Nano Particles

Nanoparticles Introduction a. Particles sizes less than 100nm b. Strikingly different properties due to their sizes c. Ability to measure and manipulate matter on the nanometer level is making possible a new generation materials with enhanced mechanical, optical, transport and magnetic properties d. From micro-nano level-change in its physical as well as chemical properties: increase in the ratio of the surface area to volume and size of the particle.

For Ag nanoparticles Potentionally useful for applications such as c. Catalyst for reduction of aromatic nitro compounds d. Surface-enhanced agent e. An additive for chiral sparation f. An antimicrobial agent

Review of Related Literature Synthesis of Metal Nanoparticles a. Au Nanoparticles b. Cu Nanoparticles c. Ni Nanoparticles Fe Nanoparticles d. Fe Nanoparticles

Method of Synthesis    

1. RF Plasma (radio frequency plasma) 2. Chemical Methods 3. Thermolysis (Thermal decomposition) 4. Pulsed Laser Methods

1. RF Plasma

2. Chemical Methods

3. Thermolysis (Thermal decomposition)

4. Pulsed Laser Methods

Synthesis of Silver Nanoparticles 

The synthesis procedure shown here was adapted by Steve Ng and Chris Johnson from a procedure developed by S.D. Solomon, M. Bahadory, A.V. Jeyarajasingam, S.A. Rutkowsky, C. Boritz, and L. Mulfinger, Journal of Chemical Education, 84, 322-325, (2007).

The formation of silver nanoparticles can be observed by a change in color since small nanoparticles of silver are yellow. A layer of absorbed borohydride anions on the surface of the nanoparticles keep the nanoparticles separated. When sodium cholride (NaCl) is added the nanoparticles aggregate and the suspension turns cloudy gray. The addition of a small amount of polyvinyl pyrrolidone will prevent aggregation.

Procedure

Integrated Nanoparticle-Biomolecule 

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Synthesis and Properties of Biomolecule Functionalized Nanoparticles Biomolecule Functionalized Nanoparticles for Controlled Chemical Reactivity The Aggregation of Biomolecule Functionalized Nanoparticles Assembly of Biomolecule Nanoparticle Architectures on Surfaces Functional Biomolecule Nanoparticle Structure on Surfaces for Application as sensors Biomolecule Functionalized Magnetic Particles Biomolecule Based Nanocircuitry

Silver nanoparticle Coupled with Polymers 

Strong resonant coupling with light and plasmons of Ag nanoparticle lead to huge number of amazing and technologically important optical effects, one of resonant coupling with light and plasmons is the enhancement of fluorescence from a nearby molecule.

Interaction of Ag Nanoparticles with Diseases 

The interaction of metal nanoparticles, specifically silver, with biomolecules and microorganisms is a growing field of study. Many areas of research have exploring the possibilities of Ag nanoparticles curing or inhibiting some diseases.

Ag Nanoparticle Used as Biosensors to Biomolecules 

During the recent years, scientific interest has been raised by the discovery of different nanoparticles. One of these nanoparticles is the Ag nanoparticles due to its good conduction of electricity and its ion can easily combine with many biological compounds through electrovalent bond or coordinate bond. Ag nanoparticle can be also easily absorbed in an electrode which turns to easily catalyze reduction – oxidation processes. This certain kind of property of silver makes it a good biosensor for biological molecules.

Proposal