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November 02, 2005

Beating the sub-wavelength limit

Classical particles can only pass though an aperture if they are smaller than the aperture. Quantum particles like atoms can only pass through an opening if their de Broglie wavelength is smaller than the opening. If the de Broglie wavelength is larger than the aperture, the atoms cannot pass through, even if their physical size is smaller than the aperture. Similarly, light can only pass through a slit if its wavelength is smaller than the width of the slit.

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Posted by thinkingmachine at November 2, 2005 07:16 PM

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