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Nano Optical Sensing Techniques, Devices, and Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biosensors".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 1908

Special Issue Editors


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Guest Editor
Institute of Information Photonics Technology, Faculty of Science, Beijing University of Technology, Beijing 100124, China
Interests: ultrafast and nano optics; plasmonic nanophotonics; organic optoelectronics
Special Issues, Collections and Topics in MDPI journals

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Co-Guest Editor
Institute of Information Photonics Technology, Faculty of Science, Beijing University of Technology, Beijing 100124, China
Interests: two-dimensional materials; nonlinear optics; plamonic
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rapid progress in nanophotonics and plasmonics has pushed forward the development of optical sensors with high sensitivity and high specificity for various detection targets and different applications. New physics and material/device design have enabled breakthroughs in the detection limit and detection functions. Miniaturization and high integration are becoming some of most important development trends of nanophotonic sensors. Biosensors is launching a Special Issue on Nano Optical Sensing Techniques, Devices, and Applications. Contributions may focus on the physics, fabrication and detection techniques, device design and applications of nanophotonic sensors in different forms. Tentative topics may include the following: new physics or photophysical mechanisms in nanophotonics or plasmonics for sensor applications; design and fabrication of nanophotonic structures or devices for sensor applications; new materials or structures for surface-enhanced Raman scattering spectroscopy; sensing techniques and devices for high-sensitivity and high-specificity detection of bio-reactions, bio-molecules and low-concentration molecules in the forms of gas, vapor, or liquids; optical fiber-based nanophotonic or plasmonic devices for remote sensing; microstructure fibers or photonic crystal fibers for gas and liquid sensing; on-chip integration of different forms of sensing devices; design and fabrication of micro-/nano-cavities as sensing devices; micro- or nano-scale light-driven actuators in different spectral bands with low thresholds and high sensitivity.

Prof. Dr. Xinping Zhang
Dr. Jia Shi
Guest Editors

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Keywords

  • biosensors
  • gas or vapor sensors
  • direct detection of low-concentration molecules in liquids
  • photonic/plasmonic nanostructures and sensing applications
  • surface-enhanced Raman scattering (SERS) spectroscopy and applications
  • optical fibers in delivered or integrated nanophotonic sensors
  • micro-/nano-structured fiber sensors
  • micro-/nano-cavity sensors
  • on-chip optical sensors
  • light-driven micro-/nano-actuators

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Published Papers (1 paper)

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Research

13 pages, 4996 KiB  
Article
Dual-Function Meta-Grating Based on Tunable Fano Resonance for Reflective Filter and Sensor Applications
by Feifei Liu, Haoyu Jia, Yuxue Chen, Xiaoai Luo, Meidong Huang, Meng Wang and Xinping Zhang
Sensors 2023, 23(14), 6462; https://doi.org/10.3390/s23146462 - 17 Jul 2023
Viewed by 1376
Abstract
Localized surface plasmon resonance (LSPR)-based sensors exhibit enormous potential in the areas of medical diagnosis, food safety regulation and environmental monitoring. However, the broadband spectral lineshape of LSPR hampers the observation of wavelength shifts in sensing processes, thus preventing its widespread applications in [...] Read more.
Localized surface plasmon resonance (LSPR)-based sensors exhibit enormous potential in the areas of medical diagnosis, food safety regulation and environmental monitoring. However, the broadband spectral lineshape of LSPR hampers the observation of wavelength shifts in sensing processes, thus preventing its widespread applications in sensors. Here, we describe an improved plasmonic sensor based on Fano resonances between LSPR and the Rayleigh anomaly (RA) in a metal–insulator–metal (MIM) meta-grating, which is composed of silver nanoshell array, an isolation grating mask and a continuous gold film. The MIM configuration offers more freedom to control the optical properties of LSPR, RA and the Fano resonance between them. Strong couplings between LSPR and RA formed a series of narrowband reflection peaks (with a linewidth of ~20 nm in full width at half maximum (FWHM) and a reflectivity nearing 100%) within an LSPR-based broadband extinction window in the experiment, making the meta-grating promising for applications of high-efficiency reflective filters. A Fano resonance that is well optimized between LSPR and RA by carefully adjusting the angles of incident light can switch such a nano-device to an improved biological/chemical sensor with a figure of merit (FOM) larger than 57 and capability of detecting the local refractive index changes caused by the bonding of target molecules on the surface of the nano-device. The figure of merit of the hybrid sensor in the detection of target molecules is 6 and 15 times higher than that of the simple RA- and LSPR-based sensors, respectively. Full article
(This article belongs to the Special Issue Nano Optical Sensing Techniques, Devices, and Applications)
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