Directional Modulation of Exciton Emission Using Single Dielectric Nanospheres

2021 ◽  
pp. 2007236
Author(s):  
Jie Fang ◽  
Mingsong Wang ◽  
Kan Yao ◽  
Tianyi Zhang ◽  
Alex Krasnok ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Directional Modulation

Dielectric Nanospheres: Directional Modulation of Exciton Emission Using Single Dielectric Nanospheres (Adv. Mater. 20/2021)

2021 ◽  
Vol 33 (20) ◽  
pp. 2170153
Author(s):  
Jie Fang ◽  
Mingsong Wang ◽  
Kan Yao ◽  
Tianyi Zhang ◽  
Alex Krasnok ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Directional Modulation

scholarly journals Accurate and Efficient Evaluation of Bit Error Rate for Dynamic Directional Modulation for Standard Modulation Schemes

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 776
Author(s):  
Josep Parrón ◽  
Edith Cabrera-Hernandez ◽  
Alan Tennant
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Physical Layer Security ◽  
Evaluation Method ◽  
Physical Layer ◽  
Observation Angle ◽  
Transmitted Power ◽  
Modulation Schemes ◽  
Wireless Transmissions ◽  
Directional Modulation

Directional modulation (DM) has been proposed as a technique to enhance physical layer security of wireless transmissions. In DM, the improvement of security is achieved by increasing the transmitted power in such a way that the bit error rate (BER) is degraded in the observation angles out of the desired secure direction. The performance of DM in terms of BER is typically evaluated by transmitting a stream of symbols for every observation angle, but this approach can be time consuming. In this communication, we propose an approach to evaluate, accurately and efficiently, the BER of dynamic DM (DDM) for standard modulation schemes. Several DDM configurations will be tested to illustrate the benefits and limitations of the evaluation method. The proposed approach is also used to present a non-iterative DDM synthesis with restrictions in the BER response.

scholarly journals Intense Dark Exciton Emission from Strongly Quantum-Confined CsPbBr3 Nanocrystals

Nano Letters ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 7321-7326
Author(s):  
Daniel Rossi ◽  
Xiaohan Liu ◽  
Yangjin Lee ◽  
Mohit Khurana ◽  
Joseph Puthenpurayil ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Quantum Confined ◽  
Dark Exciton

Anthracene fluorescence at low temperatures. I. Purified single crystals

1972 ◽  
Vol 25 (7) ◽  
pp. 1411 ◽  
Author(s):  
LE Lyons ◽  
LJ Warren
Keyword(s):  
Low Temperature ◽  
Single Crystals ◽  
Fluorescence Spectrum ◽  
Low Temperatures ◽  
Free Exciton ◽  
Deformation Bands ◽  
Exciton Emission ◽  
Polarized Emission ◽  
Impurity Bands ◽  
Phonon Structure

The low-temperature fluorescence spectrum of purified vapour-grown anthracene single crystals is presented and the free-exciton emission distinguished from a number of defect or impurity bands present even in the purest crystals. In assigning the observed bands the symmetry of the active vibrations and the origin of background fluorescence and deformation bands are discussed. The phonon structure in the region of the fluorescence origin was found to be almost completely b-polarized. Emission of electronic origin (25103 cm-1) was too weak to be observed. Polarization ratios of the principal vibronio bands at 5.6 K are given.

Surface localized exciton emission from undoped SnO2 nanocrystal films

2010 ◽  
Vol 97 (22) ◽  
pp. 221105 ◽  
Author(s):  
S. S. Pan ◽  
Y. H. Tian ◽  
Y. Y. Luo ◽  
Y. X. Zhang ◽  
S. Wang ◽  
...  
Keyword(s):  
Exciton Emission ◽  
Undoped Sno2 ◽  
Nanocrystal Films

Exciton emission in PTCDA thin films under uniaxial pressure

2008 ◽  
Vol 77 (11) ◽  
Author(s):  
V. R. Gangilenka ◽  
A. DeSilva ◽  
H. P. Wagner ◽  
R. E. Tallman ◽  
B. A. Weinstein ◽  
...  
Keyword(s):  
Thin Films ◽  
Uniaxial Pressure ◽  
Exciton Emission

Near-field exciton imaging of chemically treated MoS2 monolayers

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8851-8858 ◽  
Author(s):  
Youngbum Kim ◽  
Yongjun Lee ◽  
Hyun Kim ◽  
Shrawan Roy ◽  
Jeongyong Kim
Keyword(s):  
Near Field ◽  
Exciton Emission ◽  
Chemical Treatments ◽  
Near Field Imaging ◽  
Chemically Treated ◽  
Mos2 Monolayers ◽  
Field Imaging

Modification of local exciton emission in monolayer MoS2 by chemical treatments is spatially uneven as revealed by near field imaging.

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