The evolution of InAs and In(0.85)Mn(0.15)As quantum dots grown at 270 °C is studied as a function of coverage. We show that, in contrast to what occurs at high temperature, the two-dimensional to three-dimensional transition is not abrupt but rather slow. This is due to the finding that part of the deposited material also contributes to the wetting layer growth after quantum dot formation. This aspect is particularly accentuated in In(0.85)Mn(0.15)As deposition. The Voronoi area analysis reveals a significant spatial correlation between islands.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0957-4484/22/19/195602 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advancements in Cancer Treatment: Harnessing the Synergistic Potential of Graphene-Based Nanomaterials in Combination Therapy.
ACS Appl Mater Interfaces
January 2025
Surface Chemistry Research Laboratory, Faculty of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
Combination therapy, which involves using multiple therapeutic modalities simultaneously or sequentially, has become a cornerstone of modern cancer treatment. Graphene-based nanomaterials (GBNs) have emerged as versatile platforms for drug delivery, gene therapy, and photothermal therapy. These materials enable a synergistic approach, improving the efficacy of treatments while reducing side effects.
View Article and Find Full Text PDFCombining digital imaging and quantum dots for analytical purposes.
Anal Methods
January 2025
Department of Fundamental Chemistry, LIA3 - Applied Analytical Instrumentation Laboratory, Federal University of Pernambuco, Av. Jornalista Anibal Fernandes, s/n, Cidade Universitária, Recife, PE, 50740-560, Brazil.
This review provides a critical assessment of the most recent advances in digital imaging (DI) methods, applied for the development of analytical methodologies combining quantum dots (QDs). The state-of-the-art, treatment of data, instrumental considerations, software, sensing approaches, and optimization of the resulting methods are reported. Applications of the technology for the analysis of food and beverages, biomedically relevant analytes, drugs, environmental samples and forensic samples are also discussed.
View Article and Find Full Text PDFExcitation wavelength-dependent quantum yield in water-soluble CdTe quantum dots.
Nanoscale
January 2025
School of Chemical Sciences, Indian Institute of Technology Mandi, H.P. 175075, India.
The quantum yield (QY) of semiconductor quantum dots (QDs) is severely hampered by the inherent fluorescence intermittency. The QY of QDs typically increases with an increase in the excitation wavelength. Here, we present a distinctive behavior, where the QY is found to decrease with an increase in the excitation wavelength in water-soluble CdTe QDs (CQDs).
View Article and Find Full Text PDFDevelopment of a smartphone integrated 3D-printed point of care platform for sensitive detection of bilirubin.
Talanta
December 2024
Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Haridwar, Uttarakhand, 247667, India. Electronic address:
Strategic design and development of nanomaterials-based detection platforms specific to critical biomarkers like bilirubin holds immense promise for revolutionizing early disease detection. Bilirubin (BR) plays a pivotal role as a biomarker for liver function, making accurate and timely detection of BR crucial for diagnosing and monitoring of liver diseases. In this work, we synthesized blue light emitting graphene quantum dots (GQDs) via a single step pyrolysis method, which exhibited excellent photostability and biocompatibility.
View Article and Find Full Text PDFFacile synthesis of g-CN@Sulfated titania nanocomposites with enhancement visible-light degradation of dyes and antibiotics: Mechanistic and DFT studies.
J Environ Manage
December 2024
Chemistry Department, Faculty of Science, Benha University, Benha, 13518, Egypt.
The photocatalytic efficiency of TiO has been opposed by the fast recombination speed of photogenerated carriers. Here, g-CN -modified sulfate-built-in TiO quantum dots (ST-QDs) were successfully created using a simple ultrasonication-thermal procedure. g-CN-enrapped ST QDs with a 10 nm size were revealed by the characterization results.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!