Microbubble trapping in inverted optical tweezers

Thomas J. Smart; Mehmet Burcin Unlu; Philip H. Jones

doi:10.1117/12.2274033

25 August 2017 Microbubble trapping in inverted optical tweezers

Thomas J. Smart, Mehmet Burcin Unlu, Philip H. Jones

Proceedings Volume 10347, Optical Trapping and Optical Micromanipulation XIV; 1034731 (2017) https://doi.org/10.1117/12.2274033
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

We have developed an inverted microscope optical tweezers for trapping and manipulation of microscopic gas bubbles. Trapping is achieved by a time-averaged optical trap using a rapidly-scanning Gaussian laser beam. Unlike holographic optical tweezers for microbubbles that employ a Laguerre-Gaussian beam, in this configuration the backwards-directed optical gradient force is sufficient to confine a microbubble against both the optical scattering force and the microbubble buoyancy. We have calibrated the optical trapping forces for microbubbles with a range of sizes, and determined the scanning trap configuration that produces the strongest confinement. Our system also includes a real-time “point-and-click” user interface for interactive selection, capture and isolation of individual microbubbles with optimal trap stiffness.

Citation Download Citation

Thomas J. Smart, Mehmet Burcin Unlu, and Philip H. Jones "Microbubble trapping in inverted optical tweezers", Proc. SPIE 10347, Optical Trapping and Optical Micromanipulation XIV, 1034731 (25 August 2017); https://doi.org/10.1117/12.2274033

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available