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Colloidal quantum dots (cQDs) are now a mature nanomaterial with optical properties customizable through varying size and composition. However, their use in optical devices is limited as they are not widely available in convenient forms…

In this work, we demonstrate high inhibition efficiency of carboxyl carbon quantum dots (CCQDs) for the first time. The as-prepared CCQDs have excellent scale inhibition performance for calcium sulfate and barium sulfate. With static test…

Applied Physics · Physics 2018-10-03 Jian Hao , Lingyun Li , Weiwei Zhao , Xiaqian Wu , Yangyang Xiao , Hongfeng Zhang , Na Tang , Xiaocong Wang

In this work, hybridization of nonmetal nitrogen-doped carbon dots (NCQDs) with ZnO nanorods (NRs) is utilized towards better photocatalytic degradation of rhodamine B under ultraviolet (UV) irradiation. The structural characterization is…

Materials Science · Physics 2021-08-11 Sujoy Kumar Mandal , Sumana Paul , Sujoy Datta , Debnarayan Jana

Quantum dots (QDs) have emerged as promising nanomaterials with unique optical and physical properties, making them highly attractive for various applications in biomedicine. This review provides a comprehensive overview of the types, modes…

Achieving versatile routes to generate crystalline carbon-based nanostructures has become a fervent pursuit in photocatalysis-related fields. We demonstrate that the direct electrooxidation of ethanol, performed on Ni foam, yields…

This paper investigates quantum dots (QDs), which are miniature semiconductor structures with remarkable optical and electrical properties due to quantum confinement processes. Traditional QDs, such as CdTe, have been extensively…

It is known that, by taking advantage of heteroatom doping, the electronic states and transition channels in carbon nano-dots (CNDs) can be effectively modulated. Thus, the photoluminescence (PL) properties of CNDs can be changed. For…

Mesoscale and Nanoscale Physics · Physics 2021-11-30 Wenli Li , Ju Tang , Yuzhao Li , Han Bai , Weizuo Zhang , Jin Zhang , Yiming Xiao , Wen Xu

We propose and demonstrate a novel range of models to accurately determine the optical properties of nitrogen-free carbon quantum dots (CQDs) with ordered graphene layered structures. We confirm the results of our models against the full…

Mesoscale and Nanoscale Physics · Physics 2023-02-15 D. W. Boukhvalov , V. Yu. Osipov , B. T. Hogan , A. Baldycheva

Carbon Quantum dots (CQD's) are nanoscale sp2 hybridized carbon particles. In this work, we present a simple one-step synthesis of CQDs from the electrochemical shredding method and technique to control its size during its growth process. A…

Applied Physics · Physics 2020-11-09 Ashish Gaurav , Deepali Sinha , Rakesh K. Prasad , Dilip K. Singh

Carbon quantum dots (CQDs) are a promising material for electronic applications due to their easy fabrication and interesting semiconductor properties. Further, CQDs exhibit quantum confinement and charging effects, which may lead not only…

Mesoscale and Nanoscale Physics · Physics 2025-06-10 Scott Copeland , Sungguen Ryu , Kazunari Imai , Nicholas Krasco , Zhixiang Lu , David Sanchez , Paul Czubarow

In this work, we investigate the electrical conductivity of carbon nanotubes (CNTs), with a particular focus on the effects of doping. Using a first-principles approach, we study the electronic structure, phonon dispersion, and…

Materials Science · Physics 2024-08-07 Mina Yoon , German D. Samolyuk , Kai Li , James A. Hayne , Tolga Aytug

Quantum dots (QDs), embedded in supercapacitors (S-C) cells exhibited capacitance amplification that peaked at certain QD concentration. More than 2.5 peak amplification was demonstrated with cyclic voltammetry (C-V) at a scan rate of 0.1…

Chemical Physics · Physics 2025-08-25 H. Grebel

Controlling the dynamics of DNA translocation is a central issue in the emerging nanopore-based DNA sequencing. To address the potential of heteroatom doping of carbon nanostructures to achieve this goal, herein we carry out atomistic…

Mesoscale and Nanoscale Physics · Physics 2018-08-13 Sang Won Jung , Han Seul Kim , Art E. Cho , Yong-Hoon Kim

Doping of bulk semiconductors has revealed widespread success in optoelectronic applications. In the past few decades, substantial effort has been engaged for doping at the nanoscale. Recently, doped zero-dimensional quantum dots made of…

Mesoscale and Nanoscale Physics · Physics 2016-06-22 Manoj Sharma , Kivanc Gungor , Aydan Yeltik , Murat Olutas , Burak Guzelturk , Yusuf Kelestemur , Talha Erdem , Hilmi Volkan Demir

The present study investigates the catalytic performance of a $hg-C_{3}N_{4}$ quantum dot aimed at enhancing electrochemical water splitting, using the first-principles density functional theory. The size of the considered quantum dot lies…

Materials Science · Physics 2024-08-08 Khushboo Dange , Vaishali Roondhe , Alok Shukla

We report results of quantum efficiency (QE) measurements carried out on a 150 nm thick nitrogen-incorporated ultrananocrystalline diamond terminated with hydrogen; abbreviated as (N)UNCD:H. (N)UNCD:H demonstrated a QE of $\sim$10$^{-3}$…

Materials Science · Physics 2015-06-22 K. J. Pérez Quintero , S. Antipov , A. V. Sumant , C. Jing , A. D. Kanareykin , S. V. Baryshev

Semiconductor nanoparticles (quantum dots) were studied in the context of liquid scintillator development for upcoming neutrino experiments. The unique optical and chemical properties of quantum dots are particularly promising for the use…

Instrumentation and Detectors · Physics 2015-06-16 C. Aberle , J. J. Li , S. Weiss , L. Winslow

A detailed understanding of energy transduction is crucial for achieving precise control of energy flow in complex, integrated systems. In this context, carbon nanotubes (CNTs) are intriguing model systems due to their rich,…

Mesoscale and Nanoscale Physics · Physics 2011-02-16 Eyal Shafran , Benjamin D. Mangum , Jordan M. Gerton

Quantum dot sensitized solar cells are among the new generations of solar cells that have attracted much attention. Theoretical and simulation studies have predicted high efficiency for these cells so that in the future, these cells could…

Applied Physics · Physics 2020-07-17 Hossein Vahid Dastjerdi , Hamidreza Fallah , Morteza Hajimahmoodzadeh

Materials with optical gain in the infrared are of paramount importance for optical communications, medical diagnostics1 and silicon photonics2,3 . The current technology is based either on costly III-V semiconductors that are not…

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