Nanotechnology and Its Impact on Your Future

Nanoscience &Nanotechnology

PRESENTED BY SHUBHAM CHAUDHARY1Why should you know something about Nanotechnology?

The National Science Foundation estimates that by the year 2015 there will be a need for 2 million workers worldwide in the fields of nanoscience and nanotechnology.

An additional 5 million workers will be needed in support areas for these fields.

By 2015, nanotechnology is expected to be a $3 trillion industry

2Point out to students that the year 2015 is not too far in the future. The 2 million workers will be researchers and engineers. The 5 million workers will be the people with Bachelors, Associates, and Technical Degrees. Point out that in less than 2 years the expected dollar amount has doubled from 1.5 trillion to 3 trillion.What is a nano?A nano is one billionth of a meter or 10-9 mA normal person can walk 32 kilometers or about 20 miles in one day. If a person were shrunk so that they were one nanometer tall, how long would it take them to walk the length of a dollar bill?24 years

3Each bullet will click in one at a time. Ask question, give several students a chance to guess before providing the answer. You may want to hold up a dollar bill.What is Nanotechnology?The science of manipulating atoms and molecules to make new materials and devices.Interdisciplinary where science and engineering interconnectOccurs at the 1-100 nanometer range One nanometer is 10-9 meters or about 3 atoms long. For comparison, a human hair is about 60-80,000 nanometers wide

4The definition for nanotechnology may be different depending on the source of the definition. You may want students to feel their hairs when you are discussing the width of a hair.Two Parts of NanotechnologyNanotechnology is often divided into two parts:Nanoscience where researchers learn about the chemical and physical properties of materials at the 1- 100 nanometer (nm) scale. Materials at 1-100 nm are called nanostructures. They are the smallest things that can be made.Nanotechnology where researchers develop and apply materials at this scale to develop new products or methods; i.e., turning nanostructures into useable tools and applications

5Science researches look for unique processes and materials and technology looks for ways to use these unique materials.Unique Properties and NanotechnologyNanotechnology involves the manufacturing and application of instruments and materials that have unique properties because of their small size.At the nanoscale, properties of materials behave differently and are said to behave under atomic and molecular rules. Researchers are using these unique properties of materials at this small scale to create new and exciting tools and products in all areas of science and engineering.

6Point out that lots of things are nano in size but do they have unique properties because of their nano size. The is what researchers are looking at.NanofabricationTop-down nanofabrication start with large material and bring it down to the nanoscaleBottom-up nanofabrication start with individual atoms and build upwards to make a nanostructure

7Pass around some wafers that have circuits on them if you have those available.Nanotechnology is not New!Gold nanoparticles in glass are reflected as red

Ancient stained-glass makers knew if they put finely ground gold or silver in the glass they would get beautiful colors. They used nanosized gold and silver particles. Optical properties change with the nanoscale.

8Ancient glass makers used gold and silver salts to get reds and yellows in stained glass. Point out to students the different colors of gold that have been ground to different nanosizes. Tell students this is exciting to chemist because it is like having a new periodic table.

9The electronics industry is getting smaller and faster all the time. Computer chips pictured above contain millions of transistors to run a variety of electronic devices including computers, digital cameras, memory sticks, and traffic lights. Light-Emitting Diodes (LEDs ) found in traffic lights and display boards are the product of micro and nano-electronics research.

10Medical and pharmaceutical products are important areas where nanoscience is being used to create new methods, resources, and products.Top left to bottom right: Textured surfaces used to grow mono-layers of epithelial cells for burn victim patients; The secondometry plates picture represents the field of MEMs; silver bandages to prevent infection, calcium phosphate coated titanium structures for broken bones and implants; Mass spectrometry plates for use in the pharmaceutical industry and drug development; diabetic biocapule that houses insulin producing cells used to regulate sugar levels in blood stream; Radiation therapy capsule that combines silver and iodine 125 to produce a radioisotope and inhibit the growth of tumor cells; smart catheters that use ultrasound to locate narrowed arteries for stent deployment; humidity sensor used to monitor the breathing status of patients and maybe used in home sleep apnea kits, stents that are coated with thin films of time releasing drug molecules; and microneedles.

11There are over 800 products on the market that either have nanostructures or have been developed through nanoprocesses.Nano CareersDesignDevelopmentNational securityTechnical supportResearchManagementPackagingEnergy producer Clothing design

Public ServiceFabricationPatent AttorneyEnvironmentSalesTeachingTestingConstruction And Many More

12Homeland security and military applications are also big areas for applying nano to real world problems.