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Spring 2009 Potomac Term - Potomac School

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News On Campus<br />

Students Explore the Vast<br />

But Tiny World of Nanotechnology<br />

By Doug Cobb<br />

After observing and scanning objects at a tiny scale<br />

[ left ], students can work with the resulting images on<br />

the computer.<br />

Atomic force microscopy, carbon nanotubes,<br />

and quantum mechanical tunneling effects are<br />

not topics that are traditionally studied in high<br />

school science classes. However, students in the<br />

Upper <strong>School</strong> are using state-of-the-art technology<br />

to investigate one of the most exciting areas<br />

of cutting-edge research in science: nanotechnology.<br />

This field involves the imaging and<br />

manipulation of matter at dimensions from one<br />

to 100 nanometers (a nanometer is one-billionth<br />

of a meter).<br />

At this tiny scale, substances have unique<br />

properties that enable new applications of<br />

science and engineering. Researchers from all<br />

disciplines and branches of science are studying<br />

nanoscale science because it promises exciting<br />

breakthroughs in medicine, computers, energy<br />

development, diagnostics, transportation, cancer<br />

research and many other areas. For example,<br />

a recent Stanford University study demonstrated<br />

a way to use nanotechnology to deliver chemotherapy<br />

drugs that target only cancerous cells<br />

while keeping healthy tissues protected from the<br />

drug’s toxic effects.<br />

The greatest obstacle to the study of nanotechnology<br />

at the high school and undergraduate<br />

levels is a lack of access to the field’s specialized<br />

equipment. Thanks to generous donations from<br />

<strong>Potomac</strong> parents Teri and Frank Bennett and Ann<br />

and Mark Kington, <strong>Potomac</strong> recently purchased<br />

a scanning tunneling microscope (STM) and an<br />

atomic force probe microscope (AFM), which<br />

enable students to see and analyze atomic-resolution<br />

images of materials.<br />

Our students spent the fall learning how<br />

the microscopes work and how to use them to<br />

observe samples on the atomic level. They are<br />

currently looking into current research studies on<br />

topics such as carbon nanotubes, nanomaterials<br />

and nanoelectronics in order to understand the<br />

possibilities of nanotechnology and to formulate<br />

ideas for their own independent research projects.<br />

They will share their findings at a spring assembly.<br />

<strong>Spring</strong> <strong>2009</strong> 23

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