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A new scheme for cooling a mechanical oscillator in a cavity may allow the observation of quantum effects on macroscopic objects and the realization of ultrasensitive gravitational-wave detectors.
Researchers generated an electron beam with very high orbital angular momentum—potentially good for atomic-scale images of the magnetism in materials.
An array of nanometer-sized aluminum pyramids acts as a directional antenna for light, and the direction depends on wavelength.
A laser-driven particle accelerator, delivering a beam of electrons with a record-breaking energy of 4.2 giga-electron-volts, could lead to compact x-ray lasers or high-energy colliders.
The polarization of an intense laser beam can theoretically be controlled by mixing it with a second beam in a plasma.