A new microscopy method that ditches lenses altogether could create the highest-resolution images ever seen. The system reconstructs an image from the electron waves scattered by a sample, and has no fundamental experimental limits imposed by constraints like blurry glass or wavelengths of visible light. It can even be used to image live cells without harming them.
A new microscope combines a normal optical scope with a see-through microsphere superlens, beating the diffraction limit of light and shattering the limits of optical microscopes.
With the new method, there is theoretically no limit on how small an object researchers will be able to see. It could potentially see inside human cells and examine live viruses for the first time.
Nanoparticles are known for their strange and unexpected properties, like providing bendable ceramics, switchable magnetization and so on. To figure out why these things happen, it would be useful to see how the structures are built, but it's hard to take a picture of a thinly stretched clump of atoms.
Now a group of researchers in Europe have figured out a way to do it, and translate those pictures into colorful 3-D graphics that allow them to count individual atoms and see how they're arranged.
And you thought the macros on your camera was good because you got a sweet close up of a flower? Well, the scientists over at Oak Ridge National Laboratory zoom in so tight they can distinguish atoms of different elements. Using a special z-contrast scanning electron microscope, researchers at Oak Ridge took the first picture detailed enough to differentiate different atoms within a chemical compound. This super-high resolution scanning may play an important role in the future of materials chemistry, where tiny atomic differences can have profound effects on the properties of different chemical compounds.
A post-9/11, post-anthrax funding boom has made the nation’s “hot zones” the hottest research areas around. Is this a good thing?
By Jeffrey RothfederPosted 03.01.2005 at 6:00 pm 0 Comments
Before entering his lab, Ramon Flick puts on a 10-pound plastic space suit with a bubble helmet, a double pair of rubber gloves sealed to the suit at the wrists, and boots. The 35-year-old director of the Biosafety Level 4 lab at the University of Texas Medical Branch
at Galveston walks past a chemical
shower and into the lab space, a 2,000-square-foot sterilized white room. An airtight door slams shut behind him.