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An Overview of Nanotechnology-Based Innovations in Food Packaging
Published in Shiji Mathew, E.K. Radhakrishnan, Nano-Innovations in Food Packaging, 2023
Gemechu Berhanu Kerorsa, Mahendra Pal
Antibodies combined with nanomaterials, such as quantum dots, have been developed to identify bacteria. The rationale for using quantum dots is large because of their high fluorescence efficiency, stability against photobleaching, long decay lifetime, and higher sensitivity (Mihinduku-lasuriya and Lim, 2014; Pal et al., 2019).
Luminescent Nanomaterials: A Step Towards Solid-State Lighting and Display
Published in Odireleng Martin Ntwaeaborwa, Luminescent Nanomaterials, 2022
Mohan Lal Meena, Sudipta Som, Chung-Hsin Lu, Somrita Dutta, Rajan Kumar Singh, Shawn D. Lin
Semiconductor nanocrystals have expanded excessive concern due to their unique characteristics and enhanced luminescence properties. A unique classification of semiconductor nanocrystals is quantum dots. In recent years, the quantum dots are being used in diverse regime including light-emitting diodes, display technology, photovoltaic industries, and biomedical applications. In the present chapter, ample info about altered features of QDs is delivered including the basics, structural and optical properties. The historical advancement of solid-state lighting from bulk phosphors to nanomaterials are discussed in the theoretical background of quantum confinement and compositional engineering. With a focus on the light emission and display aspects, the present chapter introduces the motive for the instability and the way out for the wide application of QDs in the light-emitting and display technologies.
Applications of Graphene-based Composite Materials
Published in Amit Sachdeva, Pramod Kumar Singh, Hee Woo Rhee, Composite Materials, 2021
Gorkem Memisoglu, Burhan Gulbahar, Canan Varlikli
Quantum dots are semiconductor nanomaterials of diameter 1.5–8 nm whose optical and electronic properties change depending on their size or type because of quantum confinement. Quantum dot materials have a high extinction coefficient and a bright and stable fluorescence emission character (Leatherdale et al. 2002), (Zhang et al. 2015), (2017).
A comprehensive review on photocatalytic degradation of organic pollutants and microbial inactivation using Ag/AgVO3 with metal ferrites based on magnetic nanocomposites
Published in Cogent Engineering, 2023
Nuralhuda Aladdin Jasim, Shahlaa Esmail Ebrahim, Saad H. Ammar
Many applications for quantum dots (QDs) with special features can be found in the fields of energy, environment, and medicine. Due to their abundant availability, durability, availability, accessibility, and environmental friendliness, green natural resources are suitable for the synthesis of a range of nanoarchitectures. This critical review highlights recent advances in the environmentally friendly and sustainable synthesis of carbon, graphene, and metal-based QDs in addition to their important environmental applications, such as the creation of photocatalyst hydrogen, the deterioration of detrimental contaminants/pollutants, and the slight decrease in CO2. It also underlines the principal difficulties and opportunities that remain (Z. H. Jabbar & Ebrahim, 2022; Jabbar, Ebrahim, et al., 2021), (SM, 2018).
CdTe solar cells fabrication and examination techniques: a focused review
Published in International Journal of Green Energy, 2023
Manaf Zghaibeh, Paul C. Okonkwo, Wilfred Emori, Tofayel Ahmed, A.M.A Mohamed, Mansur Aliyu, Gbenga Joshua Ogunleye
Substituting nonrenewable energy with renewable energy sources will help in addressing the current global energy crisis and global warming problems. Hence, there is a need to redirect and shift the focus of the power supplies and energy sources from oil, coal, and natural gas to wind, solar, geothermal, and other renewable energy sources (Boyle 2004; Panwar, Kaushik, and Kothari 2011). Solar energy is a wide, unlimited, clean, and renewable energy source that can be used to substitute nonrenewable energy sources (Johansson et al. 1993). A lot of research is currently targeted at developing photovoltaic systems using solar cells with high thermal, optical, and electrical properties that help address the technological and energy crisis (Bialasiewicz 2008). Çetinkaya et al. (2022) through light management engineering, enhanced the performance of CdTe solar cells for light harvesting and photovoltaics applications. Recently, Rahman et al. (2021) reported that the exceptional ability of quantum dot-sensitized solar cells (QDSSCs) to grow sunlight and produce numerous electron/hole pairs, easy manufacture, and low cost make them important energy-producing components.
Tuning of nonlinear optical characteristics of a cylindrical quantum dot by external fields and structure parameters
Published in Philosophical Magazine, 2023
Mohammed Jaouane, Ahmed Sali, E. Kasapoglu, Fatih Ungan
Modern growth techniques such as metal–organic vapour phase epitaxy (MOVPE), molecular beam epitaxy (MBE), Stranski–Krastanov, etc. have succeeded in producing semiconductor nanomaterials with better control of the size and shape of nanomaterial systems. These techniques can reduce the dimension of semiconductors until they construct the nano-systems on an atomic scale. Following these favourable outcomes, the low-dimensional semiconductors have picked the interest of theoretical and experimental scholars due to their uniquely sophisticated properties. Their investigations have contributed to improving the efficiency of devices based on nanostructured materials, especially quantum dots (QDs). As fabrication techniques have advanced, the quantum dot structures have taken on a variety of shapes such as cylindrical, spherical, pyramid, cone, ring, etc. [1–7] and are now used in a variety of everyday devices, including solar cells [8], medical devices [9], laser [10], photo-detectors [11], LED [12], batteries and energy storage [13] and transistor [14]. The quantum dot systems may become the backbone of future electronic components. The technologies based on it have been a fast-growing field in the past few decades. In this regard, the report of the European industry predicts that the quantum dot market will grow exponentially from 2020 to 2025 [15].