Fabrication and optical characterization of III-nitride air-bridge photonic crystal with GaN quantum dots

2007 ◽  
Vol 4 (1) ◽  
pp. 90-94 ◽  
Author(s):  
Ning Li ◽  
M. Arita ◽  
S. Kako ◽  
M. Kitamura ◽  
S. Iwamoto ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photonic Crystal ◽  
Optical Characterization

Fabrication and optical characterization of photonic crystal nanocavities with electrodes for gate-defined quantum dots

2020 ◽  
Vol 59 (SG) ◽  
pp. SGGI05
Author(s):  
T. Tajiri ◽  
Y. Sakai ◽  
K. Kuruma ◽  
S. M. Ji ◽  
H. Kiyama ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photonic Crystal ◽  
Optical Characterization

Fabrication and optical characterization of hexagonal photonic crystal microcavities in InP-based membranes containing InAs∕InP quantum dots

2005 ◽  
Vol 98 (2) ◽  
pp. 023101 ◽  
Author(s):  
Dan Dalacu ◽  
Simon Frédérick ◽  
Alexei Bogdanov ◽  
Philip J. Poole ◽  
Geof C. Aers ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photonic Crystal ◽  
Optical Characterization ◽  
Photonic Crystal Microcavities ◽  
Inp Quantum Dots

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
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