Porous Silicon-Based Sensors and Biosensors
A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".
Deadline for manuscript submissions: closed (20 February 2022) | Viewed by 2149
Special Issue Editor
Interests: porous silicon layers; interferometers; photonic structures; characterization tools; biosensing
Special Issue Information
Dear Colleagues,
Porous materials have acquired a high relevance in the research and development of optical sensors due to their large surface to volume ratios, which allows the immobilization of even three orders of magnitude more bioreceptors than for a typical solid core optical structure.
Among different porous structures, porous silicon (PSi) has been widely studied due to its quick and inexpensive fabrication, which offers the possibility to realize different optical structures such as interferometers, optical microcavities, waveguides, ring resonators, photonic crystals, and rugate filters. Sensitivities around 1000 nm/refractive index unit (RIU), limits of detection in the 10-7 RIU range, and sensors with quality factors close to 9000 have been achieved with the previous structures. In parallel, new research trends are opening, like the ones based on PSi membranes or the combination of PSi layers with plasmonic metal nanoparticles and fluorescent quantum dots.
This Special Issue offers the possibility to gather the recent improvements on PSi fabrication steps, its uniformity, the design of patterns and nanostructures, the progress on its biofunctionalization, the characterization, and the use of new concepts in order to obtain highly sensitive optical sensors and biosensors.
It is my pleasure to invite you to submit a manuscript for this Special Issue with the latest results, research lines, and trends that you are currently obtaining or following. Full papers, communications, and reviews are all welcome.
Dr. Salvador Ponce Alcántara
Guest Editor
Manuscript Submission Information
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Keywords
- porous silicon
- photonic sensor
- interferometric structures
- label-free detection
- photonic–plasmonic devices
- photoluminescence
- biosensing
