articleNano LettersJun 18, 2010Closed access

Infrared Perfect Absorber and Its Application As Plasmonic Sensor

NLNa LiuMMMartin MeschTWThomas WeißMHMario HentschelHGHarald Gießen

University of Stuttgart

PubMed
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Abstract

We experimentally demonstrate a perfect plasmonic absorber at lambda = 1.6 microm. Its polarization-independent absorbance is 99% at normal incidence and remains very high over a wide angular range of incidence around +/-80 degrees. We introduce a novel concept to utilize this perfect absorber as plasmonic sensor for refractive index sensing. This sensing strategy offers great potential to maintain the performance of localized surface plasmon sensors even in nonlaboratory environments due to its simple and robust measurement scheme.

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Authors

5

Topics & keywords

Topics
Keywords
  • Plasmon
  • Polarization (electrochemistry)
  • Absorbance
  • Materials science
  • Refractive index
  • Optoelectronics
  • Surface plasmon
  • Optics
UN Sustainable Development Goals
  • Affordable and clean energy
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