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. 2004 Sep;112(13):A740-9.
doi: 10.1289/ehp.112-a740.

Nanotechnology: looking as we leap

Ernie Hood

Nanotechnology: looking as we leap

Ernie Hood. Environ Health Perspect. 2004 Sep.
No abstract available

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Figures

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For comparison’s sake. A micrograph shows a nanowire curled into a loop in front of a human hair. Nanowires can be as slender as 50 nanometers, about one-thousandth the width of a hair.
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Small learning curve. Self-assembly of gold polymer nanorods results in a curved structure. The ability to control the size and curvature of nanostructures could aid in applications in drug delivery and electronics.
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Probing insights. Nanoprobes studded with molecules that bind ions such as zinc, calcium, and potassium are injected into cells to reveal the patterns of ion exchange that make cells function. Computer models are used to interpret the fluorescent signatures probes emit when they capture a target ion.
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Shapes and sizes. A visualization of a nanohydraulic piston consists of common nanotechnology components including a carbon nanotube (blue), helium atoms (green), and a "buckyball" molecule (gray).
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Tiny beach umbrellas. A titanium dioxide microsphere (approximately 1–50 microns in diameter) with closed-packed spherical inclusions functions in sunscreens as a small “photonic crystallite,” scattering light very effectively.
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