Particle sizes - Nanotechnology

What are Nanoparticles?

Nanoparticles are particles that have dimensions measured in nanometers. Typically, they range from 1 to 100 nanometers in size. These particles often exhibit unique physical and chemical properties due to their large surface area to volume ratio and quantum effects.

Why is Particle Size Important in Nanotechnology?

The size of nanoparticles significantly influences their behavior and properties. For instance, smaller particles have higher reactivity due to their larger surface area. Particle size can affect properties such as optical properties, electrical conductivity, and mechanical strength. Understanding particle size is essential for tailoring nanoparticles for specific applications.

How are Nanoparticles Measured?

Various techniques are used to measure the size of nanoparticles, including dynamic light scattering (DLS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Each method has its advantages and limitations, and the choice often depends on the material and desired accuracy.

What are the Applications of Nanoparticles?

Nanoparticles are used in a wide range of applications due to their unique properties. Some common applications include:

Drug delivery: Nanoparticles can be engineered to deliver drugs directly to targeted cells, improving the efficacy and reducing side effects.
Catalysis: Their high surface area makes nanoparticles excellent catalysts for chemical reactions.
Electronics: Nanoparticles are used in the fabrication of advanced electronic devices, such as transistors and sensors.
Medical imaging: Nanoparticles enhance the contrast in imaging techniques like MRI and CT scans.
Environmental remediation: Nanoparticles can be used to clean up pollutants and contaminants from water and soil.

What Challenges Exist with Nanoparticles?

Despite their potential, nanoparticles pose several challenges. One major concern is toxicity; the small size of nanoparticles allows them to penetrate biological membranes, potentially causing adverse effects. Additionally, the environmental impact of nanoparticles is not fully understood, necessitating further research into their long-term effects. The manufacturing of nanoparticles at a commercial scale also presents technical and economic challenges.

Future Prospects

The field of nanotechnology is rapidly evolving, and ongoing research aims to overcome the current challenges. Innovations in synthesis methods, characterization techniques, and regulatory frameworks will likely open up new possibilities. As our understanding of particle size and its implications deepens, the potential applications of nanoparticles will continue to expand, driving advancements in various sectors.

Relevant Publications

Anthocyanin-loaded milk-derived extracellular vesicles nano-delivery system: Stability, mucus layer penetration, and pro-oxidant effect on HepG2 cells.

Issue Release: 2024

Role of particle size in modulating starch digestibility and textural properties in a rye bread model system.

Issue Release: 2024

The combined effects of polystyrene of different sizes and cadmium in mouse kidney tissues.

Issue Release: 2024

Tailings particle size effects on pollution and ecological remediation: A case study of an iron tailings reservoir.

Issue Release: 2024

Beyond the Runway: Respiratory health effects of ultrafine particles from aviation in children.

Issue Release: 2024

Exploring effect of uniform dry ball-milling duration on pasting and rheological properties of pink potato and maize starch mixtures.

Issue Release: 2024

Inhalable solid lipid nanoparticles of levofloxacin for potential tuberculosis treatment.

Issue Release: 2024

A frozen suspension external calibration strategy for elemental quantitative imaging of fresh plant soft tissues by LA-ICP-MS with cryogenic ablation cell.

Issue Release: 2024

Size-classifiable quantification of nanoplastic by rate zonal centrifugation coupled with pyrolysis-gas chromatography-mass spectrometry.

Issue Release: 2024

Facilitating polymorphic crystallization of HMX through ultrasound and trace additive assistance.

Issue Release: 2024

The effects of monomer type, filler size, and filler content of three resin cements on the color stability of laminate veneers exposed to accelerated aging.

Issue Release: 2024

Location-dependent occurrence and distribution of metal-based nanoparticles in bay environments.

Issue Release: 2024

Numerical study on the effect of nozzle-converging length on the aerosols collection efficiency and deposition on the impaction plate of a multi-nozzle inertial impactor.

Issue Release: 2024

Effects of fluid composition in fluid injection experiments in porous media.

Issue Release: 2024

Dehydrogenative oxidation of hydrosilanes using gold nanoparticle deposited on citric acid-modified fibrillated cellulose: unveiling the role of molecular oxygen.

Issue Release: 2024

Revisiting various mechanistic approaches for cellulose dissolution in different solvent systems: A comprehensive review.

Issue Release: 2024

Development of Ni-doped A-site lanthanides-based perovskite-type oxide catalysts for CO methanation by auto-combustion method.

Issue Release: 2024

Study on compaction characteristics and mechanical model of dry crushing filling material under lateral confinement condition.

Issue Release: 2024

Spatially offset Raman scattering line-mapping as an adaptive tool ensuring accuracy for determination of component concentrations in tablets with different particle sizes.

Issue Release: 2024

Ionic Polymerization-Based Synthesis of Bioinspired Adhesive Hydrogel Microparticles with Tunable Morphologies from Microfluidics.

Issue Release: 2024

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