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Arthur Ashkin

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description Arthur Ashkin Overview

Arthur Ashkin was a pioneering American physicist renowned for his groundbreaking work in optics and laser physics. He developed optical tweezers – a technique utilizing lasers to precisely manipulate and position microscopic objects like cells and atoms. This innovation has proven invaluable in biological research, materials science, and nanotechnology, enabling scientists to study complex systems at an unprecedented level of control. His contributions earned him the 2018 Nobel Prize in Physics.

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How do Arthur Ashkin's optical tweezers work?

Optical tweezers use the forces produced by a tightly focused laser beam to trap and move microscopic particles. Ashkin demonstrated that the method could manipulate objects such as dielectric beads and living biological material without mechanical contact.

Why did Arthur Ashkin receive the 2018 Nobel Prize?

Ashkin received half of the 2018 Nobel Prize in Physics for optical tweezers and their application to biological systems. Gérard Mourou and Donna Strickland shared the other half for chirped pulse amplification.

What can scientists manipulate with optical tweezers?

Researchers use optical tweezers to handle objects ranging from microscopic beads to cells and individual biomolecules attached to beads. The technique can measure tiny forces involved in processes such as DNA stretching and molecular-motor movement.

Did Arthur Ashkin develop optical tweezers at Bell Labs?

Yes, Ashkin performed his landmark laser-manipulation research at Bell Laboratories. His work on radiation pressure preceded and helped enable later laser-cooling experiments with atoms.