ABSTRACT
Nanotechnology has emerged as the forefront in the scientific research and technology development over the years. Carbon nanotubes (CNTs) stand as the most promising material in the field of nanotechnology, which are produced by many interesting methods. CNTs possess unique electrical, mechanical, chemical, thermal, and optical properties that can be suitable for various interesting applications. Research has proven that exposure to CNTs has negative effects on human health because CNTs are subject to intense toxicological scrutiny. Quantum dots are the core theme in nanotechnology. Quantum dots are miniature semiconductor particles that are a few nanometers in size, having optical and electronic properties. The characteristic shifting of the band gap energy with quantum dot size allows experimental measurement to determine the extent to which quantum confinement effects play a role in the resulting properties. Some exciting facts is that the applications for quantum dots to be used in the field of optoelectronics are quantum dot infrared photo detectors, quantum dot lasers, and quantum dot solar cells are also reviewed in this research. Metallic nanoparticles are nano-sized metals with dimensions within the size range of 1–100 nm. These nanomaterials can be prepared and modified with various chemical functional groups that allow them to bind with antibodies, ligands, and drugs. Metallic nanoparticles give a wide range of applications in therapeutic area, biotechnology, vehicles for gene, and drug delivery.
