Medicine

Gecko Toe

Gecko Toe
The gecko's amazing ability to cling to vertical or inverted surfaces is due to the interaction between nanoscale structures on its feet and tiny crevices on the wall or ceiling. The soles of gecko feet are made up of overlapping adhesive lamellae covered with millions of superfine hairs, or setae, each of which branches out at the end into hundreds of spatula-shaped structures. These flexible pads—each measuring only a few nanometers across—curve to fit inside unseen cracks and divots on the surface. The combined adhesion of these millions of pads holds the gecko in place. This striking property is being studied for use in the creation of new kinds of adhesive tapes, self-dissolving bandages, and high friction materials that can support loads on smooth surfaces.

Minimum credit: 

Cliff Mathisen, FEI Company

Pixels: Width: 

1024

Pixels: Height: 

1084

Permissions:

This image was created by another institution, not the NISE Network. This image is available to NISE Network member organizations for non-profit educational use only. Uses may include but are not limited to reproduction and distribution of copies, creation of derivative works, and combination with other assets to create exhibitions, programs, publications, research, and Web sites. Minimum credit required.

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Glass Nanowire

Glass Nanowire
In this optical microscope image, light can be seen passing though a silica nanowire on a silica aerogel surface. New technologies have made it possible to draw glass in long, ultra-smooth wires with uniform diameters in the nanometer range. Because of their extraordinary uniformity, these nanowires have unique properties important in optics and photonics, both of which require precise control of light.

Minimum credit: 

Eric Mazur, Harvard University

This is a NISE Network product: 

no

Size: 

This nanowire is 530 nm long and the radius of the bent wire is 8 µm.

Pixels: Width: 

1000

Pixels: Height: 

752

Permissions:

This image was created by another institution, not the NISE Network. This image is available to NISE Network member organizations for non-profit educational use only. Uses may include but are not limited to reproduction and distribution of copies, creation of derivative works, and combination with other assets to create exhibitions, programs, publications, research, and Web sites. Minimum credit required.

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