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Tiny lasers from a gallery of whispers

21-Sep-2017

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a phenomenon similar to an effect observed in circular galleries, such as in some cathedrals or museums, where sound waves travel across the ...

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New Filter Technology – Uses Inert Gas to Bore Holes in High-Quality Steel

01-Sep-2014

Two early-stage venture capital investors are joining the i3 Membrane GmbH startup in August 2014. High-Tech Gründerfonds (HTGF) of Bonn and Innovationsstarter Fonds of Hamburg are investing in development and marketing of a novel filter technology. The new high-tech membrane is made of ...

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New way to filter light

System could provide first method for filtering light waves based on direction

31-Mar-2014

Light waves can be defined by three fundamental characteristics: their color (or wavelength), polarization, and direction. While it has long been possible to selectively filter light according to its color or polarization, selectivity based on the direction of propagation has remained ...

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Tiny tool can play big role against tuberculosis

21-May-2012

A tiny filter could have a big impact around the world in the fight against tuberculosis. Using the traditional microscope-based diagnosis method as a starting point, a University of Florida lung disease specialist and colleagues in Brazil have devised a way to detect more cases of the bacterial ...

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Porvair Filtration Report Strong Gain in 2011

30-Aug-2011

Porvair Filtration Group, specialists in media and equipment for filtration and separation applications, has announced a strong increase in sales for the first half of fiscal year 2011. This growth is reflected in the half yearly results reported by parent company - Porvair plc for its ...

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Building a smaller, lighter future: Understanding polymer behaviors below 1 nanometer

13-Oct-2010

Knowing how to build nanosized assemblies of polymers (long molecular chains) holds the key to improving a broad range of industrial processes, from the production of nanofibers, filters, and new materials to the manufacture of low-energy, nanoscale circuits and devices. A recent paper in Nature ...

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New technique enables drugs tests via exhaled breath

20-May-2010

A new study from Karolinska Institutet presents a new technique that makes drug testing possible through exhaled air for the first time. By examining people who had received emergency care for an amphetamine overdose, the researchers found that in all cases there were traces of amphetamine and ...

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Sculptured materials allow multiple channel plasmonic sensors

12-Nov-2009

Sensors, communications devices and imaging equipment that use a prism and a special form of light -- a surface plasmon-polariton -- may incorporate multiple channels or redundant applications if manufacturers use sculptured thin films. "Everyone uses surface plasmon resonance sensors. They are ...

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Tracing ultra-fine dust

06-Oct-2009

Limit values for fine dust emissions are based on total particle weight. It is the ultra-fine particles, however, that are particularly harmful to health. A new technique separates them by size and identifies their composition - directly where they arise. Fine particle emissions have been the ...

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Portable and precise gas sensor could monitor pollution and detect disease

22-Sep-2009

In the air, it is a serious pollutant. In the body, it plays a role in heart rate, blood flow, nerve signals and immune function. Nitric oxide, a gas well known to scientists for its myriad functions, has proven challenging to measure accurately outside the laboratory. A team of Princeton and ...

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