Smart Dust: Cameras 'Smaller Than Sand' Now Films Each Of Your Movements


University Stuttgart researchers have developed a new type of camera "smart dust" smaller than the size of a miniature sand grain. Experts say the German camera, with new 3D printing technology are created to allow scientists to see more complex people in detail.
Newstarget.com reports: Experts say the sophisticated technology Mikron accuracy delivers to users to print 3D optical systems with four lenses. The resulting multi-lens system provides the opportunity to correct the aberration to help a condition in which the lens, which delivers all the wavelengths in a single focal color, which in turn can provide images of quality from smaller devices.

The researchers developed the 3D glasses with a sensitive light beam on a glass substrate with a femtosecond laser pulse duration material with less than 100 femtoseconds. The then exposed absorbs two photon materials and cross-linked polymers in the material. The non-exposed material was washed with a solvent to leave the cured polymer, crosslinked, and then serves as the optical element.

The diameter of the resulting lens is about 120 millionths of a meter which makes them as small as a grain cooked salt. The lenses can narrow out wide area and can provide a low resolution image. Each lens has a specific line of sight - clear in the middle, blurred sides - crowned by a bend at the end. This mechanism mimics, like the fovea, a small indentation in the center of the retina that collects light and as the brain images of the two eyes connects to achieve a single separate image.

The innovative process allows a variety of models to be tested for high quality images. The researchers also found that because it is printed in one piece, the goal is easier to configure. Any configuration designed on a computer can be easily printed and used, according to the researchers. The lens can also be printed in a separate optical fiber sensor image.

The imaging method allows researchers to assemble components for optical microscopes of 125 μm, M and glued to a thin optical fiber 1.7 m. The camera at the end of this small endoscope has the ability to focus on the images at a distance of 0.12 inches. The complete image of the system perfectly into a needle of a syringe that opens up opportunities for direct delivery to various organs, including the brain. The researchers say that future applications of this highly miniaturized camera system can absorb images of the less invasive body.

Experts call the original limits of the camera

To better evaluate the various applications of the lens, the developer also printed on a chip CMOS image to achieve a small sensor. The researchers found that the mechanism of production was fast and could result in small UAV camera. "The time of the idea, optical design, a CAD model to the end, printed micro targets in 3D will be less than a day.Open potential like the computer-aided design and integrated computer manufacturing in mechanical engineering, According to Professor Harald Giessen, 4th Physical Institute of the University of Stuttgart.

"Further improvements include antireflex coatings on lenses or by coating or by nanostructuring, the use of triplets or multiple aberration correction lenses, and the absorption of the opening times to absorb stops 1. 2 hours for a purpose, high volume cheap manufacture is currently difficult. However, the impression that laminar support and the direct UV-curing chassis shell can reduce manufacturing time ... ", added the researcher.

The research was published in the journal Nature Photonics.

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