Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add more filters










Database
Language
Publication year range
1.
Opt Express ; 25(6): 5876-5890, 2017 Mar 20.
Article in English | MEDLINE | ID: mdl-28381059

ABSTRACT

In this work, we present a luminous-exothermic hollow optical element (LEHOE) that performs spectral beam splitting in the visible spectral range for the enhancement of biofilm growth and activity. The LEHOE is composed of a four-layer structure with a fiber core (air), cladding (SiO2), coating I (LaB6 film), and coating II (SiO2-Agarose-Medium film). To clarify the physical, optical and photothermal conversion properties of the LEHOE, we determined the surface morphology and composition of the coating materials, and examined the luminous intensity and heating rate at the LEHOE surface. The biofilm activity on the biocompatible LEHOE is far greater than that of commercial fibers, and the biofilm weight on the LEHOE is 4.5 × that of the uncoated hollow optical element.

2.
Biosens Bioelectron ; 91: 623-628, 2017 May 15.
Article in English | MEDLINE | ID: mdl-28107743

ABSTRACT

We present a novel four-layer structure consisting of bottom, second, third, and surface layers in the sensing region, for a D-shaped step-index fiber-optic evanescent wave (FOEW) sensor. To reduce the background noise, the surface of the longitudinal section in the D-shaped region is coated with a light-absorbing film. We check the morphologies of the second and surface layers, examine the refractive indices (RIs) of the third and surface layers, and analyze the composition of the surface layer. We also investigate the effects of the thicknesses and RIs of the third and surface layers and the LA film on the light transmission and sensitivity of the FOEW sensors. The results highlight the very good sensitivity of the proposed FOEW sensor with a four-layer structure, which reached -0.077 (µg/l)-1 in the detection of the target antibody; the sensitivity of the novel FOEW sensor was 7.60 and 1.52 times better than that of a conventional sensor with a core-cladding structure and an FOEW sensor with a three-layer structure doped with GeO2. The applications of this high-sensitivity FOEW sensor can be extended to biodefense, disease diagnosis, and biomedical and biochemical analysis.


Subject(s)
Biosensing Techniques/instrumentation , Fiber Optic Technology/instrumentation , Optical Fibers , Polymers/chemistry , Animals , Antibodies, Anti-Idiotypic/analysis , Antibodies, Anti-Idiotypic/immunology , Balsams/chemistry , Drug Combinations , Equipment Design , Germanium/chemistry , Goats , Gutta-Percha/chemistry , Immunoglobulin G/analysis , Immunoglobulin G/immunology , Mice , Zinc Oxide/chemistry
SELECTION OF CITATIONS
SEARCH DETAIL
...