science + technology news

Molecular Rotor May Lead To Tiny Sensors, Pumps, Switches

October 7, 2005

A molecular rotor constructed with a few hundred atoms will turn in a desired direction at a selected frequency using an oscillating electrical field concentrated in a tiny area above the molecule.

Such molecular rotors may someday function as nanotechnology machines and be used as chemical sensors, cell-phone switches, miniature pumps or even laser-blocking goggles.

Source: University of Colorado at Boulder news release

Cranking Up the Allen Telescope Array

October 7, 2005

The first 42 of the planned 350 Allen Telescope Array’s antennas will be working by Spring, scanning roughly a half-billion stars in the dense Milky Way region near the galactic center for E.T., from 1390 to 1720 MHz in 450 million, ultra-narrow 1 Hz channels.

Are You Ready for Web 2.0?

October 7, 2005

The idea of a new, more collaborative internet is creating buzz reminiscent of the go-go days of the late 1990s.

Web 2.0, according to conference sponsor Tim O’Reilly, is an “architecture of participation” — a constellation made up of links between web applications that rival desktop applications, the blog publishing revolution and self-service advertising. This architecture is based on social software where users generate content, rather than simply consume… read more

Experts Give Scientists Roadmap on Nanotechnology Research

October 7, 2005

Toxicologists studying human health effects of nanomaterials now have a broad roadmap from a government-sponsored panel of experts on how to proceed.

Micro-organisms may be turned into nano-circuitry

October 7, 2005

Single-celled algae, called diatoms, found floating in oceans might someday be reborn as components in 3D circuits much more complex and powerful than existing electronics.

Georgia Institute of Technology researchers think it might be possible to fabricate diatom structures to order, by exploiting a growing understanding of their genetic properties. They could then be converted chemically into useful nano-components.

The Time Is Now: Bust Up the Box!

October 5, 2005

For decades, increases in the speeds of computer networks trailed the exponentially accelerating speed of microprocessor chips. Now the balance between the power of computer processing and networking has fundamentally reversed, and the rapid rise of transmission speeds is beginning to have a revolutionary impact on how computers are used and what they can do, as computing becomes distributed on a global basis.

The new epoch of computing has… read more

Working Together, Wherever They Are

October 5, 2005

In the new wave of Internet innovation, companies are embracing the potential of networked computing to let workers share their knowledge more efficiently as they nurture new ideas, new products and new ways to digitally automate all sorts of tasks.

Companies are drawing on collaborative models that first blossomed in nonbusiness settings, from online games to open-source software projects to the so-called wiki encyclopedias and blogs to speed up… read more

This Laser Trick’s a Quantum Leap

October 5, 2005

Physicists in Australia have slowed a speeding laser pulse and captured it in a crystal, a feat that could be instrumental in creating quantum computers.

The scientists slowed the laser light pulse from 300,000 kilometers per second to just several hundred meters per second, allowing them to capture the pulse for about a second.

Nanotubes refine computer memory

October 5, 2005

Nantero has succeeded in making circular wafers, 13 centimeters in diameter, that hold 10 gigabits of data and are ten times faster than flash memory.

Nantero calls its technology NRAM, nanotube-based, non-volatile random access memory.

The design involves suspending nanotube ribbons between points above a silicon chip, so that they form tiny bridges over electrodes lying below. When a charge is applied, the nanotube bridge curves… read more

PNA Molecules Could Be Used To Build Nanodevices

October 4, 2005

Carnegie Mellon University researchers have shown that the binding of metal ions can mediate the formation of peptide nucleic acid (PNA) duplexes from single strands of PNA that are only partly complementary. This result opens new opportunities to create functional, three-dimensional nanosize structures such as molecular-scale electronic circuits, which could reduce by thousands of times the size of today’s common electronic devices.

“DNA nanotechnology has led to the construction… read more

In Challenge to Google, Yahoo Will Scan Books

October 4, 2005

Open Content Alliance, an unusual alliance of corporations, nonprofit groups and universities has announced an ambitious plan to digitize hundreds of thousands of books over the next several years and put them on the Internet, with the full text accessible to anyone.

Members include Yahoo, the Internet Archive, the University of California, and the University of Toronto, as well as the National Archive in England and others.

In… read more

Help for Info Age Have-Nots

October 3, 2005

To bridge the Digital Divide, MIT and companies like AMD, Motorola, and Yahoo are pushing devices and services aimed at bringing cutting-edge tech to parts of the world that need it most.

R Is for Robot

October 2, 2005

UC San Diego human-robot researchers hope to develop classroom teaching machines with a “human touch” and robotic companions that can develop personal relationships.

The Mind of an Inventor

October 2, 2005

Applied Minds, led by inventor Danny Hillis, is developing such imaginative inventions as “touch tables”: the surface of each is a high-resolution computer display showing a satellite-camera view of the world. By putting your hands on the table and spreading them, you zoom into a region, a city, a neighborhood. You can also slide your hand over the table to expose the view as captured at an earlier time.

Pill-sized camera gets to grips with your gut

October 2, 2005

Researchers have developed a radio-controlled crawling camera capsule that can move and stop on command to give doctors greater control over the images it takes, unlike existing camera capsules.

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