Scientific Image - Multiwalled Carbon Nanotube Yarn

This scanning electron microscope image shows nanotube yarn fibers drawn from a "nanotube forest." Nanometer and micron-sized yarn or fibers drawn from multiwalled carbon nanotubes can have tensile strengths comparable to or exceeding those of spider silk. Replacing metal wires in electronic textiles with these nanotube yarns could lead to important new functionalities, such as the ability to actuate (as an artificial muscle) and to store energy (as a fiber super-capacitor or battery).

Scientific Image - Human Venule

This is an optical microscope image of a human venule—a tiny blood vessel.

A venule is tiny blood vessel that connects capillaries—where the blood exchanges the oxygen it carries for carbon dioxide—to larger veins leading back to the heart.

• SIZE: A venule is about 30 µm in diameter.

• IMAGING TOOL: Optical microscope

Scientific Image - Singlewalled Nanotube Paper

A bundle of singlewalled nanotubes processed into a thin sheet is shown in this scanning electron microscope image. Singlewalled nanotubes are extremely important in the continuing miniaturization of electronic devices. These tubes have an average diameter of 1-2 nm. Their electrical properties have led to their investigation as super capacitors for storing electrical charges.

• SIZE: The thickness of the sheet is about 50 µm.

• IMAGING TOOL: Scanning electron microscope

Scientific Image - Electrospun Scaffold

This scanning electron microscope image shows an electrospun scaffold grown for studying brain tissue engineering and nerve regeneration.

Scaffolds are of great interest in tissue engineering and nerve regeneration because they form a framework on which soft tissue is supported and thereby start its regeneration process. Electrospinning is a versatile process that creates nanofibers by applying a high voltage to electrically charge a liquid. Researchers can tailor a scaffold to meet the requirements of the tissue they seek to regenerate.

Scientific Image - Zinc Oxide Nanowires

This is a scanning electron microscope image of vertical arrays of zinc oxide (ZnO) nanowires on a sapphire substrate.

Zinc oxide (ZnO) is an ideal material for nanoscale optoelectronics, electronics, and biotechnology applications. Numerous ZnO-based devices have already been developed, including nanowire field effect transistors, piezoelectric nanogenerators, optically pumped nanolasers, and biosensors.

• SIZE: The sample displayed in the image is about 10 µm wide.

• IMAGING TOOL: Scanning electron microscope


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