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Nanotechnology
Double with Metasurface: Double layer devices can control many forms of polarization
Scanning electron microscope images of titanium dioxide metatras. Credit: Capasso Group / Harvard Seas Almost a decade ago, Harvard engineers introduced Lulatai’s thin flat device, the world’s first visible spectral metasurface, patterned with nanoscale structures that allow precise control of light behavior. Today, a powerful alternative to traditional bulky optical components, Metasurfaces enables compact, lightweight, multifunctional applications ranging from imaging…
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Physics
Physicists use optical vortex beams to control atomic ionization
OAM-dependent ionization at atoms. Credit: Natural Communication (2025). doi:10.1038/s41467-025-57618-8 A team of researchers at the University of Ottawa has made great strides in understanding the ionization of atoms and molecules, a fundamental process in physics that affects a variety of fields such as x-ray generation and plasma physics. A study entitled “Orbital Angle Momentum Control of Strong Field Ionization in…
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Physics
Adjustable Asymmetric Hysteresis Loop: Researchers develop methods to control magnetic inversion in Weyl Semimetal
Graphical abstract. Credit: Materials Physics Today (2025). doi: 10.1016/j.mtphys.2024.101642 Recently, the researchers have found a new way to control magnetic inversion with a special material called Co3SN2S2, a Weyl Semimetal. The team was led by the Hefei Physical Science of the Physical Science of the Physical Science of the Physical Science of the Physical Science of the Physical Science of…
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Other Sciences
The power of the party is the key to dictators who maintain control amid corruption, research discovers
Credit: Pixabay/CC0 Public Domain A new study from the University of Massachusetts Amherst University provides new insight into why some dictatorial governments are attracting larger protests than others corruption, despite rampaging by some dictatorial governments. Published in the Journal Democratization, this study shows that ruling parties with deep institutional roots can effectively isolate rulers with absolute power from the destabilizing…
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Nanotechnology
A collection of small antennas can amplify and control polarization in any direction
A new polarization-independent, highly resonant metasurface directs incoming light (top left) and allows accurate amplification and control of light without the need to move in a specific direction. Credit: Bo Zhao Antennas receive and transmit electromagnetic waves, and distribute information to radio, television, mobile phones, etc. Researchers at McKelby’s Faculty of Engineering at Washington University in St. Louis imagine a…
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Nanotechnology
Nanogates use voltage to control the passage of molecules through small pores
A schematic model depicting single molecule DNA via nanoprecipitated nanopores. Credit: Makusu Tsutsui The collaboration, led by researchers at Osaka University, has developed a nanogate that can be opened and closed by applying electricity. Nanogates exhibit a variety of behavior depending on the material in the solution on either side of the gate and the applied voltage, making them attractive…
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Science
High-speed control technique enables record fidelity in superconducting qubits
In the artist’s impression of a recent MIT experiment, the sphere in the center represents a qubit, illuminated by two control signals: electric charge (blue) and magnetic flux (purple). These control signals are designed to combine to produce circularly polarized microwaves that are not affected by counter-rotation effects. The signals consist of repeating waveforms and represent the similarity of control…
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Nanotechnology
Single-atomic metal layer reveals unexpected spin-polarized current control by light
When circularly polarized light is applied to a thallium-lead alloy, the majority of the electrons “up-spin” and flow in the correct direction (spin-polarized current). Credit: Taniuchi et al. 2025 Researchers at the University of Tokyo have demonstrated that the direction of spin-polarized current is restricted to only one direction in a single atomic layer of a thallium-lead alloy when irradiated…
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Nanotechnology
Advances in optical control: new opportunities for metasurfaces in optoelectronics
Optoelectronic metadevice. Effectively integrating metasurfaces into electronic devices requires a careful co-design approach that addresses both photonic and electronic components. Metadevices can be classified into three types depending on their functionality: (i) Light emitting devices (LEDs, displays, lasers). (ii) Modulation devices (spatial light modulators, LIDAR, switches). (iii) absorption devices (detectors, imagers, solar cells); Credit: Science (2024). DOI: 10.1126/science.adm7442 A global…
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Science
Organometallic framework films improve isomer separation control
Schematic representation of dynamic chemical functionalities in oriented nanoporous metal-organic framework thin films. Credit: Nature Communications (2024). DOI: 10.1038/s41467-024-53207-3 Researchers have developed a method to enhance the separation of chemical isomers by controlling molecular diffusion. They utilized metal-organic framework thin films and applied dynamic chemical interactions to tune pore dynamics and anti-isomer diffusion priorities. Their research is published in Nature…
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