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Topic Review
Magnetic Material Nanoparticles
Magnetic material nanoparticles (MNPs) have been widely used in the detection and treatment of bacterial infections as detection agents and therapeutics. Infections caused by pathogenic bacteria, especially multidrug-resistant bacteria, have become a serious worldwide public health problem. Early diagnosis and treatment can effectively prevent the adverse effects of such infections. Therefore, there is an urgent need to develop effective methods for the early detection, prevention, and treatment of diseases that are caused by bacterial infections.
  • 1.4K
  • 23 May 2024
Topic Review
Delivery Systems for Nucleic Acids/Proteins
Gene therapy has been used as a potential approach to address the diagnosis and treatment of genetic diseases and inherited disorders. In this line, non-viral systems have been exploited as promising alternatives for delivering therapeutic transgenes and proteins. In this entry, we explored how biological barriers are effectively overcome by non-viral systems, usually nanoparticles, to reach an efficient delivery of cargoes.
  • 1.4K
  • 31 Mar 2021
Topic Review
Nanofiber
Nanofibers are considered versatile materials with remarkable potential in tissue engineering and regeneration. In addition to their extracellular matrix-mimicking properties, nanofibers can be functionalized with specific moieties (e.g., antimicrobial nanoparticles, ceramics, bioactive proteins, etc.) to improve their overall performance.
  • 1.4K
  • 29 Apr 2021
Topic Review
Phosphorus Dendrimers for the Synthesis of Metal Nanoparticles
Nanoparticles are defined as matter that has at least one dimension between 1 and 100 nm, and that generally has different properties from its bulk. Phosphorus dendrimers are hyperbranched macromolecules synthesized step-by-step, bearing a phosphorus atom at each branching point. Such type of dendrimers are suitable for the synthesis of diverse types of metal nanoparticles from organometallic precursors.
  • 1.4K
  • 21 Aug 2023
Topic Review
Therapeutic Applications of Nano-Phytopharmaceuticals
Phytopharmaceuticals have been widely used globally since ancient times and acknowledged by healthcare professionals and patients for their superior therapeutic value and fewer side effects compared to modern medicines. Dose reduction, improved bioavailability, receptor-selective binding, and targeted delivery of phytopharmaceuticals can be likely achieved by molding them into specific nano-formulations. 
  • 1.4K
  • 25 Jan 2022
Topic Review
Thermal Characterization of Low-Dimensional Materials
Heat dissipation and thermal management are central challenges in various areas of science and technology and are critical issues for the majority of nanoelectronic devices. In this review, we focus on experimental advances in thermal characterization and phonon engineering that have drastically increased the understanding of heat transport and demonstrated efficient ways to control heat propagation in nanomaterials.
  • 1.4K
  • 02 Feb 2021
Topic Review
HER2-Positive Breast Cancer Targeted Therapies
Breast cancer represents the most common cancer type and one of the major leading causes of death in the female worldwide population. Overexpression of human epidermal growth factor (HER2), a transmembrane glycoprotein related to the epidermal growth factor receptor, results in a biologically and clinically aggressive breast cancer subtype. It is also the primary driver for tumor detection and progression and, in addition to being an important prognostic factor in women diagnosed with breast cancer, HER2 is a widely known therapeutic target for drug development. In breast cancer, the overexpression of the HER2 receptor makes it a reliable biomarker and a successful therapeutic target. Several strategies have been developed to target HER2, using various targeting molecules including monoclonal antibodies and tyrosine kinase inhibitors, antibody–drug conjugates, small molecules, and peptides.
  • 1.4K
  • 12 Sep 2023
Topic Review
2D Materials in Ultrafast Lasers
Ultrafast lasers are the key component of ultrafast photonics, which have come into practice in various fields, such as micromachining, communication, medical procedures, gas detection, and remote sensing. With the advantages of stability, compactness, and easy implementation, mode-locking and Q-switching are two notable techniques to achieve ultrafast pulsed lasers, where SAs perform crucial roles in many types of ultrafast lasers, such as fiber, solid-state, and waveguide lasers.
  • 1.4K
  • 25 Aug 2021
Topic Review
Methods of Manufacture of Lipid Nanoparticles
Lipid nanoparticles (LNPs) have gained prominence as primary carriers for delivering a diverse array of therapeutic agents. Biological products have achieved a solid presence in clinical settings, and the anticipation of creating novel variants is increasing. These products predominantly encompass therapeutic proteins, nucleic acids and messenger RNA. The advancement of efficient LNP-based delivery systems for biologics that can overcome their limitations remains a highly favorable formulation strategy. 
  • 1.4K
  • 31 Jan 2024
Topic Review
Molecular Design of Porphyrin-Based Covalent Organic Frameworks
Chemical modification and self-assembly of molecules as well as constructing porphyrin-based metal (covalent) organic frameworks are often used to improve its solar light utilization and electron transfer rate. Especially porphyrin-based covalent organic frameworks (COFs) in which porphyrin molecules are connected by covalent bonds combine the structural advantages of organic frameworks with light-capturing properties of porphyrins and exhibit great potential in light-responsive materials. 
  • 1.4K
  • 10 May 2023
Topic Review
Boron Nitride Materials
Boron nitride 2D materials are characterized by several defects which affect their optical properties. A better in-sight of the structure is achieved by theoretical calculations which have been used to investigate the boron-nitride defects and their functionalization on the atomic scale. A brief overview of the main theoretical models used to describe the defects-properties relationship is given in the present entry.
