science + technology news

High-intensity ultrasound creates hollow nanospheres and nanocrystals

February 23, 2005

Using high-intensity ultrasound, researchers at the University of Illinois at Urbana-Champaign have created hollow nanospheres and the first hollow nanocrystals.

The nanospheres could be used in microelectronics, drug delivery and as catalysts for making environmentally friendly fuels.

University of Illinois at Urbana-Champaign news release

Software learns to translate by reading up

February 23, 2005

Translation software that develops an understanding of languages by scanning through thousands of previously translated documents has been developed by Information Sciences Institute.

It takes a statistical approach, building probabilistic rules about words, phrases and syntactic structures.

The translated documents used to teach the translation algorithms can be electronic, on paper, or even audio files. The developer says the system is not only faster than other methods, but… read more

New Methods of Solving Combinatorial-explosion Problems

February 22, 2005

Researchers have developed tools to solve many so-called intractable computer problems, at least in certain practical situations, by using methods that avoid searching the lengthy paths that occur in “heavy tails” of a path distribution.

One of the most effective approaches is to find a “backdoor set” — a small number of key variables whose values can be fixed in advance. In an airline scheduling problem with 10,000 variables,… read more

Tiny Is Beautiful: Translating ‘Nano’ Into Practical

February 22, 2005

Nanoparticles of various sorts are already found in products like sunscreen, paint and inkjet paper. More exotic varieties offer promise in medicine for sensitive diagnostic tests and novel treatments: the detection of Alzheimer’s disease by finding a protein in spinal fluid, for instance, or nanoparticles that heat up and kill cancer cells.

Single-molecule switch opens the door to biomolecular electronics

February 22, 2005

Scientists from the Biodesign Institute at Arizona State University have created the first reproducible single molecule negative differential resistor and in the process have developed a groundbreaking experimental technique that provides a “roadmap” for designing single-molecule devices based on biochemistry.

Arizona State University news release

Brain study points to ‘sixth sense’

February 22, 2005

Following the Asian tsunami, scientists struggled to explain reports that primitive aboriginal tribesmen had somehow sensed the impending danger in time to join wild animals in a life-saving flight to higher ground.

A new theory suggests that the anterior cingulate cortex, described by some scientists as part of the brain’s “oops” center, may actually function as an early warning system — one that works at a subconscious level to… read more

A genius explains

February 22, 2005

Daniel Tammet is an autistic savant who can perform mind-boggling mathematical calculations at breakneck speeds.

He can also describe how he does it. Now scientists are asking whether his exceptional abilities are the key to unlock the secrets of autism.

Holograms Poised to Reveal Bio Data

February 22, 2005

The next generation of biosensors may use low-cost, more-sensitive holograms instead of chips.

NTT RedTacton Human Area Network

February 21, 2005

NTT’s “RedTacton” Human Area Networking technology Research Project safely turns the surface of the human body into a data transmission path at speeds up to 10 Mbps.

It uses weak electric fields on the surface of the body as a transmission medium.

Lensless X-ray holography achieves ten times better resolution

February 18, 2005

Researchers have developed a “lensless X-ray holography” technique to take X-ray images with 10 times better spatial resolution than can be achieved with current X-ray lenses and at ultra-fast speeds.

The technique works by shining a coherent beam of X-ray light through two adjacent holes: one containing the sample to be studied, the other a tiny “reference” hole. The scattered light from both holes overlays to form a single,… read more

World’s Fastest Oscillating Nanomachine Holds Promise For Telecommunications, Quantum Computing

February 18, 2005

Boston University physicists have developed a nanomechanical oscillator that oscillates at 1.49 gigahertz, making it the fastest moving nanostructure yet created.

The technology could help further miniaturize wireless communication devices. It is also the largest structure (10.7 microns long and 400 nm wide) to monitor quantum mechanical movements.

Boston University news release

Using nano-materials for drug discovery

February 17, 2005

Purdue University researchers have demonstrated a prototype for a new class of miniature devices to study synthetic cell membranes in an effort to speed the discovery of new drugs for a variety of diseases.

The researchers created a chip about one centimeter square that holds thousands of tiny vessels sitting on top of a material that contains numerous pores. This “nanoporous” material makes it possible to carry out reactions… read more

Immortality Through Google

February 17, 2005

Digital artist David Sullivan’s Ego Machine uses Google to project Sullivan’s soul into the future.

His remains will be integrated into a computer processor. A virtual agent running on the computer that contains his ashes will scour the web for mentions of his name. As the mentions increase, an on-screen image of Sullivan will morph into an image of his younger self. But if the mentions decline, Sullivan’s image… read more

Rambling robots show human efficiency

February 17, 2005

The three mechanical bipeds androids that amble along with exceptional power efficiency and “instinctive” co-ordination were unveiled for the first time on Thursday.

Two of the three robots, those developed at Cornell and Delft, are relatively simple, yet exhibit remarkable power efficiency. Whereas Asimo consumes about 10 times as much power as a walking human, these robots use about the same amount of energy as the average person.

Invention Mania: Body Scans, 3D Modeling

February 17, 2005

Detailed holographic images of human bodies, three-dimensional models from digital photos taken by a handheld stereo camera, and a new kind of joystick that provides tactile feedback from 3D computer imaging software are among the innovations at the DEMO technology conference.

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