From the first forecasts and expectations of nanotechnology, in the late 90s, there are many things that have changed and too many expectations not fulfilled. By 2050, the population is expected to exceed 9 billion people. At that time, or even before, the situation in the world can be very difficult if we do not put all the means at our disposal.
A filter media was developed comprising ionic
activated cellulosic material with enormous sorption activity to ions-active
dissolved and colloidal substances in aqueous systems evoking so-called surface
flocculation and a filling material having a filter effect. The dilemma of the
art of low sorption efficiency and high flow rate of filtrated aqueous
dispersions without sacrificing its separation efficiency of fines has been
solved by use of activated cellulosic material having multi-fold (roughly
tenfold to hundredfold) sorption capacity for ions-active dissolved and submicron
particulate contaminants compared to untreated cellulosic material.
With the emergence
of Nanotechnology, there has been remarkable improvement in the field of drug
delivery system over the past decade. Nanotechnology in drug delivery system is
an upcoming field and significant research has been conducted in this regard.
It has been able to overcome some limitations encountered with the traditional
routine drug delivery systems and hence emerged as an effective alternative.
This article reviews nanotechnology based different types of drug delivery
systems and their therapeutic applications.