scholarly journals 2D-Materials-Based Quantum Dots: Gateway Towards Next-Generation Optical Devices

2017 ◽  
Vol 5 (19) ◽  
pp. 1700257 ◽  
Author(s):  
Sathish C. Dhanabalan ◽  
Balaji Dhanabalan ◽  
Joice S. Ponraj ◽  
Qiaoliang Bao ◽  
Han Zhang
Keyword(s):  
Quantum Dots ◽  
2D Materials ◽  
Optical Devices ◽  
Next Generation

Thermally-Induced Dehydrogenative Coupling of Organosilanes and H-Terminated Silicon Quantum Dots onto Germanane Surfaces

2020 ◽  
Author(s):  
Haoyang Yu ◽  
Alyxandra Thiessen ◽  
Md Asjad Hossain ◽  
Marc Julian Kloberg ◽  
Bernhard Rieger ◽  
...  
Keyword(s):  
2D Materials ◽  
Future Generation ◽  
Optical Devices ◽  
Surface Reactivity ◽  
Organic Monolayers ◽  
Present Contribution ◽  
Thermally Induced ◽  
Dehydrogenative Coupling ◽  
Silicon Quantum Dot ◽  
Covalently Bonded

<div><div><div><p>Covalently bonded organic monolayers play important roles in defining the solution processability, ambient stability, and electronic properties of two-dimensional (2D) materials such as Ge nanosheets (GeNSs); they also hold promise of providing avenues for the fabrication of future generation electronic and optical devices. Functionalization of GeNS normally involves surface moieties linked through covalent Ge−C bonds. In the present contribution we extend the scope of surface linkages to include Si−Ge bonding and present the first demonstration of heteronuclear dehydrocoupling of organosilanes to hydride-terminated GeNSs obtained from the deintercalation and exfoliation of CaGe2. We further exploit this new surface reactivity and demonstrated the preparation of directly bonded silicon quantum dot-Ge nanosheet hybrids.</p></div></div></div>

A Review on Quantum Dots: Synthesis to In- silico Analysis as Next Generation Antibacterial Agents

2019 ◽  
Vol 20 (3) ◽  
pp. 255-262 ◽  
Author(s):  
Sounik Manna ◽  
Munmun Ghosh ◽  
Ranadhir Chakraborty ◽  
Sudipto Ghosh ◽  
Santi M. Mandal
Keyword(s):  
Quantum Dots ◽  
Pathogenic Bacteria ◽  
Antibacterial Agents ◽  
Antimicrobial Properties ◽  
Binding Potential ◽  
Antibacterial Drug ◽  
Next Generation ◽  
Mechanism Of Reaction ◽  
High Level ◽  
Membrane Components

Succumbing to Multi-Drug Resistant (MDR) bacteria is a great distress to the recent health care system. Out of the several attempts that have been made to kill MDR pathogens, a few gained short-lived success. The failures, of the discovered or innovated antimicrobials, were mostly due to their high level of toxicity to hosts and the phenomenal rate of developing resistance by the pathogens against the new arsenal. Recently, a few quantum dots were tested against the pathogenic bacteria and therefore, justified for potential stockpiling of next-generation antibacterial agents. The key players for antimicrobial properties of quantum dots are considered to be Reactive Oxygen Species (ROS). The mechanism of reaction between bacteria and quantum dots needs to be better understood. They are generally targeted towards the cell wall and membrane components as lipoteichoic acid and phosphatidyl glycerol of bacteria have been documented here. In this paper, we have attempted to simulate ZnS quantum dots and have analysed their mechanism of reaction as well as binding potential to the above bacterial membrane components using CDOCKER. Results have shown a high level of antibacterial activity towards several pathogenic bacteria which specify their potentiality for future generation antibacterial drug development.

scholarly journals Scalable Production of Boron Quantum Dots for Broadband Ultrafast Nonlinear Optical Performance

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 687
Author(s):  
Shuolei Meng ◽  
Qianyuan Chen ◽  
Hongjian Lin ◽  
Feng Zhou ◽  
Youning Gong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Relaxation Time ◽  
Nonlinear Optical ◽  
Average Diameter ◽  
Optical Devices ◽  
Nonlinear Optical Properties ◽  
Saturable Absorption ◽  
Nonlinear Optical Susceptibility ◽  
Tandem Structure

A simple and effective approach based on the liquid phase exfoliation (LPE) method has been put forward for synthesizing boron quantum dots (BQDs). By adjusting the interactions between bulk boron and various solvents, the average diameter of produced BQDs is about 7 nm. The nonlinear absorption (NLA) responses of as-prepared BQDs have been systematically studied at 515 nm and 1030 nm. Experimental results prove that BQDs possess broadband saturable absorption (SA) and good third-order nonlinear optical susceptibility, which are comparable to graphene. The fast relaxation time and slow relaxation time of BQDs at 515 nm and 1030 nm are about 0.394–5.34 ps and 4.45–115 ps, respectively. The significant ultrafast nonlinear optical properties can be used in optical devices. Here, we successfully demonstrate all-optical diode application based on BQDs/ReS2 tandem structure. The findings are essential for understanding the nonlinear optical properties in BQDs and open a new pathway for their applications in optical devices.

Heterostructures of 2D materials-quantum dots (QDs) for optoelectronic devices: challenges and opportunities

2021 ◽  
Author(s):  
Sudesh Yadav ◽  
Satya Ranjan Jena ◽  
Bhavya M.B. ◽  
Ali Altaee ◽  
Manav Saxena ◽  
...  
Keyword(s):  
Quantum Dots ◽  
2D Materials ◽  
Optoelectronic Devices ◽  
Challenges And Opportunities

Graphene Quantum Dots Assisted Exfoliation of Atomically-thin 2D Materials and As-formed 0D/2D van der Waals Heterojunction for HER

Carbon ◽  
2021 ◽  
Author(s):  
Jun Gong ◽  
Zheye Zhang ◽  
Zhiping Zeng ◽  
Wenjun Wang ◽  
Lingxuan Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
2D Materials ◽  
Van Der Waals ◽  
Graphene Quantum Dots

Monolithic Fabrication of Two-Color InAs Quantum Dots for Integrated Optical Devices by Using a Rotational Metal Mask

2009 ◽  
Vol 48 (6) ◽  
pp. 065502 ◽  
Author(s):  
Nobuhiko Ozaki ◽  
Shunsuke Ohkouchi ◽  
Yoshiaki Takata ◽  
Naoki Ikeda ◽  
Yoshinori Watanabe ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Devices ◽  
Inas Quantum Dots ◽  
Metal Mask ◽  
Integrated Optical ◽  
Integrated Optical Devices

Toward phosphorescent and delayed fluorescent carbon quantum dots for next-generation electroluminescent displays

2021 ◽  
Author(s):  
Ting Yuan ◽  
Ting Meng ◽  
Yuxin Shi ◽  
Xianzhi Song ◽  
Wenjing Xie ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
High Thermal Stability ◽  
Next Generation ◽  
Low Cytotoxicity ◽  
Tunable Emission ◽  
Fluorescent Carbon

Featuring a combination of size-tunable emission wavelengths, high thermal stability, and low cytotoxicity, carbon quantum dots (CQDs) have opened up a new possibility for next-generation displays.

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