researchers from MIT, Pennsylvania State University, and Carnegie Mellon University, the dime-sized device separates out tumor cells from white blood cells by exposing the cells to sound… read more
November 21, 2011
A technique to selectively sort semiconducting single-walled carbon nanotubes and conducting nanotubes has been discovered by researchers at Stanford University, University of California-Davis, and the Samsung Advanced Institute of Technology.
When nanotubes are manufactured, semiconducting nanotubes, which work for transistors and solar cells, are mixed with conducting nanotubes, which work for batteries. Mixtures of conducting and semiconducting nanotubes do not carry enough current for wires or battery… read more
June 27, 2003
German researchers report a simple
electrical technique to divide
semiconducting and metallic nanotubes by using an electric field
to draw the more conductive metallic tubes to an electrode.
According to chemist Richard
Smalley of Rice University, the technique is long overdue and will find immediate use.
The technique is described in a paper published online by Science this week (www.sciencemag.org/cgi/content/
November 27, 2006
Intelligence augmentation (IA) is a catch-all term for a wide variety of methods that use actual human beings, with actual human brains, as part of computer programs. The idea is that by having a human deal with the specific parts of a problem that are difficult or impossible for a computer, but trivial for you or me, you can have a program that seems to possess real human intelligence.… read more
April 7, 2010
A group of US scientists has developed an acoustic lens made of a metamaterial that can focus acoustic waves with greater energy than ever before possible to produce “sound bullets” that could find many uses, including effective, nonintrusive sonic scalpels for destroying tumors or kidney stones.
It could also be used to produce near photo-quality images of the inside of the body, but without the radiation risks of X-rays.
University of Bristol and University of Laguna researchers have developed a system using video from portable cameras that calculates the distance of obstacles, predicts the movements of people and cars, and generates three-dimensional acoustic maps, compensating for head positioning using a gyroscopic sensor.
July 15, 2005
UPDATE: The bubble bursts
An inexpensive “tabletop” device that uses sound waves to produce nuclear fusion reactions could lead to a new source of clean energy and a host of portable detectors and other applications.
A key component of the experiment was a glass test chamber about the size of two coffee mugs filled with a liquid called deuterated acetone, which contains a form of hydrogen… read more
May 26, 2010
By using surface acoustic waves (SAWs) to manipulate biological samples on a “lab-on-a-chip,” rapid, on-the-spot chemical analysis and diagnosis of disease has moved closer to reality.
April 23, 2012
New materials that have the potential to create acoustically shielded environments may be on the way, Ars Technica reports.
In the latest development, researchers have shown how creating materials that have meandering paths for sound waves can result in a negative acoustic index of refraction.
More importantly, these materials may actually be manufacturable and work for sound waves in air — the stuff we might consider noise.… read more
October 28, 2003
Sound-detecting hair cells of the inner ear can be grown in the lab from embryonic stem cells, scientists have shown, creating a possible alternative to cochlear implants for treating deafness.