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New bomb detection tool: Ferns
Researchers engineered fern proteins to turn airport plants into bomb detectors; the researchers rewrite the fern’s natural signaling process so the plant turns from green to white when chemicals are detected in air or soil
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"Sniffer technology" may replace detection dogs
Humans have approximately 5,000,000 sensory “smelling” cells, while certain breeds of dogs, such as the Alsation, can have up to 220,000,000; dogs trained for detection jobs are effective enough, but require much more maintenance than a machine — and researchers have just developed a sniffer machine which may well compete with dogs; the new device uses what is called quantum cascade (QC) lasers to detect any trace vapors of explosive material emitted by a passenger, without the passengers having to remove any article of clothing in the process
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Camera better than the human eye
Researchers developed a curvilinear camera, much like the human eye, with the significant feature of a zoom capability, unlike the human eye; the “eyeball camera” has a 3.5x optical zoom, takes sharp images, is inexpensive to make and is only the size of a nickel; the camera will not be appearing at Best Buy any time soon, but the tunable camera — once optimized — should be useful in many applications, including night-vision surveillance, robotic vision, endoscopic imaging, and consumer electronics
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New glass tops steel in strength, toughness
Researchers develop glass which is stronger than steel — indeed, the damage-tolerant metallic glass has demonstrated a strength and toughness beyond that of any known material; the new metallic glass is a microalloy featuring palladium, a metal with a high “bulk-to-shear” stiffness ratio that counteracts the intrinsic brittleness of glassy materials
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Food packaging indicates food freshness
An estimated 8.3 million tons of household food — most of which could have been eaten — is wasted in the United Kingdom each year because retailers and consumers question whether the food is safe to eat; researchers at Glasgow’s Strathclyde University are developing a plastic indicator that alerts consumers to food that is starting to go off; the new indicator will change color to provide a warning when food is about to lose its freshness
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New technology speeds cleanup of nuclear contaminated sites
Hundreds of millions of dollars are spent on cleanup of some major sites contaminated by radioactivity, primarily from the historic production of nuclear weapons during and after the Second World War; Oregon State University researchers have invented a new type of radiation detection and measurement device that will be particularly useful for cleanup of sites with radioactive contamination, making the process faster, more accurate and less expensive
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New camera technology may give soldiers eyes in the back of their heads
DARPA is looking for ideas on how to develop a small and light device which will give the user zoom vision, various forms of night sight, and act as a heads-up display besides; perhaps best of all, the proposed kit would also offer “full sphere awareness” — that is, eyes in the back of your head
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The best place for a wind turbine: 30,000 feet above ground
At altitude of 2,000 feet (610 meters), wind velocity is two to three times greater than at ground level; since power production goes up with the cube of that wind velocity, this means that at 2,000 feet above ground, wind produces 8 to 27 times the power produced by wind at ground level; if we send turbines farther aloft, into the 150 mph (240 kph) jet stream at 30,000 feet (9,150 meters), than power production grows from 500 watts per meter for ground-based wind turbines to about 20,000, 40,000 watts per square meter; this is very high energy density — and NASA is examining the project’s feasibility
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Laws of traditional physics would foil Santa's effort to carry out mission
Santa has 31 hours to visit 378 million Christian children; at the rate of 3.5 children per household, and assuming at least one good child per home, this comes to 108 million homes; if each child receives no more than a medium sized Lego set (two pounds), the sleigh would be carrying more than 500 thousand tons, not counting Santa himself; Santa would thus need at least 360,000 Reindeer to pull the sleigh; since Santa must visit 108 million homes in 31 hours, he will have to travel at 650 miles per second — 3,000 times the speed of sound; at that speed, the lead pair of Reindeer would absorb 14.3 quintillion joules of energy per second each and vaporize – indeed, the entire Reindeer team would be vaporized within 4.26 thousandths of a second; Santa himself would be subjected to forces of 17,500 Gs; a 250 pound Santa (which seems ludicrously slim) would be pinned to the back of the sleigh by 4,315,015 pounds of force, and be crushed
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Giving crowds a lift with spiral escalator
A monorail-inspired design could help create the world’s first continuous spiral escalator; the spiral escalator could transport larger numbers of people than a lift in a vertical space too narrow for a traditional escalator; this could reduce the floor space needed in buildings for personal transporters and cut the cost of putting escalators into underground railway stations
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BAE develops vehicles for ground war of the future
