nanotechnology-applied-to-life-sciences 生物纳米技术.pptVIP

NANOTECHNOLOGY APPLIED TO LIFE SCIENCES NANOMEDICNE DRUG DELIVERY What is NANOTECHNOLOGY ? Nanotechnology is the creation of functional materials, devices, and systems through control of matter on the nanometer length scale and the exploitation of novel properties and phenomena developed at that scale. NANOMETER………..(nm) A nanometer is one billionth of a meter (10-9 m). This is roughly ten times the size of an individual atom. Why is this scale so important ? Is this really new...... ??? Though this idea seems to a very new one but it as old as 1959, when famous physicist Richard Feynman gave this idea in his lecture given at California Institute of Technology called Theres Plenty of Room at the Bottom“, .......... a field, in which little has been done, but in which an enormous amount can be done in principle. This field is not quite the same as the others in that it will not tell us much of fundamental physics (in the sense of, ``What are the strange particles?)............. .......talk about is the problem of manipulating and controlling things on a small scale. ...................As soon as I mention this, people tell me about miniaturization, and how far it has progressed today. They tell me about electric motors that are the size of the nail on your small finger. And there is a device on the market, they tell me, by which you can write the Lords Prayer on the head of a pin. But thats nothing; thats the most primitive, halting step in the direction I intend to discuss. It is a staggeringly small world that is below. .............” History continues........ Norio Taniguchi of Tokyo science University first defined nanotechnology in 1974. His definition still stands as the basic statement today: Nano-technology mainly consists of the processing of separation, consolidation, and deformation of materials by one atom or one molecule.  K. Eric Drexler is the one who is most recognized by most with driving the nanotechnology revolution to where it is toda