  • 1.4K
  • 26 Oct 2020
Topic Review
Safe Nanoparticles
The field of nanotechnology has grown over the last two decades and made the transition from the benchtop to applied technologies. Nanoscale-sized particles, or nanoparticles, have emerged as promising tools with broad applications in drug delivery, diagnostics, cosmetics and several other biological and non-biological areas. These advances lead to questions about nanoparticle safety. Despite considerable efforts to understand the toxicity and safety of these nanoparticles, many of these questions are not yet fully answered. Nevertheless, these efforts have identified several approaches to minimize and prevent nanoparticle toxicity to promote safer nanotechnology.
  • 1.4K
  • 25 Aug 2021
Topic Review
Green Synthesis and Biomedical Application of Selenium Nanoparticles
Selenium nanoparticles (SeNPs) are extremely popular objects in nanotechnology. “Green” synthesis has special advantages due to the growing necessity for environmentally friendly, non-toxic, and low-cost methods. 
  • 1.4K
  • 22 Dec 2023
Topic Review
Graphene-Based Nanomaterials in Environmental Analysis
Sample preparation is an essential and preliminary procedure of most chemical analyses. Due to the sample diversity, the selection of appropriate adsorbents for the effective preparation and separation of different samples turned out to be important for the methods. By exploiting the rapid development of material science, some novel adsorption materials, especially graphene-based nanomaterials, have shown supremacy in sample pretreatment. In this review, a discussion between these nanomaterials will be made, as well as some basic information about their synthesis. The focus will be on the different environmental applications that use these materials.
  • 1.4K
  • 11 May 2021
Topic Review
Multiplexed Nanobiosensors
Nanobiosensors are sensors in which various nanosize materials are used, however, large equipment is still required for whole sensing systems, because they are not, by themselves, able to detect nanoscale events. The current state-of-the-art nanobiosensors are based on several diagnostic methods, such as enzyme-linked immunosorbent assay (ELISA), flow cytometric immunoassay, electrochemical (amperometric, voltammetric and impedance), immunoassay, mass spectrometric immunoassay, chromatographic immunoassay, and different optical immunoassays. Contemporary multiplexed nanobiosensors are developed for the detection and quantification of clinically relevant analytes in biological and clinical samples (i.e., blood, urine, and saliva).
  • 1.4K
  • 23 Jun 2021
Topic Review
Properties of Hybrid Perovskite and Polymer Materials
The aim of this work is to investigate the preparation, the optical properties and the stability over time of a colloidal oraganic-inorganic hybrid perovskite (CH3NH3PbBr3)/random copolymer P(MMA-co-DMAEMA) system. Different ratios of perovskite to copolymer were used to study its effect on stability and properties. The optical properties were investigated by UV-Vis and Fluorescence Spectroscopy. Dynamic light scattering was used to determine the size, and the polydispersity of the colloidal hybrid particles; while morphology was investigated by transmission electron microscopy. Photoluminescence decay studies revealed the interaction of the random copolymer with the perovskite. Finally, thin-films were prepared to investigate the optical properties of thin hybrid films was observed under certain conditions.
  • 1.4K
  • 30 Nov 2021
Topic Review
Halloysite Nanofluids
Nanofluids obtained from halloysite and de-ionized water (DI) were prepared by using surfactants and changing pH for heat-transfer applications. The halloysite nanotubes (HNTs) nanofluids were studied for several volume fractions (0.5, 1.0, and 1.5 vol%) and temperatures (20, 30, 40, 50, and 60 °C). 
  • 1.4K
  • 20 Feb 2021
Topic Review
Nanofiber-Based Face Masks and Respirators
Wearing face masks, use of respirators, social distancing, and practicing personal hygiene are all measures to prevent the spread of coronavirus disease (COVID-19). This pandemic has revealed the deficiency of face masks and respirators across the world. Therefore, significant efforts are needed to develop air filtration and purification technologies, as well as innovative, alternative antibacterial and antiviral treatment methods. It has become urgent—in order for humankind to have a sustainable future—to provide a feasible solution to air pollution, particularly to capture fine inhalable particulate matter in the air.
  • 1.4K
  • 24 Aug 2021
Topic Review
Renal Nanomedicine
The kidneys are vital organs performing several essential functions. Their primary function is the filtration of blood and the removal of metabolic waste products as well as fluid homeostasis. Renal filtration is the main pathway for drug removal, highlighting the importance of this organ to the growing field of nanomedicine. The kidneys (i) have a key role in the transport and clearance of nanoparticles (NPs), (ii) are exposed to potential NPs’ toxicity, and (iii) are the targets of diseases that nanomedicine can study, detect, and treat. 
  • 1.4K
  • 12 Aug 2021
Topic Review
Gold Nanoparticles for Multidrug-Resistant Bacteria
The field of medical nanotechnology has emerged as an innovative and a powerful tool for treating some of the most complicated health conditions. Different inorganic nanomaterials including gold, silver, and others have showed potential antibacterial efficacies. Interestingly, gold nanoparticles (AuNPs) have gained specific attention, due to their biocompatibility, ease of surface functionalization, and their optical properties.
  • 1.4K
  • 22 Feb 2021
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