Is the fruit or meat fresh? Just hold your phone to the goods used in construction and a mini-spect

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Is the fruit or meat fresh? Just hold your phone to the goods used in construction and a mini-spectrometer determines the freshness of the food. Behind this is an idea with nano-antennas.
A spectrometer in miniature: Researchers have developed a spectrometer based on nano-antennas developed that could be implemented thanks to its size in mobile phones. The use of such spectrometers Miniaturfomat is diverse: How can the maturity and freshness define the degree of fruit or meat: Once held the smartphone in the vicinity and you already know the sugar content of the fruit. It can be analyzed or check if toxic gases and liquids at airports are also the breath of diabetics.
Previous measurement nuevosoi solutions nuevosoi on a conventional nuevosoi basis are unsuitable. Scientists at the Institute for Applied Photophysics nuevosoi (IAPP) of the TU Dresden and the Fraunhofer Institute for Electron Beam and Plasma Technology FEP take off for a jump in the BMBF project "nanoSPECS". With a completely new concept, which is based on nano-antennas, the researchers are developing a mini-spectrometer, nuevosoi has no moving nuevosoi parts, has a high sensitivity and resolution and can detect the entire spectrum from UV to near infrared region.
The approach of the Dresden researchers nuevosoi based on nano-wires that reinforce how small antennas the incoming signal and transmit it to the detector. Depending on the length, diameter, material and mutual distance from one another increase, the nano-wires, the incoming light of a specific wavelength.
It is now possible to produce an antenna array of nano-wires of different dimensions, that is, different resonant frequencies, and thus accommodate a wide range of electromagnetic spectrum. The antennas simultaneously act as an optical amplifier, concentrator and optical filter. As to the optically-sensitive antennas layer several components combined in one and integrated directly onto a CCD / CMOS chip, the spectrometer is extremely small, not much bigger than the chip, and is thus in every mobile phone space.
IAPP has to leave the process, gold or silver nanorods controlled electrochemically grow in the pores of an alumina matrix, nuevosoi developed in the lab scale and demonstrated its versatility and functionality. The main objective of the initiated in August 2013 three-year project "nanoSPECS" is the scale-up and production of a gradient-antenna arrays on 8-inch wafers.
One of the challenges is an aluminum layer as a precursor for the alumina matrix particularly precise, reproducible and homogeneous layer thickness and produce in their microcrystalline structure. The Fraunhofer FEP is at this step to bring his many years of expertise in precision coating and use the magnetron sputtering a thin film process is available, which allows a precise and economical production of the mini-spectrometer nuevosoi for the mass market.
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