Unseen areas are troublesome for police and first responders: Rooms can harbor dangerous gunmen, while collapsed buildings can conceal survivors. Now Bounce Imaging, founded by an Massachusetts Institute of Technology alumnus, is giving officers and rescuers a safe glimpse into the unknown.
The tiny hairs of Saharan silver ants possess crucial adaptive features that allow the ants to...
Fog can play a key role in cloaking military invasions and retreats and the actions of intruders...
Electron microscopy is a multi-scale, multi-modal and multi-dimensional technique for imaging materials down to the atomic level. Developed in 1931 by German physicist Ernst Ruska and electrical engineer Max Knoll, the electron microscope (EM) has evolved from Ruska’s initial 400X capabilities to its current 10,000,000X performance.
Data glasses tend to be chunky, unstylish objects, so it's no wonder they haven't caught on among general consumers. Fraunhofer researchers have now developed a technology that allows the "specs" to be made in small, unobtrusive designs. The new glasses also correct for farsightedness.
With two off-the-shelf digital cameras situated about 1 km apart facing Miami’s Biscayne Bay, Lawrence Berkeley National Laboratory scientists are collecting 3-D data on cloud behavior that have never been possible to collect before. The photos allow the team to measure how fast the clouds rise, which in turn can shed light on a wide range of areas, ranging from lightning rates to extreme precipitation to the ozone hole.
NanoMRI is a scanning technique that produces nondestructive, high-resolution 3-D images of nanoscale objects, and it promises to become a powerful tool for researchers and companies exploring the shape and function of biological materials such as viruses and cells in much the same way as clinical MRI today enables investigation of whole tissues in the human body.
It looks like a Slinky suspended in motion. Yet this photonics advancement, called a metamaterial hyperlens, doesn’t climb down stairs. Instead, it improves our ability to see tiny objects. The hyperlens may someday help detect some of the most lethal forms of cancer.
Last summer, MIT researchers published a paper describing an algorithm that can recover intelligible speech from the analysis of the minute vibrations of objects in video captured through soundproof glass. In June, researchers from the same groups will describe how the technique can be adapted to infer material properties of physical objects, such as stiffness and weight, from video.
The compound eyes found in insects and some sea creatures are marvels of evolution. There, thousands of lenses work together to provide sophisticated information without the need for a sophisticated brain. Human artifice can only begin to approximate these naturally self-assembled structures, and, even then, they require painstaking manufacturing techniques.
It’s hard to take a photo through a window without picking up reflections of the objects behind you. To solve that problem, professional photographers sometimes wrap their camera lenses in dark cloths affixed to windows by tape or suction cups. But that’s not a terribly attractive option for a traveler using a point-and-shoot camera to capture the view from a hotel room or a seat in a train.
Lenses appear in all sorts of everyday objects, from prescription eyeglasses to cell phone cameras. Typically, lenses rely on a curved shape to bend and focus light. But in the tight spaces inside consumer electronics and fiber-optic systems, these rounded lenses can take up a lot of room. Over the last few years, scientists have started crafting tiny flat lenses that are ideal for such close quarters.
Before going up to Mauna Kea's summit on Hawaii's Big Island, Heather Kaluna makes an offering to Poliahu, the snow goddess of the mountain. She holds it sacred, as do other Native Hawaiians. The mountain holds another important place in her life: Poised to be the first Native Hawaiian to get an astronomy doctorate from the Univ. of Hawaii, she uses the mountain to gaze at the stars.
Computer scientists at the Univ. of California, San Diego, have combined sophisticated computer vision algorithms and a brain-computer interface to find mines in sonar images of the ocean floor. The study shows that the new method speeds detection up considerably, when compared to existing methods, which mainly consist of visual inspection by a mine detection expert.
Spencer Kent stands nervously in front of Team D.R.A.D.I.S.’ booth at Rice Univ.’s annual Engineering Design Showcase. Judging begins in about 10 min, and his teammate Galen Schmidt is frantically typing computer code into a laptop beside the team’s custom-made radar system.
