Optical characterization of quantum dots entrained in microstructured optical fibers

2005 ◽  
Vol 26 (1-4) ◽  
pp. 377-381 ◽  
Author(s):  
Kenith E. Meissner ◽  
Carvel Holton ◽  
William B. Spillman
Keyword(s):  
Quantum Dots ◽  
Optical Fibers ◽  
Optical Characterization ◽  
Microstructured Optical Fibers

L-cysteine functionalized graphene quantum dots for sub-ppb detection of As (III)

2021 ◽  
Author(s):  
Md. Farhan Naseh ◽  
Neelam Singh ◽  
Jamilur R. Ansari ◽  
Ashavani Kumar ◽  
Tapan Sarkar ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Quantum Dots ◽  
Room Temperature ◽  
Graphene Quantum Dots ◽  
Optical Characterization ◽  
Functionalized Graphene ◽  
Transmission Electron ◽  
Sensitivity And Selectivity ◽  
Structural Characterizations

Abstract Here, we report functionalized graphene quantum dots (GQDs) for the optical detection of arsenic at room temperature. GQDs with the fluorescence of three fundamental colors (red, green, and blue) were synthesized and functionally capped with L-cysteine (L-cys) to impart selectively towards As (III) by exploiting the affinity of L-cys towards arsenite. The optical characterization of GQDs was carried out using UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy, and fluorescence spectrometry and the structural characterizations were performed using transmission electron microscopy. The fluorescence results showed instantaneous quenching in intensity when the GQDs came in contact with As (III) for all test concentrations over a range from 0.025 ppb to 25 ppb, which covers the permissible limit of arsenic in drinking water. The experimental results suggested excellent sensitivity and selectivity towards As (III).

Optical characterization of core–shell quantum dots embedded in synthetic saliva: Temporal dynamics

2015 ◽  
Vol 151 ◽  
pp. 208-212 ◽  
Author(s):  
Juliana F. de Santana ◽  
Viviane Pilla ◽  
Anielle C.A. Silva ◽  
Noelio O. Dantas ◽  
Djalmir N. Messias ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Temporal Dynamics ◽  
Optical Characterization ◽  
Core Shell

Optical characterization of InGaAs/GaAs quantum dots defined by lateral top barrier modulation

1994 ◽  
Vol 37 (4-6) ◽  
pp. 1101-1103 ◽  
Author(s):  
A. Schmidt ◽  
A. Forchel ◽  
F. Faller ◽  
I.E. Itskevich ◽  
A. Vasiliev
Keyword(s):  
Quantum Dots ◽  
Optical Characterization

scholarly journals Optical Characterization of Doped Thermoplastic and Thermosetting Polymer-Optical-Fibers

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 90 ◽  
Author(s):  
Igor Ayesta ◽  
María Illarramendi ◽  
Jon Arrue ◽  
Itxaso Parola ◽  
Felipe Jiménez ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Optical Characterization ◽  
Thermosetting Polymer ◽  
Polymer Optical Fibers

Construction and nonlinear optical characterization of CuO quantum dots doped Na2O–CaO–B2O3–SiO2 bulk glass

2017 ◽  
Vol 28 (17) ◽  
pp. 13201-13208 ◽  
Author(s):  
Yijun Zhang ◽  
Junwen Zhang ◽  
Yu Jin ◽  
Jiaqi Zhang ◽  
Guangcai Hu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nonlinear Optical ◽  
Optical Characterization ◽  
Bulk Glass
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