Chitosan is polycationic in nature due to which the polymer can be attached to the negatively charged gold nanoparticle surfaces through electrostatic interactions. Using chitosan enables providing enough steric hindrance ensuring colloid stability and functionalizing nanoparticles to be used as sensors.t is either partially or fully deacetylated chitin. As chitin occurs naturally (for example in fungal cell walls and crustacean shells), chitosan is a fully biodegradable and biocompatible natural polymer, and can be used as an adhesive and as an antibacterial and antifungal agent.
Affiant. Someone who signs an affidavit and swears to its truth before a notary public or another person authorized to take oaths, such as a county clerk. Compare: declarant.
notary public. Public figure authorized by a government to administer oaths, attest authenticity of signatures, certify deeds and mortgages, take affidavits, and protest dishonored bills of exchange, etc., with an official seal. Also called a notary.