In modern microscope imaging techniques, lasers are used as light sources because they can deliver fast pulsed and extremely high-intensity radiation to a target, allowing for rapid image acquisition. However, traditional lasers come with a significant disadvantage in that they produce images with blurred speckle patterns: a visual artifact that arises because of a property of traditional lasers called "high spatial coherence."
The probe of an atomic force microscope (AFM) scans a surface to reveal details at a resolution 1,000 times greater than that of an optical microscope. That makes AFM the premier tool for analyzing physical features, but it cannot tell scientists anything about chemistry. For that they turn to the mass spectrometer.
When a crystal lattice is excited by a laser pulse, waves of jostling atoms can travel through the material at close to one sixth the speed of light, or approximately 28,000 mps. Scientists now have a new tool to take movies of such superfast movement in a single shot. Researchers from Japan have developed a new high-speed camera that can record events at a rate of more than one-trillion-frames-per-second.
A team of astronomers using ground-based telescopes in Hawaii, California, and Arizona recently discovered a planetary system orbiting a nearby star that is only 54 light-years away. All three planets orbit their star at a distance closer than Mercury orbits the sun, completing their orbits in just 5, 15, and 24 days.
In a move that could improve the energy storage of everything from portable electronics to electric microgrids, Univ. of Wisconsin-Madison and Brookhaven National Laboratory researchers have developed a novel x-ray imaging technique to visualize and study the electrochemical reactions in lithium-ion rechargeable batteries containing a new type of material, iron fluoride.
Image analysis is of growing importance in science, and trends are observed for different layers of image acquisition. Quantifiable and reproducible data is a prerequisite for scientific publications. And, today, it isn’t sufficient to just acquire aesthetically pleasing images with a microscope. To get powerful scientific results, scientists must get as much information as they can from an image.
A Columbia Engineering research team has invented a prototype video camera that is the first to be fully self-powered: It can produce an image each second, indefinitely, of a well-lit indoor scene. They designed a pixel that can not only measure incident light but also convert the incident light into electric power.
Univ. of Michigan scientists and students will build components of a giant camera that will map 30 million galaxies' worth of the universe in three dimensions. The camera is officially known as the Dark Energy Spectroscopic Instrument, abbreviated DESI, and it's designed to help answer one of the most puzzling scientific questions of our time: Why is the expansion of the universe accelerating?
To design the next generation of optical devices, ranging from efficient solar panels to LEDs to optical transistors, engineers will need a 3-D image depicting how light interacts with these objects on the nanoscale. Unfortunately, the physics of light has thrown up a roadblock in traditional imaging techniques: The smaller the object, the lower the image's resolution in 3-D.
Rice Univ. researchers are developing a highly accurate, touch-free system that uses a video camera to monitor patients’ vital signs just by looking at their faces. The technique isn’t new, but engineering researchers in Rice’s Scalable Health Initiative are making it work under conditions that have so far stumped earlier systems.
Imagine you need to have an almost exact copy of an object. Now imagine that you can just pull your smartphone out of your pocket, take a snapshot with its integrated 3-D imager, send it to your 3-D printer and, within minutes, you have reproduced a replica accurate to within microns of the original object. This feat may soon be possible because of a new, tiny high-resolution 3-D imager developed at Caltech.
Giving new meaning to the term “sonic boom,” Univ. of Illinois chemists have used sound to trigger microscopic explosions. Using an “ultrasonic hammer,” the researchers triggered tiny but intensely hot explosions in volatile materials, giving insight into how explosives work and how to control them.
A vibrational spectroscopic imaging technology that can take images of living cells could represent an advanced medical diagnostic tool for the early detection of cancer and other diseases. High-speed spectroscopic imaging makes it possible to observe the quickly changing metabolic processes inside living cells and to image large areas of tissue, making it possible to scan an entire organ.
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