CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10347 > Article
Presentation
25 September 2017 High-speed position and force measurements in optical tweezers (Conference Presentation)
Anatolii V. Kashchuk, Alexander B. Stilgoe, Timo A. Nieminen, Halina H. Rubinsztein-Dunlop
Author Affiliations +
Proceedings Volume 10347, Optical Trapping and Optical Micromanipulation XIV; 1034717 (2017) https://doi.org/10.1117/12.2274673
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States
Abstract
Accurate centroid position measurements of a light spot are vital for optical tweezers. To get quantitative measurements we can find the optical force by measuring the change in momentum of the trapping beam and track the position of the trapped particle using its image. We propose to use a filter with a linear transmittance to modulate the amplitude of the input beam in such a way that the transmitted intensity of the light will be proportional to the displacement of the spot. Our method is compared with existing methods and we find that it provides accurate measurements at high bandwidth.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Anatolii V. Kashchuk, Alexander B. Stilgoe, Timo A. Nieminen, and Halina H. Rubinsztein-Dunlop "High-speed position and force measurements in optical tweezers (Conference Presentation)", Proc. SPIE 10347, Optical Trapping and Optical Micromanipulation XIV, 1034717 (25 September 2017); https://doi.org/10.1117/12.2274673
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Sensors
Optical testing
Optical tweezers
Photodetectors
Linear filtering
Optical tracking
Atomic force microscopy
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top