Adding noise to enhance a weak signal is a sensing phenomenon common in the animal world but unusual in manmade sensors. Now Penn State researchers have added a small amount of background noise to enhance very weak signals ...
General Physics
Sep 3, 2020
3
800
Holst Center has demonstrated the world's first organic near-infrared large-area image sensor capable of detecting the unique pattern of veins in a person's hand via reflected light. The sensor opens the door to highly secure, ...
Optics & Photonics
Jul 15, 2020
0
5
Smart windows that automatically change colors depending on the intensity of sunlight are gaining attention as they can reduce energy bills by blocking the sun's visible rays during summer. But what about windows that change ...
Materials Science
May 29, 2020
0
29
Researchers at Eindhoven University of Technology have developed a new, integrated optical sensor that provides increased resolution in measurements and paves the way for fully integrated and compact optical sensors including ...
Bio & Medicine
May 20, 2020
0
39
Scientists have taken inspiration from the biomimicry of butterfly wings and peacock feathers to develop an innovative opal-like material that could be the cornerstone of next generation smart sensors.
Materials Science
May 19, 2020
0
336
Photonic cavities are an essential part of many modern optical devices, from laser pointers to microwave ovens. Just as we can store water in a tank and create standing waves on the surface of the water, we can confine light ...
Optics & Photonics
Mar 25, 2020
0
180
A new camera-based method for measuring building deformations can detect small displacements from 10 meters away. The method could be useful for continuously detecting fast deformations in high-rise buildings, bridges and ...
Optics & Photonics
Mar 16, 2020
0
105
Optical fibers enable our era of the internet, as they carry vast amounts of data all around the world. Fibers are also an excellent sensor platform. They can reach over hundreds of kilometers, simply embedded within structures, ...
Optics & Photonics
Mar 9, 2020
0
44
Cameras, light barriers, and movement sensors have one thing in common: They work with light sensors that are already found in many applications. In future, these sensors might also play an important role in telecommunications, ...
Materials Science
Feb 24, 2020
0
7
In conventional sensing methods, noise is always a problem, especially in systems that are meant to detect changes in their environment that are hardly bigger or even smaller than the noise in the system. Encountering this ...
Optics & Photonics
Feb 14, 2020
0
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