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Metamaterial improves sensitivity of infrared absorption spectroscopy 100 times

IMAGE:  (Left) SEM image of the metamaterial absorber developed by KIMM and UNIST. Top view shows cross-shaped antenna. (Center) Side view of the microstructure of the metamaterial absorber. view more  Credit: The Korea Institute of Machinery and Materials (KIMM) A local research team, comprised of members of the Korea Institute of Machinery and Materials(KIMM) under the Ministry of Science and ICT and UNIST, developed a metamaterial absorber that significantly enhances the detection of harmful substances or biomolecules, and published their results in Small Methods. The joint research team led by Principal Researcher Dr. Joo-Yun Jung of the Nano-Convergence Mechanical Systems Research Division at KIMM and Professor Jongwon Lee of UNIST developed a metamaterial that enhances infrared absorption spectroscopy through 100-fold amplification of detection signals. The proposed metamaterial is a special functional material with vertical nanogaps of a smaller size than

Above the noise

 E-Mail IMAGE: Deep learning helps researchers to find hidden features in resistive pulse signals in nanopore sensing of nanoscale objects. view more  Credit: Osaka University Osaka, Japan - Scientists from the Institute of Scientific and Industrial Research at Osaka University used machine learning methods to enhance the signal-to-noise ratio in data collected when tiny spheres are passed through microscopic nanopores cut into silicon substrates. This work may lead to much more sensitive data collection when sequencing DNA or detecting small concentrations of pathogens. Miniaturization has opened the possibility for a wide range of diagnostic tools, such as point-of-care detection of diseases, to be performed quickly and with very small samples. For example, unknown particles can be analyzed by passing them through nanopores and recording tiny changes in the electrical current. However, the intensity of these signals can be very low, and is often buried under random

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