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Related Concept Videos

Polymers02:34

Polymers

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
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Modes of Standing Waves - I01:03

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A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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Polymer Based Whispering Gallery Mode Humidity Sensor.

Ann Britt Petermann1, Thomas Hildebrandt2, Uwe Morgner3

  • 1Hannover Centre for Optical Technologies (HOT), Leibniz Universität Hannover, Nienburger Strasse 17, D-30167 Hannover, Germany. ann-britt.petermann@hot.uni-hannover.de.

Sensors (Basel, Switzerland)
|July 25, 2018
PubMed
Summary
This summary is machine-generated.

We developed a simple, inexpensive all-polymer whispering gallery mode (WGM) resonator sensor. This sensor demonstrates high sensitivity for relative humidity measurements, showing potential for practical applications.

Keywords:
humidity sensorintegrated optics devicepolymer photonics

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Area of Science:

  • Materials Science
  • Sensor Technology
  • Optics

Background:

  • Whispering gallery mode (WGM) resonators offer high sensitivity for sensing applications.
  • Current WGM sensor technology often involves complex and costly manufacturing and readout processes.
  • There is a need for more accessible and affordable WGM sensor solutions.

Purpose of the Study:

  • To develop and evaluate a simple, inexpensive all-polymer WGM sensor concept.
  • To assess the sensor's performance for relative humidity (RH) measurements.
  • To demonstrate the potential of this novel sensor for real-world applications.

Main Methods:

  • Fabrication of an all-polymer WGM resonator.
  • Integration of the WGM resonator into a sensor setup.
  • Experimental evaluation of the sensor's response to varying relative humidity levels.

Main Results:

  • Successful realization of a cost-effective all-polymer WGM sensor.
  • Demonstrated sensitivity of 47 picometers per percent relative humidity (pm/% RH).
  • The sensor exhibited promising performance characteristics for RH sensing.

Conclusions:

  • The developed all-polymer WGM sensor offers a simple and inexpensive alternative to existing technologies.
  • The sensor's high sensitivity makes it suitable for practical relative humidity monitoring.
  • This technology holds significant potential for deployment in diverse real-life applications and environments.