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High-resolution electroluminescent imaging of pressure distribution using a piezoelectric nanowire LED array
An array of piezoelectric nanowire LEDs with a pixel density of 6,350 dpi is capable of mapping two-dimensional pressure distributions with a spatial resolution of 2.7 micrometres. Pressure alters the light emissions from the LEDs, which are then imaged. Possible applications include artificial skin, robotics and touchpads.
- Caofeng Pan
- , Lin Dong
- & Zhong Lin Wang
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Article |
Tenfold reduction of Brownian noise in high-reflectivity optical coatings
By employing monocrystalline semiconductor materials as high-quality optical coatings, the long-standing challenge of minimizing the optical phase noise produced by Brownian motion in a multilayer has been overcome. A thermally limited noise floor consistent with a tenfold reduction in mechanical damping relative to that in the best dielectric multilayers is achieved.
- Garrett D. Cole
- , Wei Zhang
- & Markus Aspelmeyer
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