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Chip-based optical sensor detects cancer biomarker in urine

New technology lays groundwork for biosensors that improve disease diagnosis and monitoring

09-Dec-2019

For the first time, researchers have used a chip-based sensor with an integrated laser to detect very low levels of a cancer protein biomarker in a urine sample. The new technology is more sensitive than other designs and could lead to non-invasive and inexpensive ways to detect molecules that ...

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First all-metamaterial optical gas sensor

03-Sep-2019

Researchers have developed the first fully-integrated, non-dispersive infrared (NDIR) gas sensor enabled by specially engineered synthetic materials known as metamaterials. The sensor has no moving parts, requires little energy to operate and is among the smallest NDIR sensors ever created. The ...

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Sensitive new laser technique detects volatile organic compounds

Accurate measurements of mixed airborne molecules could improve breath alcohol tests, climate research and sensors for occupational health and safety

05-Jun-2019

Researchers have developed a new way of operating miniature quantum cascade lasers (QCLs) to rapidly measure the absorption spectra of different organic molecules in the air simultaneously. The technique offers a sensitive method for detecting low concentrations of volatile organic compounds ...

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Innovative sensing technique could improve greenhouse gas analysis

Innovative sensing technique could improve greenhouse gas analysis

12-Oct-2018

An international team of researchers has used an unconventional imaging technique known as ghost imaging to make spectroscopic measurements of a gas molecule. The new approach by scientists at Tampere University of Technology in Finland, the University of Eastern Finland and the University of ...

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Tiny chip-based methane spectrometer could help reduce greenhouse gas emissions

30-Oct-2017

The process of extracting natural gas from the earth or transporting it through pipelines can release methane into the atmosphere. Methane, the primary component of natural gas, is a greenhouse gas with a warming potential approximately 25 times larger than carbon dioxide, making it very ...

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New approach doubles 3-D resolution of fluorescence microscopy

16-Aug-2016

Researchers have developed a new fluorescence microscopy approach that significantly improves image resolution by acquiring three views of a sample at the same time. Their new method is particularly useful for watching the dynamics of biological processes, which can provide insights into how ...

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Optical approach offers faster and less expensive method for carbon dating

New highly sensitive spectroscopy method could offer on-site carbon dating and greenhouse gas measurements

08-Apr-2016

Researchers from Istituto Nazionale di Ottica (INO), within Consiglio Nazionale delle Ricerche (CNR), Italy have demonstrated a new compact spectroscopic instrument that offers a highly sensitive optical method for detecting radiocarbon dioxide concentration, which can be used to carbon date ...

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Giant clams offer clues to improve solar cells & color displays

Nature’s surprising method for creating white coloration could yield bio-inspired innovations

21-Jan-2016

Researchers from the University of California, Santa Barbara have discovered that some species of giant clams produce their white coloration much like the displays used in televisions and smartphones do – by combining red, green and blue light. The new findings could help improve solar cell ...

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Powerful plastic microscope brings better diagnostic care for world's rural poor

21-Oct-2015

You can learn a lot about the state of someone's immune system just by examining their blood under the microscope. An abnormally high or low white blood count, for instance, might indicate a bone marrow pathology or AIDS. The rupturing of white blood cells might be the sign of an underlying ...

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Pushing the limits of lensless imaging

23-Sep-2015

Using ultrafast beams of extreme ultraviolet light streaming at a 100,000 times a second, researchers from the Friedrich Schiller University Jena, Germany, have pushed the boundaries of a well-established imaging technique. Not only did they make the highest resolution images ever achieved with ...

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