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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).

• SIZE: The yarn's diameter is about 1 µm. The nanotubes from which it is being drawn are each...

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Scientific Image - Nanowire Resting on a Human Hair

This scanning electron microscope image shows the relative thickness of typical nanowire in comparison with a strand of human hair.

• SIZE: The hair is about 100 µm in diameter; the nanowire's diameter is about 100 nm.

• IMAGING TOOL: Scanning electron microscope

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Scientific Image - Human Hair

This is a scanning electron microscope image of a single strand of human hair.

• SIZE: The diameter of a human hair ranges from about 50 µm to 100 µm.

• IMAGING TOOL: Scanning electron microscope

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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

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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

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Scientific Image - Indium Arsenide Nanowire Field-Effect Transistor

This scanning electron microscope image shows an indium arsenide (InAs) nanowire field-effect transistor.

Semiconductor nanowires such as those of indium arsenide (InAs) offer exciting possibilities for the electronic systems of the future because of the unique possibilities they offer for controlling fundamental properties during generation. A wide range of nanowire-based devices and systems, including transistors, circuits, light emitters, and sensors, have already been explored. Nanowire field-effect transistors have been of particular interest as vehicles for the investigation...

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Scientific Image - Indium Arsenide Nanowires

This is scanning electron microscope image of indium arsenide nanowires.

Semiconductor nanowires such as those of indium arsenide (InAs) offer exciting possibilities for the electronic systems of the future because of the unique possibilities they offer for controlling fundamental properties during generation. A wide range of nanowire-based devices and systems, including transistors, circuits, light emitters, and sensors, have already been explored. Nanowire field-effect transistors have been of particular interest as vehicles for the investigation of basic carrier-transport...

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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.

• SIZE: The image displayed is about...

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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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Scientific Image - Nanomechanical Antenna Oscillator

This scanning electron micrograph depicts a silicon crystal nanomachined into an antenna oscillator that can vibrate about 1.5 billion times per second.

The antenna-type oscillator is a nanomachined single-crystal structure of silicon. Using this design, movements 1000 times smaller than nanometer scale are amplified into motion of the entire micron-sized structure. Operating at gigahertz speeds, the technology could help further miniaturize wireless communication devices like cell phones. This macroscopic nanomechanical oscillator consists of roughly 50 billion silicon atoms....

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