Category Physics

Controlling Ultrastrong Light-Matter Coupling at Room Temperature

Illustration
Researchers have shown that it is possible to create a controllable ultrastrong light-matter coupling at room temperature. The interaction is realised within a tiny system consisting of two gold mirrors separated by a small distance and plasmonic gold nanorods. The discovery is of importance for fundamental research and might pave the way for advances within, for example, light sources, nanomachinery, and quantum technology.​​​​​ â€‹Illustration: Denis Baranov

Physicists at Chalmers University of Technology in Sweden, together with colleagues in Russia and Poland, have managed to achieve ultrastrong coupling between light and matter at room temperature...

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Parylene Photonics enable Future Optical Biointerfaces

A Parylene photonic waveguide surrounded by neurons.
CREDIT
Carnegie Mellon University College of Engineering

Carnegie Mellon University’s Maysam Chamanzar and his team have invented an optical platform that will likely become the new standard in optical biointerfaces. He’s labeled this new field of optical technology “Parylene photonics,” demonstrated in a recent paper in Nature Microsystems and Nanoengineering.

There is a growing and unfulfilled demand for optical systems for biomedical applications. Miniaturized and flexible optical tools are needed to enable reliable ambulatory and on-demand imaging and manipulation of biological events in the body. Integrated photonic technology has mainly evolved around developing devices for optical communications...

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Physicists develop Printable Organic Transistors

Upper panel: Layer sequence of an vertical organic permeable base transistor with two independently tunable base electrodes. Lower panel, left: Transfer-characteristics of such a transistor. Right: Adjustability of the turning-on voltage using the second base electrode.

Scientists have come a step closer to the vision of a broad application of flexible, printable electronics. The team has succeeded in developing powerful vertical organic transistors with two independent control electrodes.

High-definition roll-up televisions or foldable smartphones may soon no longer be unaffordable luxury goods that can be admired at international electronics trade fairs...

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New Type of Superconductor identified

This illustration shows a crystal lattice of strontium ruthenate responding to various sound waves sent via resonant ultrasound spectroscopy as the material cools through its superconducting transition at 1.4 kelvin (minus 457 degrees Fahrenheit). The highlighted deformation suggests the material may be a new type of superconductor.   

Until now, the history of superconducting materials has been a tale of two types: s-wave and d-wave. Now, Cornell researchers — led by Brad Ramshaw, the Dick & Dale Reis Johnson Assistant Professor in the College of Arts and Sciences — have discovered a possible third type: g-wave.

Their paper, “Thermodynamic Evidence for a Two-Component Superconducting Order Parameter in Sr2RuO4,” published Sept. 21 in Nature Physics...

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