Done by Glenn Chua 3P305

NANOPARTICLESBrief Introduction

NANOPARTICLE

Sized between 1 and 100 nanometers (10−9 m)

Nanoparticles may or may not exhibit size-related properties that differ significantly from those observed in fine particles or bulk materials

NANOMATERIALBrief Introduction

NANOMATERIAL

Materials Science-based approach to nanotechnology

Studies materials with morphological features on the nanoscale

NANOMATERIALVarious materials

NANOGOLDAlso known as colloidal gold

NANOGOLD (PROPERTIES)

Colloidal gold is a suspension of sub micrometre sized particles of gold in a fluid.

The liquid is usually red or a dirty yellowish, depending on size of particles, with red being for <100nm and dirty yellowish for larger particles.

NANOGOLD(USAGE)

Due to the unique optical, electronic and molecular-recognition properties of gold nanoparticles, they are the subject of substantial research , with applications in electron microscopy as well as in health and medical applications.

NANOGOLD (USAGE)

Electron microscopy Colloidal gold particles can be attached to many

traditional biological probes Particles of different size are easily

distinguishable in electron micrographs, allowing simultaneous multiple labelling experiments.

NANOGOLD (USAGE)

Health and medical applications Therapy for rheumatoid arthritis in rats Relieves pain with implantation near arthritic

joints Combination of microwave radiation and colloidal

gold can destroy beta-amyloid fibrils and plaque associated with Alzheimer's disease

Investigated as carriers for drugs such as Paclitaxel

Cancer research, where it can be used to target tumors.

SILVER NANOPARTICLES

SILVER NANOPARTICLES (PROPERTIES)

1nm-100nm in size Some silver are composed of a large

percentage of silver oxide due to their large ratio of surface to bulk silver atoms.

NANOGOLD(USAGE)

Bone cement Surgical instruments Surgical masks Wound dressings Treatment of HIV-1 Found in products by Samsung, called Silver

Nano Used as the cathode in silver oxide battery

IRON NANOPARTICLES

Nanoscale Iron particles

IRON NANOPARTICLES (PROPERTIES)

Highly reactive because of large surface area Rapidly oxidizes in presence of oxygen and

water to form free ions

IRON NANOPARTICLES (USAGE)

Remediation of industrial sites contaminated with chlorinated organic compounds

Widely used in medical and laboratory applications

PLATINUM NANOPARTICLES

PLATINUM NANOPARTICLES (PROPERTIES)

Usually in the form of a suspension or colloid Size ranges between 2-3 nm Trillions of platinum nanoparticles are

suspended in brownish red or black coloured colloidal solution.

PLATINUM NANOPARTICLES (USAGE)

Has antioxidant properties, are the subject of substantial research with applications in a wide variety of areas Medicine Synthesis of novel materials with unique

properties

REFERENCES

http://en.wikipedia.org/wiki/Nanotechnology http://en.wikipedia.org/wiki/Nanomaterials http://en.wikipedia.org/wiki/Nanogold http://en.wikipedia.org/wiki/

Silver_nanoparticles http://en.wikipedia.org/wiki/

Platinum_nanoparticles http://en.wikipedia.org/wiki/

Nanoscale_iron_particles

THANK YOUI hope you have enjoyed my presentation!