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Science

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Diamond, nitrogen vacancy center, Irradiation, magnetic detection, Carbon, Quantum, Microscope, microscope imaging, D. Farfurnik, N. Alfasi, S. Masis, Y. Kauffmann, E. Farchi, Y. Romach, Y. Hovav, E. Buks , N. Bar-Gill, Hebrew University of Jerusalem, Technion – Israel Institute of Technology, Technion, Applied Physics Letters

Enhancing the Sensing Capabilities of Diamonds with Quantum Properties

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When a nitrogen atom is next to the space vacated by a carbon atom, it forms what is called a nitrogen-vacancy center. Now, researchers have shown how they can create more NV centers, which makes sensing magnetic fields easier, using a relatively simple method that can be done in many labs. They describe their results this week in Applied Physics Letters.

Science

Channels:

whispering gallery, micro-laser, whispering gallery mode, Resonators, tunable laser, Laser, Optics, Photonics, T. Siegle, M. Remmel, S. Krammer , H. Kalt, Karlsruhe Institute of Technology, APL Photonics

Tiny Lasers from a Gallery of Whispers

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Whispering gallery mode resonators rely on a phenomenon similar to an effect observed in circular galleries, and the same phenomenon applies to light. When light is stored in ring-shaped or spherical active resonators, the waves superimpose in such a way that it can result in laser light. This week in APL Photonics, investigators report a new type of dye-doped WGM micro-laser that produces light with tunable wavelengths.

Science

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Birdsong, birdsong production, vocal organs, biomechanism, nonlinear dynamics, Biophysics, Gabriel B. Mindlin, University of Buenos Aires, Chaos

Nonlinear Physics Bridges Thoughts to Sounds in Birdsong

Physicist Gabriel Mindlin has been looking at the phenomena from what is one of the most unifying and potentially enlightening perspectives of the issue: the dynamical physics of birds’ vocal organs. In his work, published this week in the journal Chaos, he explores the role of fundamental physics properties in the acoustic complexity of birdsong, and the relationship they have with neural instructions for their production.

Science

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Fluorescent, Fluorescent Microscopy, Microscopy, on-chip cell analysis, Microfluid, chip-based, on-chip, Microfluidic, Automation, Hiroaki Takehara, Osawa Kazutaka, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, AIP Advances

Fluorescence Microscopy on a Chip -- No Lenses Required

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Fluorescence microscopy gives researchers power to illuminate the tiniest structures and capture the real-time activities of cells by tagging biological molecules with a rainbow of fluorescent dyes. Researchers have developed a system that enables scientists to rapidly image fluorescent cells grown inside the chip using a CMOS image sensor, the same technology found in the camera of a smartphone. The new system, described this week in AIP Advances, has numerous potential uses in biomedical research.

Science

Channels:

bistability, electro-optical, Data Transfer, Transistor, Optical Absorption, Electronics, M. Feng, N. Holonyak Jr., C.Y. Wang, University of Illinois at Urbana-Champaign, Journal of Applied Physics

Optical and Electrical Bistability Study Sheds Light on Next-Gen High Speed Data Transfer

Today, electrical bistable devices are the foundation of digital electronics, but the bandwidth of these electronic computers is limited by the signal delay of time constants important to electronic logic operations. In an attempt to mitigate these problems, scientists have considered the development of an optical digital computer. This week, in the Journal of Applied Physics, researchers present their findings regarding the optical and electrical bistability of a single transistor operated at room temperature.

Science

Channels:

Nano Device, Physics, Optics, Sensing

Sensing with a Twist: A New Kind of Optical Nanosensor Uses Torque for Signal Processing

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An international group of researchers have put a literal twist on this challenge, demonstrating a new nanoscale optomechanical resonator that can detect torsional motion at near state-of-the-art sensitivity. Their resonator, into which they couple light, also demonstrates torsional frequency mixing, a novel ability to impact optical energies using mechanical motions.

Science

Channels:

plant waste, Biofuel, Bioplastics, re-engineering, Mutations, bacterial enzymes, Bacteria, protein module, Mateusz Chwastyk, Andrés M. Vera, Albert Galera-Prat, Melissabye Gunnoo, Damien Thompson, Mariano Carrión-Vázquez, Marek Cieplak, polish academy of sciences, Consejo Superior de Investigaciones Científicas, University of Limerick, The Journal Of Chemical Physics

Getting to the Point (Mutations) in Re-Engineering Biofuel-Producing Bacterial Enzymes

Helping bacteria become more efficient when breaking down fibrous plant waste into biofuel could result in more affordable biofuels for our gas tanks and sustainable products such as bioplastics. One way to achieve this goal is to re-engineer the bacterial enzyme complexes, called cellulosomes, which serve as catalysts in the degradation process. Researchers discuss one method to produce cellulosomes in The Journal of Chemical Physics.

Science

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Plasma, Turbulence, Atmospheric Pressure Plasma Jet, atmospheric pressure plasma, therapeutic radicals, plasma jets, Surgery, Amanda Lietz, Eric Johnsen, Mark J. Kushner, University Of Michigan, Applied Physics Letters

The Turbulent Healing Powers of Plasma

Non-equilibrium atmospheric pressure plasma can help heal wounds, destroy cancer cells and kill harmful bacteria. The jets of plasma that doctors might use, however, often become turbulent with the direction and velocity changing dramatically. Now, researchers have found this turbulence likely emerges from heat-induced sound waves generated at the plasma electrodes. This new insight is critical for more consistent and effective medical therapies. The researchers discuss their work in this week’s Applied Physics Letters.

Science

Channels:

Wind Energy, Wind Atlas, New European Wind Atlas , wind energy assessment, wind energy potential, wind models, Erik Lundtang Petersen, Technical University of Denmark, Journal of Renewable and Sustainable Energy

Finding Better Wind Energy Potential with the New European Wind Atlas

Over the last 25 years, the world has seen an increased dependency on wind energy that promises to continue growing. This has created an ever-evolving process to develop a method that can accurately assess a region’s wind energy potential. The European Union and other countries have begun development of the New European Wind Atlas, the details of which a Danish researcher discusses in this week’s Journal of Renewable and Sustainable Energy.

Science

Channels:

aeroice, ice, water phases, ultralow density, ice phases, polymorphs, Molecular Dynamics, Takahiro Matsui, Masanori Hirata, Takuma Yagasaki, Masakazu Matsumoto, Hideki Tanaka, Okayama University, The Journal Of Chemical Physics

Aeroices: Newly Discovered Ultralow-Density Ice

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Relatively little is known about the effects of extreme negative pressure on water molecules. Exploring a significant region of negative pressure through molecular dynamic simulations, researchers have now theoretically discovered a new family of ice phases. Called aeroices, these ices have the lowest density of all known ice crystals. The researchers report their findings this week in The Journal of Chemical Physics.







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