A range of technologies could improve the effectiveness and fuel efficiency of current military vehicles, while laying the groundwork for future fighting vehicles; BAE looked at 567 technologies and 244 vehicle concepts, which had to fit only two criteria — the vehicle could weigh no more than 30 tons, and had to carry an equivalent punch to a Challenger 2 tank; the company settled on seven future vehicles
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Engineers enhance building designs better to withstand earthquakes
Earthquakes come in all sizes with varying degrees of damage depending on the geographic locations where they occur; even a small one on the Richter scale that strikes in an impoverished nation can be more damaging than a larger one that occurs in a city where all buildings have been designed to a stricter building code; the current building codes are insufficient because buildings designed according to these codes have evolved only to avoid collapse under very large earthquakes
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Hope for terahertz: laser operates at higher temperatures than thought possible
Terahertz rays — radiation between microwaves and infrared rays on the electromagnetic spectrum — are a promising means of detecting explosives, but they have proven hard to generate cost effectively. So far, solid-state lasers — the cheap, miniature type of laser found in CD players — have been unable to produce terahertz rays unless they are super-cooled, which makes them impractical for mass deployment; now a group of researchers report a solid-state terahertz laser that operates at nearly twice the temperature that putative proportionality would have predicted
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General Atomic says its Blitzer rail gun already "tactically relevant"
Last Friday the U.S. Navy tested a rail gun with muzzle energies of 64 megajoules; the gun aims to deliver a projectile to a target 200 miles away at speeds of up to Mach 7+; not to be outdone, General Atomics has just released information about how, back in September, it tested its own rail gun — dubbed the Blitzer; while the Navy researchers are still preoccupied with the velocity of the projectile and muzzle energy, GA says it is farther along in weaponizing its system, which it describes as already “tactically relevant”
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Underground security tech to revolutionize border security
The University of Arizona College of Engineering is testing an invisible border monitoring system that could revolutionize the way the U.S. conducts homeland security; the border-monitoring system, known as Helios, consists of laser pulses transmitted through fiber-optic cables buried in the ground that respond to movements on the surface above; a detector at one or both ends of the cable analyzes these responses; Helios is sensitive enough to detect a dog and can discriminate between people, horses, and trucks
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More headlines
The long view
Autonomous Vehicle Technology Vulnerable to Road Object Spoofing and Vanishing Attacks
Researchers have demonstrated the potentially hazardous vulnerabilities associated with the technology called LiDAR, or Light Detection and Ranging, many autonomous vehicles use to navigate streets, roads and highways. The researchers have shown how to use lasers to fool LiDAR into “seeing” objects that are not present and missing those that are – deficiencies that can cause unwarranted and unsafe braking or collisions.
Tantalizing Method to Study Cyberdeterrence
Tantalus is unlike most war games because it is experimental instead of experiential — the immersive game differs by overlapping scientific rigor and quantitative assessment methods with the experimental sciences, and experimental war gaming provides insightful data for real-world cyberattacks.
Prototype Self-Service Screening System Unveiled
TSA and DHS S&T unveiled a prototype checkpoint technology, the self-service screening system, at Harry Reid International Airport (LAS) in Las Vegas, NV. The aim is to provide a near self-sufficient passenger screening process while enabling passengers to directly receive on-person alarm information and allow for the passenger self-resolution of those alarms.
Falling Space Debris: How High Is the Risk I'll Get Hit?
An International Space Station battery fell back to Earth and, luckily, splashed down harmlessly in the Atlantic. Should we have worried? Space debris reenters our atmosphere every week.
Testing Cutting-Edge Counter-Drone Technology
Drones have many positive applications, bad actors can use them for nefarious purposes. Two recent field demonstrations brought government, academia, and industry together to evaluate innovative counter-unmanned aircraft systems.
Strengthening the Grid’s ‘Backbone’ with Hydropower
Argonne-led studies investigate how hydropower could help add more clean energy to the grid, how it generates value as grids add more renewable energy, and how liner technology can improve hydropower efficiency.
The Tech Apocalypse Panic is Driven by AI Boosters, Military Tacticians, and Movies
From popular films like a War Games or The Terminator to a U.S. State Department-commissioned report on the security risk of weaponized AI, there has been a tremendous amount of hand wringing and nervousness about how so-called artificial intelligence might end up destroying the world. There is one easy way to avoid a lot of this and prevent a self-inflicted doomsday: don’t give computers the capability to launch devastating weapons.
The Tech Apocalypse Panic is Driven by AI Boosters, Military Tacticians, and Movies
From popular films like a War Games or The Terminator to a U.S. State Department-commissioned report on the security risk of weaponized AI, there has been a tremendous amount of hand wringing and nervousness about how so-called artificial intelligence might end up destroying the world. There is one easy way to avoid a lot of this and prevent a self-inflicted doomsday: don’t give computers the capability to launch devastating weapons.