Laser tweezers manipulate objects just 50 nanometers wide

Technique could allow scientists to move proteins, viruses and nanomaterials

BEAD CAPTURE  A 50-nanometer-wide plastic bead (yellow circle, center) is trapped by light in this illustration. Laser light gets focused by a bow tie–shaped hole etched into a thin gold film at the tip of an optical fiber.

R. Quidant

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Physics

From the Nature Index

Paid Content