scholarly journals Label-free sensitivity of long-period gratings enhanced by atomic layer deposited TiO_2 nano-overlays

2015 ◽  
Vol 23 (7) ◽  
pp. 8441 ◽  
Author(s):  
Mateusz Smietana ◽  
Marcin Koba ◽  
Ewa Brzozowska ◽  
Krzysztof Krogulski ◽  
Jakub Nakonieczny ◽  
...  
Keyword(s):  
Atomic Layer ◽  
Label Free ◽  
Long Period ◽  
Long Period Gratings

High-Performance Label-Free Biosensing by Long Period Gratings

2015 ◽  
Author(s):  
F. Baldini ◽  
F. Chiavaioli ◽  
A. Giannetti ◽  
S. Tombelli ◽  
C. Trono
Keyword(s):  
High Performance ◽  
Label Free ◽  
Long Period ◽  
Long Period Gratings

Long-period gratings in photonic crystal fiber as an optofluidic label-free biosensor

2011 ◽  
Vol 26 (12) ◽  
pp. 4774-4778 ◽  
Author(s):  
Zonghu He ◽  
Fei Tian ◽  
Yinian Zhu ◽  
Nina Lavlinskaia ◽  
Henry Du
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Label Free ◽  
Crystal Fiber ◽  
Long Period ◽  
Long Period Gratings

scholarly journals Capability for Fine Tuning of the Refractive Index Sensing Properties of Long-Period Gratings by Atomic Layer Deposited Al2O3 Overlays

Sensors ◽  
2013 ◽  
Vol 13 (12) ◽  
pp. 16372-16383 ◽  
Author(s):  
Mateusz Śmietana ◽  
Marcin Myśliwiec ◽  
Predrag Mikulic ◽  
Bartłomiej Witkowski ◽  
Wojtek Bock
Keyword(s):  
Refractive Index ◽  
Atomic Layer ◽  
Fine Tuning ◽  
Sensing Properties ◽  
Long Period ◽  
Refractive Index Sensing ◽  
Long Period Gratings

scholarly journals Label-free Gram-negative bacteria detection using bacteriophage-adhesin-coated long-period gratings

2016 ◽  
Vol 7 (3) ◽  
pp. 829 ◽  
Author(s):  
Ewa Brzozowska ◽  
Marcin Koba ◽  
Mateusz Śmietana ◽  
Sabina Górska ◽  
Monika Janik ◽  
...  
Keyword(s):  
Bacteria Detection ◽  
Gram Negative Bacteria ◽  
Label Free ◽  
Gram Negative ◽  
Long Period ◽  
Long Period Gratings

A protein-based biointerfacing route toward label-free immunoassays with long period gratings in transition mode

2012 ◽  
Vol 31 (1) ◽  
pp. 486-491 ◽  
Author(s):  
Pierluigi Pilla ◽  
Annamaria Sandomenico ◽  
Viera Malachovská ◽  
Anna Borriello ◽  
Michele Giordano ◽  
...  
Keyword(s):  
Label Free ◽  
Transition Mode ◽  
Long Period ◽  
Long Period Gratings

Tuning properties of long-period gratings by atomic layer deposited zinc oxide nano-coating

2013 ◽  
Author(s):  
Mateusz Śmietana ◽  
Marcin Myśliwiec ◽  
Jakub Grochowski ◽  
Wojtek J. Bock ◽  
Predrag Mikulic ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Atomic Layer ◽  
Long Period ◽  
Long Period Gratings ◽  
Nano Coating

Label-free detection of Escherichia coli bacteria by cascaded chirped long period gratings immunosensor

2019 ◽  
Vol 90 (2) ◽  
pp. 025003 ◽  
Author(s):  
Siddharth Kaushik ◽  
Umesh Tiwari ◽  
Nilima ◽  
Shivendu Prashar ◽  
Bhargab Das ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Label Free ◽  
Long Period ◽  
Long Period Gratings ◽  
Label Free Detection ◽  
Escherichia Coli Bacteria

scholarly journals Long-Period Gratings and Microcavity In-Line Mach Zehnder Interferometers as Highly Sensitive Optical Fiber Platforms for Bacteria Sensing

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3772 ◽  
Author(s):  
Tinko Eftimov ◽  
Monika Janik ◽  
Marcin Koba ◽  
Mateusz Śmietana ◽  
Predrag Mikulic ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Outer Membrane Proteins ◽  
Label Free ◽  
Fiber Sensors ◽  
E Coli ◽  
Long Period ◽  
Long Period Gratings ◽  
Highly Sensitive ◽  
Micro Cavity ◽  
And Staphylococcus Aureus

Selected optical fiber sensors offer extraordinary sensitivity to changes in external refractive (RI), which make them promising for label-free biosensing. In this work the most sensitive ones, namely long-period gratings working at (DTP-LPG) and micro-cavity in-line Mach-Zehnder interferometers (µIMZI) are discussed for application in bacteria sensing. We describe their working principles and RI sensitivity when operating in water environments, which is as high as 20,000 nm/RIU (Refractive index unit) for DTP-LPGs and 27,000 nm/RIU for µIMZIs. Special attention is paid to the methods to enhance the sensitivity by etching and nano-coatings. While the DTP-LPGs offer a greater interaction length and sensitivity to changes taking place at their surface, the µIMZIs are best suited for investigations of sub-nanoliter and picoliter volumes. The capabilities of both the platforms for bacteria sensing are presented and compared for strains of Escherichia coli, lipopolysaccharide E. coli, outer membrane proteins of E. coli, and Staphylococcus aureus. While DTP-LPGs have been more explored for bacteria detection in 102–106 Colony Forming Unit (CFU)/mL for S. aureus and 103–109 CFU/mL for E. coli, the µIMZIs reached 102–108 CFU/mL for E. coli and have a potential for becoming picoliter bacteria sensors.

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