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.
Affidavits Law & Legal Definition. An affidavit is statement of facts which is sworn to (or affirmed) before an officer who has authority to administer an oath (e.g. a notary public).The person making the signed statement (affiant) takes an oath that the contents are, to the best of their knowledge, true.It is also signed by a notary or some other judicial officer that can administer oaths, affirming that the person signing the affidavit was under oath when doing so.he person making the signed statement (affiant) takes an oath that the contents are, to the best of their knowledge, true. It is also signed by a notary or some other judicial officer that can administer oaths, affirming that the person signing the affidavit was under oath when doing so.