A tag-along microsensor device comprises a means for transmitting a signal, adhesion means, and sensing means. In a preferred embodiment, a means for transmitting a signal includes a nano-antenna apparatus. Adhesion means may include mechanical, magnetic, or static electric adhesion means. Mechanical adhesion means may include a hook or barb, or a chemical adhesion means such as glue or other sticky chemical adhesive. Sensing means may include sensing of audio signals, accelerometers, gyros, or other sensors.

 
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> Optical diffraction element

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