Quantum sensors detect the smallest of environmental changes—for example, an atom reacting to a magnetic field. As these sensors "read" the unique behaviors of subatomic particles, they also dramatically improve scientists' ...
Condensed Matter
May 3, 2024
0
41
A research team at the University of Pittsburgh led by Alexander Star, a chemistry professor in the Kenneth P. Dietrich School of Arts and Sciences, has developed a fentanyl sensor that is six orders of magnitude more sensitive ...
Bio & Medicine
May 2, 2024
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90
Researchers at the University of São Paulo (USP) in Brazil have developed a bioelectronic chip that simultaneously detects vitamins C and D in body fluids. It is flexible and easy to see and can be adapted for use in a wearable ...
Bio & Medicine
Apr 24, 2024
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1
Gas sensors have been widely applied in areas such as medical health, environmental monitoring, and food safety. However, current gas sensors still face several challenges, including low sensitivity, long response and recovery ...
Analytical Chemistry
Apr 22, 2024
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1
Tagging marine animals with sensors to track and study their movements can provide researchers with important environmental and behavioral information, including energy usage, habitat changes, and migration patterns. But ...
Ecology
Apr 16, 2024
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99
Spectroscopic ellipsometry is widely adopted in semiconductor processing, such as in the manufacturing of integrated circuits, flat display panels, and solar cells. However, a conventional spectroscopic ellipsometer, as shown ...
Optics & Photonics
Apr 11, 2024
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27
Optical sensors serve as the backbone of numerous scientific and technological endeavors, from detecting gravitational waves to imaging biological tissues for medical diagnostics. These sensors use light to detect changes ...
Optics & Photonics
Apr 6, 2024
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146
Small, low-cost sensors developed by space scientists at The University of Texas at Dallas to study the Earth's upper atmosphere recently—and unexpectedly—provided information about the sun, something the devices were ...
Planetary Sciences
Apr 4, 2024
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1
DGIST's Physics and Chemistry Professor Park Jin-hee and her research team have developed a technology that allows easy detection of hazardous chemicals. Allowing one to detect harmful substances by analyzing color changes ...
Analytical Chemistry
Mar 29, 2024
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2
Versatility and miniaturization of imaging systems are of great importance in today's information society. Microscopic imaging techniques have always been indispensable for scientific research and disease diagnosis in the ...
Optics & Photonics
Mar 29, 2024
0
30
A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, all sensors need to be calibrated against known standards.
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