Recently Added Most commented

Researcher says 3-D SoC could restore Japan’s luster

October 29, 2002

Japanese researcher Tadahiro Ohmi is developing three-dimensional systems-on-chip VLSI chips he claims have ten times better performance than today’s chips and squeeze design and production time to 1/40, clean room space to 1/5 and production cost to 1/10 of what’s now required.

“As one of the target systems-on-chip, Ohmi described a 3-D SoC that integrates everything but the kitchen sink: all of the silicon processors, silicon memories, polysilicon functional… read more

Nano Biomaterials

October 29, 2002

Rensselaer Polytechnic Institute is using nanotechnology to design a self-cleaning plastic in which the enzyme molecules are an integral part of the material. When the plastic comes into contact with bacteria or other pathogens, the enzymes attack the microbes and destroy their ability to bind to its surface.

Sim App: Get Ready for Biowarfare

October 29, 2002

Sandia National Laboratories has developed a computer simulation to prep public health and safety officials to respond quickly and effectively to a biochemical attack. The decision-analysis system synthesizes and displays incoming crisis data from hospitals, private physicians, law-enforcement agencies, pharmaceutical supply depots, the weather service and various other agencies.

Scientists to speak to public at Stanford’s ‘Wonderfest’

October 29, 2002

“Are There Natural Limits on the Power of Computers?” will be discussed by John McCarthy, Stanford pioneer in artificial intelligence, and Kenneth Taylor, Stanford philosopher on Nov. 3 at “Wonderfest,” a two-day series of dialogues for the public at Stanford University.

Light-Emitting Silicon Shines Much Brighter in New Invention

October 28, 2002

STMicroelectronics researchers have succeeded in increasing the efficiency of light-emitting silicon 100-fold, allowing for timing circuits to be built into silicon chips to reduce delays.

Sensors Gone Wild

October 27, 2002

The real goal of a $40 million experiment is to explore the uses of intelligent sensors, a technology whose promise suddenly seems huge. The applications for this “embedded intelligence” are vast and profound. Eventually large swaths of the earth will communicate with the digital realm using millions of miniature sensors. Sensors will be placed in bridges to detect and warn of structural weakness and in water reservoirs to spot hazardous… read more

Tech helps blind ‘see’ computer images

October 25, 2002

A simple touch display for the visually impaired soon could provide access to computer-generated images.

The prototype tactile display is a set of 3,600 small pins, about 10 per inch, which “prints” an image by using an extendable pointer to raise selected pins into a line drawing of the image.

The device is being developed by the National Institute of Standards and Technology. The tactile display also would… read more

Similar patterns in genes, brains, feeding

October 25, 2002

Scientists have used a mathematical algorithm to detect recurring patterns in the networks making up everything from food webs to the Internet to gene regulation in cells.

By uncovering these crucial building blocks of networks, researchers have taken an important step toward unraveling the bewildering complexity of these systems, which they term “motifs.”

Molecules power nanoscale computers

October 25, 2002

IBM Almaden Research Center researchers have developed a new kind of computing process that relies on the motion of molecules rather than the flow of electrons. The logic gates use cascades of carbon monoxide molecules to transfer data.

Devices made in this way have dimensions on the scale of nanometers, several orders of magnitude smaller than existing silicon-based components.

The researchers demonstrated a three-input sorter that uses several… read more

‘Talking books’ get digital upgrade

October 24, 2002

A talking book for the blind with no moving parts has been designed. It will read a volume digitally from a card smaller than a credit card and looks and feels like a book.

Buttons along the edges will enable the blind reader to turn pages forward and backward, skip quickly, insert bookmarks, and search for a remembered passage. The Library of Congress will convert about 30,000 titles, mostly… read more

‘Doorways’ discovered in living brain cells

October 24, 2002

Brain cell membranes contain fixed “doorways” that control the entry of molecules into the cell, new research at Duke University shows.

Understanding this process, and how to control it, could one day lead to an entirely new class of treatments for depression, epilepsy, addiction and other neurological disorders; and preventing pathogens, such as viruses, from entering brain cells.

Thread spun from pure carbon nanotubes

October 24, 2002

A way of making a thread purely from carbon nanotubes has been developed by researchers in China. They say the super-strong, electrically-conducting threads “should eventually be able to be woven into objects such as bullet-proof clothing and materials that block electromagnetic waves.”

The Intimate Machine

October 24, 2002

In the first show of the new Scientific American Frontiers series on PBS TV, “The Intimate Machine,” Alan Alda visits the MIT Media Lab, where researchers are working to make machines smarter, more empathetic and easier to work with.

The series, which premiered Oct. 22, airs on Sundays at 9 PM ET/PT. It can also be viewed online.

Powerful Attack Upset Global Internet Traffic

October 23, 2002

The “largest and most sophisticated assault on the servers in the history of the Internet” on Monday briefly crippled 9 of the 13 computer servers that manage global Internet traffic.

Radioactive battery provides decades of power

October 23, 2002

Tiny batteries that draw energy from nickel-63 radioactive isotopes could provide 50 years of power for micro-devices and electronics, says Amil Lal, who developed the system with colleagues at Cornell University.

“It might be possible to make really tiny microelectronic sensor systems that can be embedded in a building or even in the body,” he says.

close and return to Home